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https://frontier.innolan.net/github/AmigaExamples.git
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159 lines
2.6 KiB
ArmAsm
159 lines
2.6 KiB
ArmAsm
include "includes.i"
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xdef SetupItemSpriteData
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xdef ScrollItemSprites
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xdef RenderItemSprite
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ScrollItemSprites:
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;; sub.w #1,itemX
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move.l foregroundScrollPixels,d0
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sub.w d0,itemX
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rts
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SetupItemSpriteData:
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move.l currentItemSprite,a0
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cmp.w #13<<3,itemIndex
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ble .dontResetIndex
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move.l #0,itemIndex
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.dontResetIndex:
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cmp.l #deadSprite,a0
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bne .setupSprite
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bra .c1
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.setupSprite:
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move.l #0,d0
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move.w itemIndex,d0
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lsr.l #3,d0
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mulu.w #64+12,d0
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add.l d0,a0
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move.w itemLagX,d0
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lsr.w #FOREGROUND_SCROLL_SHIFT_CONVERT,d0 ; convert to pixels
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move.w itemX,itemLagX
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add.w #32,d0
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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 itemLagY,d0
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move.w itemY,itemLagY
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move.b d0,(a0) ;spriteVStart
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move.w itemLagYEnd,d0
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move.w itemYEnd,itemLagYEnd
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move.b d0,2(a0) ;spriteVStop
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.c1:
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move.l a0,SPR2PTH(a6)
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add.w #1,itemIndex
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rts
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RenderItemSprite:
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;; d2 - y tile index ?
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movem.l d2-d3,-(sp)
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move.l foregroundScrollX,d0
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lsr.w #FOREGROUND_SCROLL_SHIFT_CONVERT,d0 ; convert to pixels
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andi.w #$f,d0
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cmp.b #$f,d0
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bne .dontAddSprite
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move.l a2,a3
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add.l mapSize,a3
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cmpi.w #0,(a3)
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beq .dontAddSprite
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move.l #deadSprite,currentItemSprite
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move.w #337<<FOREGROUND_SCROLL_SHIFT_CONVERT,itemX
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mulu.w #16,d2
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move.w #255-12,d3
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sub.w d2,d3
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move.w d3,itemY
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add.w #16,d3
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move.w d3,itemYEnd
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;; move.w #0,itemIndex
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move.l #spriteCoin1,currentItemSprite
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.dontAddSprite:
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movem.l (sp)+,d2-d3
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rts
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currentItemSprite:
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dc.l deadSprite
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itemX:
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dc.w 0
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itemLagX:
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dc.w 0
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itemY:
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dc.w 0
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itemLagY:
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dc.w 0
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itemYEnd:
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dc.w 0
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itemLagYEnd:
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dc.w 0
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itemIndex:
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dc.w 0
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spriteCoin1:
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dc.w 0,0
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dc.w 0,0
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incbin "out/sprite_coin1.bin"
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dc.l 0
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dc.w 0,0
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dc.w 0,0
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incbin "out/sprite_coin1.bin"
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dc.l 0
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spriteCoin2:
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dc.w 0,0
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dc.w 0,0
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incbin "out/sprite_coin2.bin"
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dc.l 0
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spriteCoin3:
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dc.w 0,0
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dc.w 0,0
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incbin "out/sprite_coin3.bin"
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dc.l 0
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spriteCoin4:
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dc.w 0,0
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dc.w 0,0
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incbin "out/sprite_coin4.bin"
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dc.l 0
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spriteCoin5:
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dc.w 0,0
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dc.w 0,0
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incbin "out/sprite_coin3.bin"
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dc.l 0
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spriteCoin6:
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dc.w 0,0
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dc.w 0,0
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incbin "out/sprite_coin6.bin"
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dc.l 0
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spriteCoin7:
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dc.w 0,0
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dc.w 0,0
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incbin "out/sprite_coin7.bin"
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dc.l 0
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dc.w 0,0
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dc.w 0,0
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incbin "out/sprite_coin7.bin"
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dc.l 0
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spriteCoin8:
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dc.w 0,0
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dc.w 0,0
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incbin "out/sprite_coin6.bin"
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dc.l 0
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spriteCoin9:
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dc.w 0,0
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dc.w 0,0
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incbin "out/sprite_coin3.bin"
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dc.l 0
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spriteCoin10:
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dc.w 0,0
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dc.w 0,0
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incbin "out/sprite_coin4.bin"
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dc.l 0
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spriteCoin11:
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dc.w 0,0
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dc.w 0,0
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incbin "out/sprite_coin3.bin"
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dc.l 0
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spriteCoin12:
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dc.w 0,0
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dc.w 0,0
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incbin "out/sprite_coin2.bin"
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dc.l 0
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