59 lines
1.0 KiB
Plaintext
59 lines
1.0 KiB
Plaintext
( sprite )
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:dev/r fff8 ( std read port )
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:dev/w fff9 ( std write port )
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;mousex 2 ;mousey 2 ;lastx 2 ;lasty 2 ;color 1
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|0100 @RESET
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#05 =dev/r ( set dev/read mouse )
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#02 =dev/w ( set dev/write to sprite )
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#00 ,rounds_chr #0004 #0004 ,drawsprite JSR
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BRK
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|c000 @FRAME
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#02 =dev/w ( set dev/write to sprite )
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( clear last cursor )
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#10 ,clear_icn ~lastx ~lasty ,drawsprite JSR
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( record mouse values )
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#00 IOR2 =mousex #02 IOR2 =mousey
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#04 IOR #11 ADD =color
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~color ,cursor_icn ~mousex ~mousey ,drawsprite JSR
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( check paint )
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#04 IOR #00 EQU ,skip ROT JMP? POP2
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#05 ,brush_large ~mousex #0004 SUB2 ~mousey #0004 SUB2 ,drawsprite JSR
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@skip
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~mousex =lastx ~mousey =lasty
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BRK
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@drawsprite
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IOW2 ( y byte )
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IOW2 ( x byte )
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IOW2 ( sprite address )
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IOW ( layer-color )
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RTS
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|0200 @SPRITESHEET
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@rounds_chr [ 3844 92aa 9244 3800 0038 7c7c 7c38 0000 ]
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@cursor_icn [ 80c0 e0f0 f8e0 1000 ]
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@clear_icn [ 0000 0000 0000 0000 ]
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@brush_large [ 387c fefe fe7c 3800 ]
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@brush_small [ 0038 7c7c 7c38 0000 ]
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BRK
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|d000 @ERROR BRK
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|FFFA .RESET .FRAME .ERROR
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