我编写了一个受《太空入侵者》和Moon Patrol启发的迷你Android游戏场景。可以水平射击外星人(见上文)。
也可以垂直射击外星人(见下文)。
但是添加外星人并不能“缩放”，例如添加15个外星人以应对所有可能的碰撞将非常困难。最初的太空侵略者和月球巡逻队解决了这一问题，是否有可能制定出与我正在使用的策略不同的策略？外星人的确切 Activity 并不重要，仅是“有趣”。
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Rect;
import android.support.v4.view.MotionEventCompat;
import android.util.Log;
import android.view.MotionEvent;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import java.util.ArrayList;
import java.util.List;
public class ParallaxView extends SurfaceView implements Runnable {
List<Background> backgrounds;
private volatile boolean running;
private Thread gameThread = null;
// For drawing
private Paint paint;
private Canvas canvas;
private SurfaceHolder ourHolder;
// Holds a reference to the Activity
Context context;
// Control the fps
long fps = 60;
// Screen resolution
int screenWidth;
int screenHeight;
private void update() {
// Update all the background positions
for (Background bg : backgrounds) {
bg.update(fps);
}
}
ParallaxView(Context context, int screenWidth, int screenHeight) {
super(context);
this.context = context;
this.screenWidth = screenWidth;
this.screenHeight = screenHeight;
// Initialize our drawing objects
ourHolder = getHolder();
paint = new Paint();
// Initialize our array list
backgrounds = new ArrayList<>();
//load the background data into the Background objects and
// place them in our GameObject arraylist
backgrounds.add(new Background(
this.context,
screenWidth,
screenHeight,
"bg", 0, 120, 50));
backgrounds.add(new Background(
this.context,
screenWidth,
screenHeight,
"grass", 70, 110, 200));
// Add more backgrounds here
}
@Override
public void run() {
while (running) {
long startFrameTime = System.currentTimeMillis();
update();
if (j > 2000) {
j = -50;
k = 0;
}
if (o > 2000) {
o = -50;
l = 0;
}
draw();
// Calculate the fps this frame
long timeThisFrame = System.currentTimeMillis() - startFrameTime;
if (timeThisFrame >= 1) {
fps = 1000 / timeThisFrame;
}
}
}
int numberOfshots = 1;
int[] i = new int[200];
int j = 0;
int k = 0;
int l = 0;
int m = 0;
int o = 0;
boolean down = true;
long lastTurn = System.currentTimeMillis();
int xbuggy = 0;
int xbuggy2 = 0;
boolean down2 = true;
long lastTurn2 = System.currentTimeMillis();
long lastTurn3 = System.currentTimeMillis();
boolean jump = false;
boolean shoot = false;
int ind = 0;
private void draw() {
if (ourHolder.getSurface().isValid()) {
//First we lock the area of memory we will be drawing to
canvas = ourHolder.lockCanvas();
if (jump) {
xbuggy = xbuggy + 4;
}
if (shoot) {
xbuggy2 = xbuggy2 + 4;
}
if (System.currentTimeMillis() - lastTurn3 >= 1000) {
// Change direction here
jump = false;
lastTurn3 = System.currentTimeMillis();
xbuggy = 0;
}
//draw a background color
canvas.drawColor(Color.argb(255, 0, 0, 0));
// Draw the background parallax
drawBackground(0);
// Draw the rest of the game
paint.setTextSize(60);
paint.setColor(Color.argb(255, 255, 255, 255));
//canvas.drawText("MOONPATROL3000", 350, screenHeight / 100 * 5, paint);
int resID = context.getResources().getIdentifier("vehicle",
"drawable", context.getPackageName());
int alienResID = context.getResources().getIdentifier("object3_hdpi",
"drawable", context.getPackageName());
int alienResID2 = context.getResources().getIdentifier("object2_hdpi",
"drawable", context.getPackageName());
int alienResID3 = context.getResources().getIdentifier("object1_hdpi",
"drawable", context.getPackageName());
// Load the bitmap using the id
Bitmap bitmap = BitmapFactory.decodeResource(context.getResources(), resID);
Bitmap alienbitmap = BitmapFactory.decodeResource(context.getResources(), alienResID);
Bitmap alienbitmap2 = BitmapFactory.decodeResource(context.getResources(), alienResID2);
Bitmap alienbitmap3 = BitmapFactory.decodeResource(context.getResources(), alienResID3);
//paint.setTextSize(220);
for (int i1 = 0; i1 < numberOfshots; i1++) {
// if horizontal missile hits alien 0
if (java.lang.Math.abs(j - i[i1]) * 2 < (alienbitmap.getWidth() + 60) && java.lang.Math.abs(k +150+ screenHeight / 100 * 45 - (float) (screenHeight * 0.61)) * 2 < (alienbitmap.getHeight() + 60)) {
//y1[i2] = -random.nextInt(1000); // reset to new vertical position
//score += 1;
//onScoreListener.onScore(score);
Log.d("missile", "missile hit! ");
j=-200;
}
// if vertical missile hits alien 0
if (java.lang.Math.abs(j - 185) * 2 < (alienbitmap.getWidth() + 60) && java.lang.Math.abs(j + 150 + screenHeight / 100 * 45 - (screenHeight / 100 * 95 - i[i1] - xbuggy2)) * 2 < (alienbitmap.getHeight() + 60)) {
//y1[i2] = -random.nextInt(1000); // reset to new vertical position
//score += 1;
//onScoreListener.onScore(score);
Log.d("missile", "missile hit! ");
j=-200;
}
// if horizontal missile hits alien 1, right now this won't happen
if (java.lang.Math.abs(j - i[i1]) * 2 < (alienbitmap.getWidth() + 60) && java.lang.Math.abs(k +150+ screenHeight / 100 * 45 - (float) (screenHeight * 0.61)) * 2 < (alienbitmap.getHeight() + 60)) {
//y1[i2] = -random.nextInt(1000); // reset to new vertical position
//score += 1;
//onScoreListener.onScore(score);
Log.d("missile", "missile hit! ");
j=-200;
}
// if vertical missile hits alien 1
if (java.lang.Math.abs(o + 10 - 185) * 2 < (alienbitmap.getWidth() + 60) && java.lang.Math.abs(l + screenHeight / 100 * 25 - (screenHeight / 100 * 95 - i[i1] - xbuggy2)) * 2 < (alienbitmap.getHeight() + 60)) {
//y1[i2] = -random.nextInt(1000); // reset to new vertical position
//score += 1;
//onScoreListener.onScore(score);
Log.d("missile", "missile hit! ");
o=-200;
}
canvas.drawText("o", i[i1], (float) (screenHeight * 0.61), paint);
canvas.drawText("o", 185, screenHeight / 100 * 95 - i[i1] - xbuggy2, paint);
if (i1 == numberOfshots - 1 && i[i1] > screenWidth) {
if (numberOfshots > 0) numberOfshots--;
if (ind > 0) ind--;
}
}
if (System.currentTimeMillis() - lastTurn >= 2000) {
// Change direction here
down = !down;
lastTurn = System.currentTimeMillis();
}
if (System.currentTimeMillis() - lastTurn2 >= 7000) {
// Change direction here
down2 = !down2;
lastTurn2 = System.currentTimeMillis();
}
canvas.drawBitmap(alienbitmap, j, k +150+ screenHeight / 100 * 45, paint);
canvas.drawBitmap(alienbitmap2, o + 10, l + screenHeight / 100 * 25, paint);
//canvas.drawBitmap(alienbitmap3, j+20, k+screenHeight / 100 * 5, paint);
drawBackground(1);
canvas.drawBitmap(bitmap, 50, (float) (screenHeight * 0.5) - xbuggy, paint);
// Draw the foreground parallax
for (int n = 0; n < numberOfshots; n++)
i[n] = i[n] + 20;
j = j + 10;
o = o + 7;
if (!down)
k=k+2;
else
k=k-2;
if (!down2)
l++;
else
l--;
// Unlock and draw the scene
ourHolder.unlockCanvasAndPost(canvas);
}
}
// Clean up our thread if the game is stopped
public void pause() {
running = false;
try {
gameThread.join();
} catch (InterruptedException e) {
// Error
}
}
// Make a new thread and start it
// Execution moves to our run method
public void resume() {
running = true;
gameThread = new Thread(this);
gameThread.start();
}
private void drawBackground(int position) {
// Make a copy of the relevant background
Background bg = backgrounds.get(position);
// define what portion of images to capture and
// what coordinates of screen to draw them at
// For the regular bitmap
Rect fromRect1 = new Rect(0, 0, bg.width - bg.xClip, bg.height);
Rect toRect1 = new Rect(bg.xClip, bg.startY, bg.width, bg.endY);
// For the reversed background
Rect fromRect2 = new Rect(bg.width - bg.xClip, 0, bg.width, bg.height);
Rect toRect2 = new Rect(0, bg.startY, bg.xClip, bg.endY);
//draw the two background bitmaps
if (!bg.reversedFirst) {
canvas.drawBitmap(bg.bitmap, fromRect1, toRect1, paint);
canvas.drawBitmap(bg.bitmapReversed, fromRect2, toRect2, paint);
} else {
canvas.drawBitmap(bg.bitmap, fromRect2, toRect2, paint);
canvas.drawBitmap(bg.bitmapReversed, fromRect1, toRect1, paint);
}
}
// Because we call this from onTouchEvent, this code will be executed for both
// normal touch events and for when the system calls this using Accessibility
@Override
public boolean performClick() {
super.performClick();
launchMissile();
return true;
}
private void launchMissile() {
i[ind] = 350;
ind++;
xbuggy2 = 0;
shoot = true;
}
// event listener for when the user touches the screen
@Override
public boolean onTouchEvent(MotionEvent event) {
boolean gameOver = false;
//if (paused) {
// paused = false;
//}
int action = MotionEventCompat.getActionMasked(event);
int coordX = (int) event.getX();
int coordY = (int) event.getY();
Log.d("coordY", "coordY " + coordY);
if (coordX < 220 && xbuggy == 0 && action == MotionEvent.ACTION_MOVE) {
jump = true;
shoot = false;
lastTurn3 = System.currentTimeMillis();
return true; // do nothing
}
if (coordX > 219 && action == MotionEvent.ACTION_DOWN) {
numberOfshots++;
performClick();
return true;
}
return true;
}
}
更新资料
我已经开始根据以下内容封装外星人的逻辑。
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
public class Alien {
public Alien(){}
public Alien(Context context, String name) {
setAlienResID(context.getResources().getIdentifier("object3_hdpi",
"drawable", context.getPackageName()));
setAlienbitmap(BitmapFactory.decodeResource(context.getResources(), this.getAlienResID()));
}
public int getAlienResID() {
return alienResID;
}
public void setAlienResID(int alienResID) {
this.alienResID = alienResID;
}
public Bitmap getAlienbitmap() {
return alienbitmap;
}
public void setAlienbitmap(Bitmap alienbitmap) {
this.alienbitmap = alienbitmap;
}
public int getWidth() {
return width;
}
public void setWidth(int width) {
this.width = width;
}
public int getHeight() {
return height;
}
public void setHeight(int height) {
this.height = height;
}
int alienResID;
Bitmap alienbitmap;
int width;
int height;
}
public class AttackingAlien extends Alien {
public AttackingAlien(Context context, String name) {
super(context, name);
}
}
更新2
我改变了策略。现在我正在画一艘将轰炸月球车的宇宙飞船。
相关代码是
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Rect;
import android.support.v4.view.MotionEventCompat;
import android.util.Log;
import android.view.MotionEvent;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import java.util.ArrayList;
import java.util.List;
public class ParallaxView extends SurfaceView implements Runnable {
List<Background> backgrounds;
private volatile boolean running;
private Thread gameThread = null;
// For drawing
private Paint paint;
private Canvas canvas;
private SurfaceHolder ourHolder;
// Holds a reference to the Activity
Context context;
// Control the fps
long fps = 60;
// Screen resolution
int screenWidth;
int screenHeight;
private void update() {
// Update all the background positions
for (Background bg : backgrounds) {
bg.update(fps);
}
}
ParallaxView(Context context, int screenWidth, int screenHeight) {
super(context);
this.context = context;
this.screenWidth = screenWidth;
this.screenHeight = screenHeight;
// Initialize our drawing objects
ourHolder = getHolder();
paint = new Paint();
// Initialize our array list
backgrounds = new ArrayList<>();
//load the background data into the Background objects and
// place them in our GameObject arraylist
backgrounds.add(new Background(
this.context,
screenWidth,
screenHeight,
"bg", 0, 120, 50));
backgrounds.add(new Background(
this.context,
screenWidth,
screenHeight,
"grass", 70, 110, 200));
// Add more backgrounds here
}
@Override
public void run() {
while (running) {
long startFrameTime = System.currentTimeMillis();
update();
if (j > 2000) {
j = -50;
k = 0;
}
if (o > 2000) {
o = -50;
l = 0;
}
draw();
// Calculate the fps this frame
long timeThisFrame = System.currentTimeMillis() - startFrameTime;
if (timeThisFrame >= 1) {
fps = 1000 / timeThisFrame;
}
}
}
int numberOfshots = 1;
int[] i = new int[200];
int j = 0;
int k = 0;
int l = 0;
int m = 0;
int o = 0;
boolean down = true;
long lastTurn = System.currentTimeMillis();
int xbuggy = 0;
int xbuggy2 = 0;
boolean down2 = true;
long lastTurn2 = System.currentTimeMillis();
long lastTurn3 = System.currentTimeMillis();
long lastTurn4 = System.currentTimeMillis();
boolean jump = false;
boolean shoot = false;
int ind = 0;
int numberOfAlienshots = 1;
int missileOffSetY = 0;
private void draw() {
if (ourHolder.getSurface().isValid()) {
//First we lock the area of memory we will be drawing to
canvas = ourHolder.lockCanvas();
if (jump) {
xbuggy = xbuggy + 4;
}
if (shoot) {
xbuggy2 = xbuggy2 + 4;
}
if (System.currentTimeMillis() - lastTurn4 >= 2000) {
// Change direction here
//jump = false;
lastTurn4 = System.currentTimeMillis();
missileOffSetY = 0;
}
if (System.currentTimeMillis() - lastTurn3 >= 1000) {
// Change direction here
jump = false;
lastTurn3 = System.currentTimeMillis();
xbuggy = 0;
}
//draw a background color
canvas.drawColor(Color.argb(255, 0, 0, 0));
// Draw the background parallax
drawBackground(0);
// Draw the rest of the game
paint.setTextSize(60);
paint.setColor(Color.argb(255, 255, 255, 255));
//canvas.drawText("MOONPATROL3000", 350, screenHeight / 100 * 5, paint);
int resID = context.getResources().getIdentifier("vehicle",
"drawable", context.getPackageName());
Alien alien1 = new AttackingAlien(context, "right_side_hdpi");
Alien alien2 = new AttackingAlien(context, "object2_hdpi");
Alien alien3 = new AttackingAlien(context, "object1_hdpi");
int alienResID = context.getResources().getIdentifier("right_side_hdpi",
"drawable", context.getPackageName());
int alienResID2 = context.getResources().getIdentifier("right_side_hdpi",
"drawable", context.getPackageName());
int alienResID3 = context.getResources().getIdentifier("right_side_hdpi",
"drawable", context.getPackageName());
// Load the bitmap using the id
Bitmap bitmap = BitmapFactory.decodeResource(context.getResources(), resID);
Bitmap alienbitmap = BitmapFactory.decodeResource(context.getResources(), alienResID);
Bitmap alienbitmap2 = BitmapFactory.decodeResource(context.getResources(), alienResID2);
Bitmap alienbitmap3 = BitmapFactory.decodeResource(context.getResources(), alienResID3);
//paint.setTextSize(220);
//for (int i1 = 0; i1 < numberOfAlienshots; i1++) {
if (missileOffSetY < 300) {
canvas.drawText("|", o + 10 + alienbitmap2.getWidth() / 2, l + screenHeight / 100 * 25 + 75 + missileOffSetY, paint);
missileOffSetY = missileOffSetY + 10;
}
for (int i1 = 0; i1 < numberOfshots; i1++) {
// if horizontal missile hits alien 0
if (java.lang.Math.abs(j - i[i1]) * 2 < (alien1.getWidth() + 60) && java.lang.Math.abs(k +150+ screenHeight / 100 * 45 - (float) (screenHeight * 0.61)) * 2 < (alien1.getHeight() + 60)) {
//y1[i2] = -random.nextInt(1000); // reset to new vertical position
//score += 1;
//onScoreListener.onScore(score);
Log.d("missile", "missile hit! ");
j=-200;
}
// if vertical missile hits alien 0
if (java.lang.Math.abs(j - 185) * 2 < (alienbitmap.getWidth() + 60) && java.lang.Math.abs(j + 150 + screenHeight / 100 * 45 - (screenHeight / 100 * 95 - i[i1] - xbuggy2)) * 2 < (alienbitmap.getHeight() + 60)) {
j=-200;
}
// if horizontal missile hits alien 1, right now this won't happen
if (java.lang.Math.abs(j - i[i1]) * 2 < (alienbitmap.getWidth() + 60) && java.lang.Math.abs(k +150+ screenHeight / 100 * 45 - (float) (screenHeight * 0.61)) * 2 < (alienbitmap.getHeight() + 60)) {
j=-200;
}
// if vertical missile hits alien 1
if (java.lang.Math.abs(o + 10 - 185) * 2 < (alienbitmap.getWidth() + 60) && java.lang.Math.abs(l + screenHeight / 100 * 25 - (screenHeight / 100 * 95 - i[i1] - xbuggy2)) * 2 < (alienbitmap.getHeight() + 60)) {
o=-200;
}
canvas.drawText("o", i[i1], (float) (screenHeight * 0.61), paint);
canvas.drawText("o", 185, screenHeight / 100 * 95 - i[i1] - xbuggy2, paint);
if (i1 == numberOfshots - 1 && i[i1] > screenWidth) {
if (numberOfshots > 0) numberOfshots--;
if (ind > 0) ind--;
}
}
if (System.currentTimeMillis() - lastTurn >= 2000) {
// Change direction here
down = !down;
lastTurn = System.currentTimeMillis();
}
if (System.currentTimeMillis() - lastTurn2 >= 7000) {
// Change direction here
down2 = !down2;
lastTurn2 = System.currentTimeMillis();
}
// canvas.drawBitmap(alien1.getAlienbitmap(), j, k +150+ screenHeight / 100 * 45, paint);
canvas.drawBitmap(alienbitmap2, o + 10, l + screenHeight / 100 * 25, paint);
//canvas.drawBitmap(alienbitmap3, j+20, k+screenHeight / 100 * 5, paint);
drawBackground(1);
canvas.drawBitmap(bitmap, 50, (float) (screenHeight * 0.5) - xbuggy, paint);
// Draw the foreground parallax
for (int n = 0; n < numberOfshots; n++)
i[n] = i[n] + 20;
j = j + 10;
o = o + 7;
if (!down)
k=k+2;
else
k=k-2;
if (!down2)
l++;
else
l--;
// Unlock and draw the scene
ourHolder.unlockCanvasAndPost(canvas);
}
}
// Clean up our thread if the game is stopped
public void pause() {
running = false;
try {
gameThread.join();
} catch (InterruptedException e) {
// Error
}
}
// Make a new thread and start it
// Execution moves to our run method
public void resume() {
running = true;
gameThread = new Thread(this);
gameThread.start();
}
private void drawBackground(int position) {
// Make a copy of the relevant background
Background bg = backgrounds.get(position);
// define what portion of images to capture and
// what coordinates of screen to draw them at
// For the regular bitmap
Rect fromRect1 = new Rect(0, 0, bg.width - bg.xClip, bg.height);
Rect toRect1 = new Rect(bg.xClip, bg.startY, bg.width, bg.endY);
// For the reversed background
Rect fromRect2 = new Rect(bg.width - bg.xClip, 0, bg.width, bg.height);
Rect toRect2 = new Rect(0, bg.startY, bg.xClip, bg.endY);
//draw the two background bitmaps
if (!bg.reversedFirst) {
canvas.drawBitmap(bg.bitmap, fromRect1, toRect1, paint);
canvas.drawBitmap(bg.bitmapReversed, fromRect2, toRect2, paint);
} else {
canvas.drawBitmap(bg.bitmap, fromRect2, toRect2, paint);
canvas.drawBitmap(bg.bitmapReversed, fromRect1, toRect1, paint);
}
}
// Because we call this from onTouchEvent, this code will be executed for both
// normal touch events and for when the system calls this using Accessibility
@Override
public boolean performClick() {
super.performClick();
launchMissile();
return true;
}
private void launchMissile() {
i[ind] = 350; // what does it do?
ind++;
xbuggy2 = 0;
shoot = true;
}
// event listener for when the user touches the screen
@Override
public boolean onTouchEvent(MotionEvent event) {
boolean gameOver = false;
//if (paused) {
// paused = false;
//}
int action = MotionEventCompat.getActionMasked(event);
int coordX = (int) event.getX();
int coordY = (int) event.getY();
Log.d("coordY", "coordY " + coordY);
if (coordX < 220 && xbuggy == 0 && action == MotionEvent.ACTION_MOVE) {
jump = true;
shoot = false;
lastTurn3 = System.currentTimeMillis();
return true; // do nothing
}
if (coordX > 219 && action == MotionEvent.ACTION_DOWN) {
numberOfshots++;
performClick();
return true;
}
return true;
}
}
最佳答案
您最大的错误似乎是在绘制例程中分配了4个位图。在onCreate中分配这些位图，并仅调用初始化onCreate()的全局位图。那将解决您的问题。您可以在它们的位置绘制它们。
private void draw() {
Alien alien1 = new AttackingAlien(context, "right_side_hdpi");
Alien alien2 = new AttackingAlien(context, "object2_hdpi");
Alien alien3 = new AttackingAlien(context, "object1_hdpi");
您分配了一堆调用上下文的内存对象，并扩展了drawable和一堆其他工作。您可能刚刚使用了最后一刻的相同外星人。
int alienResID = context.getResources().getIdentifier("right_side_hdpi",
"drawable", context.getPackageName());
int alienResID2 = context.getResources().getIdentifier("right_side_hdpi",
"drawable", context.getPackageName());
int alienResID3 = context.getResources().getIdentifier("right_side_hdpi",
"drawable", context.getPackageName());
外星人的ID与上一个滴答滴答声没有变化。
// Load the bitmap using the id
Bitmap bitmap = BitmapFactory.decodeResource(context.getResources(), resID);
Bitmap alienbitmap = BitmapFactory.decodeResource(context.getResources(), alienResID);
Bitmap alienbitmap2 = BitmapFactory.decodeResource(context.getResources(), alienResID2);
Bitmap alienbitmap3 = BitmapFactory.decodeResource(context.getResources(), alienResID3);
这些是来自最后一个刻度的相同位图，并且位图很大，并且从资源中获取它们的速度很慢，而您正在做每个刻度。
}
}
其他大多数东西在这里和那里都会缩短半毫秒，但这可能会让您进入正确的FPS球场。
即使您还有其他人也不要担心。
通过使例程更快，可以解决您的大部分问题。现在是个好时机，您做错了。通常的正确方法是每17毫秒左右就有一个循环滴答声。其余时间将暂停。有些错误很明显。
您最大的错误似乎是在绘制例程中分配了4个位图。
但是，绘制例程只能绘制。您在 Canvas 上绘制了需要发生的事情，仅此而已。您不会分配任何东西，也不会给任何东西充气，您会获得东西所在位置的数字，然后绘制该位置已加载到内存中的东西。
您正在绘制例程中进行滴答并进行碰撞检测，并为此分配了一堆对象，而无论如何它们都必须在一秒钟内被扔到刨木机中。
在初始化之外或存在新外星人的特殊情况下，请勿创建任何对象。您不应在绘制例程中的任何地方使用"new"符号。曾经
您正在使用蛮力进行碰撞检测，最终却没有。找到一个喜欢的不错的加速结构并使用它。对于1个对象，这无关紧要。
不要称呼外星人的类，虽然看起来更漂亮，但您想要外星人的边界框的原始数字。然后，您希望将它们保持在某种结构中，从而可以非常快速地引用它们(您需要不到17ms的帧)。调用一堆宽度命令实际上并没有太大帮助，即使它们更改了大小也只是更改了Hitbox的数量。这些方法为您提供了一些不错的数据结构，例如具有一系列按顺序排列的匹配框，您可以对它们进行二进制搜索，并通过对结构进行log(n)更新来查找被移动的对象是否在log(n)时间内击中了对象，或者遍历“轴对齐的边界框树”的一些方法。这是您最终需要的东西，但是只要您保持简单，它就可以工作。不过，实际上，这只是您的位图在执行大部分减慢操作。
还有很多其他基本问题，例如将边界框放在if语句内，而不是制作两个其他矩形。但是还有其他问题，例如完全制作矩形!您可以使用实际位置来调用绘图，而不是使用一些分配大对象的对象来调用函数。只需使用数字调用该函数即可。
您应该有一个例程，该例程根据物料的位置为您绘制图形。它应该能够在不到17毫秒的时间内绘制出所需绘制的所有内容。如果不能，您将永远无法达到60fps。因此，在这种情况下，减少工作量并做得更好。该空间背景是否需要为位图？您能为天空画一些点，然后相应地调整图形吗？绘制例程从不分配任何东西。期。如果您需要分配一些东西，它应该已经在初始化期间进行了。分配是您生存的祸根。
您的触摸会更新内容的位置。 AI/Physics勾号还会更新事物的位置并检查是否存在合谋。绘制仅根据内存中的位置和内容绘制内容。
在其自己的线程中运行更新位置刻度。您只需要处理将要读取和写入相同数据的并发位。它只需要同步绘制数据的变化数据读取，以便将这些部分(触摸中的位置更新，刻度中的位置更新，以及绘制例程本身的位置)扔到同一个对象的同步块(synchronized block)中。