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在我的Android遊戲中，子彈顯得太快太靠近對方！我如何調整他們的行爲？ 下面是動畫對象太多子彈（版本2.0）
package game.objects.animation;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Rect;
abstract class AnimatedObject {
protected Bitmap bitmap; // the animation sequence
protected Rect sourceRect; // the rectangle to be drawn from the animation bitmap
private int frameNr; // number of frames in animation
private int currentFrame; // the current frame
private long frameTicker; // the time of the last frame update
private int framePeriod; // milliseconds between each frame (1000/fps)
protected int spriteWidth; // the width of the sprite to calculate the cut out rectangle
protected int spriteHeight; // the height of the sprite
private int x; // the X coordinate of the object (top left of the image)
private int y; // the Y coordinate of the object (top left of the image)
public boolean exist;
public AnimatedObject(Bitmap bitmap, int x, int y, int width, int height, int fps, int frameCount) {
this.bitmap = bitmap;
this.x = x;
this.y = y;
currentFrame = 0;
frameNr = frameCount;
spriteWidth = bitmap.getWidth()/frameCount;
spriteHeight = bitmap.getHeight();
sourceRect = new Rect(0, 0, spriteWidth, spriteHeight);
framePeriod = 1000/ fps;
frameTicker = 0l;
exist = true;
}
private void update(long gameTime) {
//if (gameTime > frameTicker + framePeriod) {
//frameTicker = gameTime;
// increment the frame
currentFrame++;
if (currentFrame >= frameNr) {
currentFrame = 0;
}
//}
// define the rectangle to cut out sprite
this.sourceRect.left = currentFrame * spriteWidth;
this.sourceRect.right = this.sourceRect.left + spriteWidth;
}
public void animate(){
if (currentFrame <= frameNr){
update(0);
}
}
public void draw(Canvas canvas) {
// where to draw the sprite
Rect destRect = new Rect(getX(), getY(), getX() + spriteWidth, getY() + spriteHeight);
canvas.drawBitmap(bitmap, sourceRect, destRect, null);
}
public boolean checkCollisons(Rect another)
{
return Rect.intersects(new Rect(getX(), getY(), getX() + spriteWidth, getY() + spriteHeight), another);
}
public void destroy()
{
exist = false;
}
public Bitmap getBitmap() {
return bitmap;
}
public void setBitmap(Bitmap bitmap) {
this.bitmap = bitmap;
}
public Rect getSourceRect() {
return sourceRect;
}
public void setSourceRect(Rect sourceRect) {
this.sourceRect = sourceRect;
}
public int getFrameNr() {
return frameNr;
}
public void setFrameNr(int frameNr) {
this.frameNr = frameNr;
}
public int getCurrentFrame() {
return currentFrame;
}
public void setCurrentFrame(int currentFrame) {
this.currentFrame = currentFrame;
}
public int getFramePeriod() {
return framePeriod;
}
public void setFramePeriod(int framePeriod) {
this.framePeriod = framePeriod;
}
public int getSpriteWidth() {
return spriteWidth;
}
public void setSpriteWidth(int spriteWidth) {
this.spriteWidth = spriteWidth;
}
public int getSpriteHeight() {
return spriteHeight;
}
public void setSpriteHeight(int spriteHeight) {
this.spriteHeight = spriteHeight;
}
public int getX() {
return x;
}
public void setX(int x) {
this.x = x;
}
public int getY() {
return y;
}
public void setY(int y) {
this.y = y;
}
}
類子彈
package game.objects.animation;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Rect;
import android.graphics.drawable.Drawable;
public class Bullet extends AnimatedObject{
private int mSpeedY;
public Bullet(Bitmap bitmap, int x, int y, int width, int height, int fps,
int frameCount) {
super(bitmap, x, y, width, height, fps, frameCount);
// TODO Auto-generated constructor stub
mSpeedY = 10;
setFramePeriod(5000/ fps);
}
public void draw(Canvas canvas) {
// where to draw the sprite
setY(getY() - mSpeedY);
Rect destRect = new Rect(getX(), getY(), getX() + spriteWidth, getY() + spriteHeight);
canvas.drawBitmap(bitmap, sourceRect, destRect, null);
}
public void animate()//анимация движения
{
super.animate();
setY(getY() - mSpeedY);
// checkBorders(rect);
}
}
類遊戲主循環，或者它的英文怎麼叫（我不是母語的人，對不起）
a picture of it
類
package game.view;
import game.main.R;
import game.objects.animation.Bullet;
import game.objects.animation.Explosion;
import game.objects.animation.ScrollingElement;
import game.objectsmain.Player;
import java.util.ArrayList;
import android.app.Activity;
import android.content.Context;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.drawable.Drawable;
import android.util.Log;
import android.view.MotionEvent;
import android.view.SurfaceHolder;
public class ViewManager extends Thread
{
private static final int FIELD_WIDTH = 480;
private static final int FIELD_HEIGHT = 800;
private static final int dist = 100;
public int touchedX, touchedY;
/** Область, на которой будем рисовать */
private SurfaceHolder mSurfaceHolder;
/** Состояние потока (выполняется или нет. Нужно, чтобы было удобнее прибивать поток, когда потребуется) */
private boolean mRunning;
/** Стили рисования */
private Paint mPaint;
/** The drawable to use as the background of the animation canvas */
private Bitmap mBackgroundImage;
private Bitmap mLinesImage;
private Bitmap mExplosionImage;
private Bitmap mBulletImage;
private Drawable mPlayerImage;
private ArrayList<ScrollingElement> mScrollEls = new ArrayList<ScrollingElement>();
private ArrayList<Bullet> mBullets = new ArrayList<Bullet>();
private ArrayList<Explosion> mBang = new ArrayList<Explosion>();
private Player mHero;
// desired fps
private final static int MAX_FPS = 50;
// maximum number of frames to be skipped
private final static int MAX_FRAME_SKIPS = 5;
// the frame period
private final static int FRAME_PERIOD = 1000/MAX_FPS;
private Explosion mBoom;//объект класса взрыв
public ViewManager(SurfaceHolder surfaceHolder, Context context)
{
mSurfaceHolder = surfaceHolder;
mRunning = false;
Resources res = context.getResources();
mExplosionImage = BitmapFactory.decodeResource(res, R.drawable.explosion);
mBackgroundImage = BitmapFactory.decodeResource(res, R.drawable.bckgr1);
mLinesImage = BitmapFactory.decodeResource(res, R.drawable.lines3);
mPlayerImage = res.getDrawable(android.R.drawable.star_big_on);
mBulletImage = BitmapFactory.decodeResource(res, R.drawable.bullet3);
InitElements(res);
mHero = new Player(mPlayerImage, 240, 400);
mBoom = new Explosion(mExplosionImage, 200, 500, 64, 64, 7, 7);
}
/**
* Задание состояния потока
* @param running
*/
public void setRunning(boolean running)
{
mRunning = running;
}
public void run()
{
while (mRunning)
{
Canvas canvas = null;
try
{
// подготовка Canvas-а
canvas = mSurfaceHolder.lockCanvas();
synchronized (mSurfaceHolder)
{
mHero.update();
// собственно рисование
addBullets();
doDraw(canvas);
//mImage.draw(canvas);
synchronized (mBullets) {
for (Bullet bullet: mBullets) {
//explosion if collides
if(bullet.checkCollisons(mHero.getRect()))
{
mBang.add(new Explosion(mExplosionImage, mHero.getXCoord(), mHero.getYCoord(), 64, 64, 7, 7));
mBang.get(0).draw(canvas);
mBang.get(0).animate();
};
//bullet.animate();
}
}
}
}
catch (Exception e) { }
finally
{
if (canvas != null)
{
mSurfaceHolder.unlockCanvasAndPost(canvas);
}
}
}
}
public boolean gettouch = false;//in class with surface golder there are touchlistener works with this variable
private void doDraw(Canvas canvas) {
// TODO Auto-generated method stub
canvas.drawBitmap(mBackgroundImage, 0, 0, null);
//отрисовка анимации
synchronized (mScrollEls) {
for (ScrollingElement element: mScrollEls) {
element.doDraw(canvas, mLinesImage);
element.animate(mLinesImage);
}
}
mHero.draw(canvas);
//mBoom.draw(canvas);
/*if(gettouch == true){
mBoom.draw(canvas);
mBoom.getCurrentFrame();
mBoom.animate();
}*/
synchronized (mBullets) {
for (Bullet bullet: mBullets) {
bullet.animate();
bullet.draw(canvas);
//bullet.animate();
}
}
}
private void addBullets()//элементы для анимации заднего плана
{
if(gettouch)
{
mBullets.add(new Bullet(mBulletImage, touchedX, touchedY, 22, 52, 3, 3));
}
}
public boolean touched(boolean x)
{
return x;
}
}
你需要描述你想要發生的事情，而不僅僅是發生了什麼。 –