Made particles emit from resource

data/buildings/basic/harvester/harvester_particles.gd

@@ -0,0 +1,37 @@
+extends Node2D
+
+var _pickup
+
+var _distance
+var _direction
+var _emitters: Array[CPUParticles2D] = []
+
+func init(distance: float, direction: Vector2, res: GameResource) -> void:
+	_distance = distance
+	_direction = direction
+	_pickup = res
+
+func _ready() -> void:
+	if _emitters.size() < 10:
+		var particles = CPUParticles2D.new()
+		particles.amount = 8
+		particles.spread = 8
+		particles.material = ParticleProcessMaterial.new()
+		particles.radial_accel_max = _distance * -2.5
+		particles.radial_accel_min = _distance * -2.55
+		particles.gravity = Vector2.ZERO
+		particles.direction = _direction
+		particles.initial_velocity_max = _distance * 2.25
+		particles.initial_velocity_min = _distance * 2.2
+		particles.lifetime = 1.65
+		add_child(particles)
+		_emitters.append(particles)
+	else:
+		for i in range(1, _emitters.size()):
+			_emitters[i].queue_free()
+		_emitters.resize(1)
+		ResourceManager.pickup(_pickup)
+
+
+func _on_particles_timer_timeout() -> void:
+	_ready()