Andengine - Bài 21 lập trình game andengine cơ bản - Muntitouch trong an...

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Hôm nay mình sẽ hướng dẫn các bạn thao tác với màn hình cảm ứng đã điểm trong game android bằng thư viện andengie.

Các ảnh cần trong bài này :

face_box



Control_base



Knob control



Video hướng dẫn : (Like và chia sẻ ủng hộ mình nha !)



Bài này code đơn giản nên các bạn tự tạo project nha !
Thư viện : : DOWNLOAD HERE


Code MainActivity.class

package com.example.andenginemuntitouch;

import javax.microedition.khronos.opengles.GL10;

import org.anddev.andengine.engine.Engine;
import org.anddev.andengine.engine.camera.Camera;
import org.anddev.andengine.engine.camera.hud.controls.AnalogOnScreenControl;
import org.anddev.andengine.engine.camera.hud.controls.BaseOnScreenControl;
import org.anddev.andengine.engine.camera.hud.controls.AnalogOnScreenControl.IAnalogOnScreenControlListener;
import org.anddev.andengine.engine.handler.physics.PhysicsHandler;
import org.anddev.andengine.engine.options.EngineOptions;
import org.anddev.andengine.engine.options.EngineOptions.ScreenOrientation;
import org.anddev.andengine.engine.options.resolutionpolicy.RatioResolutionPolicy;
import org.anddev.andengine.entity.scene.Scene;
import org.anddev.andengine.entity.scene.background.ColorBackground;
import org.anddev.andengine.entity.sprite.Sprite;
import org.anddev.andengine.entity.util.FPSLogger;
import org.anddev.andengine.extension.input.touch.controller.MultiTouch;
import org.anddev.andengine.extension.input.touch.controller.MultiTouchController;
import org.anddev.andengine.extension.input.touch.exception.MultiTouchException;
import org.anddev.andengine.opengl.texture.Texture;
import org.anddev.andengine.opengl.texture.TextureOptions;
import org.anddev.andengine.opengl.texture.region.TextureRegion;
import org.anddev.andengine.opengl.texture.region.TextureRegionFactory;
import org.anddev.andengine.ui.activity.BaseGameActivity;
import org.anddev.andengine.util.MathUtils;

import android.widget.Toast;

public class MainActivity extends BaseGameActivity {
 
 private static final int CAMERA_WIDTH = 480;
 private static final int CAMERA_HEIGHT = 320;

 // ===========================================================
 private Camera mCamera;

 private Texture mTexture;
 private TextureRegion mFaceTextureRegion;

 private Texture mOnScreenControlTexture;
 private TextureRegion mOnScreenControlBaseTextureRegion;
 private TextureRegion mOnScreenControlKnobTextureRegion;

 

 @Override
 public Engine onLoadEngine() {
  this.mCamera = new Camera(0, 0, CAMERA_WIDTH, CAMERA_HEIGHT);
  // khai báo sử dụng đa điểm trong app
  final Engine engine = new Engine(new EngineOptions(true, ScreenOrientation.LANDSCAPE,
    new RatioResolutionPolicy(CAMERA_WIDTH, CAMERA_HEIGHT), this.mCamera));
  try {
   if (MultiTouch.isSupported(this)) {
    engine.setTouchController(new MultiTouchController());
    if (MultiTouch.isSupportedDistinct(this)) {
     Toast.makeText(this, "Cảm ứng đa điểm - các điều khiển hoạt động tốt!", Toast.LENGTH_LONG).show();
    } else {
     Toast.makeText(this, "MultiTouch detected, but your device has problems " +
       "distinguishing between fingers.\n\nControls are placed at different vertical" +
       " locations.", Toast.LENGTH_LONG).show();
    }
   } else {
    Toast.makeText(this, "Sorry your device does NOT support MultiTouch!\n\n(Falling back to SingleTouch.)" +
      "\n\nControls are placed at different vertical locations.", Toast.LENGTH_LONG).show();
   }
  } catch (final MultiTouchException e) {
   Toast.makeText(this, "Bản android này không hỗ trợ đa điểm!\n\n(Chỉ sử dụng đơn điểm.)\n\nChỉ sử " +
     "dụng được một điều khiểu trong một thời điểm.", Toast.LENGTH_LONG).show();
  }

  return engine;

 }

 @Override
 public void onLoadResources() {
  
  TextureRegionFactory.setAssetBasePath("gfx/");

  this.mTexture = new Texture(32, 32, TextureOptions.BILINEAR_PREMULTIPLYALPHA);
  this.mFaceTextureRegion = TextureRegionFactory.createFromAsset(this.mTexture, this, "face_box.png", 0, 0);

  this.mOnScreenControlTexture = new Texture(256, 128, TextureOptions.BILINEAR_PREMULTIPLYALPHA);
  this.mOnScreenControlBaseTextureRegion = TextureRegionFactory.createFromAsset(this.mOnScreenControlTexture,
    this, "onscreen_control_base.png", 0, 0);
  this.mOnScreenControlKnobTextureRegion = TextureRegionFactory.createFromAsset(this.mOnScreenControlTexture,
    this, "onscreen_control_knob.png", 128, 0);

  this.mEngine.getTextureManager().loadTextures(this.mTexture, this.mOnScreenControlTexture);
  
  
 }

 @Override
 public Scene onLoadScene() {
  this.mEngine.registerUpdateHandler(new FPSLogger());
  
  final Scene scene = new Scene();
  scene.setBackground(new ColorBackground(0.09804f, 0.6274f, 0.8784f));

  final int centerX = (CAMERA_WIDTH - this.mFaceTextureRegion.getWidth()) / 2;
  final int centerY = (CAMERA_HEIGHT - this.mFaceTextureRegion.getHeight()) / 2;
  final Sprite face = new Sprite(centerX, centerY, this.mFaceTextureRegion);
  
  final PhysicsHandler physicsHandler = new PhysicsHandler(face);
  face.registerUpdateHandler(physicsHandler);

  face.setScale(4);
  scene.attachChild(face);

  /* Velocity control (left). */
  final int x1 = 0;
  final int y1 = CAMERA_HEIGHT - this.mOnScreenControlBaseTextureRegion.getHeight();
  final AnalogOnScreenControl velocityOnScreenControl = new AnalogOnScreenControl(x1, y1, this.mCamera,
    this.mOnScreenControlBaseTextureRegion, this.mOnScreenControlKnobTextureRegion, 0.1f, 
    new IAnalogOnScreenControlListener() {
   @Override
   public void onControlChange(final BaseOnScreenControl pBaseOnScreenControl, final float pValueX,
     final float pValueY) {
    physicsHandler.setVelocity(pValueX * 100, pValueY * 100);
   }

   @Override
   public void onControlClick(final AnalogOnScreenControl pAnalogOnScreenControl) {
    /* Nothing. */
   }
  });
  velocityOnScreenControl.getControlBase().setBlendFunction(GL10.GL_SRC_ALPHA, GL10.GL_ONE_MINUS_SRC_ALPHA);
  velocityOnScreenControl.getControlBase().setAlpha(0.5f);

  scene.setChildScene(velocityOnScreenControl);

  /* Rotation control (right). */
  // final int y2 =
  // (this.mPlaceOnScreenControlsAtDifferentVerticalLocations) ? 0 : y1;
  final int y2 = CAMERA_HEIGHT - 100;
  final int x2 = CAMERA_WIDTH - this.mOnScreenControlBaseTextureRegion.getWidth();
  final AnalogOnScreenControl rotationOnScreenControl = new AnalogOnScreenControl(x2, y2, this.mCamera, 
    this.mOnScreenControlBaseTextureRegion, this.mOnScreenControlKnobTextureRegion, 0.1f, new IAnalogOnScreenControlListener() {
   @Override
   public void onControlChange(final BaseOnScreenControl pBaseOnScreenControl, final float pValueX,
     final float pValueY) {
    if (pValueX == x1 && pValueY == x1) {
     face.setRotation(x1);
    } else {
     face.setRotation(MathUtils.radToDeg((float) Math.atan2(pValueX, -pValueY)));
    }
   }

   @Override
   public void onControlClick(final AnalogOnScreenControl pAnalogOnScreenControl) {
    /* Nothing. */
   }
  });
  rotationOnScreenControl.getControlBase().setBlendFunction(GL10.GL_SRC_ALPHA, GL10.GL_ONE_MINUS_SRC_ALPHA);
  rotationOnScreenControl.getControlBase().setAlpha(0.5f);

  velocityOnScreenControl.setChildScene(rotationOnScreenControl);

  return scene;
 }

 @Override
 public void onLoadComplete() {
  // TODO Auto-generated method stub
  
 }


}