Forums » Impact Engine » Sugestion: "Add seen function"

Its possible to create a function for entities like check(other), but this function its "seen" when the entity see other entitie do something

Seen (other){
	if(other.name == pj){
		do something!
	}
}

Like this!!! Its possible? :D

You could do a trace on the collision map from one entity to another. If the trace does not collide with the collision map, they can see each other.

E.g., if you want to check in an enemy entity if it can see the player entity:

update: function() {
	var player = ig.game.player;
	var res = ig.game.collisionMap.trace( 
		this.pos.x, this.pos.y, // start
		this.pos.x - player.pos.x, this.pos.y - player.pos.y, // dir
		1, 1 // size
	);
	
	if( !res.collision.x && !res.collision.x && !res.collision.slope ) {
		// this entity can see the player
	}
	
	this.parent();
},

(This assumes that you saved a reference to the player entity in ig.game and that the game has a CollisionMap)

Great snippet! ;)

+ 1