mirror of https://git.sr.ht/~rabbits/uxn
215 lines
4.2 KiB
Tal
215 lines
4.2 KiB
Tal
( repl
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implemented: hardly anything
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yet to implement: practically everything
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)
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( devices )
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|00 @System &vector $2 &pad $6 &r $2 &g $2 &b $2
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|20 @Screen &vector $2 &width $2 &height $2 &pad $2 &x $2 &y $2 &addr $2 &pixel $1 &sprite $1
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|80 @Controller [ &vector $2 &button $1 &key $1 ]
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|a0 @File &vector $2 &success $2 &offset-hs $2 &offset-ls $2 &name $2 &length $2 &load $2 &save $2
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( init )
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|0100 ( -> )
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@user-program
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;init ;repl/fn STA2
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#2000 JMP2
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&erase-end
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|2000 ( -> )
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&end
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,repl/fn LDR2 JSR2
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BRK
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@repl [ &fn $2 &font-height $1 &font-cells $1 ]
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@buffer [ &cursor $2 &end $2 ]
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@init
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( theme )
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#0fa7 .System/r DEO2
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#0fa7 .System/g DEO2
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#0fa7 .System/b DEO2
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( vectors )
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#2000 .Screen/vector DEO2
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;on-key .Controller/vector DEO2
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( default function )
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;main ,repl/fn STR2
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( buffer )
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;ring-buffer
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DUP2 ,buffer/cursor STR2
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,buffer/end STR2
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( clear out user-program )
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;user-program/erase-end ;user-program
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&clear-loop
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#0000 OVR2 STA2
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#0002 ADD2
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GTH2k ,&clear-loop JCN
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POP2 POP2
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( load font )
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;font ;load-font JMP2 ( tail call )
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@main ( -- )
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JMP2r
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@on-key ( -> )
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.Controller/button DEI #01 AND ,&skip JCN
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.Controller/key DEI
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DUP #e0 AND ,&append JCN
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DUP #08 EQU ,&backspace JCN
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DUP #0d EQU ,&execute JCN
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POP &skip BRK
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&append
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;buffer/cursor LDA2
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STH2k STA
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STH2r INC2 ;ring-buffer ORA2 ;buffer/cursor STA2
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,&draw JMP
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&backspace
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&execute
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DUP EOR
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;buffer/cursor LDA2
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#0001 SUB2 ;ring-buffer ORA2 DUP2 ;buffer/cursor STA2
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STA
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&draw
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#0000 DUP2 .Screen/x DEO2 .Screen/y DEO2
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;ring-buffer ;wrapped-write JSR2
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#00 ;draw-glyph JSR2
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BRK
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@load-font ( filename* -- )
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DUP2 .File/name DEO2
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( find end of string for suffix )
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&loop
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INC2
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LDAk ,&loop JCN
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( suffix is cell size )
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#0001 SUB2 LDAk #0f AND ;repl/font-cells STA
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( search backwards for number )
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&loop2
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#0001 SUB2
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LDAk DUP #2f GTH STH #3a LTH STHr #0101 NEQ2 ,&loop2 JCN
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( parse number to find font height )
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#0001 STH2
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&loop3
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LDAk DUPk #2f GTH STH #3a LTH STHr #0101 NEQ2 ,&end-loop3 JCN
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#30 SUB STHr MULk STH ADDr #0a MUL STH POP
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#0001 SUB2
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,&loop3 JMP
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&end-loop3
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STH2r POP ;repl/font-height STA
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POP
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POP2
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;repl/font-cells LDA DUP MUL #08 MUL INC #00 .File/length DEO2
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;font-data .File/load DEO2
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JMP2r
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@get-word-width ( string* -- string* width* )
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DUP2 LIT2r 0000
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&loop
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LDAk DUP #20 GTH ,¬-end JCN
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POP
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POP2 STH2r
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JMP2r
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¬-end
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#00 SWP ;font-data ADD2 LDA
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LITr 00 STH ADD2r
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INC2
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,&loop JMP
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@wrapped-write ( string* -- )
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LDAk ,¬-end JCN
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POP2
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JMP2r
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¬-end
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,get-word-width JSR .Screen/x DEI2 ADD2 .Screen/width DEI2 LTH2 ,&no-cr JCN
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,cr JSR
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&no-cr
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,write JSR
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,wrapped-write JMP
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@cr ( -- )
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#0000 .Screen/x DEO2
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.Screen/y DEI2 #00 ;repl/font-height LDA ADD2 .Screen/y DEO2
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JMP2r
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@write ( string* -- end-of-string* )
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LDAk DUP ,¬-end JCN
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POP
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JMP2r
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¬-end
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#00 SWP #00 ;repl/font-cells LDA MUL2k MUL2 #0008 MUL2 #0100 ADD2 ( string* char* tile* )
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;font-data ADD2 .Screen/addr DEO2
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#0d ,draw-glyph JSR
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#00 ;repl/font-cells LDA #fff8 MUL2 .Screen/y DEI2 ADD2 .Screen/y DEO2
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;font-data ADD2 LDA #00 SWP .Screen/x DEI2 ADD2 .Screen/x DEO2
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LDAk STH
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INC2
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STHr #20 GTH ;write JCN2
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JMP2r
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@draw-glyph ( color -- )
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STH
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;repl/font-cells LDA
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&outer
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DUP #00 EQU ,&end-outer JCN
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;repl/font-cells LDA
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&inner
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DUP #00 EQU ,&end-inner JCN
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STHkr .Screen/sprite DEO
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#0008 DUP2
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.Screen/x DEI2 ADD2 .Screen/x DEO2
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.Screen/addr DEI2 ADD2 .Screen/addr DEO2
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#01 SUB
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,&inner JMP
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&end-inner
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POP
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#00 ;repl/font-cells LDA #fff8 MUL2 .Screen/x DEI2 ADD2 .Screen/x DEO2
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#0008 .Screen/y DEI2 ADD2 .Screen/y DEO2
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#01 SUB
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,&outer JMP
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&end-outer
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POP
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POPr
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JMP2r
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@body
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4927 6c6c 206d 616b 6520 6120 736f 756e
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6420 7468 6174 2773 2073 6f20 616c 6f6e
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6520 74 6861 7420 6e6f 206f 6e65 2063
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616e 206d 6973 7320 6974 2c20 7468 6174
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2077 686f 6576 6572 20 6865 6172 7320
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6974 2077 696c 6c20 7765 6570 2069 6e20
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7468 6569 7220 736f 756c 732c 20 616e
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6420 6865 6172 7468 7320 7769 6c6c 2073
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6565 6d20 7761 726d 6572 2c20 61 6e64
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2062 6569 6e67 2069 6e73 6964 6520 7769
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6c6c 2073 6565 6d20 6265 7474 6572 20
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746f 2061 6c6c 2077 686f 2068 6561 7220
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6974 2069 6e20 7468 6520 6469 7374 616e
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7420 746f 776e 732e 20 $1
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@font
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"projects/fonts/venice14.uf2 $1
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@font-data
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|fe00 @ring-buffer
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