Refactor rhythm action architecture

scenes/components/motion_executor.gd

@@ -0,0 +1,40 @@
+class_name MotionExecutor
+extends Node
+
+signal motion_started(action: Resource)
+signal motion_finished(action: Resource)
+
+var current_action: Resource
+var velocity := Vector2.ZERO
+var duration := 0.0
+var elapsed := 0.0
+var active := false
+
+
+func execute(action: Resource, direction: Vector2, beat_time: float, speed := 220.0) -> void:
+	current_action = action
+	duration = maxf(0.01, float(action.get("action_beats")) * maxf(0.01, beat_time))
+	elapsed = 0.0
+	active = true
+	var move_x := float(action.get("move_mult_x"))
+	if move_x == 0.0:
+		move_x = -1.0 if StringName(str(action.get("displacement"))) == &"left" else 1.0 if StringName(str(action.get("displacement"))) == &"right" else 0.0
+	velocity = Vector2(direction.x if direction.x != 0.0 else move_x, direction.y).normalized() * speed if move_x != 0.0 or direction != Vector2.ZERO else Vector2.ZERO
+	motion_started.emit(action)
+
+
+func tick(delta: float) -> Vector2:
+	if not active:
+		return Vector2.ZERO
+	elapsed += delta
+	if elapsed >= duration:
+		active = false
+		velocity = Vector2.ZERO
+		motion_finished.emit(current_action)
+	return velocity
+
+
+func cancel() -> void:
+	active = false
+	velocity = Vector2.ZERO
+	current_action = null