//
//    Main menu : Background
//
function class_mmbackground() {
    var logo_dg = 0;
    var logo_fmod = 0;
    var tex_bg = 0;
    var first = 0;

    this.draw = function(){

            // initialization

        logo_dg = img_load( 'dg_ve', false, TEX_CLAMP_TO_EDGE );
        logo_fmod = img_load( 'logos.main/fmod_logo', false, TEX_CLAMP_TO_EDGE);
        tex_bg = img_load( 'metal/metal_teladi_platesC_diff', true, TEX_REPEAT);

        first = time_real();

        // draw this

        this.draw = function() {
            var cur = time_real() - first;
            //
            var tx_offset = Math.sin(time_real()/12.0)*512.0;
            var ty_offset = Math.cos(time_real()/18.0)*512.0;

            img_draw_picbox_strech( tex_bg, 
                    0, 0, 
                    screen_width(), screen_height(), 
                    tx_offset, ty_offset, 
                    screen_width(), screen_height());
                img_draw_center( logo_dg, screen_width() / 2, logo_dg.height() / 2 + 20, 1.0 );

            //
                gui_print( 1, 20, screen_height()-30, 'version: ' + version() );
        };
    };
}

mainmenu_custom_background = new class_mmbackground();

background_set_class( mainmenu_custom_background );

//
//    Human User Interface ( HUI )
//    ============================
//

function human_user_interface(){

    var tex_logo_256;
    var tex_crosshair;
    var tex_extra_loading;
    var tex_sb_main;

    //
    // Main drawing function
    //
    this.draw = function() {

            // initialization
        tex_logo_256    = img_load( 'engine_logo',    false, TEX_CLAMP_TO_EDGE );

        // draw
        this.draw = function() {
            if (!cvar('showinterface')) return;

            // Draw User Info Overlay
            this.draw_overlay();

            // Draw crosshair
            var cross_id = cvar('crosshair');
                    if ( cross_id>0 ) {
                this.crosshair(screen_width() / 2, screen_height() / 2, cross_id-1);
            }
            // Dreams Gate Logo
            img_draw_picbox(tex_logo_256, 
                8, 8,    // X, Y
                0, 0,    // tex : X, Y
                500,100 // tex : W, H
            );

            if (is_extra_loading()) {
                this.show_loading( screen_width()-32-10, 10 );
            }
        };
    };

    this.show_loading = function( x, y ){
        var id = Math.ceil( time_ms() / 50 ) % 12;

        if (!tex_extra_loading) {
            tex_extra_loading = img_load('gui/loading', false, TEX_CLAMP_TO_EDGE);
        }

        img_draw_picrotated( tex_extra_loading, x, y, id * 30 );
    };
    //
    // Draw CrossHair 
    //
    this.crosshair = function( x, y, ID ) {
        //
        // todo: remake it! Add support for custom crosshair icons
        //

            if (!tex_crosshair) {
            tex_crosshair    = img_load( 'gui/crosshairs',    false, TEX_CLAMP_TO_EDGE );
        }

        img_draw_picbox( tex_crosshair,
            x - 32, y - 32,
            (ID % 8)*64, (ID % 8)*64,
            64,64
        );
    };
    //
    // Textured numbers
    //
    this.DrawNumber = function(x, y, number, align) {
            //
        // todo: remake it
        //
        var NUM_H   = [28,21,28,25, 25, 24, 26, 25, 25, 25];
        var NUM_POS = [ 0,28,49,77,102,127,151,177,202,227];


        var num;
        var id;
        var dx;

        if (number<0) number = 0;

        num = number.toString();
        dx = x;
        
        var zerro = '0'; zerro = zerro.charCodeAt(0); // key code: 48

        switch (align) {
        case 0 : 
        break;
        case 1 :
            for( var i=0; i < num.length; i++ ){
                id = num.charCodeAt(i) - zerro;
                dx = dx - NUM_H[id];
            }
        break;
        };

        for ( var i=0; i < num.length; i++ ) {
            id = num.charCodeAt(i) - zerro;

            img_draw_picbox( tex_sb_main, dx, y,
                NUM_POS[id], 229,
                NUM_H[id], 27
            );
            dx += NUM_H[id];
        }
    };

    this.OverlayBig = function( x, y, id, value ) {
        img_draw_picbox(tex_sb_main,
            x, y,
            0,31,
            160,49
        );

        img_draw_picbox(tex_sb_main,
            x+8, y+28,
            160,id*15,
            90,15
        );

        this.DrawNumber(x+160-8, y+10, value, 1);
    };

    this.OverlaySmall = function( x, y, id, value ) {
        img_draw_picbox(tex_sb_main,  x, y,
            0,0,
            160,31
        );

        img_draw_picbox(tex_sb_main,  x+8, y+14,
            160,id*15,
            90,15
        );

        img_draw_picbox(tex_sb_main,  x, y+4,
            0,80,
            Math.ceil( (value*160)/100 ),13
        );
    };

    this.DrawAmmo = function( x, y, id ) {

        img_draw_picbox( tex_sb_main,
            x, y,
            0,31,
            160,49
        );

        img_draw_picbox( tex_sb_main,
            x+8, y+28,
            160, id*15,
            90,15
        );

        this.DrawNumber( x+160-8, y+10, active_weapon.Ammo, 1);
        //
        // todo
        //
            gui_print( 1, x+16,    y - 8,        active_weapon.Name    );
            gui_print( 1, x+60 + 8,    y + 49 - 16,    active_weapon.Packs    );
    };

    this.WeaponSelection = function() {

        var wpn = player_weapons();

        if ( time_real() > wpn.last_selection+4) return;

        var old_FontsAlpha = get_font_alpha();

        var alpha = ( wpn.last_selection+3 )-time_real();
        set_font_alpha( alpha );

        var total_size = 5 * 32 + 1 * 160 + 5 * 4;

        var x, y;

        x = ( screen_width() - total_size ) / 2;
        for ( var i = 0; i<6; i++ ) {
            y = 8 + 85 + 8;

            if ((i == wpn.active_slot) && (weapons_slot(i).weapons_count>0)) {
                for ( var j = 0; j < weapons_slot(i).weapons_count; j++) {

                    img_draw_aquad(tex_sb_main, x, y, 0, 31, 160,49, false, alpha  );

                    if (j == weapons_slot(i).active_id) {
                        gui_print_centerc( 1, x + 160 / 2, y + 49 - 16, weapons_slot(i).ActiveWeaponName,  1,1,1 );
                    }

                    y = y + 49;
                    y = y + 4;
                }

                if (weapons_slot(i).weapons_count>0) 
                    gui_print( 1, x+4,(8+85+8)+4, i+1 );

                x = x + 160;
            } else {
                img_draw_aquad(tex_sb_main, x, y, 1, 93, 32, 33, false, alpha );

                if (weapons_slot(i).weapons_count>0)
                    gui_print( 1, x+4,(8+85+8)+4, i+1 );

                x = x + 32;
                y = y + 32;
            }
            x = x + 4;
        }
        set_font_alpha( old_FontsAlpha );
    };
    //
    // Draw Overlay
    //
    this.draw_overlay = function(){

        tex_sb_main = img_load('gui/def_gui', false, TEX_CLAMP_TO_EDGE);

        this.draw_overlay = function(){
            if (!cvar('showhui')) return;

            // : Ammunition info
            this.DrawAmmo( screen_width()-160-8, screen_height()-47-8, 1 );
            //active_weapon.Packs

            // Player Health
            this.OverlayBig  ( 8, screen_height()-47-8, 0, player_health_percent() );
            // Player Power
            this.OverlaySmall( 8, screen_height()-47-8-30-8, 3, player_power_percent() );
            // Player Armor
            this.OverlayBig  ( screen_width()-160-8-168, screen_height()-47-8, 2, player_armor_percent() );

            // Weapons Info
            this.WeaponSelection();
        };
    };
}

hui_main = new human_user_interface();
hui_set_class( hui_main );