uxn-utils/gui/lander/lander.tal

( uxnemu lander.rom )

|00 @System &vector $2 &wst $1 &rst $1 &pad $4 &r $2 &g $2 &b $2
|10 @Console &vector $2 &read $1 &pad $5 &write $1 &error $1
|20 @Screen &vector $2 &width $2 &height $2 &auto $1 &pad $1 &x $2 &y $2 &addr $2 &pixel $1 &sprite $1
|30 @Audio0 &vector $2 &position $2 &output $1 &pad $3 &adsr $2 &length $2 &addr $2 &volume $1 &pitch $1
|80 @Controller &vector $2 &button $1 &key $1
|90 @Mouse &vector $2 &x $2 &y $2 &state $1 &wheel $1

|0100 ( -> )

	( theme )
	#0f00 .System/r DEO2
	#0fff .System/g DEO2
	#0f0f .System/b DEO2
	( resize )
	#0190 .Screen/width DEO2
	#00f0 .Screen/height DEO2
	( vectors )
	;on-control .Controller/vector DEO2
	redraw

BRK

(
@|vectors )

@on-control ( -> )

	.Controller/button DEI
	DUP #10 NEQ ?&no-u
		redraw
		&no-u
	DUP #20 NEQ ?&no-d
		redraw
		&no-d
	POP


BRK

(
@|drawing )

@redraw ( -- )

	#0000
		DUP2 .Screen/x DEO2
		.Screen/y DEO2
	#80 .Screen/pixel DEO
	[ LIT &o $1 ] draw-lander

JMP2r

@draw-lander ( orientation -- )

	POP
	#0010 #0000
	&l
		DUP2 draw-circle
		INC2 GTH2k ?&l
	POP2 POP2

JMP2r

@draw-circle ( radius* -- )

	;get-point/radius STA2
	#2000
	&l
		STHk
		INCk get-point
		STHr get-point
			#01 draw-line
		INC GTHk ?&l
	POP2

JMP2r

@get-point ( id -- x* y* )

	[ LIT2r &radius $2 ]
	#1f AND DUP ADD
	#00 SWP ;circle-tbl ADD2 LDA2
	#00 SWP STH2kr MUL2 #04 SFT2
	ROT
	#00 SWP STH2r MUL2 #04 SFT2
	SWP2

JMP2r

@draw-line ( x1* y1* x2* y2* color -- )

	,&color STR
	,&y STR2
	,&x STR2
	,&y2 STR2
	,&x2 STR2
	,&x LDR2 ,&x2 LDR2 SUB2 abs2 ,&dx STR2
	#0000 ,&y LDR2 ,&y2 LDR2 SUB2 abs2 SUB2 ,&dy STR2
	#ffff [ LIT2 00 _&x2 ] LDR2 ,&x LDR2 lts2 DUP2 ADD2 ADD2 ,&sx STR2
	#ffff [ LIT2 00 _&y2 ] LDR2 ,&y LDR2 lts2 DUP2 ADD2 ADD2 ,&sy STR2
	[ LIT2 &dx $2 ] [ LIT2 &dy $2 ] ADD2 STH2
	&while
	[ LIT2 &x2 $2 ] DUP2 .Screen/x DEO2 [ LIT2 &x $2 ] EQU2
	[ LIT2 &y2 $2 ] DUP2 .Screen/y DEO2 [ LIT2 &y $2 ] EQU2
		[ LIT2 &color $1 -Screen/pixel ] DEO
		AND ?&end
	STH2kr DUP2 ADD2 DUP2
	,&dy LDR2 lts2 ?&skipy
		STH2r ,&dy LDR2 ADD2 STH2
		,&x2 LDR2 [ LIT2 &sx $2 ] ADD2 ,&x2 STR2
	&skipy
	,&dx LDR2 gts2 ?&while
		STH2r ,&dx LDR2 ADD2 STH2
		,&y2 LDR2 [ LIT2 &sy $2 ] ADD2 ,&y2 STR2
	!&while
	&end
	POP2r

JMP2r

(
@|stdlib )

@abs2 DUP2 #0f SFT2 EQU ?&end #0000 SWP2 SUB2 &end JMP2r
@lts2 #8000 STH2k ADD2 SWP2 STH2r ADD2 GTH2 JMP2r
@gts2 #8000 STH2k ADD2 SWP2 STH2r ADD2 LTH2 JMP2r

@phex ( short* -- )
	SWP phex/b
	&b DUP #04 SFT phex/c
	&c #0f AND DUP #09 GTH #27 MUL ADD #30 ADD #18 DEO
JMP2r

@circle-tbl [
	8000 9802 b009 c715 da25 ea38 f64f fd67
	ff80 fd98 f6b0 eac7 dada c7ea b0f6 98fd
	80ff 67fd 4ff6 38ea 25da 15c7 09b0 0298
	0080 0267 094f 1538 2525 3815 4f09 6702 ]