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aliteff

Collisions in Panda.js

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Hi everyone, 

I am yet to work out how to do collisions in panda.js ! 

 

 

I have the following two objects : a Pluck and a Sheldon and trying to detect collision between the two. I really couldn't figure out how to use the Collisionsolver ? 

 

 I started up with the following example: http://vermeire.home.xs4all.nl/panda/fiddler.html

 

any clues would be much appreciated 

 

CODE

 

 

  game.createClass('Pluck', 'Sprite', {
 
            init: function(x, y) {
 
                this._super('img/pluck1.png', x, y, {anchor: { x: 0.5, y: 0.5 }});
                this.position = {x: x, y: y};
 
                //body
                this.body = new game.Body({
                    position: { x: x, y: y },
                    //velocityLimit: { x: 300, y: 1000 },
                    //velocity: {x:0,y:0},
                    collisionGroup: 0,
                    mass: 0
                });
                this.body.remove = this.remove.bind(this);
                this.body.addShape(new game.Circle(100));
                //add sprite to scene
                game.scene.addObject(this);
                //add body of this sprite to the world object
                game.scene.world.addBody(this.body);
                game.scene.world.addBodyCollision(this.body,0)
 
                //add sprite to display container
                game.scene.stage.addChild(this);
 
 
                game.scene.addTween(this.body.position, {
                    y: game.system.height
                }, 2000, {
                    easing: easings[currentEasing] + '.InOut',
                    repeat: Infinity,
                    yoyo: true
                }).start();
                //create a body using a body definition
 
            },
 
            update: function(){
                this.position.x = this.body.position.x;
                this.position.y = this.body.position.y;
            },
 
            remove: function() {
                game.scene.removeObject(this);
                game.scene.world.removeBody(this.body);
                game.scene.stage.removeChild(this);
            }
 
 
        });
 
------ SECOND OBJECT
 
   game.createClass('Sheldon', 'Sprite', {
 
            init: function(x, y) {
 
                this._super('img/sheldonright.png', x, y, {anchor: { x: 0.5, y: 0.5 }});
 
                this.body = new game.Body({
                    position: { x: x, y: y },
                    //velocityLimit: { x: 150, y: 150 },
                    //velocity: {x:-100,y:-50},
                    collisionGroup: 1,
                    collideAgainst: 0,
                    mass: 0
                });
                this.body.collide = this.collide.bind(this);
                this.body.addShape(new game.Rectangle(60, 60));
                //add sprite to scene
                game.scene.addObject(this);
                //add body of this sprite to the world object
                game.scene.world.addBody(this.body);
                game.scene.world.addBodyCollision(this.body,1);
                //add sprite to display container
                game.scene.stage.addChild(this);
 
 
 
                //create a body using a body definition
 
            },
            collide: function(opponent) {
                console.dir(arguments);
                console.log("Collision!");
                opponent.remove();
                return true;
            },
            update: function(){
                //The box2D world keeps track of the movement and position of the body.
                //use the update function to get the sprite in the right spot
 
 
                if(game.keyboard.down("UP")){
                }
                if(game.keyboard.down("DOWN")){
                }
                if(game.keyboard.down("LEFT")){
                    this.setTexture('img/sheldonleft.png');
                    this.position.x =  this.body.position.x;
                    this.body.position.x =  this.body.position.x -5;
 
                }
 
                if(game.keyboard.down("RIGHT")){
                    this.setTexture('img/sheldonright.png');
 
                    this.position.x =  this.body.position.x;
 
                    this.body.position.x +=5;
 
                }
 
            },
            remove: function() {
                game.scene.removeObject(this);
                game.scene.world.removeBody(this.body);
                game.scene.stage.removeChild(this);
            }
 
 
 
 
        });
 
 
GAME SCENE
 
    game.createScene('scene1', {
            backgroundColor: 0xffffff,
            init: function() {
                this.world = new game.World(0, 0);
 
                var background = new game.Background('img/background.png');
 
                var sat = new game.Sat(50, 50);
 
 
                var sheldon = new game.Sheldon(50,400);
 
                var clouds = new game.Clouds();
 
                //var score = new game.Score(650, 50);
 
                var pluck = new game.Pluck(50,50);
 
                var emitter = new game.Emitter();
                emitter.textures.push('img/bill2.png', 'img/bill1.png');
                emitter.position.set(sat.position.x, sat.position.y);
                emitter.rate = 1000;
                emitter.count = 2;
                emitter.target.set(300, sheldon.position.y);
                emitter.targetForce = 200;
                emitter.startAlpha = 1;
                emitter.endAlpha = 1;
                emitter.positionVar.set(300, 0);
 
                emitter.addTo(game.scene.stage);
                emitter.angle = 0.2;
                emitter.angleVar = 0;
 
                game.scene.addEmitter(emitter);
 
                var emitter2 = new game.Emitter();
                emitter2.textures.push('img/pluck2.png', 'img/pluck3.png', 'img/pluck4.png', 'img/pluck5.png');
                emitter2.position.set(sat.position.x, sat.position.y);
 
                emitter2.target.set(800, 800);
                emitter2.targetForce = 50;
                emitter2.rate = 500;
                emitter2.count = 1;
                emitter2.startAlpha = 1;
                emitter2.endAlpha = 1;
                emitter2.angle = 0.7;
                emitter2.angleVar = 0.5;
                emitter2.life = 3000;
                emitter2.lifeVar = 1000;
 
                emitter2.addTo(game.scene.stage);
 
                game.scene.addEmitter(emitter2);
                game.scene.addTimer(5000, this.complete.bind(this));
                this.solver = new game.CollisionSolver(sheldon, pluck);
 
                if(this.solver.hitTest(sheldon,pluck))console.log('HIT');
            },
            update: function(){
                //text1: Q-key
                this._super();
               // if(this.solver.hitTest(this.sheldon, this.pluck))console.log('HIT');
                //this.emitter.target.set(this.sat.position.x, this.sat.position.y);
 
 
 
            },
            click: function() {
                currentEasing++;
                if (!easings[currentEasing]) currentEasing = 0;
                game.system.setScene('Main');
            },
            keydown: function(e){
 
 
                if (e.toString() == 'ENTER')game.system.setScene('Main');
                if (e.toString() == '1')game.system.pause(); // Pause game engine
                if (e.toString() == '2')game.system.resume();
            },
            complete: function() {
                // Timer complete
                game.system.stop();
            }
 
        });
 
 
 

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