92 lines
1.6 KiB
Plaintext
92 lines
1.6 KiB
Plaintext
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app/noodle : illustration program
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)
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%RTN { JMP2r }
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%RTN? { JMP2r? }
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%ABS { DUP #07 SHR #ff SWP MUL? } ( abs )
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%ABS2 { DUP2 #000f SHR2 #ffff SWP2 SWP POP MUL2? } ( abs2 )
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;cursor { x 2 y 2 }
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;a { x 2 y 2 }
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;b { x 2 y 2 }
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;d { x 2 y 2 }
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;s { x 2 y 2 }
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|0100 @RESET
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#0020 #0020 #0090 #0070 ,draw-line JSR2
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BRK
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@FRAME
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,draw-cursor JSR2
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BRK
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@draw-line ( x1 y1 x2 y2 )
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=b.y =b.x ( target, b )
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=a.y =a.x ( target, a )
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( dx = abs[bx - ax] )
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~b.x ~a.x SUB2 ABS2 =d.x
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( dx = abs[bx - ax] )
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~b.y ~a.y SUB2 ABS2 =d.y
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( sx = ax < bx ? 1 : -1; )
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#ffff #00 ~a.x ~b.x GTH2 #0002 MUL2 ADD2 =s.x
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( sy = ay < by ? 1 : -1; )
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#ffff #00 ~a.y ~b.y GTH2 #0002 MUL2 ADD2 =s.y
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#01 =Screen.color
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RTN
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@draw-cursor
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~cursor.x ~Mouse.x NEQU2
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~cursor.y ~Mouse.y NEQU2
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#0000 EQU2 RTN? ( Return if unchanged )
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( clear last cursor )
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~cursor.x =Sprite.x
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~cursor.y =Sprite.y
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,blank_icn =Sprite.addr
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#10 =Sprite.color
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( record cursor positions )
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~Mouse.x =cursor.x
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~Mouse.y =cursor.y
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( draw new cursor )
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~cursor.x =Sprite.x
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~cursor.y =Sprite.y
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,tool_pointer =Sprite.addr
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#12 =Sprite.color
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RTN
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@tool_pointer [ 80c0 e0f0 f8e0 1000 ]
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@tool_hand [ 4040 4070 f8f8 f870 ]
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@tool_eraser [ 2050 b87c 3e1c 0800 ]
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@blank_icn [ 0000 0000 0000 0000 ]
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|F000 @ERROR BRK
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|FF00 ;Console { pad 8 char 1 byte 1 short 2 }
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|FF10 ;Screen { width 2 height 2 pad 4 x 2 y 2 color 1 }
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|FF20 ;Sprite { pad 8 x 2 y 2 addr 2 color 1 }
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|FF30 ;Controller { buttons 1 }
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|FF40 ;Keys { key 1 }
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|FF50 ;Mouse { x 2 y 2 state 1 chord 1 }
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|FF60 ;File { pad 8 name 2 length 2 load 2 save 2 }
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|FFF0 .RESET .FRAME .ERROR ( vectors )
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|FFF8 [ 13fd 1ef3 1bf2 ] ( palette )
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