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https://github.com/pret/pokered.git
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2402 lines
54 KiB
NASM
2402 lines
54 KiB
NASM
HandleMidJump::
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; Handle the player jumping down
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; a ledge in the overworld.
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jpba _HandleMidJump
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EnterMap::
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; Load a new map.
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ld a, $ff
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ld [wJoyIgnore], a
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call LoadMapData
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callba ClearVariablesAfterLoadingMapData
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ld hl, wd72c
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bit 0, [hl] ; has the player already made 3 steps since the last battle?
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jr z, .skipGivingThreeStepsOfNoRandomBattles
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ld a, 3 ; minimum number of steps between battles
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ld [wNumberOfNoRandomBattleStepsLeft], a
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.skipGivingThreeStepsOfNoRandomBattles
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ld hl, wd72e
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bit 5, [hl] ; did a battle happen immediately before this?
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res 5, [hl] ; unset the "battle just happened" flag
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call z, ResetUsingStrengthOutOfBattleBit
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call nz, MapEntryAfterBattle
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ld hl, wd732
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ld a, [hl]
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and 1 << 4 | 1 << 3 ; fly warp or dungeon warp
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jr z, .didNotEnterUsingFlyWarpOrDungeonWarp
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res 3, [hl]
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callba EnterMapAnim
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call UpdateSprites
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.didNotEnterUsingFlyWarpOrDungeonWarp
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callba CheckForceBikeOrSurf ; handle currents in SF islands and forced bike riding in cycling road
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ld hl, wd72d
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res 5, [hl]
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call UpdateSprites
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ld hl, wd126
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set 5, [hl]
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set 6, [hl]
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xor a
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ld [wJoyIgnore], a
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OverworldLoop::
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call DelayFrame
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OverworldLoopLessDelay::
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call DelayFrame
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call LoadGBPal
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ld a,[wd736]
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bit 6,a ; jumping down a ledge?
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call nz, HandleMidJump
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ld a,[wWalkCounter]
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and a
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jp nz,.moveAhead ; if the player sprite has not yet completed the walking animation
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call JoypadOverworld ; get joypad state (which is possibly simulated)
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callba SafariZoneCheck
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ld a,[wSafariZoneGameOver]
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and a
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jp nz,WarpFound2
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ld hl,wd72d
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bit 3,[hl]
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res 3,[hl]
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jp nz,WarpFound2
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ld a,[wd732]
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and a,1 << 4 | 1 << 3 ; fly warp or dungeon warp
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jp nz,HandleFlyWarpOrDungeonWarp
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ld a,[wCurOpponent]
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and a
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jp nz,.newBattle
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ld a,[wd730]
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bit 7,a ; are we simulating button presses?
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jr z,.notSimulating
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ld a,[hJoyHeld]
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jr .checkIfStartIsPressed
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.notSimulating
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ld a,[hJoyPressed]
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.checkIfStartIsPressed
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bit 3,a ; start button
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jr z,.startButtonNotPressed
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; if START is pressed
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xor a
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ld [hSpriteIndexOrTextID],a ; start menu text ID
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jp .displayDialogue
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.startButtonNotPressed
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bit 0,a ; A button
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jp z,.checkIfDownButtonIsPressed
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; if A is pressed
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ld a,[wd730]
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bit 2,a
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jp nz,.noDirectionButtonsPressed
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call IsPlayerCharacterBeingControlledByGame
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jr nz,.checkForOpponent
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call CheckForHiddenObjectOrBookshelfOrCardKeyDoor
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ld a,[$ffeb]
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and a
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jp z,OverworldLoop ; jump if a hidden object or bookshelf was found, but not if a card key door was found
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call IsSpriteOrSignInFrontOfPlayer
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ld a,[hSpriteIndexOrTextID]
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and a
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jp z,OverworldLoop
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.displayDialogue
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predef GetTileAndCoordsInFrontOfPlayer
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call UpdateSprites
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ld a,[wFlags_0xcd60]
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bit 2,a
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jr nz,.checkForOpponent
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bit 0,a
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jr nz,.checkForOpponent
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aCoord 8, 9
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ld [wTilePlayerStandingOn],a ; unused?
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call DisplayTextID ; display either the start menu or the NPC/sign text
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ld a,[wEnteringCableClub]
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and a
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jr z,.checkForOpponent
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dec a
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ld a,0
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ld [wEnteringCableClub],a
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jr z,.changeMap
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; XXX can this code be reached?
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predef LoadSAV
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ld a,[wCurMap]
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ld [wDestinationMap],a
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call SpecialWarpIn
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ld a,[wCurMap]
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call SwitchToMapRomBank ; switch to the ROM bank of the current map
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ld hl,wCurMapTileset
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set 7,[hl]
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.changeMap
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jp EnterMap
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.checkForOpponent
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ld a,[wCurOpponent]
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and a
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jp nz,.newBattle
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jp OverworldLoop
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.noDirectionButtonsPressed
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ld hl,wFlags_0xcd60
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res 2,[hl]
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call UpdateSprites
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ld a,1
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ld [wCheckFor180DegreeTurn],a
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ld a,[wPlayerMovingDirection] ; the direction that was pressed last time
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and a
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jp z,OverworldLoop
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; if a direction was pressed last time
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ld [wPlayerLastStopDirection],a ; save the last direction
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xor a
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ld [wPlayerMovingDirection],a ; zero the direction
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jp OverworldLoop
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.checkIfDownButtonIsPressed
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ld a,[hJoyHeld] ; current joypad state
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bit 7,a ; down button
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jr z,.checkIfUpButtonIsPressed
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ld a,1
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ld [wSpriteStateData1 + 3],a ; delta Y
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ld a,PLAYER_DIR_DOWN
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jr .handleDirectionButtonPress
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.checkIfUpButtonIsPressed
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bit 6,a ; up button
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jr z,.checkIfLeftButtonIsPressed
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ld a,-1
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ld [wSpriteStateData1 + 3],a ; delta Y
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ld a,PLAYER_DIR_UP
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jr .handleDirectionButtonPress
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.checkIfLeftButtonIsPressed
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bit 5,a ; left button
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jr z,.checkIfRightButtonIsPressed
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ld a,-1
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ld [wSpriteStateData1 + 5],a ; delta X
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ld a,PLAYER_DIR_LEFT
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jr .handleDirectionButtonPress
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.checkIfRightButtonIsPressed
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bit 4,a ; right button
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jr z,.noDirectionButtonsPressed
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ld a,1 ; PLAYER_DIR_RIGHT
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ld [wSpriteStateData1 + 5],a ; delta X
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.handleDirectionButtonPress
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ld [wPlayerDirection],a ; new direction
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ld a,[wd730]
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bit 7,a ; are we simulating button presses?
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jr nz,.noDirectionChange ; ignore direction changes if we are
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ld a,[wCheckFor180DegreeTurn]
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and a
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jr z,.noDirectionChange
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ld a,[wPlayerDirection] ; new direction
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ld b,a
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ld a,[wPlayerLastStopDirection] ; old direction
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cp b
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jr z,.noDirectionChange
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; Check whether the player did a 180-degree turn.
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; It appears that this code was supposed to show the player rotate by having
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; the player's sprite face an intermediate direction before facing the opposite
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; direction (instead of doing an instantaneous about-face), but the intermediate
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; direction is only set for a short period of time. It is unlikely for it to
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; ever be visible because DelayFrame is called at the start of OverworldLoop and
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; normally not enough cycles would be executed between then and the time the
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; direction is set for V-blank to occur while the direction is still set.
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swap a ; put old direction in upper half
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or b ; put new direction in lower half
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cp a,(PLAYER_DIR_DOWN << 4) | PLAYER_DIR_UP ; change dir from down to up
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jr nz,.notDownToUp
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ld a,PLAYER_DIR_LEFT
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ld [wPlayerMovingDirection],a
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jr .holdIntermediateDirectionLoop
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.notDownToUp
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cp a,(PLAYER_DIR_UP << 4) | PLAYER_DIR_DOWN ; change dir from up to down
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jr nz,.notUpToDown
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ld a,PLAYER_DIR_RIGHT
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ld [wPlayerMovingDirection],a
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jr .holdIntermediateDirectionLoop
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.notUpToDown
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cp a,(PLAYER_DIR_RIGHT << 4) | PLAYER_DIR_LEFT ; change dir from right to left
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jr nz,.notRightToLeft
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ld a,PLAYER_DIR_DOWN
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ld [wPlayerMovingDirection],a
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jr .holdIntermediateDirectionLoop
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.notRightToLeft
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cp a,(PLAYER_DIR_LEFT << 4) | PLAYER_DIR_RIGHT ; change dir from left to right
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jr nz,.holdIntermediateDirectionLoop
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ld a,PLAYER_DIR_UP
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ld [wPlayerMovingDirection],a
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.holdIntermediateDirectionLoop
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ld hl,wFlags_0xcd60
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set 2,[hl]
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ld hl,wCheckFor180DegreeTurn
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dec [hl]
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jr nz,.holdIntermediateDirectionLoop
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ld a,[wPlayerDirection]
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ld [wPlayerMovingDirection],a
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call NewBattle
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jp c,.battleOccurred
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jp OverworldLoop
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.noDirectionChange
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ld a,[wPlayerDirection] ; current direction
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ld [wPlayerMovingDirection],a ; save direction
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call UpdateSprites
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ld a,[wWalkBikeSurfState]
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cp a,$02 ; surfing
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jr z,.surfing
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; not surfing
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call CollisionCheckOnLand
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jr nc,.noCollision
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; collision occurred
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push hl
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ld hl,wd736
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bit 2,[hl] ; standing on warp flag
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pop hl
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jp z,OverworldLoop
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; collision occurred while standing on a warp
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push hl
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call ExtraWarpCheck ; sets carry if there is a potential to warp
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pop hl
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jp c,CheckWarpsCollision
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jp OverworldLoop
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.surfing
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call CollisionCheckOnWater
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jp c,OverworldLoop
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.noCollision
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ld a,$08
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ld [wWalkCounter],a
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jr .moveAhead2
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.moveAhead
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ld a,[wd736]
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bit 7,a
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jr z,.noSpinning
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callba LoadSpinnerArrowTiles ; spin while moving
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.noSpinning
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call UpdateSprites
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.moveAhead2
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ld hl,wFlags_0xcd60
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res 2,[hl]
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ld a,[wWalkBikeSurfState]
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dec a ; riding a bike?
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jr nz,.normalPlayerSpriteAdvancement
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ld a,[wd736]
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bit 6,a ; jumping a ledge?
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jr nz,.normalPlayerSpriteAdvancement
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call BikeSpeedup ; if riding a bike and not jumping a ledge
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.normalPlayerSpriteAdvancement
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call AdvancePlayerSprite
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ld a,[wWalkCounter]
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and a
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jp nz,CheckMapConnections ; it seems like this check will never succeed (the other place where CheckMapConnections is run works)
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; walking animation finished
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ld a,[wd730]
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bit 7,a
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jr nz,.doneStepCounting ; if button presses are being simulated, don't count steps
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; step counting
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ld hl,wStepCounter
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dec [hl]
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ld a,[wd72c]
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bit 0,a
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jr z,.doneStepCounting
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ld hl,wNumberOfNoRandomBattleStepsLeft
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dec [hl]
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jr nz,.doneStepCounting
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ld hl,wd72c
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res 0,[hl] ; indicate that the player has stepped thrice since the last battle
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.doneStepCounting
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CheckEvent EVENT_IN_SAFARI_ZONE
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jr z,.notSafariZone
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callba SafariZoneCheckSteps
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ld a,[wSafariZoneGameOver]
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and a
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jp nz,WarpFound2
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.notSafariZone
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ld a,[wIsInBattle]
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and a
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jp nz,CheckWarpsNoCollision
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predef ApplyOutOfBattlePoisonDamage ; also increment daycare mon exp
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ld a,[wOutOfBattleBlackout]
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and a
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jp nz,HandleBlackOut ; if all pokemon fainted
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.newBattle
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call NewBattle
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ld hl,wd736
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res 2,[hl] ; standing on warp flag
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jp nc,CheckWarpsNoCollision ; check for warps if there was no battle
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.battleOccurred
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ld hl,wd72d
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res 6,[hl]
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ld hl,wFlags_D733
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res 3,[hl]
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ld hl,wd126
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set 5,[hl]
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set 6,[hl]
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xor a
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ld [hJoyHeld],a
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ld a,[wCurMap]
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cp a,CINNABAR_GYM
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jr nz,.notCinnabarGym
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SetEvent EVENT_2A7
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.notCinnabarGym
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ld hl,wd72e
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set 5,[hl]
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ld a,[wCurMap]
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cp a,OAKS_LAB
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jp z,.noFaintCheck ; no blacking out if the player lost to the rival in Oak's lab
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callab AnyPartyAlive
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ld a,d
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and a
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jr z,.allPokemonFainted
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.noFaintCheck
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ld c,10
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call DelayFrames
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jp EnterMap
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.allPokemonFainted
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ld a,$ff
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ld [wIsInBattle],a
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call RunMapScript
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jp HandleBlackOut
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; function to determine if there will be a battle and execute it (either a trainer battle or wild battle)
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; sets carry if a battle occurred and unsets carry if not
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NewBattle:: ; 0683 (0:0683)
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ld a,[wd72d]
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bit 4,a
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jr nz,.noBattle
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call IsPlayerCharacterBeingControlledByGame
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jr nz,.noBattle ; no battle if the player character is under the game's control
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ld a,[wd72e]
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bit 4,a
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jr nz,.noBattle
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jpba InitBattle
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.noBattle
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and a
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ret
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; function to make bikes twice as fast as walking
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BikeSpeedup:: ; 06a0 (0:06a0)
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ld a,[wNPCMovementScriptPointerTableNum]
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and a
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ret nz
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ld a,[wCurMap]
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cp a,ROUTE_17 ; Cycling Road
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jr nz,.goFaster
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ld a,[hJoyHeld]
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and a,D_UP | D_LEFT | D_RIGHT
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ret nz
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.goFaster
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jp AdvancePlayerSprite
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; check if the player has stepped onto a warp after having not collided
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CheckWarpsNoCollision:: ; 06b4 (0:06b4)
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ld a,[wNumberOfWarps]
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and a
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jp z,CheckMapConnections
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ld a,[wNumberOfWarps]
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ld b,0
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ld c,a
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ld a,[wYCoord]
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ld d,a
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ld a,[wXCoord]
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ld e,a
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ld hl,wWarpEntries
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CheckWarpsNoCollisionLoop:: ; 06cc (0:06cc)
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ld a,[hli] ; check if the warp's Y position matches
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cp d
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jr nz,CheckWarpsNoCollisionRetry1
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ld a,[hli] ; check if the warp's X position matches
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cp e
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jr nz,CheckWarpsNoCollisionRetry2
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; if a match was found
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push hl
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push bc
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ld hl,wd736
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set 2,[hl] ; standing on warp flag
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callba IsPlayerStandingOnDoorTileOrWarpTile
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pop bc
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pop hl
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jr c,WarpFound1 ; jump if standing on door or warp
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push hl
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push bc
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call ExtraWarpCheck
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pop bc
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pop hl
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jr nc,CheckWarpsNoCollisionRetry2
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; if the extra check passed
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ld a,[wFlags_D733]
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bit 2,a
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jr nz,WarpFound1
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push de
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push bc
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call Joypad
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pop bc
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pop de
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ld a,[hJoyHeld]
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and a,D_DOWN | D_UP | D_LEFT | D_RIGHT
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jr z,CheckWarpsNoCollisionRetry2 ; if directional buttons aren't being pressed, do not pass through the warp
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jr WarpFound1
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; check if the player has stepped onto a warp after having collided
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CheckWarpsCollision:: ; 0706 (0:0706)
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ld a,[wNumberOfWarps]
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ld c,a
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ld hl,wWarpEntries
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.loop
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ld a,[hli] ; Y coordinate of warp
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ld b,a
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ld a,[wYCoord]
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cp b
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jr nz,.retry1
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ld a,[hli] ; X coordinate of warp
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ld b,a
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ld a,[wXCoord]
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cp b
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jr nz,.retry2
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ld a,[hli]
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ld [wDestinationWarpID],a
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ld a,[hl]
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ld [hWarpDestinationMap],a
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jr WarpFound2
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.retry1
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inc hl
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.retry2
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inc hl
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inc hl
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dec c
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jr nz,.loop
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jp OverworldLoop
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CheckWarpsNoCollisionRetry1:: ; 072f (0:072f)
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inc hl
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CheckWarpsNoCollisionRetry2:: ; 0730 (0:0730)
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inc hl
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inc hl
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jp ContinueCheckWarpsNoCollisionLoop
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WarpFound1:: ; 0735 (0:0735)
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ld a,[hli]
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ld [wDestinationWarpID],a
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ld a,[hli]
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ld [hWarpDestinationMap],a
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WarpFound2:: ; 073c (0:073c)
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ld a,[wNumberOfWarps]
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sub c
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ld [wWarpedFromWhichWarp],a ; save ID of used warp
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ld a,[wCurMap]
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ld [wWarpedFromWhichMap],a
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call CheckIfInOutsideMap
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jr nz,.indoorMaps
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; this is for handling "outside" maps that can't have the 0xFF destination map
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ld a,[wCurMap]
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ld [wLastMap],a
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ld a,[wCurMapWidth]
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ld [wUnusedD366],a ; not read
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ld a,[hWarpDestinationMap]
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ld [wCurMap],a
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cp a,ROCK_TUNNEL_1
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jr nz,.notRockTunnel
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ld a,$06
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ld [wMapPalOffset],a
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call GBFadeOutToBlack
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.notRockTunnel
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call PlayMapChangeSound
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jr .done
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; for maps that can have the 0xFF destination map, which means to return to the outside map; not all these maps are necessarily indoors, though
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.indoorMaps
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ld a,[hWarpDestinationMap] ; destination map
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cp a,$ff
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jr z,.goBackOutside
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; if not going back to the previous map
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ld [wCurMap],a
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callba IsPlayerStandingOnWarpPadOrHole
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ld a,[wStandingOnWarpPadOrHole]
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dec a ; is the player on a warp pad?
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jr nz,.notWarpPad
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; if the player is on a warp pad
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ld hl,wd732
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set 3,[hl]
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call LeaveMapAnim
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jr .skipMapChangeSound
|
|
.notWarpPad
|
|
call PlayMapChangeSound
|
|
.skipMapChangeSound
|
|
ld hl,wd736
|
|
res 0,[hl]
|
|
res 1,[hl]
|
|
jr .done
|
|
.goBackOutside
|
|
ld a,[wLastMap]
|
|
ld [wCurMap],a
|
|
call PlayMapChangeSound
|
|
xor a
|
|
ld [wMapPalOffset],a
|
|
.done
|
|
ld hl,wd736
|
|
set 0,[hl] ; have the player's sprite step out from the door (if there is one)
|
|
call IgnoreInputForHalfSecond
|
|
jp EnterMap
|
|
|
|
ContinueCheckWarpsNoCollisionLoop:: ; 07b5 (0:07b5)
|
|
inc b ; increment warp number
|
|
dec c ; decrement number of warps
|
|
jp nz,CheckWarpsNoCollisionLoop
|
|
|
|
; if no matching warp was found
|
|
CheckMapConnections:: ; 07ba (0:07ba)
|
|
.checkWestMap
|
|
ld a,[wXCoord]
|
|
cp a,$ff
|
|
jr nz,.checkEastMap
|
|
ld a,[wMapConn3Ptr]
|
|
ld [wCurMap],a
|
|
ld a,[wWestConnectedMapXAlignment] ; new X coordinate upon entering west map
|
|
ld [wXCoord],a
|
|
ld a,[wYCoord]
|
|
ld c,a
|
|
ld a,[wWestConnectedMapYAlignment] ; Y adjustment upon entering west map
|
|
add c
|
|
ld c,a
|
|
ld [wYCoord],a
|
|
ld a,[wWestConnectedMapViewPointer] ; pointer to upper left corner of map without adjustment for Y position
|
|
ld l,a
|
|
ld a,[wWestConnectedMapViewPointer + 1]
|
|
ld h,a
|
|
srl c
|
|
jr z,.savePointer1
|
|
.pointerAdjustmentLoop1
|
|
ld a,[wWestConnectedMapWidth] ; width of connected map
|
|
add a,MAP_BORDER * 2
|
|
ld e,a
|
|
ld d,0
|
|
ld b,0
|
|
add hl,de
|
|
dec c
|
|
jr nz,.pointerAdjustmentLoop1
|
|
.savePointer1
|
|
ld a,l
|
|
ld [wCurrentTileBlockMapViewPointer],a ; pointer to upper left corner of current tile block map section
|
|
ld a,h
|
|
ld [wCurrentTileBlockMapViewPointer + 1],a
|
|
jp .loadNewMap
|
|
.checkEastMap
|
|
ld b,a
|
|
ld a,[wCurrentMapWidth2] ; map width
|
|
cp b
|
|
jr nz,.checkNorthMap
|
|
ld a,[wMapConn4Ptr]
|
|
ld [wCurMap],a
|
|
ld a,[wEastConnectedMapXAlignment] ; new X coordinate upon entering east map
|
|
ld [wXCoord],a
|
|
ld a,[wYCoord]
|
|
ld c,a
|
|
ld a,[wEastConnectedMapYAlignment] ; Y adjustment upon entering east map
|
|
add c
|
|
ld c,a
|
|
ld [wYCoord],a
|
|
ld a,[wEastConnectedMapViewPointer] ; pointer to upper left corner of map without adjustment for Y position
|
|
ld l,a
|
|
ld a,[wEastConnectedMapViewPointer + 1]
|
|
ld h,a
|
|
srl c
|
|
jr z,.savePointer2
|
|
.pointerAdjustmentLoop2
|
|
ld a,[wEastConnectedMapWidth]
|
|
add a,MAP_BORDER * 2
|
|
ld e,a
|
|
ld d,0
|
|
ld b,0
|
|
add hl,de
|
|
dec c
|
|
jr nz,.pointerAdjustmentLoop2
|
|
.savePointer2
|
|
ld a,l
|
|
ld [wCurrentTileBlockMapViewPointer],a ; pointer to upper left corner of current tile block map section
|
|
ld a,h
|
|
ld [wCurrentTileBlockMapViewPointer + 1],a
|
|
jp .loadNewMap
|
|
.checkNorthMap
|
|
ld a,[wYCoord]
|
|
cp a,$ff
|
|
jr nz,.checkSouthMap
|
|
ld a,[wMapConn1Ptr]
|
|
ld [wCurMap],a
|
|
ld a,[wNorthConnectedMapYAlignment] ; new Y coordinate upon entering north map
|
|
ld [wYCoord],a
|
|
ld a,[wXCoord]
|
|
ld c,a
|
|
ld a,[wNorthConnectedMapXAlignment] ; X adjustment upon entering north map
|
|
add c
|
|
ld c,a
|
|
ld [wXCoord],a
|
|
ld a,[wNorthConnectedMapViewPointer] ; pointer to upper left corner of map without adjustment for X position
|
|
ld l,a
|
|
ld a,[wNorthConnectedMapViewPointer + 1]
|
|
ld h,a
|
|
ld b,0
|
|
srl c
|
|
add hl,bc
|
|
ld a,l
|
|
ld [wCurrentTileBlockMapViewPointer],a ; pointer to upper left corner of current tile block map section
|
|
ld a,h
|
|
ld [wCurrentTileBlockMapViewPointer + 1],a
|
|
jp .loadNewMap
|
|
.checkSouthMap
|
|
ld b,a
|
|
ld a,[wCurrentMapHeight2]
|
|
cp b
|
|
jr nz,.didNotEnterConnectedMap
|
|
ld a,[wMapConn2Ptr]
|
|
ld [wCurMap],a
|
|
ld a,[wSouthConnectedMapYAlignment] ; new Y coordinate upon entering south map
|
|
ld [wYCoord],a
|
|
ld a,[wXCoord]
|
|
ld c,a
|
|
ld a,[wSouthConnectedMapXAlignment] ; X adjustment upon entering south map
|
|
add c
|
|
ld c,a
|
|
ld [wXCoord],a
|
|
ld a,[wSouthConnectedMapViewPointer] ; pointer to upper left corner of map without adjustment for X position
|
|
ld l,a
|
|
ld a,[wSouthConnectedMapViewPointer + 1]
|
|
ld h,a
|
|
ld b,0
|
|
srl c
|
|
add hl,bc
|
|
ld a,l
|
|
ld [wCurrentTileBlockMapViewPointer],a ; pointer to upper left corner of current tile block map section
|
|
ld a,h
|
|
ld [wCurrentTileBlockMapViewPointer + 1],a
|
|
.loadNewMap ; load the connected map that was entered
|
|
call LoadMapHeader
|
|
call PlayDefaultMusicFadeOutCurrent
|
|
ld b, SET_PAL_OVERWORLD
|
|
call RunPaletteCommand
|
|
; Since the sprite set shouldn't change, this will just update VRAM slots at
|
|
; $C2XE without loading any tile patterns.
|
|
callba InitMapSprites
|
|
call LoadTileBlockMap
|
|
jp OverworldLoopLessDelay
|
|
.didNotEnterConnectedMap
|
|
jp OverworldLoop
|
|
|
|
; function to play a sound when changing maps
|
|
PlayMapChangeSound:: ; 08c9 (0:08c9)
|
|
aCoord 8, 8 ; upper left tile of the 4x4 square the player's sprite is standing on
|
|
cp a,$0b ; door tile in tileset 0
|
|
jr nz,.didNotGoThroughDoor
|
|
ld a,SFX_GO_INSIDE
|
|
jr .playSound
|
|
.didNotGoThroughDoor
|
|
ld a,SFX_GO_OUTSIDE
|
|
.playSound
|
|
call PlaySound
|
|
ld a,[wMapPalOffset]
|
|
and a
|
|
ret nz
|
|
jp GBFadeOutToBlack
|
|
|
|
CheckIfInOutsideMap:: ; 08e1 (0:08e1)
|
|
; If the player is in an outside map (a town or route), set the z flag
|
|
ld a, [wCurMapTileset]
|
|
and a ; most towns/routes have tileset 0 (OVERWORLD)
|
|
ret z
|
|
cp PLATEAU ; Route 23 / Indigo Plateau
|
|
ret
|
|
|
|
; this function is an extra check that sometimes has to pass in order to warp, beyond just standing on a warp
|
|
; the "sometimes" qualification is necessary because of CheckWarpsNoCollision's behavior
|
|
; depending on the map, either "function 1" or "function 2" is used for the check
|
|
; "function 1" passes when the player is at the edge of the map and is facing towards the outside of the map
|
|
; "function 2" passes when the the tile in front of the player is among a certain set
|
|
; sets carry if the check passes, otherwise clears carry
|
|
ExtraWarpCheck:: ; 08e9 (0:08e9)
|
|
ld a, [wCurMap]
|
|
cp SS_ANNE_3
|
|
jr z, .useFunction1
|
|
cp ROCKET_HIDEOUT_1
|
|
jr z, .useFunction2
|
|
cp ROCKET_HIDEOUT_2
|
|
jr z, .useFunction2
|
|
cp ROCKET_HIDEOUT_4
|
|
jr z, .useFunction2
|
|
cp ROCK_TUNNEL_1
|
|
jr z, .useFunction2
|
|
ld a, [wCurMapTileset]
|
|
and a ; outside tileset (OVERWORLD)
|
|
jr z, .useFunction2
|
|
cp SHIP ; S.S. Anne tileset
|
|
jr z, .useFunction2
|
|
cp SHIP_PORT ; Vermilion Port tileset
|
|
jr z, .useFunction2
|
|
cp PLATEAU ; Indigo Plateau tileset
|
|
jr z, .useFunction2
|
|
.useFunction1
|
|
ld hl, IsPlayerFacingEdgeOfMap
|
|
jr .doBankswitch
|
|
.useFunction2
|
|
ld hl, IsWarpTileInFrontOfPlayer
|
|
.doBankswitch
|
|
ld b, BANK(IsWarpTileInFrontOfPlayer)
|
|
jp Bankswitch
|
|
|
|
MapEntryAfterBattle:: ; 091f (0:091f)
|
|
callba IsPlayerStandingOnWarp ; for enabling warp testing after collisions
|
|
ld a,[wMapPalOffset]
|
|
and a
|
|
jp z,GBFadeInFromWhite
|
|
jp LoadGBPal
|
|
|
|
HandleBlackOut::
|
|
; For when all the player's pokemon faint.
|
|
; Does not print the "blacked out" message.
|
|
|
|
call GBFadeOutToBlack
|
|
ld a, $08
|
|
call StopMusic
|
|
ld hl, wd72e
|
|
res 5, [hl]
|
|
ld a, Bank(ResetStatusAndHalveMoneyOnBlackout) ; also Bank(SpecialWarpIn) and Bank(SpecialEnterMap)
|
|
ld [H_LOADEDROMBANK], a
|
|
ld [MBC1RomBank], a
|
|
call ResetStatusAndHalveMoneyOnBlackout
|
|
call SpecialWarpIn
|
|
call PlayDefaultMusicFadeOutCurrent
|
|
jp SpecialEnterMap
|
|
|
|
StopMusic::
|
|
ld [wAudioFadeOutControl], a
|
|
ld a, $ff
|
|
ld [wNewSoundID], a
|
|
call PlaySound
|
|
.wait
|
|
ld a, [wAudioFadeOutControl]
|
|
and a
|
|
jr nz, .wait
|
|
jp StopAllSounds
|
|
|
|
HandleFlyWarpOrDungeonWarp::
|
|
call UpdateSprites
|
|
call Delay3
|
|
xor a
|
|
ld [wBattleResult], a
|
|
ld [wWalkBikeSurfState], a
|
|
ld [wIsInBattle], a
|
|
ld [wMapPalOffset], a
|
|
ld hl, wd732
|
|
set 2, [hl] ; fly warp or dungeon warp
|
|
res 5, [hl] ; forced to ride bike
|
|
call LeaveMapAnim
|
|
ld a, Bank(SpecialWarpIn)
|
|
ld [H_LOADEDROMBANK], a
|
|
ld [MBC1RomBank], a
|
|
call SpecialWarpIn
|
|
jp SpecialEnterMap
|
|
|
|
LeaveMapAnim::
|
|
jpba _LeaveMapAnim
|
|
|
|
LoadPlayerSpriteGraphics::
|
|
; Load sprite graphics based on whether the player is standing, biking, or surfing.
|
|
|
|
; 0: standing
|
|
; 1: biking
|
|
; 2: surfing
|
|
|
|
ld a, [wWalkBikeSurfState]
|
|
dec a
|
|
jr z, .ridingBike
|
|
|
|
ld a, [hTilesetType]
|
|
and a
|
|
jr nz, .determineGraphics
|
|
jr .startWalking
|
|
|
|
.ridingBike
|
|
; If the bike can't be used,
|
|
; start walking instead.
|
|
call IsBikeRidingAllowed
|
|
jr c, .determineGraphics
|
|
|
|
.startWalking
|
|
xor a
|
|
ld [wWalkBikeSurfState], a
|
|
ld [wWalkBikeSurfStateCopy], a
|
|
jp LoadWalkingPlayerSpriteGraphics
|
|
|
|
.determineGraphics
|
|
ld a, [wWalkBikeSurfState]
|
|
and a
|
|
jp z, LoadWalkingPlayerSpriteGraphics
|
|
dec a
|
|
jp z, LoadBikePlayerSpriteGraphics
|
|
dec a
|
|
jp z, LoadSurfingPlayerSpriteGraphics
|
|
jp LoadWalkingPlayerSpriteGraphics
|
|
|
|
IsBikeRidingAllowed::
|
|
; The bike can be used on Route 23 and Indigo Plateau,
|
|
; or maps with tilesets in BikeRidingTilesets.
|
|
; Return carry if biking is allowed.
|
|
|
|
ld a, [wCurMap]
|
|
cp ROUTE_23
|
|
jr z, .allowed
|
|
cp INDIGO_PLATEAU
|
|
jr z, .allowed
|
|
|
|
ld a, [wCurMapTileset]
|
|
ld b, a
|
|
ld hl, BikeRidingTilesets
|
|
.loop
|
|
ld a, [hli]
|
|
cp b
|
|
jr z, .allowed
|
|
inc a
|
|
jr nz, .loop
|
|
and a
|
|
ret
|
|
|
|
.allowed
|
|
scf
|
|
ret
|
|
|
|
INCLUDE "data/bike_riding_tilesets.asm"
|
|
|
|
; load the tile pattern data of the current tileset into VRAM
|
|
LoadTilesetTilePatternData:: ; 09e8 (0:09e8)
|
|
ld a,[wTileSetGFXPtr]
|
|
ld l,a
|
|
ld a,[wTileSetGFXPtr + 1]
|
|
ld h,a
|
|
ld de,vTileset
|
|
ld bc,$600
|
|
ld a,[wTileSetBank]
|
|
jp FarCopyData2
|
|
|
|
; this loads the current maps complete tile map (which references blocks, not individual tiles) to C6E8
|
|
; it can also load partial tile maps of connected maps into a border of length 3 around the current map
|
|
LoadTileBlockMap:: ; 09fc (0:09fc)
|
|
; fill C6E8-CBFB with the background tile
|
|
ld hl,wOverworldMap
|
|
ld a,[wMapBackgroundTile]
|
|
ld d,a
|
|
ld bc,$0514
|
|
.backgroundTileLoop
|
|
ld a,d
|
|
ld [hli],a
|
|
dec bc
|
|
ld a,c
|
|
or b
|
|
jr nz,.backgroundTileLoop
|
|
; load tile map of current map (made of tile block IDs)
|
|
; a 3-byte border at the edges of the map is kept so that there is space for map connections
|
|
ld hl,wOverworldMap
|
|
ld a,[wCurMapWidth]
|
|
ld [hMapWidth],a
|
|
add a,MAP_BORDER * 2 ; east and west
|
|
ld [hMapStride],a ; map width + border
|
|
ld b,0
|
|
ld c,a
|
|
; make space for north border (next 3 lines)
|
|
add hl,bc
|
|
add hl,bc
|
|
add hl,bc
|
|
ld c,MAP_BORDER
|
|
add hl,bc ; this puts us past the (west) border
|
|
ld a,[wMapDataPtr] ; tile map pointer
|
|
ld e,a
|
|
ld a,[wMapDataPtr + 1]
|
|
ld d,a ; de = tile map pointer
|
|
ld a,[wCurMapHeight]
|
|
ld b,a
|
|
.rowLoop ; copy one row each iteration
|
|
push hl
|
|
ld a,[hMapWidth] ; map width (without border)
|
|
ld c,a
|
|
.rowInnerLoop
|
|
ld a,[de]
|
|
inc de
|
|
ld [hli],a
|
|
dec c
|
|
jr nz,.rowInnerLoop
|
|
; add the map width plus the border to the base address of the current row to get the next row's address
|
|
pop hl
|
|
ld a,[hMapStride] ; map width + border
|
|
add l
|
|
ld l,a
|
|
jr nc,.noCarry
|
|
inc h
|
|
.noCarry
|
|
dec b
|
|
jr nz,.rowLoop
|
|
.northConnection
|
|
ld a,[wMapConn1Ptr]
|
|
cp a,$ff
|
|
jr z,.southConnection
|
|
call SwitchToMapRomBank
|
|
ld a,[wNorthConnectionStripSrc]
|
|
ld l,a
|
|
ld a,[wNorthConnectionStripSrc + 1]
|
|
ld h,a
|
|
ld a,[wNorthConnectionStripDest]
|
|
ld e,a
|
|
ld a,[wNorthConnectionStripDest + 1]
|
|
ld d,a
|
|
ld a,[wNorthConnectionStripWidth]
|
|
ld [hNorthSouthConnectionStripWidth],a
|
|
ld a,[wNorthConnectedMapWidth]
|
|
ld [hNorthSouthConnectedMapWidth],a
|
|
call LoadNorthSouthConnectionsTileMap
|
|
.southConnection
|
|
ld a,[wMapConn2Ptr]
|
|
cp a,$ff
|
|
jr z,.westConnection
|
|
call SwitchToMapRomBank
|
|
ld a,[wSouthConnectionStripSrc]
|
|
ld l,a
|
|
ld a,[wSouthConnectionStripSrc + 1]
|
|
ld h,a
|
|
ld a,[wSouthConnectionStripDest]
|
|
ld e,a
|
|
ld a,[wSouthConnectionStripDest + 1]
|
|
ld d,a
|
|
ld a,[wSouthConnectionStripWidth]
|
|
ld [hNorthSouthConnectionStripWidth],a
|
|
ld a,[wSouthConnectedMapWidth]
|
|
ld [hNorthSouthConnectedMapWidth],a
|
|
call LoadNorthSouthConnectionsTileMap
|
|
.westConnection
|
|
ld a,[wMapConn3Ptr]
|
|
cp a,$ff
|
|
jr z,.eastConnection
|
|
call SwitchToMapRomBank
|
|
ld a,[wWestConnectionStripSrc]
|
|
ld l,a
|
|
ld a,[wWestConnectionStripSrc + 1]
|
|
ld h,a
|
|
ld a,[wWestConnectionStripDest]
|
|
ld e,a
|
|
ld a,[wWestConnectionStripDest + 1]
|
|
ld d,a
|
|
ld a,[wWestConnectionStripHeight]
|
|
ld b,a
|
|
ld a,[wWestConnectedMapWidth]
|
|
ld [hEastWestConnectedMapWidth],a
|
|
call LoadEastWestConnectionsTileMap
|
|
.eastConnection
|
|
ld a,[wMapConn4Ptr]
|
|
cp a,$ff
|
|
jr z,.done
|
|
call SwitchToMapRomBank
|
|
ld a,[wEastConnectionStripSrc]
|
|
ld l,a
|
|
ld a,[wEastConnectionStripSrc + 1]
|
|
ld h,a
|
|
ld a,[wEastConnectionStripDest]
|
|
ld e,a
|
|
ld a,[wEastConnectionStripDest + 1]
|
|
ld d,a
|
|
ld a,[wEastConnectionStripHeight]
|
|
ld b,a
|
|
ld a,[wEastConnectedMapWidth]
|
|
ld [hEastWestConnectedMapWidth],a
|
|
call LoadEastWestConnectionsTileMap
|
|
.done
|
|
ret
|
|
|
|
LoadNorthSouthConnectionsTileMap:: ; 0ade (0:0ade)
|
|
ld c,MAP_BORDER
|
|
.loop
|
|
push de
|
|
push hl
|
|
ld a,[hNorthSouthConnectionStripWidth]
|
|
ld b,a
|
|
.innerLoop
|
|
ld a,[hli]
|
|
ld [de],a
|
|
inc de
|
|
dec b
|
|
jr nz,.innerLoop
|
|
pop hl
|
|
pop de
|
|
ld a,[hNorthSouthConnectedMapWidth]
|
|
add l
|
|
ld l,a
|
|
jr nc,.noCarry1
|
|
inc h
|
|
.noCarry1
|
|
ld a,[wCurMapWidth]
|
|
add a,MAP_BORDER * 2
|
|
add e
|
|
ld e,a
|
|
jr nc,.noCarry2
|
|
inc d
|
|
.noCarry2
|
|
dec c
|
|
jr nz,.loop
|
|
ret
|
|
|
|
LoadEastWestConnectionsTileMap:: ; 0b02 (0:0b02)
|
|
push hl
|
|
push de
|
|
ld c,MAP_BORDER
|
|
.innerLoop
|
|
ld a,[hli]
|
|
ld [de],a
|
|
inc de
|
|
dec c
|
|
jr nz,.innerLoop
|
|
pop de
|
|
pop hl
|
|
ld a,[hEastWestConnectedMapWidth]
|
|
add l
|
|
ld l,a
|
|
jr nc,.noCarry1
|
|
inc h
|
|
.noCarry1
|
|
ld a,[wCurMapWidth]
|
|
add a,MAP_BORDER * 2
|
|
add e
|
|
ld e,a
|
|
jr nc,.noCarry2
|
|
inc d
|
|
.noCarry2
|
|
dec b
|
|
jr nz,LoadEastWestConnectionsTileMap
|
|
ret
|
|
|
|
; function to check if there is a sign or sprite in front of the player
|
|
; if so, it is stored in [hSpriteIndexOrTextID]
|
|
; if not, [hSpriteIndexOrTextID] is set to 0
|
|
IsSpriteOrSignInFrontOfPlayer:: ; 0b23 (0:0b23)
|
|
xor a
|
|
ld [hSpriteIndexOrTextID],a
|
|
ld a,[wNumSigns]
|
|
and a
|
|
jr z,.extendRangeOverCounter
|
|
; if there are signs
|
|
predef GetTileAndCoordsInFrontOfPlayer ; get the coordinates in front of the player in de
|
|
ld hl,wSignCoords
|
|
ld a,[wNumSigns]
|
|
ld b,a
|
|
ld c,0
|
|
.signLoop
|
|
inc c
|
|
ld a,[hli] ; sign Y
|
|
cp d
|
|
jr z,.yCoordMatched
|
|
inc hl
|
|
jr .retry
|
|
.yCoordMatched
|
|
ld a,[hli] ; sign X
|
|
cp e
|
|
jr nz,.retry
|
|
.xCoordMatched
|
|
; found sign
|
|
push hl
|
|
push bc
|
|
ld hl,wSignTextIDs
|
|
ld b,0
|
|
dec c
|
|
add hl,bc
|
|
ld a,[hl]
|
|
ld [hSpriteIndexOrTextID],a ; store sign text ID
|
|
pop bc
|
|
pop hl
|
|
ret
|
|
.retry
|
|
dec b
|
|
jr nz,.signLoop
|
|
; check if the player is front of a counter in a pokemon center, pokemart, etc. and if so, extend the range at which he can talk to the NPC
|
|
.extendRangeOverCounter
|
|
predef GetTileAndCoordsInFrontOfPlayer ; get the tile in front of the player in c
|
|
ld hl,wTileSetTalkingOverTiles ; list of tiles that extend talking range (counter tiles)
|
|
ld b,3
|
|
ld d,$20 ; talking range in pixels (long range)
|
|
.counterTilesLoop
|
|
ld a,[hli]
|
|
cp c
|
|
jr z,IsSpriteInFrontOfPlayer2 ; jumps if the tile in front of the player is a counter tile
|
|
dec b
|
|
jr nz,.counterTilesLoop
|
|
|
|
; part of the above function, but sometimes its called on its own, when signs are irrelevant
|
|
; the caller must zero [hSpriteIndexOrTextID]
|
|
IsSpriteInFrontOfPlayer:: ; 0b6b (0:0b6b)
|
|
ld d,$10 ; talking range in pixels (normal range)
|
|
IsSpriteInFrontOfPlayer2:: ; 0b6d (0:0b6d)
|
|
lb bc, $3c, $40 ; Y and X position of player sprite
|
|
ld a,[wSpriteStateData1 + 9] ; direction the player is facing
|
|
.checkIfPlayerFacingUp
|
|
cp SPRITE_FACING_UP
|
|
jr nz,.checkIfPlayerFacingDown
|
|
; facing up
|
|
ld a,b
|
|
sub d
|
|
ld b,a
|
|
ld a,PLAYER_DIR_UP
|
|
jr .doneCheckingDirection
|
|
.checkIfPlayerFacingDown
|
|
cp SPRITE_FACING_DOWN
|
|
jr nz,.checkIfPlayerFacingRight
|
|
; facing down
|
|
ld a,b
|
|
add d
|
|
ld b,a
|
|
ld a,PLAYER_DIR_DOWN
|
|
jr .doneCheckingDirection
|
|
.checkIfPlayerFacingRight
|
|
cp SPRITE_FACING_RIGHT
|
|
jr nz,.playerFacingLeft
|
|
; facing right
|
|
ld a,c
|
|
add d
|
|
ld c,a
|
|
ld a,PLAYER_DIR_RIGHT
|
|
jr .doneCheckingDirection
|
|
.playerFacingLeft
|
|
; facing left
|
|
ld a,c
|
|
sub d
|
|
ld c,a
|
|
ld a,PLAYER_DIR_LEFT
|
|
.doneCheckingDirection
|
|
ld [wPlayerDirection],a
|
|
ld a,[wNumSprites] ; number of sprites
|
|
and a
|
|
ret z
|
|
; if there are sprites
|
|
ld hl,wSpriteStateData1 + $10
|
|
ld d,a
|
|
ld e,$01
|
|
.spriteLoop
|
|
push hl
|
|
ld a,[hli] ; image (0 if no sprite)
|
|
and a
|
|
jr z,.nextSprite
|
|
inc l
|
|
ld a,[hli] ; sprite visibility
|
|
inc a
|
|
jr z,.nextSprite
|
|
inc l
|
|
ld a,[hli] ; Y location
|
|
cp b
|
|
jr nz,.nextSprite
|
|
inc l
|
|
ld a,[hl] ; X location
|
|
cp c
|
|
jr z,.foundSpriteInFrontOfPlayer
|
|
.nextSprite
|
|
pop hl
|
|
ld a,l
|
|
add a,$10
|
|
ld l,a
|
|
inc e
|
|
dec d
|
|
jr nz,.spriteLoop
|
|
ret
|
|
.foundSpriteInFrontOfPlayer
|
|
pop hl
|
|
ld a,l
|
|
and a,$f0
|
|
inc a
|
|
ld l,a ; hl = $c1x1
|
|
set 7,[hl] ; set flag to make the sprite face the player
|
|
ld a,e
|
|
ld [hSpriteIndexOrTextID],a
|
|
ret
|
|
|
|
; function to check if the player will jump down a ledge and check if the tile ahead is passable (when not surfing)
|
|
; sets the carry flag if there is a collision, and unsets it if there isn't a collision
|
|
CollisionCheckOnLand:: ; 0bd1 (0:0bd1)
|
|
ld a,[wd736]
|
|
bit 6,a ; is the player jumping?
|
|
jr nz,.noCollision
|
|
; if not jumping a ledge
|
|
ld a,[wSimulatedJoypadStatesIndex]
|
|
and a
|
|
jr nz,.noCollision ; no collisions when the player's movements are being controlled by the game
|
|
ld a,[wPlayerDirection] ; the direction that the player is trying to go in
|
|
ld d,a
|
|
ld a,[wSpriteStateData1 + 12] ; the player sprite's collision data (bit field) (set in the sprite movement code)
|
|
and d ; check if a sprite is in the direction the player is trying to go
|
|
jr nz,.collision
|
|
xor a
|
|
ld [hSpriteIndexOrTextID],a
|
|
call IsSpriteInFrontOfPlayer ; check for sprite collisions again? when does the above check fail to detect a sprite collision?
|
|
ld a,[hSpriteIndexOrTextID]
|
|
and a ; was there a sprite collision?
|
|
jr nz,.collision
|
|
; if no sprite collision
|
|
ld hl,TilePairCollisionsLand
|
|
call CheckForJumpingAndTilePairCollisions
|
|
jr c,.collision
|
|
call CheckTilePassable
|
|
jr nc,.noCollision
|
|
.collision
|
|
ld a,[wChannelSoundIDs + CH4]
|
|
cp a,SFX_COLLISION ; check if collision sound is already playing
|
|
jr z,.setCarry
|
|
ld a,SFX_COLLISION
|
|
call PlaySound ; play collision sound (if it's not already playing)
|
|
.setCarry
|
|
scf
|
|
ret
|
|
.noCollision
|
|
and a
|
|
ret
|
|
|
|
; function that checks if the tile in front of the player is passable
|
|
; clears carry if it is, sets carry if not
|
|
CheckTilePassable:: ; 0c10 (0:0c10)
|
|
predef GetTileAndCoordsInFrontOfPlayer ; get tile in front of player
|
|
ld a,[wTileInFrontOfPlayer] ; tile in front of player
|
|
ld c,a
|
|
ld hl,wTileSetCollisionPtr ; pointer to list of passable tiles
|
|
ld a,[hli]
|
|
ld h,[hl]
|
|
ld l,a ; hl now points to passable tiles
|
|
.loop
|
|
ld a,[hli]
|
|
cp a,$ff
|
|
jr z,.tileNotPassable
|
|
cp c
|
|
ret z
|
|
jr .loop
|
|
.tileNotPassable
|
|
scf
|
|
ret
|
|
|
|
; check if the player is going to jump down a small ledge
|
|
; and check for collisions that only occur between certain pairs of tiles
|
|
; Input: hl - address of directional collision data
|
|
; sets carry if there is a collision and unsets carry if not
|
|
CheckForJumpingAndTilePairCollisions:: ; 0c2a (0:0c2a)
|
|
push hl
|
|
predef GetTileAndCoordsInFrontOfPlayer ; get the tile in front of the player
|
|
push de
|
|
push bc
|
|
callba HandleLedges ; check if the player is trying to jump a ledge
|
|
pop bc
|
|
pop de
|
|
pop hl
|
|
and a
|
|
ld a,[wd736]
|
|
bit 6,a ; is the player jumping?
|
|
ret nz
|
|
; if not jumping
|
|
|
|
CheckForTilePairCollisions2:: ; 0c44 (0:0c44)
|
|
aCoord 8, 9 ; tile the player is on
|
|
ld [wTilePlayerStandingOn],a
|
|
|
|
CheckForTilePairCollisions:: ; 0c4a (0:0c4a)
|
|
ld a,[wTileInFrontOfPlayer]
|
|
ld c,a
|
|
.tilePairCollisionLoop
|
|
ld a,[wCurMapTileset] ; tileset number
|
|
ld b,a
|
|
ld a,[hli]
|
|
cp a,$ff
|
|
jr z,.noMatch
|
|
cp b
|
|
jr z,.tilesetMatches
|
|
inc hl
|
|
.retry
|
|
inc hl
|
|
jr .tilePairCollisionLoop
|
|
.tilesetMatches
|
|
ld a,[wTilePlayerStandingOn] ; tile the player is on
|
|
ld b,a
|
|
ld a,[hl]
|
|
cp b
|
|
jr z,.currentTileMatchesFirstInPair
|
|
inc hl
|
|
ld a,[hl]
|
|
cp b
|
|
jr z,.currentTileMatchesSecondInPair
|
|
jr .retry
|
|
.currentTileMatchesFirstInPair
|
|
inc hl
|
|
ld a,[hl]
|
|
cp c
|
|
jr z,.foundMatch
|
|
jr .tilePairCollisionLoop
|
|
.currentTileMatchesSecondInPair
|
|
dec hl
|
|
ld a,[hli]
|
|
cp c
|
|
inc hl
|
|
jr nz,.tilePairCollisionLoop
|
|
.foundMatch
|
|
scf
|
|
ret
|
|
.noMatch
|
|
and a
|
|
ret
|
|
|
|
; FORMAT: tileset number, tile 1, tile 2
|
|
; terminated by 0xFF
|
|
; these entries indicate that the player may not cross between tile 1 and tile 2
|
|
; it's mainly used to simulate differences in elevation
|
|
|
|
TilePairCollisionsLand:: ; 0c7e (0:0c7e)
|
|
db CAVERN, $20, $05
|
|
db CAVERN, $41, $05
|
|
db FOREST, $30, $2E
|
|
db CAVERN, $2A, $05
|
|
db CAVERN, $05, $21
|
|
db FOREST, $52, $2E
|
|
db FOREST, $55, $2E
|
|
db FOREST, $56, $2E
|
|
db FOREST, $20, $2E
|
|
db FOREST, $5E, $2E
|
|
db FOREST, $5F, $2E
|
|
db $FF
|
|
|
|
TilePairCollisionsWater:: ; 0ca0 (0:0ca0)
|
|
db FOREST, $14, $2E
|
|
db FOREST, $48, $2E
|
|
db CAVERN, $14, $05
|
|
db $FF
|
|
|
|
; this builds a tile map from the tile block map based on the current X/Y coordinates of the player's character
|
|
LoadCurrentMapView:: ; 0caa (0:0caa)
|
|
ld a,[H_LOADEDROMBANK]
|
|
push af
|
|
ld a,[wTileSetBank] ; tile data ROM bank
|
|
ld [H_LOADEDROMBANK],a
|
|
ld [MBC1RomBank],a ; switch to ROM bank that contains tile data
|
|
ld a,[wCurrentTileBlockMapViewPointer] ; address of upper left corner of current map view
|
|
ld e,a
|
|
ld a,[wCurrentTileBlockMapViewPointer + 1]
|
|
ld d,a
|
|
ld hl,wTileMapBackup
|
|
ld b,$05
|
|
.rowLoop ; each loop iteration fills in one row of tile blocks
|
|
push hl
|
|
push de
|
|
ld c,$06
|
|
.rowInnerLoop ; loop to draw each tile block of the current row
|
|
push bc
|
|
push de
|
|
push hl
|
|
ld a,[de]
|
|
ld c,a ; tile block number
|
|
call DrawTileBlock
|
|
pop hl
|
|
pop de
|
|
pop bc
|
|
inc hl
|
|
inc hl
|
|
inc hl
|
|
inc hl
|
|
inc de
|
|
dec c
|
|
jr nz,.rowInnerLoop
|
|
; update tile block map pointer to next row's address
|
|
pop de
|
|
ld a,[wCurMapWidth]
|
|
add a,MAP_BORDER * 2
|
|
add e
|
|
ld e,a
|
|
jr nc,.noCarry
|
|
inc d
|
|
.noCarry
|
|
; update tile map pointer to next row's address
|
|
pop hl
|
|
ld a,$60
|
|
add l
|
|
ld l,a
|
|
jr nc,.noCarry2
|
|
inc h
|
|
.noCarry2
|
|
dec b
|
|
jr nz,.rowLoop
|
|
ld hl,wTileMapBackup
|
|
ld bc,$0000
|
|
.adjustForYCoordWithinTileBlock
|
|
ld a,[wYBlockCoord]
|
|
and a
|
|
jr z,.adjustForXCoordWithinTileBlock
|
|
ld bc,$0030
|
|
add hl,bc
|
|
.adjustForXCoordWithinTileBlock
|
|
ld a,[wXBlockCoord]
|
|
and a
|
|
jr z,.copyToVisibleAreaBuffer
|
|
ld bc,$0002
|
|
add hl,bc
|
|
.copyToVisibleAreaBuffer
|
|
coord de, 0, 0 ; base address for the tiles that are directly transferred to VRAM during V-blank
|
|
ld b, SCREEN_HEIGHT
|
|
.rowLoop2
|
|
ld c, SCREEN_WIDTH
|
|
.rowInnerLoop2
|
|
ld a,[hli]
|
|
ld [de],a
|
|
inc de
|
|
dec c
|
|
jr nz,.rowInnerLoop2
|
|
ld a,$04
|
|
add l
|
|
ld l,a
|
|
jr nc,.noCarry3
|
|
inc h
|
|
.noCarry3
|
|
dec b
|
|
jr nz,.rowLoop2
|
|
pop af
|
|
ld [H_LOADEDROMBANK],a
|
|
ld [MBC1RomBank],a ; restore previous ROM bank
|
|
ret
|
|
|
|
AdvancePlayerSprite:: ; 0d27 (0:0d27)
|
|
ld a,[wSpriteStateData1 + 3] ; delta Y
|
|
ld b,a
|
|
ld a,[wSpriteStateData1 + 5] ; delta X
|
|
ld c,a
|
|
ld hl,wWalkCounter ; walking animation counter
|
|
dec [hl]
|
|
jr nz,.afterUpdateMapCoords
|
|
; if it's the end of the animation, update the player's map coordinates
|
|
ld a,[wYCoord]
|
|
add b
|
|
ld [wYCoord],a
|
|
ld a,[wXCoord]
|
|
add c
|
|
ld [wXCoord],a
|
|
.afterUpdateMapCoords
|
|
ld a,[wWalkCounter] ; walking animation counter
|
|
cp a,$07
|
|
jp nz,.scrollBackgroundAndSprites
|
|
; if this is the first iteration of the animation
|
|
ld a,c
|
|
cp a,$01
|
|
jr nz,.checkIfMovingWest
|
|
; moving east
|
|
ld a,[wMapViewVRAMPointer]
|
|
ld e,a
|
|
and a,$e0
|
|
ld d,a
|
|
ld a,e
|
|
add a,$02
|
|
and a,$1f
|
|
or d
|
|
ld [wMapViewVRAMPointer],a
|
|
jr .adjustXCoordWithinBlock
|
|
.checkIfMovingWest
|
|
cp a,$ff
|
|
jr nz,.checkIfMovingSouth
|
|
; moving west
|
|
ld a,[wMapViewVRAMPointer]
|
|
ld e,a
|
|
and a,$e0
|
|
ld d,a
|
|
ld a,e
|
|
sub a,$02
|
|
and a,$1f
|
|
or d
|
|
ld [wMapViewVRAMPointer],a
|
|
jr .adjustXCoordWithinBlock
|
|
.checkIfMovingSouth
|
|
ld a,b
|
|
cp a,$01
|
|
jr nz,.checkIfMovingNorth
|
|
; moving south
|
|
ld a,[wMapViewVRAMPointer]
|
|
add a,$40
|
|
ld [wMapViewVRAMPointer],a
|
|
jr nc,.adjustXCoordWithinBlock
|
|
ld a,[wMapViewVRAMPointer + 1]
|
|
inc a
|
|
and a,$03
|
|
or a,$98
|
|
ld [wMapViewVRAMPointer + 1],a
|
|
jr .adjustXCoordWithinBlock
|
|
.checkIfMovingNorth
|
|
cp a,$ff
|
|
jr nz,.adjustXCoordWithinBlock
|
|
; moving north
|
|
ld a,[wMapViewVRAMPointer]
|
|
sub a,$40
|
|
ld [wMapViewVRAMPointer],a
|
|
jr nc,.adjustXCoordWithinBlock
|
|
ld a,[wMapViewVRAMPointer + 1]
|
|
dec a
|
|
and a,$03
|
|
or a,$98
|
|
ld [wMapViewVRAMPointer + 1],a
|
|
.adjustXCoordWithinBlock
|
|
ld a,c
|
|
and a
|
|
jr z,.pointlessJump ; mistake?
|
|
.pointlessJump
|
|
ld hl,wXBlockCoord
|
|
ld a,[hl]
|
|
add c
|
|
ld [hl],a
|
|
cp a,$02
|
|
jr nz,.checkForMoveToWestBlock
|
|
; moved into the tile block to the east
|
|
xor a
|
|
ld [hl],a
|
|
ld hl,wXOffsetSinceLastSpecialWarp
|
|
inc [hl]
|
|
ld de,wCurrentTileBlockMapViewPointer
|
|
call MoveTileBlockMapPointerEast
|
|
jr .updateMapView
|
|
.checkForMoveToWestBlock
|
|
cp a,$ff
|
|
jr nz,.adjustYCoordWithinBlock
|
|
; moved into the tile block to the west
|
|
ld a,$01
|
|
ld [hl],a
|
|
ld hl,wXOffsetSinceLastSpecialWarp
|
|
dec [hl]
|
|
ld de,wCurrentTileBlockMapViewPointer
|
|
call MoveTileBlockMapPointerWest
|
|
jr .updateMapView
|
|
.adjustYCoordWithinBlock
|
|
ld hl,wYBlockCoord
|
|
ld a,[hl]
|
|
add b
|
|
ld [hl],a
|
|
cp a,$02
|
|
jr nz,.checkForMoveToNorthBlock
|
|
; moved into the tile block to the south
|
|
xor a
|
|
ld [hl],a
|
|
ld hl,wYOffsetSinceLastSpecialWarp
|
|
inc [hl]
|
|
ld de,wCurrentTileBlockMapViewPointer
|
|
ld a,[wCurMapWidth]
|
|
call MoveTileBlockMapPointerSouth
|
|
jr .updateMapView
|
|
.checkForMoveToNorthBlock
|
|
cp a,$ff
|
|
jr nz,.updateMapView
|
|
; moved into the tile block to the north
|
|
ld a,$01
|
|
ld [hl],a
|
|
ld hl,wYOffsetSinceLastSpecialWarp
|
|
dec [hl]
|
|
ld de,wCurrentTileBlockMapViewPointer
|
|
ld a,[wCurMapWidth]
|
|
call MoveTileBlockMapPointerNorth
|
|
.updateMapView
|
|
call LoadCurrentMapView
|
|
ld a,[wSpriteStateData1 + 3] ; delta Y
|
|
cp a,$01
|
|
jr nz,.checkIfMovingNorth2
|
|
; if moving south
|
|
call ScheduleSouthRowRedraw
|
|
jr .scrollBackgroundAndSprites
|
|
.checkIfMovingNorth2
|
|
cp a,$ff
|
|
jr nz,.checkIfMovingEast2
|
|
; if moving north
|
|
call ScheduleNorthRowRedraw
|
|
jr .scrollBackgroundAndSprites
|
|
.checkIfMovingEast2
|
|
ld a,[wSpriteStateData1 + 5] ; delta X
|
|
cp a,$01
|
|
jr nz,.checkIfMovingWest2
|
|
; if moving east
|
|
call ScheduleEastColumnRedraw
|
|
jr .scrollBackgroundAndSprites
|
|
.checkIfMovingWest2
|
|
cp a,$ff
|
|
jr nz,.scrollBackgroundAndSprites
|
|
; if moving west
|
|
call ScheduleWestColumnRedraw
|
|
.scrollBackgroundAndSprites
|
|
ld a,[wSpriteStateData1 + 3] ; delta Y
|
|
ld b,a
|
|
ld a,[wSpriteStateData1 + 5] ; delta X
|
|
ld c,a
|
|
sla b
|
|
sla c
|
|
ld a,[hSCY]
|
|
add b
|
|
ld [hSCY],a ; update background scroll Y
|
|
ld a,[hSCX]
|
|
add c
|
|
ld [hSCX],a ; update background scroll X
|
|
; shift all the sprites in the direction opposite of the player's motion
|
|
; so that the player appears to move relative to them
|
|
ld hl,wSpriteStateData1 + $14
|
|
ld a,[wNumSprites] ; number of sprites
|
|
and a ; are there any sprites?
|
|
jr z,.done
|
|
ld e,a
|
|
.spriteShiftLoop
|
|
ld a,[hl]
|
|
sub b
|
|
ld [hli],a
|
|
inc l
|
|
ld a,[hl]
|
|
sub c
|
|
ld [hl],a
|
|
ld a,$0e
|
|
add l
|
|
ld l,a
|
|
dec e
|
|
jr nz,.spriteShiftLoop
|
|
.done
|
|
ret
|
|
|
|
; the following four functions are used to move the pointer to the upper left
|
|
; corner of the tile block map in the direction of motion
|
|
|
|
MoveTileBlockMapPointerEast:: ; 0e65 (0:0e65)
|
|
ld a,[de]
|
|
add a,$01
|
|
ld [de],a
|
|
ret nc
|
|
inc de
|
|
ld a,[de]
|
|
inc a
|
|
ld [de],a
|
|
ret
|
|
|
|
MoveTileBlockMapPointerWest:: ; 0e6f (0:0e6f)
|
|
ld a,[de]
|
|
sub a,$01
|
|
ld [de],a
|
|
ret nc
|
|
inc de
|
|
ld a,[de]
|
|
dec a
|
|
ld [de],a
|
|
ret
|
|
|
|
MoveTileBlockMapPointerSouth:: ; 0e79 (0:0e79)
|
|
add a,MAP_BORDER * 2
|
|
ld b,a
|
|
ld a,[de]
|
|
add b
|
|
ld [de],a
|
|
ret nc
|
|
inc de
|
|
ld a,[de]
|
|
inc a
|
|
ld [de],a
|
|
ret
|
|
|
|
MoveTileBlockMapPointerNorth:: ; 0e85 (0:0e85)
|
|
add a,MAP_BORDER * 2
|
|
ld b,a
|
|
ld a,[de]
|
|
sub b
|
|
ld [de],a
|
|
ret nc
|
|
inc de
|
|
ld a,[de]
|
|
dec a
|
|
ld [de],a
|
|
ret
|
|
|
|
; the following 6 functions are used to tell the V-blank handler to redraw
|
|
; the portion of the map that was newly exposed due to the player's movement
|
|
|
|
ScheduleNorthRowRedraw:: ; 0e91 (0:0e91)
|
|
coord hl, 0, 0
|
|
call CopyToRedrawRowOrColumnSrcTiles
|
|
ld a,[wMapViewVRAMPointer]
|
|
ld [hRedrawRowOrColumnDest],a
|
|
ld a,[wMapViewVRAMPointer + 1]
|
|
ld [hRedrawRowOrColumnDest + 1],a
|
|
ld a,REDRAW_ROW
|
|
ld [hRedrawRowOrColumnMode],a
|
|
ret
|
|
|
|
CopyToRedrawRowOrColumnSrcTiles:: ; 0ea6 (0:0ea6)
|
|
ld de,wRedrawRowOrColumnSrcTiles
|
|
ld c,2 * SCREEN_WIDTH
|
|
.loop
|
|
ld a,[hli]
|
|
ld [de],a
|
|
inc de
|
|
dec c
|
|
jr nz,.loop
|
|
ret
|
|
|
|
ScheduleSouthRowRedraw:: ; 0eb2 (0:0eb2)
|
|
coord hl, 0, 16
|
|
call CopyToRedrawRowOrColumnSrcTiles
|
|
ld a,[wMapViewVRAMPointer]
|
|
ld l,a
|
|
ld a,[wMapViewVRAMPointer + 1]
|
|
ld h,a
|
|
ld bc,$0200
|
|
add hl,bc
|
|
ld a,h
|
|
and a,$03
|
|
or a,$98
|
|
ld [hRedrawRowOrColumnDest + 1],a
|
|
ld a,l
|
|
ld [hRedrawRowOrColumnDest],a
|
|
ld a,REDRAW_ROW
|
|
ld [hRedrawRowOrColumnMode],a
|
|
ret
|
|
|
|
ScheduleEastColumnRedraw:: ; 0ed3 (0:0ed3)
|
|
coord hl, 18, 0
|
|
call ScheduleColumnRedrawHelper
|
|
ld a,[wMapViewVRAMPointer]
|
|
ld c,a
|
|
and a,$e0
|
|
ld b,a
|
|
ld a,c
|
|
add a,18
|
|
and a,$1f
|
|
or b
|
|
ld [hRedrawRowOrColumnDest],a
|
|
ld a,[wMapViewVRAMPointer + 1]
|
|
ld [hRedrawRowOrColumnDest + 1],a
|
|
ld a,REDRAW_COL
|
|
ld [hRedrawRowOrColumnMode],a
|
|
ret
|
|
|
|
ScheduleColumnRedrawHelper:: ; 0ef2 (0:0ef2)
|
|
ld de,wRedrawRowOrColumnSrcTiles
|
|
ld c,SCREEN_HEIGHT
|
|
.loop
|
|
ld a,[hli]
|
|
ld [de],a
|
|
inc de
|
|
ld a,[hl]
|
|
ld [de],a
|
|
inc de
|
|
ld a,19
|
|
add l
|
|
ld l,a
|
|
jr nc,.noCarry
|
|
inc h
|
|
.noCarry
|
|
dec c
|
|
jr nz,.loop
|
|
ret
|
|
|
|
ScheduleWestColumnRedraw:: ; 0f08 (0:0f08)
|
|
coord hl, 0, 0
|
|
call ScheduleColumnRedrawHelper
|
|
ld a,[wMapViewVRAMPointer]
|
|
ld [hRedrawRowOrColumnDest],a
|
|
ld a,[wMapViewVRAMPointer + 1]
|
|
ld [hRedrawRowOrColumnDest + 1],a
|
|
ld a,REDRAW_COL
|
|
ld [hRedrawRowOrColumnMode],a
|
|
ret
|
|
|
|
; function to write the tiles that make up a tile block to memory
|
|
; Input: c = tile block ID, hl = destination address
|
|
DrawTileBlock:: ; 0f1d (0:0f1d)
|
|
push hl
|
|
ld a,[wTileSetBlocksPtr] ; pointer to tiles
|
|
ld l,a
|
|
ld a,[wTileSetBlocksPtr + 1]
|
|
ld h,a
|
|
ld a,c
|
|
swap a
|
|
ld b,a
|
|
and a,$f0
|
|
ld c,a
|
|
ld a,b
|
|
and a,$0f
|
|
ld b,a ; bc = tile block ID * 0x10
|
|
add hl,bc
|
|
ld d,h
|
|
ld e,l ; de = address of the tile block's tiles
|
|
pop hl
|
|
ld c,$04 ; 4 loop iterations
|
|
.loop ; each loop iteration, write 4 tile numbers
|
|
push bc
|
|
ld a,[de]
|
|
ld [hli],a
|
|
inc de
|
|
ld a,[de]
|
|
ld [hli],a
|
|
inc de
|
|
ld a,[de]
|
|
ld [hli],a
|
|
inc de
|
|
ld a,[de]
|
|
ld [hl],a
|
|
inc de
|
|
ld bc,$0015
|
|
add hl,bc
|
|
pop bc
|
|
dec c
|
|
jr nz,.loop
|
|
ret
|
|
|
|
; function to update joypad state and simulate button presses
|
|
JoypadOverworld:: ; 0f4d (0:0f4d)
|
|
xor a
|
|
ld [wSpriteStateData1 + 3],a
|
|
ld [wSpriteStateData1 + 5],a
|
|
call RunMapScript
|
|
call Joypad
|
|
ld a,[wFlags_D733]
|
|
bit 3,a ; check if a trainer wants a challenge
|
|
jr nz,.notForcedDownwards
|
|
ld a,[wCurMap]
|
|
cp a,ROUTE_17 ; Cycling Road
|
|
jr nz,.notForcedDownwards
|
|
ld a,[hJoyHeld]
|
|
and a,D_DOWN | D_UP | D_LEFT | D_RIGHT | B_BUTTON | A_BUTTON
|
|
jr nz,.notForcedDownwards
|
|
ld a,D_DOWN
|
|
ld [hJoyHeld],a ; on the cycling road, if there isn't a trainer and the player isn't pressing buttons, simulate a down press
|
|
.notForcedDownwards
|
|
ld a,[wd730]
|
|
bit 7,a
|
|
ret z
|
|
; if simulating button presses
|
|
ld a,[hJoyHeld]
|
|
ld b,a
|
|
ld a,[wOverrideSimulatedJoypadStatesMask] ; bit mask for button presses that override simulated ones
|
|
and b
|
|
ret nz ; return if the simulated button presses are overridden
|
|
ld hl,wSimulatedJoypadStatesIndex
|
|
dec [hl]
|
|
ld a,[hl]
|
|
cp a,$ff
|
|
jr z,.doneSimulating ; if the end of the simulated button presses has been reached
|
|
ld hl,wSimulatedJoypadStatesEnd
|
|
add l
|
|
ld l,a
|
|
jr nc,.noCarry
|
|
inc h
|
|
.noCarry
|
|
ld a,[hl]
|
|
ld [hJoyHeld],a ; store simulated button press in joypad state
|
|
and a
|
|
ret nz
|
|
ld [hJoyPressed],a
|
|
ld [hJoyReleased],a
|
|
ret
|
|
; if done simulating button presses
|
|
.doneSimulating
|
|
xor a
|
|
ld [wWastedByteCD3A],a
|
|
ld [wSimulatedJoypadStatesIndex],a
|
|
ld [wSimulatedJoypadStatesEnd],a
|
|
ld [wJoyIgnore],a
|
|
ld [hJoyHeld],a
|
|
ld hl,wd736
|
|
ld a,[hl]
|
|
and a,$f8
|
|
ld [hl],a
|
|
ld hl,wd730
|
|
res 7,[hl]
|
|
ret
|
|
|
|
; function to check the tile ahead to determine if the character should get on land or keep surfing
|
|
; sets carry if there is a collision and clears carry otherwise
|
|
; It seems that this function has a bug in it, but due to luck, it doesn't
|
|
; show up. After detecting a sprite collision, it jumps to the code that
|
|
; checks if the next tile is passable instead of just directly jumping to the
|
|
; "collision detected" code. However, it doesn't store the next tile in c,
|
|
; so the old value of c is used. 2429 is always called before this function,
|
|
; and 2429 always sets c to 0xF0. There is no 0xF0 background tile, so it
|
|
; is considered impassable and it is detected as a collision.
|
|
CollisionCheckOnWater:: ; 0fb7 (0:0fb7)
|
|
ld a,[wd730]
|
|
bit 7,a
|
|
jp nz,.noCollision ; return and clear carry if button presses are being simulated
|
|
ld a,[wPlayerDirection] ; the direction that the player is trying to go in
|
|
ld d,a
|
|
ld a,[wSpriteStateData1 + 12] ; the player sprite's collision data (bit field) (set in the sprite movement code)
|
|
and d ; check if a sprite is in the direction the player is trying to go
|
|
jr nz,.checkIfNextTileIsPassable ; bug?
|
|
ld hl,TilePairCollisionsWater
|
|
call CheckForJumpingAndTilePairCollisions
|
|
jr c,.collision
|
|
predef GetTileAndCoordsInFrontOfPlayer ; get tile in front of player (puts it in c and [wTileInFrontOfPlayer])
|
|
ld a,[wTileInFrontOfPlayer] ; tile in front of player
|
|
cp a,$14 ; water tile
|
|
jr z,.noCollision ; keep surfing if it's a water tile
|
|
cp a,$32 ; either the left tile of the S.S. Anne boarding platform or the tile on eastern coastlines (depending on the current tileset)
|
|
jr z,.checkIfVermilionDockTileset
|
|
cp a,$48 ; tile on right on coast lines in Safari Zone
|
|
jr z,.noCollision ; keep surfing
|
|
; check if the [land] tile in front of the player is passable
|
|
.checkIfNextTileIsPassable
|
|
ld hl,wTileSetCollisionPtr ; pointer to list of passable tiles
|
|
ld a,[hli]
|
|
ld h,[hl]
|
|
ld l,a
|
|
.loop
|
|
ld a,[hli]
|
|
cp a,$ff
|
|
jr z,.collision
|
|
cp c
|
|
jr z,.stopSurfing ; stop surfing if the tile is passable
|
|
jr .loop
|
|
.collision
|
|
ld a,[wChannelSoundIDs + CH4]
|
|
cp a,SFX_COLLISION ; check if collision sound is already playing
|
|
jr z,.setCarry
|
|
ld a,SFX_COLLISION
|
|
call PlaySound ; play collision sound (if it's not already playing)
|
|
.setCarry
|
|
scf
|
|
jr .done
|
|
.noCollision
|
|
and a
|
|
.done
|
|
ret
|
|
.stopSurfing
|
|
xor a
|
|
ld [wWalkBikeSurfState],a
|
|
call LoadPlayerSpriteGraphics
|
|
call PlayDefaultMusic
|
|
jr .noCollision
|
|
.checkIfVermilionDockTileset
|
|
ld a, [wCurMapTileset] ; tileset
|
|
cp SHIP_PORT ; Vermilion Dock tileset
|
|
jr nz, .noCollision ; keep surfing if it's not the boarding platform tile
|
|
jr .stopSurfing ; if it is the boarding platform tile, stop surfing
|
|
|
|
; function to run the current map's script
|
|
RunMapScript:: ; 101b (0:101b)
|
|
push hl
|
|
push de
|
|
push bc
|
|
callba TryPushingBoulder
|
|
ld a,[wFlags_0xcd60]
|
|
bit 1,a ; play boulder dust animation
|
|
jr z,.afterBoulderEffect
|
|
callba DoBoulderDustAnimation
|
|
.afterBoulderEffect
|
|
pop bc
|
|
pop de
|
|
pop hl
|
|
call RunNPCMovementScript
|
|
ld a,[wCurMap] ; current map number
|
|
call SwitchToMapRomBank ; change to the ROM bank the map's data is in
|
|
ld hl,wMapScriptPtr
|
|
ld a,[hli]
|
|
ld h,[hl]
|
|
ld l,a
|
|
ld de,.return
|
|
push de
|
|
jp [hl] ; jump to script
|
|
.return
|
|
ret
|
|
|
|
LoadWalkingPlayerSpriteGraphics:: ; 104d (0:104d)
|
|
ld de,RedSprite
|
|
ld hl,vNPCSprites
|
|
jr LoadPlayerSpriteGraphicsCommon
|
|
|
|
LoadSurfingPlayerSpriteGraphics:: ; 1055 (0:1055)
|
|
ld de,SeelSprite
|
|
ld hl,vNPCSprites
|
|
jr LoadPlayerSpriteGraphicsCommon
|
|
|
|
LoadBikePlayerSpriteGraphics:: ; 105d (0:105d)
|
|
ld de,RedCyclingSprite
|
|
ld hl,vNPCSprites
|
|
|
|
LoadPlayerSpriteGraphicsCommon:: ; 1063 (0:1063)
|
|
push de
|
|
push hl
|
|
lb bc, BANK(RedSprite), $0c
|
|
call CopyVideoData
|
|
pop hl
|
|
pop de
|
|
ld a,$c0
|
|
add e
|
|
ld e,a
|
|
jr nc,.noCarry
|
|
inc d
|
|
.noCarry
|
|
set 3,h
|
|
lb bc, BANK(RedSprite), $0c
|
|
jp CopyVideoData
|
|
|
|
; function to load data from the map header
|
|
LoadMapHeader:: ; 107c (0:107c)
|
|
callba MarkTownVisitedAndLoadMissableObjects
|
|
ld a,[wCurMapTileset]
|
|
ld [wUnusedD119],a
|
|
ld a,[wCurMap]
|
|
call SwitchToMapRomBank
|
|
ld a,[wCurMapTileset]
|
|
ld b,a
|
|
res 7,a
|
|
ld [wCurMapTileset],a
|
|
ld [hPreviousTileset],a
|
|
bit 7,b
|
|
ret nz
|
|
ld hl,MapHeaderPointers
|
|
ld a,[wCurMap]
|
|
sla a
|
|
jr nc,.noCarry1
|
|
inc h
|
|
.noCarry1
|
|
add l
|
|
ld l,a
|
|
jr nc,.noCarry2
|
|
inc h
|
|
.noCarry2
|
|
ld a,[hli]
|
|
ld h,[hl]
|
|
ld l,a ; hl = base of map header
|
|
; copy the first 10 bytes (the fixed area) of the map data to D367-D370
|
|
ld de,wCurMapTileset
|
|
ld c,$0a
|
|
.copyFixedHeaderLoop
|
|
ld a,[hli]
|
|
ld [de],a
|
|
inc de
|
|
dec c
|
|
jr nz,.copyFixedHeaderLoop
|
|
; initialize all the connected maps to disabled at first, before loading the actual values
|
|
ld a,$ff
|
|
ld [wMapConn1Ptr],a
|
|
ld [wMapConn2Ptr],a
|
|
ld [wMapConn3Ptr],a
|
|
ld [wMapConn4Ptr],a
|
|
; copy connection data (if any) to WRAM
|
|
ld a,[wMapConnections]
|
|
ld b,a
|
|
.checkNorth
|
|
bit 3,b
|
|
jr z,.checkSouth
|
|
ld de,wMapConn1Ptr
|
|
call CopyMapConnectionHeader
|
|
.checkSouth
|
|
bit 2,b
|
|
jr z,.checkWest
|
|
ld de,wMapConn2Ptr
|
|
call CopyMapConnectionHeader
|
|
.checkWest
|
|
bit 1,b
|
|
jr z,.checkEast
|
|
ld de,wMapConn3Ptr
|
|
call CopyMapConnectionHeader
|
|
.checkEast
|
|
bit 0,b
|
|
jr z,.getObjectDataPointer
|
|
ld de,wMapConn4Ptr
|
|
call CopyMapConnectionHeader
|
|
.getObjectDataPointer
|
|
ld a,[hli]
|
|
ld [wObjectDataPointerTemp],a
|
|
ld a,[hli]
|
|
ld [wObjectDataPointerTemp + 1],a
|
|
push hl
|
|
ld a,[wObjectDataPointerTemp]
|
|
ld l,a
|
|
ld a,[wObjectDataPointerTemp + 1]
|
|
ld h,a ; hl = base of object data
|
|
ld de,wMapBackgroundTile
|
|
ld a,[hli]
|
|
ld [de],a
|
|
.loadWarpData
|
|
ld a,[hli]
|
|
ld [wNumberOfWarps],a
|
|
and a
|
|
jr z,.loadSignData
|
|
ld c,a
|
|
ld de,wWarpEntries
|
|
.warpLoop ; one warp per loop iteration
|
|
ld b,$04
|
|
.warpInnerLoop
|
|
ld a,[hli]
|
|
ld [de],a
|
|
inc de
|
|
dec b
|
|
jr nz,.warpInnerLoop
|
|
dec c
|
|
jr nz,.warpLoop
|
|
.loadSignData
|
|
ld a,[hli] ; number of signs
|
|
ld [wNumSigns],a
|
|
and a ; are there any signs?
|
|
jr z,.loadSpriteData ; if not, skip this
|
|
ld c,a
|
|
ld de,wSignTextIDs
|
|
ld a,d
|
|
ld [hSignCoordPointer],a
|
|
ld a,e
|
|
ld [hSignCoordPointer + 1],a
|
|
ld de,wSignCoords
|
|
.signLoop
|
|
ld a,[hli]
|
|
ld [de],a
|
|
inc de
|
|
ld a,[hli]
|
|
ld [de],a
|
|
inc de
|
|
push de
|
|
ld a,[hSignCoordPointer]
|
|
ld d,a
|
|
ld a,[hSignCoordPointer + 1]
|
|
ld e,a
|
|
ld a,[hli]
|
|
ld [de],a
|
|
inc de
|
|
ld a,d
|
|
ld [hSignCoordPointer],a
|
|
ld a,e
|
|
ld [hSignCoordPointer + 1],a
|
|
pop de
|
|
dec c
|
|
jr nz,.signLoop
|
|
.loadSpriteData
|
|
ld a,[wd72e]
|
|
bit 5,a ; did a battle happen immediately before this?
|
|
jp nz,.finishUp ; if so, skip this because battles don't destroy this data
|
|
ld a,[hli]
|
|
ld [wNumSprites],a ; save the number of sprites
|
|
push hl
|
|
; zero C110-C1FF and C210-C2FF
|
|
ld hl,wSpriteStateData1 + $10
|
|
ld de,wSpriteStateData2 + $10
|
|
xor a
|
|
ld b,$f0
|
|
.zeroSpriteDataLoop
|
|
ld [hli],a
|
|
ld [de],a
|
|
inc e
|
|
dec b
|
|
jr nz,.zeroSpriteDataLoop
|
|
; initialize all C100-C1FF sprite entries to disabled (other than player's)
|
|
ld hl,wSpriteStateData1 + $12
|
|
ld de,$0010
|
|
ld c,$0f
|
|
.disableSpriteEntriesLoop
|
|
ld [hl],$ff
|
|
add hl,de
|
|
dec c
|
|
jr nz,.disableSpriteEntriesLoop
|
|
pop hl
|
|
ld de,wSpriteStateData1 + $10
|
|
ld a,[wNumSprites] ; number of sprites
|
|
and a ; are there any sprites?
|
|
jp z,.finishUp ; if there are no sprites, skip the rest
|
|
ld b,a
|
|
ld c,$00
|
|
.loadSpriteLoop
|
|
ld a,[hli]
|
|
ld [de],a ; store picture ID at C1X0
|
|
inc d
|
|
ld a,$04
|
|
add e
|
|
ld e,a
|
|
ld a,[hli]
|
|
ld [de],a ; store Y position at C2X4
|
|
inc e
|
|
ld a,[hli]
|
|
ld [de],a ; store X position at C2X5
|
|
inc e
|
|
ld a,[hli]
|
|
ld [de],a ; store movement byte 1 at C2X6
|
|
ld a,[hli]
|
|
ld [hLoadSpriteTemp1],a ; save movement byte 2
|
|
ld a,[hli]
|
|
ld [hLoadSpriteTemp2],a ; save text ID and flags byte
|
|
push bc
|
|
push hl
|
|
ld b,$00
|
|
ld hl,wMapSpriteData
|
|
add hl,bc
|
|
ld a,[hLoadSpriteTemp1]
|
|
ld [hli],a ; store movement byte 2 in byte 0 of sprite entry
|
|
ld a,[hLoadSpriteTemp2]
|
|
ld [hl],a ; this appears pointless, since the value is overwritten immediately after
|
|
ld a,[hLoadSpriteTemp2]
|
|
ld [hLoadSpriteTemp1],a
|
|
and a,$3f
|
|
ld [hl],a ; store text ID in byte 1 of sprite entry
|
|
pop hl
|
|
ld a,[hLoadSpriteTemp1]
|
|
bit 6,a
|
|
jr nz,.trainerSprite
|
|
bit 7,a
|
|
jr nz,.itemBallSprite
|
|
jr .regularSprite
|
|
.trainerSprite
|
|
ld a,[hli]
|
|
ld [hLoadSpriteTemp1],a ; save trainer class
|
|
ld a,[hli]
|
|
ld [hLoadSpriteTemp2],a ; save trainer number (within class)
|
|
push hl
|
|
ld hl,wMapSpriteExtraData
|
|
add hl,bc
|
|
ld a,[hLoadSpriteTemp1]
|
|
ld [hli],a ; store trainer class in byte 0 of the entry
|
|
ld a,[hLoadSpriteTemp2]
|
|
ld [hl],a ; store trainer number in byte 1 of the entry
|
|
pop hl
|
|
jr .nextSprite
|
|
.itemBallSprite
|
|
ld a,[hli]
|
|
ld [hLoadSpriteTemp1],a ; save item number
|
|
push hl
|
|
ld hl,wMapSpriteExtraData
|
|
add hl,bc
|
|
ld a,[hLoadSpriteTemp1]
|
|
ld [hli],a ; store item number in byte 0 of the entry
|
|
xor a
|
|
ld [hl],a ; zero byte 1, since it is not used
|
|
pop hl
|
|
jr .nextSprite
|
|
.regularSprite
|
|
push hl
|
|
ld hl,wMapSpriteExtraData
|
|
add hl,bc
|
|
; zero both bytes, since regular sprites don't use this extra space
|
|
xor a
|
|
ld [hli],a
|
|
ld [hl],a
|
|
pop hl
|
|
.nextSprite
|
|
pop bc
|
|
dec d
|
|
ld a,$0a
|
|
add e
|
|
ld e,a
|
|
inc c
|
|
inc c
|
|
dec b
|
|
jp nz,.loadSpriteLoop
|
|
.finishUp
|
|
predef LoadTilesetHeader
|
|
callab LoadWildData
|
|
pop hl ; restore hl from before going to the warp/sign/sprite data (this value was saved for seemingly no purpose)
|
|
ld a,[wCurMapHeight] ; map height in 4x4 tile blocks
|
|
add a ; double it
|
|
ld [wCurrentMapHeight2],a ; store map height in 2x2 tile blocks
|
|
ld a,[wCurMapWidth] ; map width in 4x4 tile blocks
|
|
add a ; double it
|
|
ld [wCurrentMapWidth2],a ; map width in 2x2 tile blocks
|
|
ld a,[wCurMap]
|
|
ld c,a
|
|
ld b,$00
|
|
ld a,[H_LOADEDROMBANK]
|
|
push af
|
|
ld a, BANK(MapSongBanks)
|
|
ld [H_LOADEDROMBANK],a
|
|
ld [MBC1RomBank],a
|
|
ld hl, MapSongBanks
|
|
add hl,bc
|
|
add hl,bc
|
|
ld a,[hli]
|
|
ld [wMapMusicSoundID],a ; music 1
|
|
ld a,[hl]
|
|
ld [wMapMusicROMBank],a ; music 2
|
|
pop af
|
|
ld [H_LOADEDROMBANK],a
|
|
ld [MBC1RomBank],a
|
|
ret
|
|
|
|
; function to copy map connection data from ROM to WRAM
|
|
; Input: hl = source, de = destination
|
|
CopyMapConnectionHeader:: ; 1238 (0:1238)
|
|
ld c,$0b
|
|
.loop
|
|
ld a,[hli]
|
|
ld [de],a
|
|
inc de
|
|
dec c
|
|
jr nz,.loop
|
|
ret
|
|
|
|
; function to load map data
|
|
LoadMapData:: ; 1241 (0:1241)
|
|
ld a,[H_LOADEDROMBANK]
|
|
push af
|
|
call DisableLCD
|
|
ld a,$98
|
|
ld [wMapViewVRAMPointer + 1],a
|
|
xor a
|
|
ld [wMapViewVRAMPointer],a
|
|
ld [hSCY],a
|
|
ld [hSCX],a
|
|
ld [wWalkCounter],a
|
|
ld [wUnusedD119],a
|
|
ld [wWalkBikeSurfStateCopy],a
|
|
ld [wSpriteSetID],a
|
|
call LoadTextBoxTilePatterns
|
|
call LoadMapHeader
|
|
callba InitMapSprites ; load tile pattern data for sprites
|
|
call LoadTileBlockMap
|
|
call LoadTilesetTilePatternData
|
|
call LoadCurrentMapView
|
|
; copy current map view to VRAM
|
|
coord hl, 0, 0
|
|
ld de,vBGMap0
|
|
ld b,18
|
|
.vramCopyLoop
|
|
ld c,20
|
|
.vramCopyInnerLoop
|
|
ld a,[hli]
|
|
ld [de],a
|
|
inc e
|
|
dec c
|
|
jr nz,.vramCopyInnerLoop
|
|
ld a,32 - 20
|
|
add e
|
|
ld e,a
|
|
jr nc,.noCarry
|
|
inc d
|
|
.noCarry
|
|
dec b
|
|
jr nz,.vramCopyLoop
|
|
ld a,$01
|
|
ld [wUpdateSpritesEnabled],a
|
|
call EnableLCD
|
|
ld b, SET_PAL_OVERWORLD
|
|
call RunPaletteCommand
|
|
call LoadPlayerSpriteGraphics
|
|
ld a,[wd732]
|
|
and a,1 << 4 | 1 << 3 ; fly warp or dungeon warp
|
|
jr nz,.restoreRomBank
|
|
ld a,[wFlags_D733]
|
|
bit 1,a
|
|
jr nz,.restoreRomBank
|
|
call UpdateMusic6Times
|
|
call PlayDefaultMusicFadeOutCurrent
|
|
.restoreRomBank
|
|
pop af
|
|
ld [H_LOADEDROMBANK],a
|
|
ld [MBC1RomBank],a
|
|
ret
|
|
|
|
; function to switch to the ROM bank that a map is stored in
|
|
; Input: a = map number
|
|
SwitchToMapRomBank:: ; 12bc (0:12bc)
|
|
push hl
|
|
push bc
|
|
ld c,a
|
|
ld b,$00
|
|
ld a,Bank(MapHeaderBanks)
|
|
call BankswitchHome ; switch to ROM bank 3
|
|
ld hl,MapHeaderBanks
|
|
add hl,bc
|
|
ld a,[hl]
|
|
ld [$ffe8],a ; save map ROM bank
|
|
call BankswitchBack
|
|
ld a,[$ffe8]
|
|
ld [H_LOADEDROMBANK],a
|
|
ld [MBC1RomBank],a ; switch to map ROM bank
|
|
pop bc
|
|
pop hl
|
|
ret
|
|
|
|
IgnoreInputForHalfSecond: ; 12da (0:12da)
|
|
ld a, 30
|
|
ld [wIgnoreInputCounter], a
|
|
ld hl, wd730
|
|
ld a, [hl]
|
|
or $26
|
|
ld [hl], a ; set ignore input bit
|
|
ret
|
|
|
|
ResetUsingStrengthOutOfBattleBit: ; 12e7 (0:12e7)
|
|
ld hl, wd728
|
|
res 0, [hl]
|
|
ret
|
|
|
|
ForceBikeOrSurf:: ; 12ed (0:12ed)
|
|
ld b, BANK(RedSprite)
|
|
ld hl, LoadPlayerSpriteGraphics
|
|
call Bankswitch
|
|
jp PlayDefaultMusic ; update map/player state?
|