飞翔的圆（类似flappy bird）android小游戏源码

package com.gb; import java.util.ArrayList; import android.content.Context; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.Paint; import android.graphics.Paint.Style; import android.util.TypedValue; import android.view.KeyEvent; import android.view.MotionEvent; import android.view.SurfaceHolder; import android.view.SurfaceHolder.Callback; import android.view.SurfaceView; public class GameBirdSurfaceView extends SurfaceView implements Callback, Runnable { private SurfaceHolder sfh; private Paint paint; private Thread th; private boolean flag; private Canvas canvas; private static int screenW, screenH; private static final int GAME_MENU = 0; private static final int GAMEING = 1; private static final int GAME_OVER = -1; private static int gameState = GAME_MENU; private int[] floor = new int[2]; private int floor_width = 15; private int speed = 3; private int[] level = new int[2]; private int level_value = 0; private int[] bird = new int[2]; private int bird_width = 10; private int bird_v = 0; private int bird_a = 2; private int bird_vUp = -16; private ArrayList<int[]> walls = new ArrayList<int[]>(); private ArrayList<int[]> remove_walls = new ArrayList<int[]>(); private int wall_w = 50; private int wall_h = 100; private int wall_step = 30; public GameBirdSurfaceView(Context context) { super(context); sfh = this.getHolder(); sfh.addCallback(this); paint = new Paint(); paint.setColor(Color.WHITE); paint.setAntiAlias(true); paint.setTextSize(50); paint.setStyle(Style.STROKE); //空心 setFocusable(true); setFocusableInTouchMode(true); this.setKeepScreenOn(true); } @Override public void surfaceCreated(SurfaceHolder holder) { screenW = this.getWidth(); screenH = this.getHeight(); //System.out.println("=======screenW="+screenW+"=======screenH="+screenH); initGame(); flag = true; th = new Thread(this); th.start(); } private void initGame() { if (gameState == GAME_MENU) { floor[0] = 0; floor[1] = screenH - screenH/5; level[0] = screenW/2; level[1] = screenH/5; level_value = 0; bird[0] = screenW/3; bird[1] = screenH/2; walls.clear(); //dp to px floor_width = dp2px(15); speed = dp2px(3); bird_width = dp2px(10); bird_a = dp2px(2); bird_vUp = -dp2px(16); wall_w = dp2px(45); wall_h = dp2px(100); wall_step = wall_w*4; } } private int dp2px(float dp){ int px = Math.round(TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp, getResources().getDisplayMetrics())); return px; } public void myDraw() { try { canvas = sfh.lockCanvas(); if (canvas != null) { //clear canvas.drawColor(Color.BLACK); //background int floor_start = floor[0]; while(floor_start<screenW){ canvas.drawLine(floor_start, floor[1], floor_start+floor_width, floor[1], paint); floor_start += floor_width*2; } //wall for (int i = 0; i < walls.size(); i++) { int[] wall = walls.get(i); float[] pts = { wall[0],0,wall[0],wall[1], wall[0],wall[1]+wall_h,wall[0],floor[1], wall[0]+wall_w,0,wall[0]+wall_w,wall[1], wall[0]+wall_w,wall[1]+wall_h,wall[0]+wall_w,floor[1], wall[0],wall[1], wall[0]+wall_w, wall[1], wall[0],wall[1]+wall_h, wall[0]+wall_w, wall[1]+wall_h //,wall[0],floor[1], wall[0]+wall_w, floor[1] }; canvas.drawLines(pts, paint); //canvas.drawRect(wall[0], 0, wall[0]+wall_w, wall[1], paint); //canvas.drawRect(wall[0], wall[1]+wall_h, wall[0]+wall_w, floor[1], paint); } //bird canvas.drawCircle(bird[0], bird[1], bird_width, paint); //level canvas.drawText(String.valueOf(level_value), level[0], level[1], paint); } } catch (Exception e) { // TODO: handle exception } finally { if (canvas != null) sfh.unlockCanvasAndPost(canvas); } } @Override public boolean onTouchEvent(MotionEvent event) { if(event.getAction() == MotionEvent.ACTION_DOWN){ switch (gameState) { case GAME_MENU: gameState = GAMEING; // bird_v = bird_vUp; // break; case GAMEING: bird_v = bird_vUp; break; case GAME_OVER: //bird down if(bird[1] >= floor[1] - bird_width){ gameState = GAME_MENU; initGame(); } break; } } return true; } @Override public boolean onKeyDown(int keyCode, KeyEvent event) { if (keyCode == KeyEvent.KEYCODE_BACK) { GameBirdActivity.instance.finish(); System.exit(0); return true; } return super.onKeyDown(keyCode, event); } private int move_step = 0; private void logic() { switch (gameState) { case GAME_MENU: break; case GAMEING: //bird bird_v+=bird_a; bird[1] += bird_v; if(bird[1] > floor[1] - bird_width){ bird[1] = floor[1] - bird_width; gameState = GAME_OVER; } //top // if(bird[1]<=bird_width){ // bird[1]=bird_width; // } //floor if(floor[0] < -floor_width){ floor[0] += floor_width*2; } floor[0] -= speed; //wall remove_walls.clear(); for (int i = 0; i < walls.size(); i++) { int[] wall = walls.get(i); wall[0] -= speed; if(wall[0]<-wall_w){ remove_walls.add(wall); }else if(wall[0]-bird_width<=bird[0] && wall[0]+wall_w+bird_width>=bird[0] && (bird[1]<=wall[1]+bird_width || bird[1]>=wall[1]+wall_h-bird_width)){ gameState = GAME_OVER; } int pass = wall[0]+wall_w+bird_width-bird[0]; if(pass<0 && -pass<=speed){ level_value++; } } //out of screen if(remove_walls.size()>0){ walls.removeAll(remove_walls); } //new wall move_step += speed; if(move_step>wall_step){ int[] wall = new int[]{screenW, (int)(Math.random()*(floor[1]-2*wall_h)+0.5*wall_h)}; walls.add(wall); move_step = 0; } break; case GAME_OVER: //bird if(bird[1] < floor[1] - bird_width){ bird_v+=bird_a; bird[1] += bird_v; if(bird[1] >= floor[1] - bird_width){ bird[1] = floor[1] - bird_width; } }else{ GameBirdActivity.instance.showMessage(level_value); gameState = GAME_MENU; initGame(); } break; } } @Override public void run() { while (flag) { long start = System.currentTimeMillis(); myDraw(); logic(); long end = System.currentTimeMillis(); try { if (end - start < 50) { Thread.sleep(50 - (end - start)); } } catch (InterruptedException e) { e.printStackTrace(); } } } @Override public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) { } @Override public void surfaceDestroyed(SurfaceHolder holder) { flag = false; } }