uxn/projects/examples/dev.time.usm

( Dev/Time )

%RTN { JMP2r }
%ABS2 { DUP2 #000f SFT2 EQU #04 JNZ #ffff MUL2 }
%SCALEX { #0002 DIV2 ~Screen.width #0002 DIV2 ADD2 #0040 SUB2 }
%SCALEY { #0002 DIV2 ~Screen.height #0002 DIV2 ADD2 #0040 SUB2 }
%12HOURS { DUP #0c GTH #0c MUL SUB }
%MOD { DUP2 DIV MUL SUB }

;current { second 1 }
;needles { hx 2 hy 2 mx 2 my 2 sx 2 sy 2 }
;line { x0 2 y0 2 x 2 y 2 sx 2 sy 2 dx 2 dy 2 e1 2 e2 2 }
;color { byte 1 }

( devices )

|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 }
|01a0 ;DateTime { year 2 month 1 day 1 hour 1 minute 1 second 1 dotw 1 doty 2 isdst 1 refresh 1 }

( program )

|0200
	
	( theme ) #0ff8 =System.r #0f08 =System.g #0f08 =System.b
	( vectors ) ,on-frame =Screen.vector

BRK

@on-frame
	
	#00 =DateTime.refresh

	( only draw once per second )
	~DateTime.second ~current.second NEQ #01 JNZ BRK
	~DateTime.second =current.second

	( clear )
	#0080 SCALEX #0080 SCALEY ~needles.sx ~needles.sy #00 ,draw-line JSR2
	#0080 SCALEX #0080 SCALEY ~needles.mx ~needles.my #00 ,draw-line JSR2
	#0080 SCALEX #0080 SCALEY ~needles.hx ~needles.hy #00 ,draw-line JSR2

	( place )
	#00 ~DateTime.second #0002 MUL2 ,table ADD2 LDR2
		#00 SWP SCALEY =needles.sy 
		#00 SWP SCALEX =needles.sx
	#00 ~DateTime.minute #0002 MUL2 ,table ADD2 LDR2
		#00 SWP #0004 DIV2 #0003 MUL2 #0020 ADD2 SCALEY =needles.my 
		#00 SWP #0004 DIV2 #0003 MUL2 #0020 ADD2 SCALEX =needles.mx
	#00 ~DateTime.hour 12HOURS #05 MUL #0002 MUL2 ,table ADD2 LDR2
		#00 SWP #0002 DIV2 #0040 ADD2 SCALEY =needles.hy 
		#00 SWP #0002 DIV2 #0040 ADD2 SCALEX =needles.hx

	( needles )
	#0080 SCALEX #0080 SCALEY ~needles.sx ~needles.sy #02 ,draw-line JSR2
	#0080 SCALEX #0080 SCALEY ~needles.mx ~needles.my #01 ,draw-line JSR2
	#0080 SCALEX #0080 SCALEY ~needles.hx ~needles.hy #03 ,draw-line JSR2

	( circle )
	#00 #3c 
	$loop
		( load ) OVR #00 SWP #0002 MUL2 ,table ADD2 LDR2 
		#00 SWP SCALEY =Screen.y
		#00 SWP SCALEX =Screen.x
		OVR #0f MOD #00 EQU #01 ADD =Screen.color
		( incr ) SWP #01 ADD SWP
		DUP2 LTH ^$loop JNZ
	POP2

	( display )
	~Screen.height #0002 DIV2 #0048 ADD2 =Screen.y
	~Screen.width #0002 DIV2
	DUP2 #0020 SUB2 =Screen.x 
		,font_hex #00 ~DateTime.hour #0a DIV #08 MUL ADD2 =Screen.addr 
		#22 =Screen.color
	DUP2 #0018 SUB2 =Screen.x 
		,font_hex #00 ~DateTime.hour #0a MOD #08 MUL ADD2 =Screen.addr 
		#22 =Screen.color
	DUP2 #0008 SUB2 =Screen.x 
		,font_hex #00 ~DateTime.minute #0a DIV #08 MUL ADD2 =Screen.addr 
		#22 =Screen.color
	DUP2 =Screen.x 
		,font_hex #00 ~DateTime.minute #0a MOD #08 MUL ADD2 =Screen.addr 
		#22 =Screen.color
	DUP2 #0010 ADD2 =Screen.x 
		,font_hex #00 ~DateTime.second #0a DIV #08 MUL ADD2 =Screen.addr 
		#22 =Screen.color
	DUP2 #0018 ADD2 =Screen.x 
		,font_hex #00 ~DateTime.second #0a MOD #08 MUL ADD2 =Screen.addr 
		#22 =Screen.color
	POP2

BRK

@draw-line ( x1 y1 x2 y2 color -- )
	
	( load ) =color =line.y0 =line.x0 =line.y =line.x
	~line.x0 ~line.x SUB2 ABS2 =line.dx
	~line.y0 ~line.y SUB2 ABS2 #0000 SWP2 SUB2 =line.dy
	#ffff #00 ~line.x ~line.x0 LTS2 #0002 MUL2 ADD2 =line.sx 
	#ffff #00 ~line.y ~line.y0 LTS2 #0002 MUL2 ADD2 =line.sy 
	~line.dx ~line.dy ADD2 =line.e1
	$loop
		~line.x =Screen.x ~line.y =Screen.y ~color =Screen.color
		~line.x ~line.x0 EQU2 ~line.y ~line.y0 EQU2 #0101 EQU2 ^$end JNZ
		~line.e1 #0002 MUL2 =line.e2
		~line.e2 ~line.dy LTS2 ^$skipy JNZ
			~line.e1 ~line.dy ADD2 =line.e1
			~line.x ~line.sx ADD2 =line.x
		$skipy
		~line.e2 ~line.dx GTS2 ^$skipx JNZ
			~line.e1 ~line.dx ADD2 =line.e1
			~line.y ~line.sy ADD2 =line.y
		$skipx
		,$loop JMP2

	$end

RTN

@table ( 60 positions on a circle in bytes )
[
	8000 8d00 9a02 a706 b40b c011 cb18 d520 
	df2a e734 ee40 f44b f958 fd65 ff72 ff80 
	ff8d fd9a f9a7 f4b4 eec0 e7cb dfd5 d5df 
	cbe7 c0ee b4f4 a7f9 9afd 8dff 80ff 72ff 
	65fd 58f9 4bf4 40ee 34e7 2adf 20d5 18cb 
	11c0 0bb4 06a7 029a 008d 0080 0072 0265 
	0658 0b4b 113f 1834 202a 2a20 3418 3f11 
	4b0b 5806 6502 7200
]

@font_hex ( 0-F ) 
[
	007c 8282 8282 827c 0030 1010 1010 1010
	007c 8202 7c80 80fe 007c 8202 1c02 827c
	000c 1424 4484 fe04 00fe 8080 7c02 827c
	007c 8280 fc82 827c 007c 8202 1e02 0202
	007c 8282 7c82 827c 007c 8282 7e02 827c
	007c 8202 7e82 827e 00fc 8282 fc82 82fc 
	007c 8280 8080 827c 00fc 8282 8282 82fc 
	007c 8280 f080 827c 007c 8280 f080 8080
]