mirror of
https://github.com/alpine9000/amiga_examples
synced 2025-12-08 14:59:01 +00:00
269 lines
4.7 KiB
ArmAsm
269 lines
4.7 KiB
ArmAsm
include "includes.i"
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xdef UpdatePig
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xdef ProcessJoystick
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xdef InitialisePig
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xdef HidePig
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xdef SetupSpriteData
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xdef ScrollSprites
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xdef deadSprite
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xdef spriteX
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xdef spriteLagX
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xdef spriteY
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xdef UpdatePigFallingAnimation
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InitialisePig:
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move.w #0,spritePigFallingAnimation
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move.w #PIG_INITIAL_X,spriteX
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move.w #PIG_INITIAL_Y,spriteY
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move.w #PIG_INITIAL_Y+16,spriteYEnd
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rts
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HidePig:
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move.w #$f000,spriteX
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rts
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ScrollSprites:
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sub.w #1,spriteX
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bra ScrollItemSprites
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rts
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UpdatePigFallingAnimation:
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move.w spritePigFallingAnimation,d0
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lsr.w #1,d0
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mulu.w #PIG_SPRITE_VERTICAL_BYTES,d0
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move.l #spriteFalling1,a0
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add.l d0,a0
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move.l a0,currentSprite
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add.w #1,spritePigFallingAnimation
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cmp.w #4<<1,spritePigFallingAnimation
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blt .dontResetAnimation
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move.w #0,spritePigFallingAnimation
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bsr HidePig
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.dontResetAnimation:
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rts
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UpdatePig:
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;; right
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cmp.w #PIG_PAUSE_PIXELS,spriteR
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ble .skipRight
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add.w #PIG_MOVE_PIXELS,spriteX
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move.l #spritePigRightJump,currentSprite
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.skipRight
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cmp.w #0,spriteR
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beq .notRight
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sub.w #1,spriteR
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cmp.w #PIG_PAUSE_PIXELS,spriteR
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bge .notRight
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move.l #spritePigRight,currentSprite
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.notRight:
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;; up
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cmp.w #PIG_PAUSE_PIXELS,spriteU
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ble .skipUp
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sub.w #PIG_MOVE_PIXELS,spriteY
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sub.w #PIG_MOVE_PIXELS,spriteYEnd
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move.l #spritePigUpJump,currentSprite
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.skipUp:
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cmp.w #0,spriteU
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beq .notUp
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sub.w #1,spriteU
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cmp.w #PIG_PAUSE_PIXELS,spriteU
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bge .notUp
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move.l #spritePigUp,currentSprite
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.notUp:
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;; down
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cmp.w #PIG_PAUSE_PIXELS,spriteD
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ble .skipDown
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add.w #PIG_MOVE_PIXELS,spriteY
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add.w #PIG_MOVE_PIXELS,spriteYEnd
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move.l #spritePigDownJump,currentSprite
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.skipDown:
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cmp.w #0,spriteD
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beq .notDown
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sub.w #1,spriteD
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cmp.w #PIG_PAUSE_PIXELS,spriteD
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bge .notDown
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move.l #spritePigDown,currentSprite
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.notDown:
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;; left
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cmp.w #PIG_PAUSE_PIXELS,spriteL
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ble .skipLeft
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sub.w #PIG_MOVE_PIXELS,spriteX
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move.l #spritePigLeftJump,currentSprite
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.skipLeft
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cmp.w #0,spriteL
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beq .notLeft
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sub.w #1,spriteL
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cmp.w #PIG_PAUSE_PIXELS,spriteL
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bge .notLeft
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move.l #spritePigLeft,currentSprite
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.notLeft:
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cmp.w #$cf,spriteX
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blt .noScroll
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move.w #1,moving
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.noScroll:
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rts
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ProcessJoystick:
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;; 812
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;; 7 3
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;; 654
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jsr ReadJoystick
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cmp.w #0,spriteR
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bne .skip
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cmp.w #0,spriteU
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bne .skip
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cmp.w #0,spriteD
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bne .skip
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cmp.w #0,spriteL
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bne .skip
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cmp.b #3,joystickpos
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bne .notRight
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move.w #PIG_JUMP_PIXELS+PIG_PAUSE_PIXELS,spriteR
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move.l #spritePigRight,currentSprite
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.notRight:
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cmp.b #1,joystickpos
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bne .notUp
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move.w #PIG_JUMP_PIXELS+PIG_PAUSE_PIXELS,spriteU
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move.l #spritePigUp,currentSprite
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.notUp:
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cmp.b #5,joystickpos
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bne .notDown
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move.w #PIG_JUMP_PIXELS+PIG_PAUSE_PIXELS,spriteD
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move.l #spritePigDown,currentSprite
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.notDown:
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cmp.b #7,joystickpos
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bne .notLeft
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move.w #PIG_JUMP_PIXELS+PIG_PAUSE_PIXELS,spriteL
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move.l #spritePigLeft,currentSprite
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.notLeft:
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.skip:
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rts
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SetupSpriteData:
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move.l currentSprite,a0
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move.w spriteLagX,d0
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move.w spriteX,spriteLagX
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move.w d0,d1
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andi #1,d1
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move.b d1,3(a0) ;spriteControl
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lsr.l #1,d0
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move.b d0,1(a0) ;spriteHStart
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move.w spriteY,d0
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move.b d0,(a0) ;spriteVStart
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move.w spriteYEnd,d0
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move.b d0,2(a0) ;spriteVStop
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move.l a0,SPR0PTH(a6)
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move.l #ITEM_NUM_SLOTS-1,d0
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.loop:
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jsr SetupItemSpriteData
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dbra d0,.loop
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move.l #deadSprite,SPR1PTH(a6)
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move.l #deadSprite,SPR3PTH(a6)
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move.l #deadSprite,SPR4PTH(a6)
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move.l #deadSprite,SPR5PTH(a6)
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move.l #deadSprite,SPR6PTH(a6)
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move.l #deadSprite,SPR7PTH(a6)
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rts
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spritePigUp:
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dc.w 0,0
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dc.w 0,0
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incbin "out/sprite_pig-1.bin" ; up
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dc.l 0
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spritePigUpJump:
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dc.w 0,0
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dc.w 0,0
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incbin "out/sprite_pig-0.bin" ; up jump
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dc.l 0
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spritePigDown:
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dc.w 0,0
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dc.w 0,0
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incbin "out/sprite_pig-5.bin" ; down
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dc.l 0
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spritePigDownJump:
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dc.w 0,0
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dc.w 0,0
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incbin "out/sprite_pig-4.bin" ; down jump
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dc.l 0
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spritePigLeft:
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dc.w 0,0
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dc.w 0,0
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incbin "out/sprite_pig-7.bin" ; left
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dc.l 0
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spritePigLeftJump:
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dc.w 0,0
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dc.w 0,0
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incbin "out/sprite_pig-6.bin" ; left jump
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dc.l 0
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spritePigRight:
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dc.w 0,0
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dc.w 0,0
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incbin "out/sprite_pig-3.bin" ; right
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dc.l 0
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spritePigRightJump:
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dc.w 0,0
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dc.w 0,0
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incbin "out/sprite_pig-2.bin" ; right jump
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dc.l 0
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spriteFalling0:
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dc.w 0,0
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dc.w 0,0
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incbin "out/sprite_fallingPig-0.bin"
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dc.l 0
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spriteFalling1:
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dc.w 0,0
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dc.w 0,0
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incbin "out/sprite_fallingPig-1.bin"
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dc.l 0
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spriteFalling2:
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dc.w 0,0
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dc.w 0,0
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incbin "out/sprite_fallingPig-2.bin"
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dc.l 0
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spriteFalling3:
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dc.w 0,0
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dc.w 0,0
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incbin "out/sprite_fallingPig-3.bin"
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dc.l 0
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spriteFalling4:
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dc.w 0,0
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dc.w 0,0
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incbin "out/sprite_fallingPig-4.bin"
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dc.l 0
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spritePigFallingAnimation:
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dc.w 0
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currentSpriteOffset:
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dc.l 0
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currentSprite:
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dc.l spritePigRight
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deadSprite:
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dc.l 0
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spriteR:
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dc.w 0
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spriteL:
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dc.w 0
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spriteU:
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dc.w 0
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spriteD:
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dc.w 0
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spriteLagX:
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dc.w 0
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spriteX:
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dc.w $0
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spriteY:
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dc.w $e4
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spriteYEnd:
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dc.w $f5 |