uxn/examples/images.usm

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( drag )
:dev/r fff8 ( std read port )
:dev/w fff9 ( std write port )
&Point { x 1 y 1 }
&Point2d { x 2 y 2 }
&Picture2d { x 2 y 2 width 1 height 1 color 1 addr 2 }
;pict Picture2d ;pictpt Point
|0100 @RESET
#05 =dev/r ( set dev/read mouse )
#02 =dev/w ( set dev/write to sprite )
#0030 #0042 #04 #04 #01 ,graphic ,draw-picture JSR
#0040 #0052 #04 #04 #02 ,graphic ,draw-picture JSR
#0050 #0062 #04 #04 #03 ,graphic ,draw-picture JSR
#0058 #0042 #04 #04 #05 ,graphic ,draw-picture JSR
#0068 #0052 #04 #04 #06 ,graphic ,draw-picture JSR
#0078 #0062 #04 #04 #07 ,graphic ,draw-picture JSR
#0080 #0042 #04 #04 #0a ,graphic ,draw-picture JSR
#0090 #0052 #04 #04 #0c ,graphic ,draw-picture JSR
#00a0 #0062 #04 #04 #0e ,graphic ,draw-picture JSR
BRK
@draw-picture ( x y width height addr -> picture )
=pict.addr =pict.color =pict.height =pict.width =pict.y =pict.x
#00 =pictpt.y
@draw-picture-row
#00 =pictpt.x
@draw-picture-col
( draw )
~pict.color
~pict.addr
#0008 #00 ~pictpt.x MUL2 ADD2 ( x )
#0008 #00 ~pictpt.y ~pict.width MUL MUL2 ADD2 ( y * width )
~pict.x #0008 #00 ~pictpt.x MUL2 ADD2
~pict.y #0008 #00 ~pictpt.y MUL2 ADD2
,draw-sprite JSR
( draw - end )
( incr x ) ~pictpt.x #01 ADD =pictpt.x
~pictpt.x ~pict.width LTH ,draw-picture-col ROT JMP? POP2
( incr y ) ~pictpt.y #01 ADD =pictpt.y
~pictpt.y ~pict.height LTH ,draw-picture-row ROT JMP? POP2
RTS
@draw-sprite
IOW2 ( y byte )
IOW2 ( x byte )
IOW2 ( sprite address )
IOW ( layer-color )
RTS
@clear_icn [ 0000 0000 0000 0000 ]
@cursor_icn [ 80c0 e0f0 f8e0 1000 ]
@graphic [
ff80 8080 8080 8088
ffff fffc f8f9 f1f4
ffff 0010 c721 2120
ffff 3f0f 0717 c343
8888 8080 8080 8080
f0f1 f2f5 f2f1 f0f4
1208 804c 9212 4c00
7303 0343 1b1b fbfb
8080 8f83 8383 8393
f0f3 f1f0 e4c0 80ff
00c7 c7c6 4606 00ff
c3d3 c307 870f 3fff
8f83 8383 8383 83ff
fff7 fdff c0e2 f1ff
7fef bfff 07af 5fff
ffff ffff ffff ffff
]
|c000 @FRAME BRK
|d000 @ERROR BRK
|FFF0 [ f0ac f0bb f053 ] ( palette )
|FFFA .RESET .FRAME .ERROR ( vectors )