/* * Copyright (c) 2003-2008 jMonkeyEngine * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * * Neither the name of 'jMonkeyEngine' nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ package animation; import java.awt.Point; import java.nio.FloatBuffer; import java.util.ArrayList; import com.jme.math.Vector2f; import com.jme.scene.Controller; import com.jme.scene.TexCoords; import com.jme.scene.shape.Quad; import com.jme.util.geom.BufferUtils; public class SpriteAnimation { private String name; private ArrayList frames; private int frameDimension = 256; private int textureDimension = 2048; private Point startFrame; private final FloatBuffer texCoords = BufferUtils.createVector2Buffer(4); private int currentFrame; private int numberOfFrames; private float interval; private float speed = .025f; private boolean forward; private Quad quad; private int textureWidth, textureHeight; public SpriteAnimation(String name) { this.name = name; } public SpriteAnimation(String name, Quad quad, Point startFrame, int numberOfFrames) { this.name = name; this.quad = quad; this.startFrame = startFrame; this.numberOfFrames = numberOfFrames; frames = new ArrayList (numberOfFrames); interval = 0; currentFrame = 0; forward = true; buildAnimation(); } private void buildAnimation() { for(int i = startFrame.y; i < textureDimension - frameDimension; i += frameDimension) { for(int j = startFrame.x; j < textureDimension - frameDimension; j+= frameDimension) { if(numberOfFrames > 0) { addFrame(new SpriteFrame( convertToUV(i, j), //northWest convertToUV(i+frameDimension, j), //southWest convertToUV(i+frameDimension, j+frameDimension), //southEast convertToUV(i, j+frameDimension))); //northEast numberOfFrames--; } } } } private Vector2f convertToUV(int y, int x) { Vector2f coords = new Vector2f(); coords.x = (float) x / textureDimension; coords.y = 1f - (float) y / textureDimension; return coords; } private void addFrame(SpriteFrame frame) { frames.add(frame); } private void swapFrame() { texCoords.clear(); SpriteFrame frame = frames.get(currentFrame); texCoords.put(frame.northWest().x).put(frame.northWest().y); texCoords.put(frame.southWest().x).put(frame.southWest().y); texCoords.put(frame.southEast().x).put(frame.southEast().y); texCoords.put(frame.northEast().x).put(frame.northEast().y); quad.setTextureCoords(new TexCoords(texCoords)); } public void addFrames(ArrayList frames) { for(int i = 0; i < frames.size() - 1; i ++) { this.addFrame(frames.get(i)); } } public void update(int repeatType, float time) { interval += time; if (interval >= speed) { interval = 0.0f; if (forward) currentFrame++; else currentFrame--; if (currentFrame < 0) { if(repeatType == SpriteController.RT_REVERSE) currentFrame = frames.size() - 1; else { currentFrame = 0; forward = true; } } else if (currentFrame == frames.size() - 1) { switch (repeatType) { case Controller.RT_CLAMP: currentFrame = frames.size() - 1; break; case Controller.RT_CYCLE: currentFrame -= 2; forward = false; break; case Controller.RT_WRAP: currentFrame = 0; forward = true; break; case SpriteController.RT_REVERSE: currentFrame--; forward = false; break; } } swapFrame(); } } public void setSpeed(float speed) { this.speed = speed; } public String getName() { return name; } public String toString() { String output = ""; for(int i = 0; i < frames.size() - 1; i++) { output += frames.get(i).northWest().x; output += ", "; output += frames.get(i).northWest().y; output += ", "; } return output; } }