80 lines
1.9 KiB
Tal
80 lines
1.9 KiB
Tal
|00 @System &vector $2 &expansion $2 &wst $1 &rst $1 &metadata $2 &r $2 &g $2 &b $2 &debug $1 &state $1
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|10 @Console &vector $2 &read $1 &pad $4 &type $1 &write $1 &error $1
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|20 @Screen &vector $2 &width $2 &height $2 &auto $1 &pad $1 &x $2 &y $2 &addr $2 &pixel $1 &sprite $1
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|58 @canvas-width
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|1f @canvas-height
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(to run gui: `./run_ui.sh one_line_canvas.tal`)
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(to run debugger: `../uxn/bin/uxnasm one_line_canvas.tal one_line_canvas.rom && ../uxn/bin/uxnemu ../beetbug.rom ./one_line_canvas.rom`)
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%dbug { #01 .System/debug DEO }
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%PX { #01 .Screen/pixel DEO }
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|0100
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@on-reset
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setup-gui
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#58 #58 #1f draw-h-line
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#58 #58 #1f #02 MUL draw-h-line
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#1f #58 #1f draw-v-line
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#1f #02 #58 MUL #1f draw-v-line
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BRK
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@draw-v-line ( l x y )
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SWP ( l y x )
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#00 ( l y x 00 )
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SWP .Screen/x DEO2 ( l y )
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( store vars )
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!{ &y $1 &l $1 }
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,/y STR ,/l STR
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&loop
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( set y )
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,/y LDR DUP ( y y )
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#00 SWP ( y 00 y)
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.Screen/y DEO2 ( y )
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( draw pixel )
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PX
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( incrment y )
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INC ( y+1 )
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,/y STR ( )
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( decrement l )
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,/l LDR #01 ( l 01 )
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SUB ( l-1 )
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,/l STRk POP ( l )
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#00 NEQ ?&loop
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JMP2r
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@draw-h-line ( l x y )
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#00 ( l x y 00 )
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SWP .Screen/y DEO2 ( l x )
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( store vars )
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!{ &x $1 &l $1 }
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,/x STR ,/l STR
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&loop
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( set x )
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,/x LDR DUP ( x x )
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#00 SWP ( x 00 x)
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.Screen/x DEO2 ( x )
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( draw pixel )
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PX
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( incrment x )
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INC ( x+1 )
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,/x STR ( )
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( decrement l )
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,/l LDR #01 ( l 01 )
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SUB ( l-1 )
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,/l STRk POP ( l )
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#00 NEQ ?&loop
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JMP2r
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@setup-gui ( -- )
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(set screen height and width the 3x canvas size)
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LIT2 =canvas-width #0003 MUL2 .Screen/width DEO2
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LIT2 =canvas-height #0003 MUL2 .Screen/height DEO2
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(set basic color scheme)
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#f07f .System/r DEO2
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#f0d6 .System/g DEO2
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#f0b2 .System/b DEO2
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JMP2r
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