distanceBetween group, sprite?

[Boxtufty]

Hey.

I want to trigger different events depending on the distance between a member of a group (enemies) and my avatar (player). Basically, I want the enemy to 'aggro' if it's < 200 distance, and 'kill' my player if the distance is < 50. I tried to achieve this with 'arcade.overlap()' and 'arcade.collide()' but I can't seem to trigger different events based on the 'depth of the collision' (offset?).

var game = new Phaser.Game(640, 960, Phaser.AUTO, '', { preload: preload, create: create, update: update});// GLOBALSvar enemies;var robot;var player;var text;var counter = 0;var xPos; // randomly generated x coordinate of robotfunction preload() {	game.load.image('player', 'assets/laserpoint.png');	game.load.image('robot', 'assets/tewst.png');	}function create() {	    game.physics.startSystem(Phaser.Physics.ARCADE);			// ENEMIES GROUP	enemies = game.add.group();	enemies.enableBody = true;	enemies.physicsBodyType = Phaser.Physics.ARCADE;	enemies.createMultiple(20,'robot');			// PLAYER AVATAR	player = game.add.sprite(game.world.width/2,game.world.height /2,'player');	game.physics.enable(player, Phaser.Physics.ARCADE);	player.anchor.setTo(0.5);		// COUNTER ++ IF COLLISION OCCURS	text = game.add.text(game.world.centerX, game.world.centerY - 300, 'Counter: 0', 	{ font: "64px Arial", fill: "#ffffff", align: "center" });    text.anchor.setTo(0.5, 0.5);		// LOOPED TIMER SPAWNS MOB	this.timer = this.game.time.events.loop(500, spawn, this); }function update() {		// PROBLEM	if (game.physics.arcade.distanceBetween(enemies,player) < 100) { text.setText('Counter: ' + counter); counter++; }	// I've tried (robot,player) too, no luck.	}	// SPAWNS ENEMY ROBOT AT RANDOM X COORDINATEfunction spawn() {		xPos = game.rnd.integerInRange(1,510);		robot = enemies.getFirstExists(false);	if(robot){	robot.reset(xPos,200);	robot.body.velocity.y = 200;	robot.anchor.setTo(0.5);	}}

[rich]

distanceBetween is for checking the distance of 2 Sprites. Although you can pass in a Group, the Group x/y coordinates are likely to still be 0,0 unless you've changed them (which you haven't in the code above). So you're always checking the distance between the sprite and 0,0 - hence the weird results.

 

You need to either select a specific object in your Group for the test, or maybe loop through all of the children in the group and average out their coordinates and compare against that instead.

[Boxtufty]

Thanks for the reply, sorry I am a beginner and unable to comprehend some of what you said. 

 

How can I manipulate individual sprites in the group? When I spawn them I can set a velocity etc, but once they are let loose on the world, how can I refer to a specific enemy? The variable it was assigned to on creation has since been 'overwritten'(?) ...

[rich]

Group.getAt, Group.getTop, Group.getBottom, Group.getRandom, Group.getFirstExists, Group.getFirstDead, Group.getFirstAlive.

 

You get the picture

[Boxtufty]

Oh okay thanks.