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uxn/projects/examples/devices/mouse.usm
2021-04-26 20:16:41 +01:00

115 lines
2.9 KiB
Text

( dev/mouse )
%RTN { JMP2r }
%ABS2 { DUP2 #000f SFT2 EQU #04 JNZ #ffff MUL2 }.
( devices )
|00 @System [ &vector $2 &pad $6 &r $2 &g $2 &b $2 ]
|20 @Screen [ &vector $2 &width $2 &height $2 &pad $2 &x $2 &y $2 &addr $2 &color $1 ]
|90 @Mouse [ &vector $2 &x $2 &y $2 &state $1 &chord $1 ]
|0000
@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 ]
@color $1
( program )
|0100 ( -> )
( theme )
#f0f0 .System/r DEO2
#f00f .System/g DEO2
#f000 .System/b DEO2
( vectors )
;on-mouse .Mouse/vector DEO2
BRK
@on-mouse ( -> )
;draw-cursor JSR2
( on down )
.Mouse/state DEI #00 NEQ .pointer/state PEK #00 EQU #0101 EQU2 ,on-mouse-down JNZ
( on drag )
.Mouse/state DEI #00 NEQ ,on-mouse-drag JNZ
.Mouse/state DEI .pointer/state POK
BRK
@on-mouse-down ( -> )
( record start position )
.Mouse/x DEI2 DUP2 .pointer/x POK2 .pointer/lastx POK2
.Mouse/y DEI2 DUP2 .pointer/y POK2 .pointer/lasty POK2
.Mouse/state DEI .pointer/state POK
BRK
@on-mouse-drag ( -> )
( draw line )
.pointer/lastx PEK2
.pointer/lasty PEK2
.pointer/x PEK2
.pointer/y PEK2
#01 [ .Mouse/state DEI #10 EQU #02 MUL ADD ]
;draw-line JSR2
( record last position )
.Mouse/x DEI2 .pointer/lastx POK2
.Mouse/y DEI2 .pointer/lasty POK2
.Mouse/state DEI .pointer/state POK
BRK
@draw-cursor ( -- )
( clear last cursor )
;clear .Screen/addr DEO2
.pointer/x PEK2 .Screen/x DEO2
.pointer/y PEK2 .Screen/y DEO2
#30 .Screen/color DEO
( record pointer positions )
.Mouse/x DEI2 .pointer/x POK2
.Mouse/y DEI2 .pointer/y POK2
( draw new cursor )
;cursor .Screen/addr DEO2
.pointer/x PEK2 .Screen/x DEO2
.pointer/y PEK2 .Screen/y DEO2
( colorize on state )
#31 [ .Mouse/state DEI #00 NEQ ] ADD .Screen/color DEO
RTN
@draw-line ( x1 y1 x2 y2 color -- )
( load ) .color POK .line/y0 POK2 .line/x0 POK2 .line/y POK2 .line/x POK2
.line/x0 PEK2 .line/x PEK2 SUB2 ABS2 .line/dx POK2
.line/y0 PEK2 .line/y PEK2 SUB2 ABS2 #0000 SWP2 SUB2 .line/dy POK2
#ffff #00 .line/x PEK2 .line/x0 PEK2 LTS2 #0002 MUL2 ADD2 .line/sx POK2
#ffff #00 .line/y PEK2 .line/y0 PEK2 LTS2 #0002 MUL2 ADD2 .line/sy POK2
.line/dx PEK2 .line/dy PEK2 ADD2 .line/e1 POK2
&loop
( draw )
.line/x PEK2 .Screen/x DEO2
.line/y PEK2 .Screen/y DEO2
.color PEK .Screen/color DEO
.line/x PEK2 .line/x0 PEK2 EQU2 .line/y PEK2 .line/y0 PEK2 EQU2 #0101 EQU2 ,&end JNZ
.line/e1 PEK2 #0002 MUL2 .line/e2 POK2
.line/e2 PEK2 .line/dy PEK2 LTS2 ,&skipy JNZ
.line/e1 PEK2 .line/dy PEK2 ADD2 .line/e1 POK2
.line/x PEK2 .line/sx PEK2 ADD2 .line/x POK2
&skipy
.line/e2 PEK2 .line/dx PEK2 GTS2 ,&skipx JNZ
.line/e1 PEK2 .line/dx PEK2 ADD2 .line/e1 POK2
.line/y PEK2 .line/sy PEK2 ADD2 .line/y POK2
&skipx
,&loop JMP
&end
RTN
@clear [ 0000 0000 0000 0000 ]
@cursor [ 80c0 e0f0 f8e0 1000 ]