(
	wireworld

	A - conductor
	B - tail
	Sel - head
	Start - clear
	mouse1 - paint
	mouse2 - erase

	RULES:
	- electron head<3>, becomes electron tail<2>
	- electron tail<2>, becomes conductor<1>
	- conductor<1>, becomes electron head<3>
		if there are exactly 1 or 2 electron heads around it. )

( 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 &auto $1 &pad $1 &x $2 &y $2 &addr $2 &pixel $1 &sprite $1
|80 @Controller &vector $2 &button $1 &key $1 &func $1
|90 @Mouse &vector $2 &x $2 &y $2 &state $1 &pad $3 &modx $2 &mody $2

|0000

@color $1
@pointer &x $2 &y $2
@timer &frame $1 &play $1

( program )

|0100 ( -> )

	( theme )
	#07fe .System/r DEO2
	#07b6 .System/g DEO2
	#0fc6 .System/b DEO2
	( size )
	#0100 .Screen/width DEO2
	#0100 .Screen/height DEO2
	( vectors )
	;on-frame .Screen/vector DEO2
	;on-mouse .Mouse/vector DEO2
	;on-button .Controller/vector DEO2
	( setup )
	#01 .timer/play STZ
	#01 .color STZ
	( start )
	;world ;get-addr/current STA2
	#1000 ;run/future STA2
	;redraw JSR2

BRK

@on-frame ( -> )

	.timer/play LDZ JMP BRK
	( every 4th )
	.timer/frame LDZk
		#03 AND ,&no-run JCN
			;run JSR2
			&no-run
		LDZk INC SWP STZ

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
	#40 .color LDZ ADD .Screen/sprite DEO
	( paint )
	.Mouse/state DEI ,on-mouse-down JCN

BRK

@on-mouse-down ( -> )

	.Mouse/x DEI2 #03 SFT2 NIP
	.Mouse/y DEI2 #03 SFT2 NIP
	#0202 NEQ2k NIP2 ,&no-color1 JCN
		#01 .color STZ
		#00 .Mouse/state DEO
		POP2 BRK
		&no-color1
	#0302 NEQ2k NIP2 ,&no-color2 JCN
		#02 .color STZ
		#00 .Mouse/state DEO
		POP2 BRK
		&no-color2
	#0402 NEQ2k NIP2 ,&no-color3 JCN
		#03 .color STZ
		#00 .Mouse/state DEO
		POP2 BRK
		&no-color3
	#0602 NEQ2k NIP2 ,&no-toggle JCN
		.timer/play LDZk #00 EQU SWP STZ
		#00 .Mouse/state DEO
		;draw-ui JSR2
		POP2 BRK
		&no-toggle
	POP2

	( color ) .color LDZ .Mouse/state DEI #01 GTH #00 EQU MUL
	( cell* ) .Mouse/x DEI2 #02 SFT2 NIP .Mouse/y DEI2 #02 SFT2 NIP
		;get-addr JSR2 STA
	;redraw JSR2

BRK

@print ( short* -- )

	SWP ,&byte JSR
	&byte ( byte -- ) DUP #04 SFT ,&char JSR
	&char ( char -- ) #0f AND DUP #09 GTH #27 MUL ADD #30 ADD #18 DEO

JMP2r

@on-button ( -> )

	.Controller/button DEI
	[ #01 ] NEQk NIP ,&no-a JCN #01 .color STZ &no-a
	[ #02 ] NEQk NIP ,&no-b JCN #02 .color STZ &no-b
	[ #04 ] NEQk NIP ,&no-select JCN #03 .color STZ &no-select
	[ #08 ] NEQk NIP ,&no-start JCN ;world #2000 ;mclr JSR2 ;redraw JSR2 &no-start
	POP
	( space )
	.Controller/key DEI #20 NEQ ,&no-space JCN .timer/play LDZk #00 EQU SWP STZ &no-space

BRK

@draw-ui ( -- )

	( colors )
	#01 .Screen/auto DEO
	#0010 DUP2 .Screen/x DEO2 .Screen/y DEO2
	;color-icn .Screen/addr DEO2
	#01 .Screen/sprite DEO
	#02 .Screen/sprite DEO
	#03 .Screen/sprite DEO
	( toggle )
	#0030 .Screen/x DEO2
	;toggle-icn #00 .timer/play LDZ #30 SFT2 ADD2 .Screen/addr DEO2
	#01 .Screen/sprite DEO

JMP2r

@redraw ( -- )

	;cell-icn .Screen/addr DEO2
	#4000
	&ver
		#00 OVR #20 SFT2 .Screen/y DEO2
		STHk
		#4000
		&hor
			#00 OVR #20 SFT2 .Screen/x DEO2
			DUP STHkr ,get-addr JSR LDA .Screen/sprite DEO
			INC GTHk ,&hor JCN
		POP2
		POPr
		INC GTHk ,&ver JCN
	POP2
	;draw-ui JSR2

JMP2r

@run ( -- )

	#40 #00
	&ver
		STHk
		#40 #00
		&hor
			( x,y ) DUP STHkr
			( cell ) DUP2 ,get-addr JSR STH2k LDA
			( transform ) ,transform JSR STH2r [ LIT2 &future $2 ] ADD2 STA
			INC GTHk ,&hor JCN
		POP2
		POPr
		INC GTHk ,&ver JCN
	POP2
	( Swap worlds )
	;get-addr/current LDA2k ;run/future LDA2 STH2k ADD2 SWP2 STA2
	#0000 STH2r SUB2 ;run/future STA2
	,redraw JSR

JMP2r

@get-addr ( x y -- addr* )

	#00 SWP #60 SFT2 ROT #00 SWP ADD2 [ LIT2 &current $2 ] ADD2

JMP2r

@transform ( xy cell -- cell )

	DUP ,&no-null JCN NIP NIP JMP2r &no-null
	DUP #03 NEQ ,&no-head JCN POP POP2 #02 JMP2r &no-head
	DUP #02 NEQ ,&no-tail JCN POP POP2 #01 JMP2r &no-tail
	DUP #01 NEQ ,&no-cond JCN POP
		LITr 00
		DUP2 #01 SUB ,get-addr JSR
			( tl ) #0001 SUB2 LDAk #03 NEQ JMP INCr
			( tc ) INC2 LDAk #03 NEQ JMP INCr
			( tr ) INC2 LDA #03 NEQ JMP INCr
		DUP2 ,get-addr JSR
			( ml ) #0001 SUB2 LDAk #03 NEQ JMP INCr
			( mr ) INC2 INC2 LDA #03 NEQ JMP INCr
		INC ,get-addr JSR
			( bl ) #0001 SUB2 LDAk #03 NEQ JMP INCr
			( bc ) INC2 LDAk #03 NEQ JMP INCr
			( br ) INC2 LDA #03 NEQ JMP INCr
		STHkr #02 EQU STHr #01 EQU ORA
		DUP ADD INC JMP2r
		&no-cond
	( unknown )
	NIP NIP

JMP2r

@mclr ( addr* len* -- )

	OVR2 ADD2 SWP2
	&loop
		STH2k #00 STH2r STA
		INC2 GTH2k ,&loop JCN
	POP2 POP2

JMP2r

@pointer-icn
	80c0 e0f0 f8e0 1000
@cell-icn
	e0e0 e000 0000 0000
@color-icn
	7cfe fefe fefe 7c00
@toggle-icn
	( pause ) 6666 6666 6666 6600
	( play ) 4666 767e 7666 4600


(
	I live in the atom with the happy protons and neutrons.
	I'm also so negative all the freakin time.
	What do I do?
	How do I find peace? )

@world