/*******************************************************************************
* Copyright 2011 See AUTHORS file.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
* an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
* specific language governing permissions and limitations under the License.
******************************************************************************/
package com.badlogic.gdx.scenes.scene2d.actions;
/**
* Base class for actions that transition over time using the percent complete since the last frame.
*
* @author Nathan Sweet
*/
abstract public class RelativeTemporalAction extends TemporalAction {
private float lastPercent;
protected void begin() {
lastPercent = 0;
}
protected void update(float percent) {
updateRelative(percent - lastPercent);
lastPercent = percent;
}
abstract protected void updateRelative(float percentDelta);
}