( deck.tal )

( CARD LAYOUT )
( )
( cards are stored as 16-bit values. )
( the high byte holds the flags. )
( the low byte holds the card id. )
( )
( FLAGS )
(   bit 1:    flipping, #80 face down, #00 face up )
(   bits 2-6: unused )
(   bits 7-8: rotation, #00 north, #01 east, #02 south, #03 west )
( )
( IDENTIFIER )
(   00: ace of spades )
(   01: two of spades )
(   ... )
(   0b: king of spades )
(   0c: ace of hearts )
(   0d: two of hearts )
(   ... )
(   19: king of hearts )
(   1a: ace of diamonds )
(   1b: two of diamonds )
(   ... )
(   26: king of diamonds )
(   27: ace of clubs )
(   28: two of clubs )
(   33: king of clubs )

|00 @System     [ &vect $2 &expansion $2 &title $2 &metadata $2 &r $2 &g $2 &b $2 ]
|10 @Console    [ &vect $2 &r $1 &exec $2 &mode $1 &dead $1 &exit $1 &w $1 ]
|20 @Screen     [ &vect $2 &w $2 &h $2 &auto  $1 &pad $1 &x $2 &y $2 &addr $2 &px $1 &sprite $1 ]
|80 @Controller [ &vect $2 &button $1 &key $1 &fn $1 ]
|90 @Mouse      [ &vect $2 &x $2 &y $2 &state $1 &pad $3 &scrollx $2 &scrolly $2 ]
|a0 @File1      [ &vect $2 &ok $2 &stat $2 &del $1 &append $1 &name $2 &len $2 &r $2 &w $2 ]
|b0 @File2      [ &vect $2 &ok $2 &stat $2 &del $1 &append $1 &name $2 &len $2 &r $2 &w $2 ]
|c0 @DateTime   [ &y $2 &m $1 &d $1 &hr $1 &min $1 &sec $1 &dow $1 &doy $2 &isdst $1 ]

( BUG: stack is growing, maybe redraw-all ? )

( TODO: move piles )
( TODO: shuffle deck only )
( TODO: try out rounded corners )
( - face down can use white as transparent )
( - face up black cards use red as transparent )
( - face up red cards use black as transparent )
( TODO: optional snap-to-grid setting? )

( ROTATION )
( N 00 to E 01: dx=+0 dy=+8 )
( 01 to 02: dx=+0 dy=+0 )
( 02 to 03: dx=-8 dy=+0 )
( 03 to 00: dx=+8 dy=-8 )
( will require unhardcoding bounding boxes )

( BUG: try moving the "whole deck" and get into a weird state )

|0000
    @prev-button $1
    @prev-mouse-state $1
    @prev-mouse-x $2
    @prev-mouse-y $2
    @card-is-held $1

|0100
    init-rng-from-datetime
    init-cards
    reset

    #2d8b .System/r DEO2
    #2d18 .System/g DEO2
    #2d14 .System/b DEO2

    #0100 .Screen/w DEO2
    #00c0 .Screen/h DEO2

    ;on-key .Controller/vect DEO2
    ;on-mouse .Mouse/vect DEO2

    draw-background
    draw-cards
    BRK

@on-mouse ( -> brk )
    on-move
    on-click-down
    on-click-up
    .Mouse/state DEI .prev-mouse-state STZ
    BRK

@mouse-dx ( -> dx* ) .Mouse/x DEI2 .prev-mouse-x LDZ2 SUB2 JMP2r
@mouse-dy ( -> dy* ) .Mouse/y DEI2 .prev-mouse-y LDZ2 SUB2 JMP2r

@mouse-dx8 ( -> dx^ ) .Mouse/x DEI2 .prev-mouse-x LDZ2 SUB2 NIP JMP2r
@mouse-dy8 ( -> dy^ ) .Mouse/y DEI2 .prev-mouse-y LDZ2 SUB2 NIP JMP2r

@on-move ( -> )
    .Mouse/x DEI2 .prev-mouse-x LDZ2 NEQ2 ?&redraw
    .Mouse/y DEI2 .prev-mouse-y LDZ2 NEQ2 ?&redraw
    JMP2r
    &redraw

    ( TODO: working stack overflow? )
    .card-is-held LDZ #00 EQU ?&not-dragging
    mouse-dx8 mouse-dy8 STH2    ( [dxdy*] )
    ;cards/end held-end-offset ( limit* start* [dxdy*] )
    &hloop
        DUP2 STH2kr move-card    ( limit* pos* [dxdy*] )
        #0004 ADD2 GTH2k ?&hloop ( limit* pos+4* [dxdy*] )
    POP2 POP2 POP2r

    draw-background draw-cards ( TODO: fix me and remove this )

    &not-dragging
    #00 .Screen/auto DEO
    clear-prev-mouse
    ( TODO: clear prev held card )
    ( TODO: draw curr held card )
    draw-curr-mouse
    JMP2r

@clear-prev-mouse ( -> )
    .prev-mouse-x LDZ2 .Screen/x DEO2
    .prev-mouse-y LDZ2 .Screen/y DEO2
    ;blank .Screen/addr DEO2
    #41 .Screen/sprite DEO JMP2r

@draw-curr-mouse ( -> )
    .Mouse/x DEI2 DUP2 .prev-mouse-x STZ2 .Screen/x DEO2
    .Mouse/y DEI2 DUP2 .prev-mouse-y STZ2 .Screen/y DEO2
    ;cursor .Screen/addr DEO2
    #43 .Screen/sprite DEO JMP2r

@on-click-down ( -> )
    .Mouse/state DEI             ( state^ )
    .prev-mouse-state LDZ #ff EOR AND ( down^ )
    #01 AND ( TODO: support more than one button )
    ?&click JMP2r ( TODO: check particular button )
    &click
    find-mouse-over-card
    ORAk ?&found POP2 JMP2r
    &found
    raise-cards .card-is-held STZ
    !draw-cards

@on-click-up ( -> )
    .Mouse/state DEI #ff EOR    ( not-state^ )
    .prev-mouse-state LDZ AND        ( up^ )
    #01 AND ( TODO: support more than one button )
    ?&unclick JMP2r ( TODO: check particular button )
    &unclick
    #00 .card-is-held STZ
    draw-background draw-cards
    JMP2r

@on-key ( -> brk )
    on-press on-release
    .Controller/button DEI .prev-button STZ
    BRK

@on-release ( -> )
    .Controller/button DEI #ff EOR ( not-button^ )
    .prev-button LDZ AND           ( release^ )
    DUP #00 EQU ?&skip
    DUP #08 AND ?&start
    &skip POP JMP2r
    &start POP !draw-cards

@on-press ( -> )
    .Controller/button DEI         ( button^ )
    .prev-button LDZ #ff EOR AND   ( press^ )
    DUP #00 EQU ?&skip
    DUP #01 AND ?&ctrl
    DUP #02 AND ?&alt
    DUP #04 AND ?&select
    DUP #08 AND ?&start
    &skip POP JMP2r
    &ctrl POP !try-to-flip
    &alt POP !flip-all-cards
    &select POP !randomize
    &start POP !reset

~cards.tal