uxn/projects/examples/devices/mouse.tal

105 lines
2.6 KiB
Tal

( Mouse:
Paint with 3 colors with each mouse button. )
|00 @System &vector $2 &wst $1 &rst $1 &pad $4 &r $2 &g $2 &b $2 &debug $1 &halt $1
|20 @Screen &vector $2 &width $2 &height $2 &auto $1 &pad $1 &x $2 &y $2 &addr $2 &pixel $1 &sprite $1
|90 @Mouse &vector $2 &x $2 &y $2 &state $1 &pad $3 &modx $2 &mody $2
|0000
@line
&x $2 &y $2 &dx $2 &dy $2 &e1 $2
@pointer
&x $2 &y $2 &lastx $2 &lasty $2 &state $1
|0100 ( -> )
( theme )
#a0f0 .System/r DEO2
#40ff .System/g DEO2
#60ff .System/b DEO2
( vectors )
;on-mouse .Mouse/vector DEO2
BRK
@on-mouse ( -> )
;pointer-icn .Screen/addr DEO2
( clear last cursor )
.pointer/x LDZ2 .Screen/x DEO2
.pointer/y LDZ2 .Screen/y DEO2
#40 .Screen/sprite DEO
( draw new cursor )
.Mouse/x DEI2 DUP2 .pointer/x STZ2 .Screen/x DEO2
.Mouse/y DEI2 DUP2 .pointer/y STZ2 .Screen/y DEO2
#43 .Mouse/state DEI #00 NEQ DUP ADD SUB .Screen/sprite DEO
( on down )
.Mouse/state DEI #00 NEQ .pointer/state LDZ #00 EQU #0101 EQU2 ,on-mouse-down JCN
( on drag )
.Mouse/state DEI ,on-mouse-drag JCN
.Mouse/state DEI .pointer/state STZ
BRK
@on-mouse-down ( -> )
( record start position )
.Mouse/x DEI2 DUP2 .pointer/x STZ2 .pointer/lastx STZ2
.Mouse/y DEI2 DUP2 .pointer/y STZ2 .pointer/lasty STZ2
.Mouse/state DEI .pointer/state STZ
BRK
@on-mouse-drag ( -> )
( draw line )
.pointer/lastx LDZ2
.pointer/lasty LDZ2
.pointer/x LDZ2
.pointer/y LDZ2
.Mouse/state DEI INC
;draw-line JSR2
( record last position )
.Mouse/x DEI2 .pointer/lastx STZ2
.Mouse/y DEI2 .pointer/lasty STZ2
.Mouse/state DEI .pointer/state STZ
BRK
@draw-line ( x1* y1* x2* y2* color -- )
( load ) STH ,&y STR2 ,&x STR2 .line/y STZ2 .line/x STZ2
,&x LDR2 .line/x LDZ2 SUB2 ;abs2 JSR2 .line/dx STZ2
#0000 ,&y LDR2 .line/y LDZ2 SUB2 ;abs2 JSR2 SUB2 .line/dy STZ2
#ffff #00 .line/x LDZ2 ,&x LDR2 ;lts2 JSR2 #10 SFT2 ADD2 ,&sx STR2
#ffff #00 .line/y LDZ2 ,&y LDR2 ;lts2 JSR2 #10 SFT2 ADD2 ,&sy STR2
.line/dx LDZ2 .line/dy LDZ2 ADD2 .line/e1 STZ2
&loop
.line/x LDZ2 DUP2 .Screen/x DEO2 [ LIT2 &x $2 ] EQU2
.line/y LDZ2 DUP2 .Screen/y DEO2 [ LIT2 &y $2 ] EQU2
STHkr .Screen/pixel DEO
AND ,&end JCN
.line/e1 LDZ2 #10 SFT2 DUP2
.line/dy LDZ2 ;lts2 JSR2 ,&skipy JCN
.line/e1 LDZ2 .line/dy LDZ2 ADD2 .line/e1 STZ2
.line/x LDZ2 [ LIT2 &sx $2 ] ADD2 .line/x STZ2
&skipy
.line/dx LDZ2 ;gts2 JSR2 ,&skipx JCN
.line/e1 LDZ2 .line/dx LDZ2 ADD2 .line/e1 STZ2
.line/y LDZ2 [ LIT2 &sy $2 ] ADD2 .line/y STZ2
&skipx
,&loop JMP
&end
POPr
JMP2r
@abs2 DUP2 #0f SFT2 EQU #05 JCN #0000 SWP2 SUB2 JMP2r
@lts2 #8000 STH2k ADD2 SWP2 STH2r ADD2 GTH2 JMP2r
@gts2 #8000 STH2k ADD2 SWP2 STH2r ADD2 LTH2 JMP2r
@pointer-icn 80c0 e0f0 f8e0 1000