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uxn/projects/examples/dev.mouse.usm
2021-04-09 10:01:53 -07:00

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( Dev/Mouse )
%RTN { JMP2r }
%++ { #0001 ADD2 }
%-- { #0001 SUB2 }
;color { byte 1 }
;pointer { x 2 y 2 }
;circle { xc 2 yc 2 x 2 y 2 r 2 d 2 }
|0100 ;System { vector 2 pad 6 r 2 g 2 b 2 }
|0120 ;Screen { vector 2 width 2 height 2 pad 2 x 2 y 2 addr 2 color 1 }
|0160 ;Mouse { vector 2 x 2 y 2 state 1 chord 1 }
( program )
|0200
( theme ) #03fd =System.r #0ef3 =System.g #0bf2 =System.b
( vectors ) ,on-screen =Screen.vector
( vectors ) ,on-mouse =Mouse.vector
BRK
@on-screen
( clear ) ~circle.xc ~circle.yc ~circle.r #00 ,draw-circle JSR2
( draw ) ~circle.xc ~circle.yc ~circle.r #0001 ADD2 #03 ,draw-circle JSR2
BRK
@on-mouse
,draw-cursor JSR2
( clear ) ~circle.xc ~circle.yc ~circle.r #00 ,draw-circle JSR2
~Mouse.state #00 EQU ^$no-touch JNZ
~Mouse.x DUP2 =circle.xc
~Mouse.y DUP2 =circle.yc
#0000 =circle.r
( release ) #00 =Mouse.state
$no-touch
BRK
@draw-cursor ( -- )
( clear last cursor )
,clear_icn =Screen.addr
~pointer.x =Screen.x
~pointer.y =Screen.y
#30 =Screen.color
( record pointer positions )
~Mouse.x =pointer.x ~Mouse.y =pointer.y
( draw new cursor )
,cursor_icn =Screen.addr
~pointer.x =Screen.x
~pointer.y =Screen.y
#31 ~Mouse.state #00 NEQ ADD =Screen.color
RTN
@draw-circle ( xc yc r color )
( load ) =color =circle.r =circle.yc =circle.xc
#0000 =circle.x ~circle.r =circle.y
~circle.r #0002 MUL2 #0003 SUB2 =circle.d
( draw ) ,$seg JSR2
$loop
( incr ) ~circle.x ++ =circle.x
~circle.d #0000 #0001 ADD2 LTS2 ^$else JNZ
( decr ) ~circle.y -- =circle.y
~circle.x ~circle.y SUB2 #0004 MUL2 ~circle.d ADD2 #000a ADD2 =circle.d
,$end JMP2
$else
~circle.x #0004 MUL2 ~circle.d ADD2 #0006 ADD2 =circle.d
$end
( draw ) ,$seg JSR2
~circle.y ~circle.x #0001 SUB2 GTS2 ^$loop JNZ
RTN
$seg
~circle.xc ~circle.x ADD2 =Screen.x ~circle.yc ~circle.y ADD2 =Screen.y ~color =Screen.color
~circle.xc ~circle.x SUB2 =Screen.x ~circle.yc ~circle.y ADD2 =Screen.y ~color =Screen.color
~circle.xc ~circle.x ADD2 =Screen.x ~circle.yc ~circle.y SUB2 =Screen.y ~color =Screen.color
~circle.xc ~circle.x SUB2 =Screen.x ~circle.yc ~circle.y SUB2 =Screen.y ~color =Screen.color
~circle.xc ~circle.y ADD2 =Screen.x ~circle.yc ~circle.x ADD2 =Screen.y ~color =Screen.color
~circle.xc ~circle.y SUB2 =Screen.x ~circle.yc ~circle.x ADD2 =Screen.y ~color =Screen.color
~circle.xc ~circle.y ADD2 =Screen.x ~circle.yc ~circle.x SUB2 =Screen.y ~color =Screen.color
~circle.xc ~circle.y SUB2 =Screen.x ~circle.yc ~circle.x SUB2 =Screen.y ~color =Screen.color
RTN
@clear_icn [ 0000 0000 0000 0000 ]
@cursor_icn [ 80c0 e0f0 f8e0 1000 ]