Android Game example, Explosion
미사일이 적기에 명중하면 폭발 애니메이션이 나타나고 관련 적기와 미사일이 사라지는 효과의 예
GameState.java
package game.framework;
import java.util.ArrayList;
import android.graphics.*;
import android.util.*;
import android.view.KeyEvent;
import android.view.MotionEvent;
public class GameState implements IState {
Background background;
BackgroundClouds clouds;
Airplane airplane;
GameKeyPad keyPad;
EnemyPlane enemyPlane;
SpriteAnimation expAni;
boolean isCollided;
public GameState() {
keyPad = new GameKeyPad();
airplane = new Airplane();
airplane.init();
enemyPlane = new EnemyPlane();
enemyPlane.inuse = true;
background = new Background();
clouds = new BackgroundClouds();
expAni = new SpriteAnimation(AppManager.getInstance().getBitmap(R.drawable.explosion_transparent));
expAni.initSpriteData(4, 4, expAni.bitmap.getWidth()/4, expAni.bitmap.getHeight()/4,
16, 16);
}
@Override
public void init() { }
@Override
public void destroy() { }
@Override
public void update() {
background.update();
clouds.update();
airplane.update();
if(enemyPlane.inuse) enemyPlane.update();
collisionCheck();
if(isCollided) expAni.update(System.currentTimeMillis()); // 수정요구됨
}
@Override
public void render(Canvas canvas) {
background.draw(canvas);
clouds.draw(canvas);
airplane.draw(canvas);
if(enemyPlane.inuse) enemyPlane.draw(canvas);
if(isCollided) expAni.draw(canvas); // 수정요구됨
if(expAni.currentFrame==expAni.cntOfFrames-1) isCollided = false;
keyPad.draw(canvas);
}
public void collisionCheck() {
ArrayList<EnemyPlane> enemyList = AppManager.getInstance().enemyList;
ArrayList<Missile> misList = airplane.misList;
int enemyCnt = enemyList.size();
for(int i=0;i<misList.size();i++) {
if(!misList.get(i).inuse) continue;
for(int k=0;k<enemyCnt;k++) {
if(!enemyList.get(k).inuse) continue;
if(misList.get(i).rect.intersect(enemyList.get(k).rect)) {
// 충돌탐지/충돌위치에 폭발애니 출력/적기, 미사일 안보이게 처리
expAni.setPosition(misList.get(i).x-expAni.spriteWidth/2,
misList.get(i).y-expAni.spriteHeight/2-20);
misList.get(i).inuse = false;
enemyList.get(i).inuse = false;
isCollided = true;
return;
}
}
}
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
return false;
}
@Override
public boolean onTouchEvent(MotionEvent event) {
return keyPad.onTouchEvent(event);
}
}
Missile.java
package game.framework;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Rect;
public class Missile extends GraphicObject {
int speedX, speedY;
int bitmapHeight;
boolean inuse;
Rect rect = new Rect();
public Missile() {
super(AppManager.getInstance().getBitmap(R.drawable.missile));
bitmapHeight = bitmap.getHeight();
}
public Missile(Bitmap bitmap) {
super(bitmap);
}
public void setSpeed(int speedX, int speedY) {
this.speedX = speedX;
this.speedY = speedY;
}
public void update() {
if(!inuse) return;
y += this.speedY;
rect.left = x;
rect.top = y;
rect.bottom = bitmap.getHeight()+y;
rect.right = bitmap.getWidth()+x;
if(y< -bitmapHeight) {
inuse = false;
}
}
public void draw(Canvas canvas) {
if(!inuse) return;
canvas.drawBitmap(bitmap, x, y, null);
}
}
EnemyPlane.java
package game.framework;
import android.graphics.Canvas;
public class EnemyPlane extends Airplane {
boolean inuse;
public EnemyPlane() {
super(AppManager.getInstance().getBitmap(R.drawable.enemy_transparent));
setSpeed(0, 1);
AppManager.getInstance().enemyList.add(this);
}
@Override
public void draw(Canvas canvas) {
if(this.x==0 && this.y==0) {
this.x = canvas.getWidth()/2-bitmap.getWidth()/2;
this.y = 0;
}
super.draw(canvas);
}
}
SpriteAnimation.java
package game.framework;
import android.graphics.*;
import android.util.Log;
public class SpriteAnimation extends GraphicObject {
Rect srcRect = new Rect();
Rect dstRect = new Rect();
int msPerFrame;
int cntOfFrames;
int currentFrame;
long prevTime;
int spriteWidth;
int spriteHeight;
int spriteRows, spriteCols;
Paint paint;
public SpriteAnimation(Bitmap bitmap) {
super(bitmap);
}
public void initSpriteData(int rows, int cols, int width, int height, int fps, int cntOfFrames) {
spriteRows = rows;
spriteCols = cols;
spriteWidth = width;
spriteHeight = height;
srcRect.top = 0;
srcRect.bottom = spriteHeight;
srcRect.left = 0;
srcRect.right = spriteWidth;
msPerFrame = 1000/fps;
this.cntOfFrames = cntOfFrames;
paint = new Paint();
paint.setAlpha(255);
}
@Override
public void draw(Canvas canvas) {
dstRect.left = this.x;
dstRect.top = this.y;
dstRect.right = this.x+spriteWidth;
dstRect.bottom = this.y+spriteHeight;
canvas.drawBitmap(bitmap, srcRect, dstRect, paint);
//Log.i("스프라이트 애니", "draw()호출됨");
}
public void update(long currentTime) {
if(currentTime > prevTime + msPerFrame) {
prevTime = currentTime;
currentFrame++;
if(currentFrame >= cntOfFrames) {
currentFrame = 0;
}
}
//srcRect.left = currentFrame * spriteWidth;
//srcRect.right = srcRect.left + spriteWidth;
// 다중행의 Sprite sheet에 대응하기 위해 추가된 부분
srcRect.left = currentFrame%spriteCols*spriteWidth;
srcRect.right = srcRect.left + spriteWidth;
int rowNum = currentFrame/spriteCols;
srcRect.top = rowNum*spriteHeight;
srcRect.bottom = srcRect.top + spriteHeight;
//Log.i("스프라이트 애니", "update()호출됨");
}
}
Airplane.java
package game.framework;
import java.util.*;
import android.graphics.*;
import android.util.Log;
public class Airplane extends GraphicObject {
int speedX, speedY;
ArrayList<Missile> misList = new ArrayList<Missile>();
Rect rect = new Rect();
public Airplane() {
super(AppManager.getInstance().getBitmap(R.drawable.mustang_transparent));
}
public Airplane(Bitmap bitmap) {
super(bitmap);
}
public void init() {
AppManager.getInstance().setAirplane(this);
}
public void setSpeed(int speedX, int speedY) {
this.speedX = speedX;
this.speedY = speedY;
}
public void update() {
if(this.x==0 && this.y==0) return;
x += speedX;
y += speedY;
rect.left = x;
rect.top = y;
rect.bottom = bitmap.getHeight()+y;
rect.right = bitmap.getWidth()+x;
for(int i=0;i<misList.size();i++) {
if(misList.get(i).inuse) misList.get(i).update();
}
}
public void draw(Canvas canvas) {
if(this.x==0 && this.y==0) {
this.x = canvas.getWidth()/2-bitmap.getWidth()/2;
this.y = canvas.getHeight()-bitmap.getHeight();
}
for(int i=0;i<misList.size();i++) {
if(misList.get(i).inuse) misList.get(i).draw(canvas);
}
canvas.drawBitmap(bitmap, x, y, null);
}
public void fireMissile() {
Missile misToFire = null;
for(int i=0;i<misList.size();i++) {
if( ! misList.get(i).inuse) {
misToFire = misList.get(i);
Log.i("미사일선택", "미사일 재사용");
break;
}
}
if(misToFire==null) {
misToFire = new Missile();
Log.i("미사일선택", "미사일 새로 생성");
misList.add(misToFire);
}
misToFire.setPosition(this.x+(bitmap.getWidth()/2)-(misToFire.bitmap.getWidth()/2), this.y);
misToFire.setSpeed(0, -4);
misToFire.inuse = true;
}
}