( launcher )

%+  { ADD } %-   { SUB }  %*  { MUL }  %/  { DIV }
%<  { LTH } %>   { GTH }  %=  { EQU }  %!  { NEQ }
%++ { ADD2 } %-- { SUB2 } %** { MUL2 } %// { DIV2 }
%<< { LTH2 } %>> { GTH2 } %== { EQU2 } %!! { NEQ2 }

%2*  { #10 SFT } %2/  { #01 SFT } %2**  { #10 SFT2 } %2//  { #01 SFT2 }
%4*  { #20 SFT } %4/  { #02 SFT } %4**  { #20 SFT2 } %4//  { #02 SFT2 }
%8*  { #30 SFT } %8/  { #03 SFT } %8**  { #30 SFT2 } %8//  { #03 SFT2 }
%10* { #40 SFT } %10/ { #04 SFT } %10** { #40 SFT2 } %10// { #04 SFT2 }
%20* { #50 SFT } %20/ { #05 SFT } %20** { #50 SFT2 } %20// { #05 SFT2 }

%40** { #60 SFT2 }

%RTN { JMP2r }
%TOS { #00 SWP }

%AUTO-NONE   { #00 .Screen/auto DEO }
%AUTO-XADDR  { #05 .Screen/auto DEO }
%AUTO-YADDR  { #06 .Screen/auto DEO }

%HALT   { #010f DEO }
%EMIT   { #18 DEO }
%PRINT  { ;print-str JSR2 #0a EMIT }
%DEBUG  { ;print-hex/byte JSR2 #0a EMIT }
%DEBUG2 { ;print-hex JSR2 #0a EMIT }

%LINES-COUNT { .browser/y2 LDZ2 .browser/y LDZ2 -- 10// NIP }

( devices )

|00 @System     &vector $2 &wst      $1 &rst    $1 &pad    $4 &r      $2 &g      $2 &b    $2 &debug  $1 &halt $1
|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 &pad    $3 &scrollx $2 &scrolly $2
|a0 @File       &vector $2 &success  $2 &stat   $2 &delete $1 &append $1 &name $2 &length $2 &read $2 &write $2
|b0 @DateTime   &year   $2 &month    $1 &day    $1 &hour   $1 &minute $1 &second $1 &dotw $1 &doty $2 &isdst $1 

( variables )

|0000

@pointer
	&x  $2 &y  $2
@browser
	&x $2 &y $2 &x2 $2 &y2 $2 
	&sel $1 &last $1 &scroll $1

( init )

|0100 ( -> )

	( theme ) 
	#f079 .System/r DEO2 
	#f0c2 .System/g DEO2 
	#f0a4 .System/b DEO2

	( vectors )
	;on-frame .Screen/vector DEO2
	;on-button .Controller/vector DEO2
	;on-mouse .Mouse/vector DEO2

	( setup synth )
	#0102 .Audio0/adsr DEO2
	;sin-pcm .Audio0/addr DEO2
	#0100 .Audio0/length DEO2
	#dd .Audio0/volume DEO ( TODO: turn ON )

	( place )
	#0088 .browser/x STZ2
	#0010 .browser/y STZ2
	.Screen/height DEI2 #33 SFT2 #0011 -- .browser/y2 STZ2

	( draw mascot )
	#0010 #0010 #0060 #0060 ;mascot-icn #01 ;draw-icn JSR2

	;load-dir JSR2

	( theme support )
	;load-theme JSR2

	( force selection )
	#ff .browser/last STZ
	#00 ;select-file JSR2

BRK

@on-frame ( -> )

	( unused )

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
	#41 .Mouse/state DEI #01 = + .Screen/sprite DEO

	( wheel )
	.Mouse/scrolly INC DEI
	DUP #ff ! ,&no-up JCN
		.browser/scroll LDZ #00 = ,&no-up JCN
		DUP .browser/scroll LDZ + ;scroll-to JSR2
		&no-up
	DUP #01 ! ,&no-down JCN
		.browser/scroll LDZ ;dir/lines LDA = ,&no-down JCN
		DUP .browser/scroll LDZ + ;scroll-to JSR2
		&no-down
	POP

	( within browser )
	.Mouse/y DEI2 .browser/y LDZ2 << ,&outside JCN
	.Mouse/y DEI2 .browser/y2 LDZ2 #0010 -- >> ,&outside JCN
	( select choice )
	.Mouse/y DEI2 .browser/y LDZ2 --
		10// NIP .browser/scroll LDZ + ;select-file JSR2
	( run choice )
	.Mouse/state DEI #00 = ,&no-click JCN
		.browser/sel LDZ ;run-file JSR2
		&no-click
	&outside

BRK

@on-button ( -> )

	( controller )
	.Controller/button DEI
	DUP #10 ! ,&no-up JCN
		.browser/sel LDZ #00 = ,&no-up JCN
		.browser/sel LDZ #01 - ;select-file JSR2 
		;follow-selection JSR2
		POP BRK
		&no-up
	DUP #20 ! ,&no-down JCN
		.browser/sel LDZ INC ;dir/lines LDA = ,&no-down JCN 
		.browser/sel LDZ INC ;select-file JSR2 
		;follow-selection JSR2
		POP BRK
		&no-down
	DUP #01 ! ,&no-a JCN
		.browser/sel LDZ ;run-file JSR2 
		POP BRK
		&no-a
	POP
	( keyboard )
	.Controller/key DEI
	DUP #0d ! ,&no-enter JCN
		.browser/sel LDZ ;run-file JSR2
		POP BRK
		&no-enter
	POP

BRK

@load-dir ( -- )

	;dir/path .File/name DEO2
	#1000 .File/length DEO2
	;dir/data .File/read DEO2
	.File/success DEI2 ;dir/length STA2

	( split with null-char )
	;dir/data
	&while
		LDAk #1f > ,&no-lb JCN
			( split ) STH2k #00 STH2r STA
			( count lines ) ;dir/lines LDA INC ;dir/lines STA
			&no-lb
		INC2 LDAk ,&while JCN
	POP2

RTN

@select-file ( id -- )

	( has changed )
	DUP .browser/last LDZ ! ,&has-changed JCN
		POP RTN
		&has-changed

	#00 ;draw-browser JSR2
	DUP .browser/sel STZ
	DUP .browser/last STZ
		#30 + .Audio0/pitch DEO
	#01 ;draw-browser JSR2

	( draw mascot )
	#0010 #0010 #0060 #0060 
	;mascot-icn [ .browser/sel LDZ #03 AND TOS #0480 ** ++ ] #01 
		;draw-icn JSR2

	( draw position )
	AUTO-YADDR
	#0010 .Screen/x DEO2
	#0080 .Screen/y DEO2
	.browser/sel LDZ #02 ;draw-byte JSR2
	LIT '/ #02 ;draw-char JSR2
	;dir/lines LDA #01 - #02 ;draw-byte JSR2
	AUTO-NONE

RTN

@follow-selection ( -- )

	LINES-COUNT .browser/sel LDZ .browser/scroll LDZ -
	DUP2 > ,&no-down JCN
		.browser/scroll LDZ INC ,scroll-to JSR
		&no-down
	DUP2 SWP < ,&no-up JCN
		.browser/sel LDZ ,scroll-to JSR
		&no-up
	POP2

RTN

@scroll-to ( line -- )

	STH
	( more lines than visible )
	;dir/lines LDA LINES-COUNT 
	DUP2 > ,&can-scroll JCN
		POPr POP2 RTN
		&can-scroll
	( less than max scroll )
	- INC STHkr > ,&valid-scroll JCN
		POPr RTN
		&valid-scroll 
	#00 ;draw-browser JSR2
	STHr .browser/scroll STZ
	#01 ;draw-browser JSR2

RTN

@run-file ( id -- )

	;get-entry JSR2 #0005 ++
	
	DUP2 ;check-rom JSR2 ,&valid JCN
		POP2 RTN
		&valid

	;load-rom JSR2 

RTN

@redraw ( -- )

	( unused )

RTN

@draw-browser ( mask -- )

	STH

	( draw hand )
	.browser/x LDZ2 #0018 -- .browser/y LDZ2 
	.browser/sel LDZ .browser/scroll LDZ - TOS 10** ++ 
	#0010 #0010 
		;hand-icn STHkr #02 * ;draw-icn JSR2
	( draw files )
	LINES-COUNT #00
	&loop
		.browser/x LDZ2 .Screen/x DEO2
		DUP TOS 10** .browser/y LDZ2 ++ .Screen/y DEO2
		DUP .browser/scroll LDZ + ;get-entry JSR2 
			DUP2 ;get-type JSR2 ;draw-type JSR2
			#01 STHkr * ;draw-str JSR2
		INC GTHk ,&loop JCN
	POP2

	POPr

RTN

@get-type ( line* -- type )

	;scap JSR2 #0004 -- ;&rom-ext ;scmp JSR2

RTN
	&rom-ext ".rom $1

@get-entry ( id -- addr* )

	( limit ) STH
	( counter ) LITr 00
	;dir/length LDA2 #0000
	&loop
		EQUkr STHr #00 = ,&no-reached JCN
			POP2r NIP2 ;dir/data ++ RTN
			&no-reached
		DUP2 ;dir/data ++ LDA #00 ! ,&no-lb JCN
			INCr
			&no-lb
		INC2 GTH2k ,&loop JCN
	POP2 POP2
	POP2r
	;dir/data

RTN

@draw-type ( type -- )

	STHk TOS 20** ;file-icns ++ .Screen/addr DEO2
	AUTO-XADDR
	#02 STHkr - .Screen/sprite DEOk DEO

	.Screen/x DEI2k #0010 -- ROT DEO2
	.Screen/y DEI2k #0008 ++ ROT DEO2
	
	#02 STHr - .Screen/sprite DEOk DEO

	.Screen/x DEI2k #0008 ++ ROT DEO2
	.Screen/y DEI2k #0008 -- ROT DEO2
	AUTO-NONE

RTN

@draw-icn ( x* y* width* height* addr* color  -- )
	
	AUTO-XADDR
	( load ) STH .Screen/addr DEO2 ,&height STR2 ,&width STR2 ,&y STR2 ,&x STR2
	,&height LDR2 #0000 
	&ver
		( save ) DUP2 ,&y LDR2 ADD2 .Screen/y DEO2
		,&x LDR2 .Screen/x DEO2
		,&width LDR2 #0000
		&hor
			( draw ) STHkr .Screen/sprite DEO
			#0008 ADD2 GTH2k ,&hor JCN
		POP2 POP2
		#0008 ADD2 GTH2k ,&ver JCN
	POP2 POP2
	POPr
	AUTO-NONE

RTN
	&x $2 &y $2 &width $2 &height $2

@draw-str ( text* color -- )

	AUTO-YADDR
	STH
	&while
		LDAk STHkr ,draw-char JSR
		INC2 LDAk ,&while JCN
	POP2
	POPr

RTN

@draw-short ( short* color -- )

	STH SWP STHkr ,draw-byte JSR
	STHr ,draw-byte JSR

RTN

@draw-byte ( byte color -- )

	STH
	DUP #04 SFT ,&parse JSR STHkr ,draw-char JSR
	#0f AND ,&parse JSR STHr ,draw-char JSR

RTN
	&parse ( byte -- char ) DUP #09 GTH ,&above JCN #30 ADD JMP2r 
	&above #57 ADD JMP2r

@draw-char ( char color -- )

	SWP
	[ #20 - #00 SWP #40 SFT2 ;font ++ ] .Screen/addr DEO2
	.Screen/sprite DEOk DEO
	.Screen/x DEI2k #0008 ++ ROT DEO2
	.Screen/y DEI2k #0010 -- ROT DEO2

JMP2r

( theme )

@theme-txt ".theme $1

@load-theme ( -- )

	;theme-txt .File/name DEO2 
	#0006 .File/length DEO2 
	#fffa .File/read DEO2

	.File/success DEI2 #0006 !! ,&ignore JCN
		#fffa LDA2 .System/r DEO2
		#fffc LDA2 .System/g DEO2
		#fffe LDA2 .System/b DEO2
		&ignore
	;redraw JSR2

RTN

( helpers )

@print-str ( string* -- )

	#0001 SUB2 
	&while
		INC2 LDAk DUP #18 DEO ,&while JCN 
	POP2

JMP2r

@print-hex ( value* -- )

	SWP ,&byte JSR 
	&byte ( byte -- )
		STHk #04 SFT ,&parse JSR #18 DEO
		STHr #0f AND ,&parse JSR #18 DEO
	JMP2r
	&parse ( byte -- char ) DUP #09 GTH ,&above JCN #30 ADD JMP2r 
	&above #57 ADD JMP2r

JMP2r

@scmp ( a* b* -- flag )

	STH2
	&loop
		LDAk LDAkr STHr = ,&not-diff JCN
			POP2 POP2r #00 RTN
			&not-diff
		LDAk LDAkr STHr #0000 !! ,&not-end JCN
			POP2 POP2r #01 RTN
			&not-end
		INC2 INC2r
		,&loop JMP
	POP2 POP2r #00

RTN

@scap ( str* -- str-end* )

	( clamp ) LDAk #00 ! JMP RTN
	&while INC2 LDAk ,&while JCN

RTN

@pointer-icn
	80c0 e0f0 f8e0 1000
@hand-icn
	000c 0a0a 1224 4780
	0000 0000 0000 fc02
	8180 8080 8040 3f00
	fc20 c020 c020 c000
@file-icns
	003f 3f30 3f30 3f30
	00fc fc0c fc0c fc0c
	3f33 3f3f 3f3f 3f00
	fcfc fcc4 c8d0 e000
	003f 3f30 3132 3231
	00fc fc0c 8c4c 4c8c
	303f 3f3f 3f3f 3f00
	0cfc fcc4 c8d0 e000
@sin-pcm
	8083 8689 8c8f 9295 989b 9ea1 a4a7 aaad
	b0b3 b6b9 bbbe c1c3 c6c9 cbce d0d2 d5d7
	d9db dee0 e2e4 e6e7 e9eb ecee f0f1 f2f4
	f5f6 f7f8 f9fa fbfb fcfd fdfe fefe fefe
	fffe fefe fefe fdfd fcfb fbfa f9f8 f7f6
	f5f4 f2f1 f0ee eceb e9e7 e6e4 e2e0 dedb
	d9d7 d5d2 d0ce cbc9 c6c3 c1be bbb9 b6b3
	b0ad aaa7 a4a1 9e9b 9895 928f 8c89 8683
	807d 7a77 7471 6e6b 6865 625f 5c59 5653
	504d 4a47 4542 3f3d 3a37 3532 302e 2b29
	2725 2220 1e1c 1a19 1715 1412 100f 0e0c
	0b0a 0908 0706 0505 0403 0302 0202 0202
	0102 0202 0202 0303 0405 0506 0708 090a
	0b0c 0e0f 1012 1415 1719 1a1c 1e20 2225
	2729 2b2e 3032 3537 3a3d 3f42 4547 4a4d
	5053 5659 5c5f 6265 686b 6e71 7477 7a7d

~projects/library/check-rom.tal
~projects/library/load-rom.tal

~projects/assets/mascot0cx0c.tal
~projects/assets/msx01x02.tal

@dir
	&path ". $1
	&lines $1
	&length $2
	&data