Ball implemented, started work on game AI

proto2/items/ball/ball.gd

@@ -0,0 +1,43 @@
+extends Item
+
+# Declare member variables here. Examples:
+# var a = 2
+# var b = "text"
+
+# Called when the node enters the scene tree for the first time.
+func _ready():
+	pass # Replace with function body.
+
+# Called every frame. 'delta' is the elapsed time since the previous frame.
+#func _process(delta):
+#	pass
+func _taken_act(pobj):
+	mode = RigidBody.MODE_KINEMATIC
+	collision_layer = 16
+	collision_mask = 16 | 2
+	get_parent().remove_child(self)
+	if pobj.is_in_group("characters"):
+		pobj.ball_carry.add_child(self)
+		transform = Transform()
+		pobj.item_right_hand = self
+		remove_from_group("activatable")
+	else:
+		pobj.add_child(self)
+		transform = Transform()
+	set_as_toplevel(false)
+	is_at_hands = true
+func _dropped_act(pobj):
+	._dropped_act(get_parent())
+	pobj.item_right_hand = null
+	add_to_group("activatable")
+
+func get_take_act():
+	return "Take ball"
+
+func get_drop_act():
+	return "Drop ball"
+
+func activate():
+	if is_at_hands:
+		dropped(world.master_node)
+	world.emit_signal("start_training", self)