HaxePunk/HaxePunk

import haxepunk.HXP;
import haxepunk.Scene;
import haxepunk.Entity;
import haxepunk.graphics.text.Text;
import haxepunk.input.Input;
import haxepunk.input.Key;
import haxepunk.input.Mouse;

// have to import scenes for compilation
import platformer.GameScene;
import masks.GameScene;
import masks.SlopedScene;
import effects.GameScene;
import layers.LayerScene;

class DemoScene extends Scene
{

    public function new()
    {
        super();

        overlayText = new Text("Press '[' and ']' to switch demos", 0, 0);
        overlayText.resizable = true;
        overlayText.scrollX = overlayText.scrollY = 0;
        var overlay:Entity = new Entity(0, HXP.screen.height - 20, overlayText);
        overlay.layer = -10;
        add(overlay);

        var c = Type.getClassName(Type.getClass(this));
        for (i in 0..._scenes.length)
        {
            if (_scenes[i] == c)
            {
                _currentScene = i;
                break;
            }
        }

        tapTime = 0;

        Key.define("next_scene", [Key.LEFT_SQUARE_BRACKET]);
        Key.define("prev_scene", [Key.RIGHT_SQUARE_BRACKET]);
        Key.define("fullscreen", [Key.F]);
        onInputPressed.next_scene.bind(nextScene);
        onInputPressed.prev_scene.bind(previousScene);
        onInputPressed.fullscreen.bind(function() HXP.fullscreen = !HXP.fullscreen);
    }

    function loadScene():Bool
    {
        var classDef = Type.resolveClass(_scenes[_currentScene]);
        if (classDef == null) return false;

        var scene = Type.createInstance(classDef, []);
        if (scene == null) return false;

        HXP.scene = scene;
        return true;
    }

    inline function nextScene()
    {
        _currentScene -= 1;
        if (_currentScene < 0)
            _currentScene = _scenes.length - 1;

        loadScene();
    }

    inline function previousScene()
    {
        _currentScene += 1;
        if (_currentScene > _scenes.length - 1)
            _currentScene = 0;

        loadScene();
    }

    override public function update()
    {
        tapTime -= HXP.elapsed;
        if (Mouse.mousePressed)
        {
            if (tapTime > 0)
            {
                nextScene();
            }
            tapTime = 0.6;
        }

        // cycle through scenes with '[' and ']'
        super.update();
    }

    var overlayText:Text;
    var tapTime:Float;

    static var _currentScene:Int = 0;
    static var _scenes:Array<String> = [
        'masks.GameScene',
        'masks.SlopedScene',
        'effects.GameScene',
        'platformer.GameScene',
        'layers.LayerScene'
    ];

}