用 Java 開發(fā)一個打飛機小游戲（附完整源碼）

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來自：https://blog.csdn.net/wclxyn/article/details/110159708

上圖

寫在前面

技術源于分享，所以今天抽空把自己之前用java做過的小游戲整理貼出來給大家參考學習。

java確實不適合寫桌面應用，這里只是通過這個游戲讓大家理解oop面向對象編程的過程，純屬娛樂。代碼寫的很簡單，也很容易理解，并且注釋寫的很清楚了，還有問題，自己私下去補課學習。

完整代碼

敵飛機

import?java.util.Random;


?敵飛機:?是飛行物，也是敵人

public?class?Airplane?extends?FlyingObject?implements?Enemy?{
????private?int?speed?=?3;??//移動步驟

????/**?初始化數(shù)據(jù)?*/
????public?Airplane(){
????????this.image?=?ShootGame.airplane;
????????width?=?image.getWidth();
????????height?=?image.getHeight();
????????y?=?-height;??????????
????????Random?rand?=?new?Random();
????????x?=?rand.nextInt(ShootGame.WIDTH?-?width);
????}

????/**?獲取分數(shù)?*/
????@Override
????public?int?getScore()?{??
????????return?5;
????}

????/**?//越界處理?*/
????@Override
????public?????boolean?outOfBounds()?{???
????????return?y>ShootGame.HEIGHT;
????}

????/**?移動?*/
????@Override
????public?void?step()?{???
????????y?+=?speed;
????}
}

分數(shù)獎勵

/**?
?*?獎勵?
?*/??
public?interface?Award?{??
????int?DOUBLE_FIRE?=?0;??//雙倍火力??
????int?LIFE?=?1;???//1條命??
????/**?獲得獎勵類型(上面的0或1)?*/??
????int?getType();??
}

蜜蜂

import?java.util.Random;??

/**?蜜蜂?*/??
public?class?Bee?extends?FlyingObject?implements?Award{??
????private?int?xSpeed?=?1;???//x坐標移動速度??
????private?int?ySpeed?=?2;???//y坐標移動速度??
????private?int?awardType;????//獎勵類型??

????/**?初始化數(shù)據(jù)?*/??
????public?Bee(){??
????????this.image?=?ShootGame.bee;??
????????width?=?image.getWidth();??
????????height?=?image.getHeight();??
????????y?=?-height;??
????????Random?rand?=?new?Random();??
????????x?=?rand.nextInt(ShootGame.WIDTH?-?width);??
????????awardType?=?rand.nextInt(2);???//初始化時給獎勵??
????}??

????/**?獲得獎勵類型?*/??
????public?int?getType(){??
????????return?awardType;??
????}??

????/**?越界處理?*/??
????@Override??
????public?boolean?outOfBounds()?{??
????????return?y>ShootGame.HEIGHT;??
????}??

????/**?移動，可斜著飛?*/??
????@Override??
????public?void?step()?{????????
????????x?+=?xSpeed;??
????????y?+=?ySpeed;??
????????if(x?>?ShootGame.WIDTH-width){????
????????????xSpeed?=?-1;??
????????}??
????????if(x?????????????xSpeed?=?1;??
????????}??
????}??
}

子彈類：是飛行物體

/**?
?*?子彈類:是飛行物?
?*/??
public?class?Bullet?extends?FlyingObject?{??
????private?int?speed?=?3;??//移動的速度??

????/**?初始化數(shù)據(jù)?*/??
????public?Bullet(int?x,int?y){??
????????this.x?=?x;??
????????this.y?=?y;??
????????this.image?=?ShootGame.bullet;??
????}??

????/**?移動?*/??
????@Override??
????public?void?step(){?????
????????y-=speed;??
????}??

????/**?越界處理?*/??
????@Override??
????public?boolean?outOfBounds()?{??
????????return?y<-height;??
????}??

}

敵人的分數(shù)

/**?
?*?敵人，可以有分數(shù)?
?*/??
public?interface?Enemy?{??
????/**?敵人的分數(shù)??*/??
????int?getScore();??
}

飛行物(敵機，蜜蜂，子彈，英雄機)

import?java.awt.image.BufferedImage;??

/**?
?*?飛行物(敵機，蜜蜂，子彈，英雄機)?
?*/??
public?abstract?class?FlyingObject?{??
????protected?int?x;????//x坐標??
????protected?int?y;????//y坐標??
????protected?int?width;????//寬??
????protected?int?height;???//高??
????protected?BufferedImage?image;???//圖片??

????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;??
????}??

????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;??
????}??

????public?BufferedImage?getImage()?{??
????????return?image;??
????}??

????public?void?setImage(BufferedImage?image)?{??
????????this.image?=?image;??
????}??

????/**?
?????*?檢查是否出界?
?????*?@return?true?出界與否?
?????*/??
????public?abstract?boolean?outOfBounds();??

????/**?
?????*?飛行物移動一步?
?????*/??
????public?abstract?void?step();??

????/**?
?????*?檢查當前飛行物體是否被子彈(x,y)擊(shoot)中?
?????*?@param?Bullet?子彈對象?
?????*?@return?true表示被擊中了?
?????*/??
????public?boolean?shootBy(Bullet?bullet){??
????????int?x?=?bullet.x;??//子彈橫坐標??
????????int?y?=?bullet.y;??//子彈縱坐標??
????????return?this.x????}??

}

英雄機

import?java.awt.image.BufferedImage;??

/**?
?*?英雄機:是飛行物??
?*/??
public?class?Hero?extends?FlyingObject{??

????private?BufferedImage[]?images?=?{};??//英雄機圖片??
????private?int?index?=?0;????????????????//英雄機圖片切換索引??

????private?int?doubleFire;???//雙倍火力??
????private?int?life;???//命??

????/**?初始化數(shù)據(jù)?*/??
????public?Hero(){??
????????life?=?3;???//初始3條命??
????????doubleFire?=?0;???//初始火力為0??
????????images?=?new?BufferedImage[]{ShootGame.hero0,?ShootGame.hero1};?//英雄機圖片數(shù)組??
????????image?=?ShootGame.hero0;???//初始為hero0圖片??
????????width?=?image.getWidth();??
????????height?=?image.getHeight();??
????????x?=?150;??
????????y?=?400;??
????}??

????/**?獲取雙倍火力?*/??
????public?int?isDoubleFire()?{??
????????return?doubleFire;??
????}??

????/**?設置雙倍火力?*/??
????public?void?setDoubleFire(int?doubleFire)?{??
????????this.doubleFire?=?doubleFire;??
????}??

????/**?增加火力?*/??
????public?void?addDoubleFire(){??
????????doubleFire?=?40;??
????}??

????/**?增命?*/??
????public?void?addLife(){??//增命??
????????life++;??
????}??

????/**?減命?*/??
????public?void?subtractLife(){???//減命??
????????life--;??
????}??

????/**?獲取命?*/??
????public?int?getLife(){??
????????return?life;??
????}??

????/**?當前物體移動了一下，相對距離，x,y鼠標位置??*/??
????public?void?moveTo(int?x,int?y){?????
????????this.x?=?x?-?width/2;??
????????this.y?=?y?-?height/2;??
????}??

????/**?越界處理?*/??
????@Override??
????public?boolean?outOfBounds()?{??
????????return?false;????
????}??

????/**?發(fā)射子彈?*/??
????public?Bullet[]?shoot(){?????
????????int?xStep?=?width/4;??????//4半??
????????int?yStep?=?20;??//步??
????????if(doubleFire>0){??//雙倍火力??
????????????Bullet[]?bullets?=?new?Bullet[2];??
????????????bullets[0]?=?new?Bullet(x+xStep,y-yStep);??//y-yStep(子彈距飛機的位置)??
????????????bullets[1]?=?new?Bullet(x+3*xStep,y-yStep);??
????????????return?bullets;??
????????}else{??????//單倍火力??
????????????Bullet[]?bullets?=?new?Bullet[1];??
????????????bullets[0]?=?new?Bullet(x+2*xStep,y-yStep);????
????????????return?bullets;??
????????}??
????}??

????/**?移動?*/??
????@Override??
????public?void?step()?{??
????????if(images.length>0){??
????????????image?=?images[index++/10%images.length];??//切換圖片hero0，hero1??
????????}??
????}??

????/**?碰撞算法?*/??
????public?boolean?hit(FlyingObject?other){??

????????int?x1?=?other.x?-?this.width/2;?????????????????//x坐標最小距離??
????????int?x2?=?other.x?+?this.width/2?+?other.width;???//x坐標最大距離??
????????int?y1?=?other.y?-?this.height/2;????????????????//y坐標最小距離??
????????int?y2?=?other.y?+?this.height/2?+?other.height;?//y坐標最大距離??

????????int?herox?=?this.x?+?this.width/2;???????????????//英雄機x坐標中心點距離??
????????int?heroy?=?this.y?+?this.height/2;??????????????//英雄機y坐標中心點距離??

????????return?herox>x1?&&?heroxy1?&&?heroy????}??

}

游戲啟動主類

import?java.awt.Font;??
import?java.awt.Color;??
import?java.awt.Graphics;??
import?java.awt.event.MouseAdapter;??
import?java.awt.event.MouseEvent;??
import?java.util.Arrays;??
import?java.util.Random;??
import?java.util.Timer;??
import?java.util.TimerTask;??
import?java.awt.image.BufferedImage;??

import?javax.imageio.ImageIO;??
import?javax.swing.ImageIcon;??
import?javax.swing.JFrame;??
import?javax.swing.JPanel;??
/**
?*?
?*/
public?class?ShootGame?extends?JPanel?{??
????public?static?final?int?WIDTH?=?400;?//?面板寬??
????public?static?final?int?HEIGHT?=?654;?//?面板高??
????/**?游戲的當前狀態(tài):?START?RUNNING?PAUSE?GAME_OVER?*/??
????private?int?state;??
????private?static?final?int?START?=?0;??
????private?static?final?int?RUNNING?=?1;??
????private?static?final?int?PAUSE?=?2;??
????private?static?final?int?GAME_OVER?=?3;??

????private?int?score?=?0;?//?得分??
????private?Timer?timer;?//?定時器??
????private?int?intervel?=?1000?/?100;?//?時間間隔(毫秒)??

????public?static?BufferedImage?background;??
????public?static?BufferedImage?start;??
????public?static?BufferedImage?airplane;??
????public?static?BufferedImage?bee;??
????public?static?BufferedImage?bullet;??
????public?static?BufferedImage?hero0;??
????public?static?BufferedImage?hero1;??
????public?static?BufferedImage?pause;??
????public?static?BufferedImage?gameover;??

????private?FlyingObject[]?flyings?=?{};?//?敵機數(shù)組??
????private?Bullet[]?bullets?=?{};?//?子彈數(shù)組??
????private?Hero?hero?=?new?Hero();?//?英雄機??

????static?{?//?靜態(tài)代碼塊，初始化圖片資源??
????????try?{??
????????????background?=?ImageIO.read(ShootGame.class??
????????????????????.getResource("background.png"));??
????????????start?=?ImageIO.read(ShootGame.class.getResource("start.png"));??
????????????airplane?=?ImageIO??
????????????????????.read(ShootGame.class.getResource("airplane.png"));??
????????????bee?=?ImageIO.read(ShootGame.class.getResource("bee.png"));??
????????????bullet?=?ImageIO.read(ShootGame.class.getResource("bullet.png"));??
????????????hero0?=?ImageIO.read(ShootGame.class.getResource("hero0.png"));??
????????????hero1?=?ImageIO.read(ShootGame.class.getResource("hero1.png"));??
????????????pause?=?ImageIO.read(ShootGame.class.getResource("pause.png"));??
????????????gameover?=?ImageIO??
????????????????????.read(ShootGame.class.getResource("gameover.png"));??
????????}?catch?(Exception?e)?{??
????????????e.printStackTrace();??
????????}??
????}??

????/**?畫?*/??
????@Override??
????public?void?paint(Graphics?g)?{??
????????g.drawImage(background,?0,?0,?null);?//?畫背景圖??
????????paintHero(g);?//?畫英雄機??
????????paintBullets(g);?//?畫子彈??
????????paintFlyingObjects(g);?//?畫飛行物??
????????paintScore(g);?//?畫分數(shù)??
????????paintState(g);?//?畫游戲狀態(tài)??
????}??

????/**?畫英雄機?*/??
????public?void?paintHero(Graphics?g)?{??
????????g.drawImage(hero.getImage(),?hero.getX(),?hero.getY(),?null);??
????}??

????/**?畫子彈?*/??
????public?void?paintBullets(Graphics?g)?{??
????????for?(int?i?=?0;?i?????????????Bullet?b?=?bullets[i];??
????????????g.drawImage(b.getImage(),?b.getX()?-?b.getWidth()?/?2,?b.getY(),??
????????????????????null);??
????????}??
????}??

????/**?畫飛行物?*/??
????public?void?paintFlyingObjects(Graphics?g)?{??
????????for?(int?i?=?0;?i?????????????FlyingObject?f?=?flyings[i];??
????????????g.drawImage(f.getImage(),?f.getX(),?f.getY(),?null);??
????????}??
????}??

????/**?畫分數(shù)?*/??
????public?void?paintScore(Graphics?g)?{??
????????int?x?=?10;?//?x坐標??
????????int?y?=?25;?//?y坐標??
????????Font?font?=?new?Font(Font.SANS_SERIF,?Font.BOLD,?22);?//?字體??
????????g.setColor(new?Color(0xFF0000));??
????????g.setFont(font);?//?設置字體??
????????g.drawString("SCORE:"?+?score,?x,?y);?//?畫分數(shù)??
????????y=y+20;?//?y坐標增20??
????????g.drawString("LIFE:"?+?hero.getLife(),?x,?y);?//?畫命??
????}??

????/**?畫游戲狀態(tài)?*/??
????public?void?paintState(Graphics?g)?{??
????????switch?(state)?{??
????????case?START:?//?啟動狀態(tài)??
????????????g.drawImage(start,?0,?0,?null);??
????????????break;??
????????case?PAUSE:?//?暫停狀態(tài)??
????????????g.drawImage(pause,?0,?0,?null);??
????????????break;??
????????case?GAME_OVER:?//?游戲終止狀態(tài)??
????????????g.drawImage(gameover,?0,?0,?null);??
????????????break;??
????????}??
????}??

????public?static?void?main(String[]?args)?{??
????????JFrame?frame?=?new?JFrame("Fly");??
????????ShootGame?game?=?new?ShootGame();?//?面板對象??
????????frame.add(game);?//?將面板添加到JFrame中??
????????frame.setSize(WIDTH,?HEIGHT);?//?設置大小??
????????frame.setAlwaysOnTop(true);?//?設置其總在最上??
????????frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);?//?默認關閉操作??
????????frame.setIconImage(new?ImageIcon("images/icon.jpg").getImage());?//?設置窗體的圖標??
????????frame.setLocationRelativeTo(null);?//?設置窗體初始位置??
????????frame.setVisible(true);?//?盡快調用paint??

????????game.action();?//?啟動執(zhí)行??
????}??

????/**?啟動執(zhí)行代碼?*/??
????public?void?action()?{??
????????//?鼠標監(jiān)聽事件??
????????MouseAdapter?l?=?new?MouseAdapter()?{??
????????????@Override??
????????????public?void?mouseMoved(MouseEvent?e)?{?//?鼠標移動??
????????????????if?(state?==?RUNNING)?{?//?運行狀態(tài)下移動英雄機--隨鼠標位置??
????????????????????int?x?=?e.getX();??
????????????????????int?y?=?e.getY();??
????????????????????hero.moveTo(x,?y);??
????????????????}??
????????????}??

????????????@Override??
????????????public?void?mouseEntered(MouseEvent?e)?{?//?鼠標進入??
????????????????if?(state?==?PAUSE)?{?//?暫停狀態(tài)下運行??
????????????????????state?=?RUNNING;??
????????????????}??
????????????}??

????????????@Override??
????????????public?void?mouseExited(MouseEvent?e)?{?//?鼠標退出??
????????????????if?(state?==?RUNNING)?{?//?游戲未結束，則設置其為暫停??
????????????????????state?=?PAUSE;??
????????????????}??
????????????}??

????????????@Override??
????????????public?void?mouseClicked(MouseEvent?e)?{?//?鼠標點擊??
????????????????switch?(state)?{??
????????????????case?START:??
????????????????????state?=?RUNNING;?//?啟動狀態(tài)下運行??
????????????????????break;??
????????????????case?GAME_OVER:?//?游戲結束，清理現(xiàn)場??
????????????????????flyings?=?new?FlyingObject[0];?//?清空飛行物??
????????????????????bullets?=?new?Bullet[0];?//?清空子彈??
????????????????????hero?=?new?Hero();?//?重新創(chuàng)建英雄機??
????????????????????score?=?0;?//?清空成績??
????????????????????state?=?START;?//?狀態(tài)設置為啟動??
????????????????????break;??
????????????????}??
????????????}??
????????};??
????????this.addMouseListener(l);?//?處理鼠標點擊操作??
????????this.addMouseMotionListener(l);?//?處理鼠標滑動操作??

????????timer?=?new?Timer();?//?主流程控制??
????????timer.schedule(new?TimerTask()?{??
????????????@Override??
????????????public?void?run()?{??
????????????????if?(state?==?RUNNING)?{?//?運行狀態(tài)??
????????????????????enterAction();?//?飛行物入場??
????????????????????stepAction();?//?走一步??
????????????????????shootAction();?//?英雄機射擊??
????????????????????bangAction();?//?子彈打飛行物??
????????????????????outOfBoundsAction();?//?刪除越界飛行物及子彈??
????????????????????checkGameOverAction();?//?檢查游戲結束??
????????????????}??
????????????????repaint();?//?重繪，調用paint()方法??
????????????}??

????????},?intervel,?intervel);??
????}??

????int?flyEnteredIndex?=?0;?//?飛行物入場計數(shù)??

????/**?飛行物入場?*/??
????public?void?enterAction()?{??
????????flyEnteredIndex++;??
????????if?(flyEnteredIndex?%?40?==?0)?{?//?400毫秒生成一個飛行物--10*40??
????????????FlyingObject?obj?=?nextOne();?//?隨機生成一個飛行物??
????????????flyings?=?Arrays.copyOf(flyings,?flyings.length?+?1);??
????????????flyings[flyings.length?-?1]?=?obj;??
????????}??
????}??

????/**?走一步?*/??
????public?void?stepAction()?{??
????????for?(int?i?=?0;?i?????????????FlyingObject?f?=?flyings[i];??
????????????f.step();??
????????}??

????????for?(int?i?=?0;?i?????????????Bullet?b?=?bullets[i];??
????????????b.step();??
????????}??
????????hero.step();?//?英雄機走一步??
????}??

????/**?飛行物走一步?*/??
????public?void?flyingStepAction()?{??
????????for?(int?i?=?0;?i?????????????FlyingObject?f?=?flyings[i];??
????????????f.step();??
????????}??
????}??

????int?shootIndex?=?0;?//?射擊計數(shù)??

????/**?射擊?*/??
????public?void?shootAction()?{??
????????shootIndex++;??
????????if?(shootIndex?%?30?==?0)?{?//?300毫秒發(fā)一顆??
????????????Bullet[]?bs?=?hero.shoot();?//?英雄打出子彈??
????????????bullets?=?Arrays.copyOf(bullets,?bullets.length?+?bs.length);?//?擴容??
????????????System.arraycopy(bs,?0,?bullets,?bullets.length?-?bs.length,??
????????????????????bs.length);?//?追加數(shù)組??
????????}??
????}??

????/**?子彈與飛行物碰撞檢測?*/??
????public?void?bangAction()?{??
????????for?(int?i?=?0;?i?????????????Bullet?b?=?bullets[i];??
????????????bang(b);?//?子彈和飛行物之間的碰撞檢查??
????????}??
????}??

????/**?刪除越界飛行物及子彈?*/??
????public?void?outOfBoundsAction()?{??
????????int?index?=?0;?//?索引??
????????FlyingObject[]?flyingLives?=?new?FlyingObject[flyings.length];?//?活著的飛行物??
????????for?(int?i?=?0;?i?????????????FlyingObject?f?=?flyings[i];??
????????????if?(!f.outOfBounds())?{??
????????????????flyingLives[index++]?=?f;?//?不越界的留著??
????????????}??
????????}??
????????flyings?=?Arrays.copyOf(flyingLives,?index);?//?將不越界的飛行物都留著??

????????index?=?0;?//?索引重置為0??
????????Bullet[]?bulletLives?=?new?Bullet[bullets.length];??
????????for?(int?i?=?0;?i?????????????Bullet?b?=?bullets[i];??
????????????if?(!b.outOfBounds())?{??
????????????????bulletLives[index++]?=?b;??
????????????}??
????????}??
????????bullets?=?Arrays.copyOf(bulletLives,?index);?//?將不越界的子彈留著??
????}??

????/**?檢查游戲結束?*/??
????public?void?checkGameOverAction()?{??
????????if?(isGameOver()==true)?{??
????????????state?=?GAME_OVER;?//?改變狀態(tài)??
????????}??
????}??

????/**?檢查游戲是否結束?*/??
????public?boolean?isGameOver()?{??

????????for?(int?i?=?0;?i?????????????int?index?=?-1;??
????????????FlyingObject?obj?=?flyings[i];??
????????????if?(hero.hit(obj))?{?//?檢查英雄機與飛行物是否碰撞??
????????????????hero.subtractLife();?//?減命??
????????????????hero.setDoubleFire(0);?//?雙倍火力解除??
????????????????index?=?i;?//?記錄碰上的飛行物索引??
????????????}??
????????????if?(index?!=?-1)?{??
????????????????FlyingObject?t?=?flyings[index];??
????????????????flyings[index]?=?flyings[flyings.length?-?1];??
????????????????flyings[flyings.length?-?1]?=?t;?//?碰上的與最后一個飛行物交換??

????????????????flyings?=?Arrays.copyOf(flyings,?flyings.length?-?1);?//?刪除碰上的飛行物??
????????????}??
????????}??

????????return?hero.getLife()?<=?0;??
????}??

????/**?子彈和飛行物之間的碰撞檢查?*/??
????public?void?bang(Bullet?bullet)?{??
????????int?index?=?-1;?//?擊中的飛行物索引??
????????for?(int?i?=?0;?i?????????????FlyingObject?obj?=?flyings[i];??
????????????if?(obj.shootBy(bullet))?{?//?判斷是否擊中??
????????????????index?=?i;?//?記錄被擊中的飛行物的索引??
????????????????break;??
????????????}??
????????}??
????????if?(index?!=?-1)?{?//?有擊中的飛行物??
????????????FlyingObject?one?=?flyings[index];?//?記錄被擊中的飛行物??

????????????FlyingObject?temp?=?flyings[index];?//?被擊中的飛行物與最后一個飛行物交換??
????????????flyings[index]?=?flyings[flyings.length?-?1];??
????????????flyings[flyings.length?-?1]?=?temp;??

????????????flyings?=?Arrays.copyOf(flyings,?flyings.length?-?1);?//?刪除最后一個飛行物(即被擊中的)??

????????????//?檢查one的類型(敵人加分，獎勵獲取)??
????????????if?(one?instanceof?Enemy)?{?//?檢查類型，是敵人，則加分??
????????????????Enemy?e?=?(Enemy)?one;?//?強制類型轉換??
????????????????score?+=?e.getScore();?//?加分??
????????????}?else?{?//?若為獎勵，設置獎勵??
????????????????Award?a?=?(Award)?one;??
????????????????int?type?=?a.getType();?//?獲取獎勵類型??
????????????????switch?(type)?{??
????????????????case?Award.DOUBLE_FIRE:??
????????????????????hero.addDoubleFire();?//?設置雙倍火力??
????????????????????break;??
????????????????case?Award.LIFE:??
????????????????????hero.addLife();?//?設置加命??
????????????????????break;??
????????????????}??
????????????}??
????????}??
????}??

????/**?
?????*?隨機生成飛行物?
?????*??
?????*?@return?飛行物對象?
?????*/??
????public?static?FlyingObject?nextOne()?{??
????????Random?random?=?new?Random();??
????????int?type?=?random.nextInt(20);?//?[0,20)??
????????if?(type?????????????return?new?Bee();??
????????}?else?{??
????????????return?new?Airplane();??
????????}??
????}??
}

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