uxn/projects/examples/demos/dvd.tal

( DVD Bounce )

|00 @System &vector $2 &wst $1 &rst $1 &eaddr $2 &ecode $1 &pad $1 &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
|000

	@dvd &x $2 &y $2

|100

@on-reset ( -> )
	( | theme )
	#4cfd .System/r DEO2
	#4cf3 .System/g DEO2
	#dcf2 .System/b DEO2
	( | vectors )
	;on-frame .Screen/vector DEO2
	( | starting position )
	.Screen/width DEI2 DUP2 #01 SFT2 .dvd/x STZ2
	#0020 SUB2 ;on-frame/hit-hor STA2
	.Screen/height DEI2 DUP2 #01 SFT2 .dvd/y STZ2
	#0010 SUB2 ;on-frame/hit-ver STA2
	( | drawing mode )
	[ LIT2 36 -Screen/auto ] DEO
	#01 <draw-dvd>
	BRK

@on-frame ( -> )
	#00 <draw-dvd>
	( | x )
	.dvd/x LDZ2
	( left ) ORAk ?{
		[ LIT2 ADD2 _&x ] STR }
	( right ) DUP2 [ LIT2 &hit-hor $2 ] NEQ2 ?{
		[ LIT2 SUB2 _&x ] STR }
	#0001 [ &x ADD2 ] .dvd/x STZ2
	( | y )
	.dvd/y LDZ2
	( top ) ORAk ?{
		[ LIT2 ADD2 _&y ] STR }
	( bottom ) DUP2 [ LIT2 &hit-ver $2 ] NEQ2 ?{
		[ LIT2 ADD2 _&y ] STR }
	#0001 [ &y ADD2 ] .dvd/y STZ2
	#01 <draw-dvd>
	BRK

@<draw-dvd> ( color -- )
	;dvd-icn .Screen/addr DEO2
	.dvd/x LDZ2 .Screen/x DEO2
	.dvd/y LDZ2 .Screen/y DEO2
	.Screen/sprite DEOk DEO
	JMP2r

@dvd-icn ( 4 x 2 )
	[
	001f 3f38 3838 787f 00fe fe7e 7777 e3c3
	000f 1f3b 7b77 e7c7 00fc fe8f 8707 0efc
	7f00 000f ff7f 0700 0301 00ff f0f8 ff00
	8700 00ff 7f7f ff00 f000 00e0 fcfc 8000 ]