Collision Issue (New to phaser)

[jesmaail]

I'd like to preface this post by apologising, I'm new to Phaser so the issue could be really simple and I'm not seeing it.

 

Scene.Game.prototype = {		create: function() {				this.game.physics.startSystem(Phaser.Physics.ARCADE);				this.player = this.game.add.sprite(200 - 23, 540, "ship");		this.game.physics.enable(this.player, Phaser.Physics.ARCADE);		this.player.body.collideWorldBounds = true;				this.cursors = this.game.input.keyboard.createCursorKeys();						this.x = 0;	},		update: function(){		this.player.body.velocity.x = 0;						if(this.cursors.left.isDown){			this.player.body.velocity.x = -350;		}else if(this.cursors.right.isDown){			this.player.body.velocity.x = 350;		}				if(this.x % 20 ==0){					sprites = this.game.add.group();			this.enemies = sprites.create(this.game.rnd.integerInRange(0, 400), 0, 'asteroid');			this.game.physics.enable(this.enemies, Phaser.Physics.ARCADE);			this.enemies.body.immovable = true;			this.enemies.body.velocity.y = 350;				//this.enemies.body.allowGravity = false;		}				this.x = this.x + 1;						//this.game.physics.arcade.overlap(this.player, this.enemies, this.game.state.start('Death'), null, this);		//this.game.physics.arcade.collide(this.player, this.sprites, this.collision, null, this);			},		collision: function(obj1, obj2){		this.game.state.start('Death');	}		};

Using the overlap line, it goes to 'Death' state immediately, with no collision taking place.
Using the Collide line, nothing happens even when I cause a collision.

As I said, this may just be something catastrophically easy that I'm overlooking.

Thanks for reading

[lewster32]

Possibly a scope issue? Try this see if it works:

this.game.physics.arcade.collide(this.player, this.sprites, function(obj1, obj2) { this.game.state.start('Death'); }, null, this);

Or if not, try this:

var self = this;this.game.physics.arcade.collide(this.player, this.sprites, function(obj1, obj2) { self.game.state.start('Death'); }, null, this);

[j0hnskot]

in the collision check , you check for this.sprites. this.sprites does not exist, it is local on the update function You must create a variable this.sprites.

As for the overlap check you use this.game.state.start('Death') which immediatly gets called because it is a function call and not just a function name.

 

So, define the this.sprites variable on create( move the sprites = this.game.add.group(); to create as this.sprites = this.game.add.group(); ) and then use the first example Lewster wrote. It should work i guess.

[lewster32]

Ah well spotted, I didn't see that.

[jesmaail]

Problem solved, thank you very much