51 lines
922 B
Tal
51 lines
922 B
Tal
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|00 @System &vector $2 &pad $6 &r $2 &g $2 &b $2
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|10 @Console &vector $2 &read $1 &pad $5 &write $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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|0100
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#23ef .System/r DEO2
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#3b7f .System/g DEO2
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#665f .System/b DEO2
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;draw-tree JSR2
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BRK
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@draw-tree ( -- )
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#0060 .Screen/y DEO2
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( star )
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#0103 ;draw-line JSR2
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#0203 ;draw-line JSR2
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#0103 ;draw-line JSR2
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( tree )
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#8000
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&tree
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DUP #02 SFT #3f AND DUP ADD STH
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DUP #0f AND STHr ADD #01 ;draw-line JSR2
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INC GTHk ,&tree JCN
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POP2
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( bark )
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#1000
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&bark
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#0802 ;draw-line JSR2
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INC GTHk ,&bark JCN
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POP2
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( ground )
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#ff01
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@draw-line ( width color -- )
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,&c STR
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#00 OVR .Screen/width DEI2 #01 SFT2 SWP2 SUB2 ,&o STR2
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#00 SWP DUP2 ADD2 INC2 #0000
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&l
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DUP2 [ LIT2 &o $2 ] ADD2 .Screen/x DEO2
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[ LIT &c $1 ] .Screen/pixel DEO
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INC2 GTH2k ,&l JCN
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POP2 POP2
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.Screen/y DEI2k INC2 ROT DEO2
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JMP2r
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