FloatAction.java

/*******************************************************************************
 * 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;

/**
 * An action that has a float, whose value is transitioned over time.
 * 
 * @author Nathan Sweet
 */
public class FloatAction extends TemporalAction {
	private float start, end;
	private float value;

	/** Creates a FloatAction that transitions from 0 to 1. */
	public FloatAction() {
		start = 0;
		end = 1;
	}

	/** Creates a FloatAction that transitions from start to end. */
	public FloatAction(float start, float end) {
		this.start = start;
		this.end = end;
	}

	protected void begin() {
		value = start;
	}

	protected void update(float percent) {
		value = start + (end - start) * percent;
	}

	/** Gets the current float value. */
	public float getValue() {
		return value;
	}

	/** Sets the current float value. */
	public void setValue(float value) {
		this.value = value;
	}

	public float getStart() {
		return start;
	}

	/** Sets the value to transition from. */
	public void setStart(float start) {
		this.start = start;
	}

	public float getEnd() {
		return end;
	}

	/** Sets the value to transition to. */
	public void setEnd(float end) {
		this.end = end;
	}
}