Android Sprite Animation example

안드로이드 스프라이트 애니메이션 예, Part 02

앞서 작성된 파일은 여기를 참조하세요                                                                                               

Part 03 은 여기를 참조하세요

사용된 스프라이트 시트  

spritesheet.zip

res/layout/main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/linearLayout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content" >

        <Button
            android:id="@+id/button1"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:onClick="onBtnStart"
            android:layout_weight="1"
            android:text="Start Animation" />
        <Button
            android:id="@+id/button2"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:onClick="onBtnStop"
            android:layout_weight="1"
            android:text="Stop Animation" />
    </LinearLayout>
    
    <com.example.androidapp.SpriteView
	android:id="@+id/spriteView"
	android:layout_width="wrap_content"
	android:layout_height="wrap_content" />
</LinearLayout>

MainActivity.java

package com.example.androidapp;
import android.app.*;
import android.content.*;
import android.graphics.*;
import android.os.*;
import android.util.*;
import android.view.*;
import android.view.*;
import android.view.View.*;
import android.widget.*;

public class MainActivity extends Activity {

    boolean go;
    SpriteView spriteView;
	
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        spriteView = (SpriteView) findViewById(R.id.spriteView);
    }
    
    public void onBtnStart(View v) {
    	spriteView.startAnimation();
    }
    
    public void onBtnStop(View v){
    	spriteView.stopAnimation();
    }
    
}

SpriteView.java

package com.example.androidapp;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Rect;
import android.util.AttributeSet;
import android.view.View;

/* spritesheet.png (1440x1480), 5행6열 */
public class SpriteView extends View {
int frameWidth;
int frameHeight;
Bitmap spriteSheet = BitmapFactory.decodeResource(getResources(), R.drawable.spritesheet); 
	
Rect src = new Rect();
Rect dst = new Rect();
int x, y;
boolean go;
SpriteThread spriteThread;

public SpriteView(Context context) {
	super(context);
	init();
}

public SpriteView(Context context, AttributeSet attrs) {
	super(context, attrs);
	init();
}

private void init(){
	frameWidth = spriteSheet.getWidth()/6;
	frameHeight = spriteSheet.getHeight()/5;
	dst.left = dst.top = 0;
	dst.right = frameWidth;
	dst.bottom = frameHeight;
}

public void startAnimation() {
	go = true;
	spriteThread = new SpriteThread();
	spriteThread.start();
}

public void stopAnimation() {
	go = false;
	try {
		spriteThread.join();
	} catch (InterruptedException e) {
		e.printStackTrace();
	}
}

@Override
protected void onDraw(Canvas canvas) {
	super.onDraw(canvas);
	canvas.drawBitmap(spriteSheet,src, dst, null);
}
	
	/* Sprite Sheet에서 읽어와야할 프레임 이미지의 좌표를 계산하는 쓰레드 */
	public class SpriteThread extends Thread {
		
		int screenWidth, screenHeight;
		int speed = 5;
		
		@Override
		public void run() {
			screenWidth = getWidth();
			screenHeight = getHeight();
			
			while(go) {
				for(int i=0;i<5;i++) {
					for(int k=0;k<6;k++) {
						src.left = k*frameWidth;
						src.top = i*frameHeight;
						src.right = src.left+frameWidth;
						src.bottom = src.top+frameHeight;

						dst.left = x;
						dst.top = 0;
						dst.right = dst.left+frameWidth;
						dst.bottom = dst.top+frameHeight;
						postInvalidate();
						try {
							Thread.sleep(50);
						} catch (InterruptedException e) {
							e.printStackTrace();
						}
					}// end of inner for()
				}// end of outer for()
			}// end of while()
		}// end of run()
	}// end of class SpriteThread 
}