uxn/projects/examples/devices/mouse.tal

121 lines
2.9 KiB
Tal

( dev/mouse )
%RTN { JMP2r }
%ABS2 { DUP2 #0f SFT2 EQU #05 JCN #0000 SWP2 SUB2 }
%LTS2 { #8000 ADD2 SWP2 #8000 ADD2 GTH2 }
%GTS2 { #8000 ADD2 SWP2 #8000 ADD2 LTH2 }
%2** { #10 SFT2 }
( devices )
|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 &pad $2 &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
@color $1
@line
&x0 $2 &y0 $2 &x $2 &y $2 &sx $2 &sy $2 &dx $2 &dy $2 &e1 $2 &e2 $2
@pointer
&x $2 &y $2 &lastx $2 &lasty $2 &state $1
( program )
|0100 ( -> )
( theme )
#f030 .System/r DEO2
#f04f .System/g DEO2
#f050 .System/b DEO2
( vectors )
;on-mouse .Mouse/vector DEO2
BRK
@on-mouse ( -> )
;draw-cursor JSR2
( 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
#01 [ .Mouse/state DEI #10 EQU DUP ADD ADD ]
;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-cursor ( -- )
;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
RTN
@draw-line ( x1 y1 x2 y2 color -- )
( load ) .color STZ .line/y0 STZ2 .line/x0 STZ2 .line/y STZ2 .line/x STZ2
.line/x0 LDZ2 .line/x LDZ2 SUB2 ABS2 .line/dx STZ2
.line/y0 LDZ2 .line/y LDZ2 SUB2 ABS2 #0000 SWP2 SUB2 .line/dy STZ2
#ffff #00 .line/x LDZ2 .line/x0 LDZ2 LTS2 2** ADD2 .line/sx STZ2
#ffff #00 .line/y LDZ2 .line/y0 LDZ2 LTS2 2** ADD2 .line/sy STZ2
.line/dx LDZ2 .line/dy LDZ2 ADD2 .line/e1 STZ2
&loop
.line/x LDZ2 .Screen/x DEO2
.line/y LDZ2 .Screen/y DEO2
.color LDZ .Screen/pixel DEO
[ .line/x LDZ2 .line/x0 LDZ2 EQU2 ]
[ .line/y LDZ2 .line/y0 LDZ2 EQU2 ] #0101 EQU2 ,&end JCN
.line/e1 LDZ2 2** .line/e2 STZ2
.line/e2 LDZ2 .line/dy LDZ2 LTS2 ,&skipy JCN
.line/e1 LDZ2 .line/dy LDZ2 ADD2 .line/e1 STZ2
.line/x LDZ2 .line/sx LDZ2 ADD2 .line/x STZ2
&skipy
.line/e2 LDZ2 .line/dx LDZ2 GTS2 ,&skipx JCN
.line/e1 LDZ2 .line/dx LDZ2 ADD2 .line/e1 STZ2
.line/y LDZ2 .line/sy LDZ2 ADD2 .line/y STZ2
&skipx
;&loop JMP2
&end
RTN
@pointer-icn 80c0 e0f0 f8e0 1000