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Spine Runtime for libGDX
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/******************************************************************************
 * Spine Runtimes Software License v2.5
 *
 * Copyright (c) 2013-2016, Esoteric Software
 * All rights reserved.
 *
 * You are granted a perpetual, non-exclusive, non-sublicensable, and
 * non-transferable license to use, install, execute, and perform the Spine
 * Runtimes software and derivative works solely for personal or internal
 * use. Without the written permission of Esoteric Software (see Section 2 of
 * the Spine Software License Agreement), you may not (a) modify, translate,
 * adapt, or develop new applications using the Spine Runtimes or otherwise
 * create derivative works or improvements of the Spine Runtimes or (b) remove,
 * delete, alter, or obscure any trademarks or any copyright, trademark, patent,
 * or other intellectual property or proprietary rights notices on or in the
 * Software, including any copy thereof. Redistributions in binary or source
 * form must include this license and terms.
 *
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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 * EVENT SHALL ESOTERIC SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 *****************************************************************************/

package com.esotericsoftware.spine.utils;

import com.badlogic.gdx.graphics.Color;
import com.badlogic.gdx.graphics.g2d.Batch;
import com.badlogic.gdx.scenes.scene2d.Actor;
import com.esotericsoftware.spine.AnimationState;
import com.esotericsoftware.spine.Skeleton;
import com.esotericsoftware.spine.SkeletonRenderer;

/** A scene2d actor that draws a skeleton. */
public class SkeletonActor extends Actor {
	private SkeletonRenderer renderer;
	private Skeleton skeleton;
	AnimationState state;

	/** Creates an uninitialized SkeletonActor. The renderer, skeleton, and animation state must be set before use. */
	public SkeletonActor () {
	}

	public SkeletonActor (SkeletonRenderer renderer, Skeleton skeleton, AnimationState state) {
		this.renderer = renderer;
		this.skeleton = skeleton;
		this.state = state;
	}

	public void act (float delta) {
		state.update(delta);
		state.apply(skeleton);
		skeleton.updateWorldTransform();
		super.act(delta);
	}

	public void draw (Batch batch, float parentAlpha) {
		Color color = skeleton.getColor();
		float oldAlpha = color.a;
		skeleton.getColor().a *= parentAlpha;

		skeleton.setPosition(getX(), getY());
		renderer.draw(batch, skeleton);

		color.a = oldAlpha;
	}

	public SkeletonRenderer getRenderer () {
		return renderer;
	}

	public void setRenderer (SkeletonRenderer renderer) {
		this.renderer = renderer;
	}

	public Skeleton getSkeleton () {
		return skeleton;
	}

	public void setSkeleton (Skeleton skeleton) {
		this.skeleton = skeleton;
	}

	public AnimationState getAnimationState () {
		return state;
	}

	public void setAnimationState (AnimationState state) {
		this.state = state;
	}
}