SpaceRock/objects/obj_GRcore/Step_0.gml

if mouse_check_button_pressed(mb_left)
{
	var ddeg = random(40);
	for(var i = 0; i < 9; i++)
	{
		var deg = i * 40 + ddeg;
		var dx = mouse_x + r * cos(degtorad(deg));
		var dy = mouse_y + r * sin(degtorad(deg));
		var inst = instance_create_layer(dx, dy, "Instances", obj_arrow);
		inst.cnt = 10;
		inst.image_angle = -deg;
		inst = instance_create_layer(dx, dy, "Instances", obj_rock_shield);
		inst.image_angle = -deg;
	}
}