/
MenuScene.java
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/
MenuScene.java
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package org.andengine.entity.scene.menu;
import java.util.ArrayList;
import java.util.Iterator;
import org.andengine.engine.camera.Camera;
import org.andengine.entity.scene.CameraScene;
import org.andengine.entity.scene.IOnAreaTouchListener;
import org.andengine.entity.scene.IOnSceneTouchListener;
import org.andengine.entity.scene.ITouchArea;
import org.andengine.entity.scene.Scene;
import org.andengine.entity.scene.menu.animator.IMenuAnimator;
import org.andengine.entity.scene.menu.item.IMenuItem;
import org.andengine.input.touch.TouchEvent;
import android.view.MotionEvent;
/**
* (c) 2010 Nicolas Gramlich
* (c) 2011 Zynga Inc.
*
* @author Nicolas Gramlich
* @since 20:06:51 - 01.04.2010
*/
public class MenuScene extends CameraScene implements IOnAreaTouchListener, IOnSceneTouchListener {
// ===========================================================
// Constants
// ===========================================================
// ===========================================================
// Fields
// ===========================================================
protected final ArrayList<IMenuItem> mMenuItems = new ArrayList<IMenuItem>();
private IOnMenuItemClickListener mOnMenuItemClickListener;
private IMenuAnimator mMenuAnimator = IMenuAnimator.DEFAULT;
private IMenuItem mSelectedMenuItem;
// ===========================================================
// Constructors
// ===========================================================
public MenuScene() {
this(null, null);
}
public MenuScene(final IOnMenuItemClickListener pOnMenuItemClickListener) {
this(null, pOnMenuItemClickListener);
}
public MenuScene(final Camera pCamera) {
this(pCamera, null);
}
public MenuScene(final Camera pCamera, final IOnMenuItemClickListener pOnMenuItemClickListener) {
super(pCamera);
this.mOnMenuItemClickListener = pOnMenuItemClickListener;
this.setOnSceneTouchListener(this);
this.setOnAreaTouchListener(this);
}
// ===========================================================
// Getter & Setter
// ===========================================================
public IOnMenuItemClickListener getOnMenuItemClickListener() {
return this.mOnMenuItemClickListener;
}
public void setOnMenuItemClickListener(final IOnMenuItemClickListener pOnMenuItemClickListener) {
this.mOnMenuItemClickListener = pOnMenuItemClickListener;
}
public int getMenuItemCount() {
return this.mMenuItems.size();
}
public void addMenuItem(final IMenuItem pMenuItem) {
this.mMenuItems.add(pMenuItem);
this.attachChild(pMenuItem);
this.registerTouchArea(pMenuItem);
}
public void clearMenuItems() {
for (int i = mMenuItems.size() - 1; i >= 0; i--) {
IMenuItem menuitem = mMenuItems.remove(i);
detachChild(menuitem);
unregisterTouchArea(menuitem);
}
}
@Override
public MenuScene getChildScene() {
return (MenuScene)super.getChildScene();
}
@Override
public void setChildScene(final Scene pChildScene, final boolean pModalDraw, final boolean pModalUpdate, final boolean pModalTouch) throws IllegalArgumentException {
if(pChildScene instanceof MenuScene) {
super.setChildScene(pChildScene, pModalDraw, pModalUpdate, pModalTouch);
} else {
throw new IllegalArgumentException("MenuScene accepts only MenuScenes as a ChildScene.");
}
}
@Override
public void clearChildScene() {
if(this.getChildScene() != null) {
this.getChildScene().reset();
super.clearChildScene();
}
}
public void setMenuAnimator(final IMenuAnimator pMenuAnimator) {
this.mMenuAnimator = pMenuAnimator;
}
// ===========================================================
// Methods for/from SuperClass/Interfaces
// ===========================================================
@Override
public boolean onAreaTouched(final TouchEvent pSceneTouchEvent, final ITouchArea pTouchArea, final float pTouchAreaLocalX, final float pTouchAreaLocalY) {
final IMenuItem menuItem = ((IMenuItem)pTouchArea);
switch(pSceneTouchEvent.getAction()) {
case MotionEvent.ACTION_DOWN:
case MotionEvent.ACTION_MOVE:
if(this.mSelectedMenuItem != null && this.mSelectedMenuItem != menuItem) {
this.mSelectedMenuItem.onUnselected();
}
this.mSelectedMenuItem = menuItem;
this.mSelectedMenuItem.onSelected();
break;
case MotionEvent.ACTION_UP:
if(this.mOnMenuItemClickListener != null) {
final boolean handled = this.mOnMenuItemClickListener.onMenuItemClicked(this, menuItem, pTouchAreaLocalX, pTouchAreaLocalY);
menuItem.onUnselected();
this.mSelectedMenuItem = null;
return handled;
}
break;
case MotionEvent.ACTION_CANCEL:
menuItem.onUnselected();
this.mSelectedMenuItem = null;
break;
}
return true;
}
@Override
public boolean onSceneTouchEvent(final Scene pScene, final TouchEvent pSceneTouchEvent) {
if(this.mSelectedMenuItem != null) {
this.mSelectedMenuItem.onUnselected();
this.mSelectedMenuItem = null;
}
return false;
}
@Override
public void back() {
super.back();
this.reset();
}
@Override
public void reset() {
super.reset();
final ArrayList<IMenuItem> menuItems = this.mMenuItems;
for(int i = menuItems.size() - 1; i >= 0; i--) {
menuItems.get(i).reset();
}
this.prepareAnimations();
}
// ===========================================================
// Methods
// ===========================================================
public void closeMenuScene() {
this.back();
}
public void buildAnimations() {
this.prepareAnimations();
final float cameraWidthRaw = this.mCamera.getWidthRaw();
final float cameraHeightRaw = this.mCamera.getHeightRaw();
this.mMenuAnimator.buildAnimations(this.mMenuItems, cameraWidthRaw, cameraHeightRaw);
}
public void prepareAnimations() {
final float cameraWidthRaw = this.mCamera.getWidthRaw();
final float cameraHeightRaw = this.mCamera.getHeightRaw();
this.mMenuAnimator.prepareAnimations(this.mMenuItems, cameraWidthRaw, cameraHeightRaw);
}
// ===========================================================
// Inner and Anonymous Classes
// ===========================================================
public static interface IOnMenuItemClickListener {
// ===========================================================
// Constants
// ===========================================================
// ===========================================================
// Methods
// ===========================================================
public boolean onMenuItemClicked(final MenuScene pMenuScene, final IMenuItem pMenuItem, final float pMenuItemLocalX, final float pMenuItemLocalY);
}
}