Forums » Help » Stick 'bullet' to entity?

I'm making a game where you 'shoot' buttons at snowmen... and I need to be able to have the buttons stick to the snowmen. The snowmen entities move and such... so once a button hits I essentially want the button to become part of the snowman. I don't see any entity.attachEntity() method... is there something like this?

No there isn't. You could add grab functionality to your snowmen that is triggered when a button overlaps (check: function(other)) or collides (collideWith: function(other, axis) with them. Then (untested):

// snowman.js

children: [],

grab: function(other)
{
	// Prevent further checks and collisions
	other.type = ig.Entity.TYPE.NONE;
	other.collides = ig.Entity.COLLIDES.NEVER;
	
	// Other will no longer respond to game physics
	other.update = (function(){}).bind(other);
	
	// Maintain some kind of offset
	other.parentOffset = {
		x: other.pos.x - this.pos.x,
		y: other.pos.y - this.pos.y
	};
	
	// Add to our grabbed buttons
	this.children.push(other);
},

update: function()
{
	this.parent();
	
	for (var i=0; i<this.children.length; i++)
	{
		var c = this.children[i];
		c.pos.x = this.pos.x + c.parentOffset.x;
		c.pos.y = this.pos.y + c.parentOffset.y;
	}
}

Perfect, I'll give that a go. Thanks again!