Implement tween for turning left

Bugs :
- Rotating to the other direction when below 0 degrees
- Problem with collision

CharTween.gd

@@ -1,5 +1,7 @@
 extends Tween
 
+var duration = 0.75
+
 # Called when the node enters the scene tree for the first time.
 func _ready():
 	pass # Replace with function body.
@@ -9,6 +11,11 @@ func connect_into(o):
 	pass
 
 func move_char(c, t_pos):
-	interpolate_property(c, "position", c.get_position(), t_pos, 0.75, Tween.TRANS_LINEAR, Tween.EASE_IN)
+	interpolate_property(c, "position", c.get_position(), t_pos, duration, Tween.TRANS_LINEAR, Tween.EASE_IN)
+	start()
+	pass
+
+func rotate_char(c, t_rot):
+	interpolate_property(c, "rotation_degrees", c.rotation_degrees, t_rot, duration, Tween.TRANS_LINEAR, Tween.EASE_IN)
 	start()
 	pass

Player.gd

@@ -53,16 +53,18 @@ func _ready():
 func _physics_process(delta):
 
 	if Input.is_action_pressed("ui_left"):
-		dire -= 1
-		if dire < 0:
-			dire = 3
-		update_avatar_dir()
+		if !is_moving:
+			dire -= 1
+			if dire < 0:
+				dire = 3
+
+			tween.rotate_char(self, DEG_LIST[dire])
+			is_moving = true
 
 	elif Input.is_action_pressed("ui_right"):
 		dire += 1
 		if dire > 3:
 			dire = 0
-		update_avatar_dir()
 
 	if Input.is_action_pressed("ui_up"):