2020-06-27 19:32:24 +00:00
|
|
|
TryPushingBoulder::
|
2017-01-01 01:23:54 +00:00
|
|
|
ld a, [wd728]
|
|
|
|
|
bit 0, a ; using Strength?
|
|
|
|
|
ret z
|
|
|
|
|
ld a, [wFlags_0xcd60]
|
|
|
|
|
bit 1, a ; has boulder dust animation from previous push played yet?
|
|
|
|
|
ret nz
|
|
|
|
|
xor a
|
|
|
|
|
ld [hSpriteIndexOrTextID], a
|
|
|
|
|
call IsSpriteInFrontOfPlayer
|
|
|
|
|
ld a, [hSpriteIndexOrTextID]
|
|
|
|
|
ld [wBoulderSpriteIndex], a
|
|
|
|
|
and a
|
|
|
|
|
jp z, ResetBoulderPushFlags
|
|
|
|
|
ld hl, wSpriteStateData1 + 1
|
|
|
|
|
ld d, $0
|
|
|
|
|
ld a, [hSpriteIndexOrTextID]
|
|
|
|
|
swap a
|
|
|
|
|
ld e, a
|
|
|
|
|
add hl, de
|
|
|
|
|
res 7, [hl]
|
|
|
|
|
call GetSpriteMovementByte2Pointer
|
|
|
|
|
ld a, [hl]
|
|
|
|
|
cp BOULDER_MOVEMENT_BYTE_2
|
|
|
|
|
jp nz, ResetBoulderPushFlags
|
|
|
|
|
ld hl, wFlags_0xcd60
|
|
|
|
|
bit 6, [hl]
|
|
|
|
|
set 6, [hl] ; indicate that the player has tried pushing
|
|
|
|
|
ret z ; the player must try pushing twice before the boulder will move
|
|
|
|
|
ld a, [hJoyHeld]
|
|
|
|
|
and D_RIGHT | D_LEFT | D_UP | D_DOWN
|
|
|
|
|
ret z
|
|
|
|
|
predef CheckForCollisionWhenPushingBoulder
|
|
|
|
|
ld a, [wTileInFrontOfBoulderAndBoulderCollisionResult]
|
|
|
|
|
and a ; was there a collision?
|
|
|
|
|
jp nz, ResetBoulderPushFlags
|
|
|
|
|
ld a, [hJoyHeld]
|
|
|
|
|
ld b, a
|
|
|
|
|
ld a, [wSpriteStateData1 + 9] ; player's sprite facing direction
|
|
|
|
|
cp SPRITE_FACING_UP
|
|
|
|
|
jr z, .pushBoulderUp
|
|
|
|
|
cp SPRITE_FACING_LEFT
|
|
|
|
|
jr z, .pushBoulderLeft
|
|
|
|
|
cp SPRITE_FACING_RIGHT
|
|
|
|
|
jr z, .pushBoulderRight
|
|
|
|
|
.pushBoulderDown
|
|
|
|
|
bit 7, b
|
|
|
|
|
ret z
|
|
|
|
|
ld de, PushBoulderDownMovementData
|
|
|
|
|
jr .done
|
|
|
|
|
.pushBoulderUp
|
|
|
|
|
bit 6, b
|
|
|
|
|
ret z
|
|
|
|
|
ld de, PushBoulderUpMovementData
|
|
|
|
|
jr .done
|
|
|
|
|
.pushBoulderLeft
|
|
|
|
|
bit 5, b
|
|
|
|
|
ret z
|
|
|
|
|
ld de, PushBoulderLeftMovementData
|
|
|
|
|
jr .done
|
|
|
|
|
.pushBoulderRight
|
|
|
|
|
bit 4, b
|
|
|
|
|
ret z
|
|
|
|
|
ld de, PushBoulderRightMovementData
|
|
|
|
|
.done
|
|
|
|
|
call MoveSprite
|
|
|
|
|
ld a, SFX_PUSH_BOULDER
|
|
|
|
|
call PlaySound
|
|
|
|
|
ld hl, wFlags_0xcd60
|
|
|
|
|
set 1, [hl]
|
|
|
|
|
ret
|
|
|
|
|
|
|
|
|
|
PushBoulderUpMovementData:
|
|
|
|
|
db NPC_MOVEMENT_UP,$FF
|
|
|
|
|
|
|
|
|
|
PushBoulderDownMovementData:
|
|
|
|
|
db NPC_MOVEMENT_DOWN,$FF
|
|
|
|
|
|
|
|
|
|
PushBoulderLeftMovementData:
|
|
|
|
|
db NPC_MOVEMENT_LEFT,$FF
|
|
|
|
|
|
|
|
|
|
PushBoulderRightMovementData:
|
|
|
|
|
db NPC_MOVEMENT_RIGHT,$FF
|
|
|
|
|
|
2020-06-27 19:32:24 +00:00
|
|
|
DoBoulderDustAnimation::
|
2017-01-01 01:23:54 +00:00
|
|
|
ld a, [wd730]
|
|
|
|
|
bit 0, a
|
|
|
|
|
ret nz
|
|
|
|
|
callab AnimateBoulderDust
|
|
|
|
|
call DiscardButtonPresses
|
|
|
|
|
ld [wJoyIgnore], a
|
|
|
|
|
call ResetBoulderPushFlags
|
|
|
|
|
set 7, [hl]
|
|
|
|
|
ld a, [wBoulderSpriteIndex]
|
|
|
|
|
ld [H_SPRITEINDEX], a
|
|
|
|
|
call GetSpriteMovementByte2Pointer
|
|
|
|
|
ld [hl], $10
|
|
|
|
|
ld a, SFX_CUT
|
|
|
|
|
jp PlaySound
|
|
|
|
|
|
|
|
|
|
ResetBoulderPushFlags:
|
|
|
|
|
ld hl, wFlags_0xcd60
|
|
|
|
|
res 1, [hl]
|
|
|
|
|
res 6, [hl]
|
|
|
|
|
ret
|
