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java400行能干啥?不如寫個飛翔小鳥游戲吧

2021-06-16 19:12:49 其他

宣告:該專案是牛客網的一個開源專案

飛翔小鳥游戲

  • 文章目錄
  • 一 效果圖
  • 二 思維導圖
    • 1.類的屬性關系
    • 2.類的相關方法
  • 三 設計步驟
    • 1.素材準備
    • 2.預備知識及其運用
    • 3.大體流程
  • 四 原始碼
    • 1.游戲類
    • 2.地面類
    • 3.小鳥類
    • 4.柱子類

文章目錄

一 效果圖

在這里插入圖片描述

在這里插入圖片描述

二 思維導圖

1.類的屬性關系

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飛翔小鳥游戲類
小鳥類
游戲分數
開始結束背景圖
游戲運行狀態
位置坐標
影像長寬
速度
位移傾角
小鳥圖形
地面類
位置坐標
影像長寬
地面影像
柱子類
位置坐標
影像長寬
柱子影像

2.類的相關方法

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game
Bird
BirdGame
BirdGame-構造器
paint--繪制方法
action--游戲運行
main--主函式啟動
Bird--構造器
fly--飛行動作
step--移動
flappy--飛行重置
hit--判斷是否撞到柱子或地面
Column
Column--構造器
step--移動
Ground
Ground--構造器
step--移動

三 設計步驟

1.素材準備

相關的素材我放到了github倉庫,
github地址https://github.com/ORikkaO/BirdGame

2.預備知識及其運用

1.面向物件的封裝:設計包裝出小鳥、地面、柱子、游戲四個類,
2.swing和awt包:圖形界面工具,繪制出游戲場景,
3.Math類:運用atan等方法輔助完成小鳥旋轉角度轉換,
4.事件監聽器:運用滑鼠監聽器完成游戲狀態轉換及小鳥移動,
5.多執行緒:該專案就用到了一個sleep休眠,

相關的知識用到的不多,一邊做一邊學習(熟悉)運用就好,

3.大體流程

1.繪制面板,放入背景圖,
2.設計地面、柱子類完成移動的效果(移動方法實作),
3.設計小鳥,完成飛行軌跡、與柱子是否碰撞的方法等,
4.設計游戲類,完成游戲類界面的繪制,
5.設計游戲開始的方法與流程,
6.增加滑鼠監聽器完成對小鳥飛行及游戲運行的控制,

四 原始碼

1.游戲類

package game;

import javax.imageio.ImageIO;
import java.util.*;

import javax.swing.*;

import java.awt.Graphics;
import java.awt.event.MouseAdapter;
import java.awt.event.*;
import java.awt.image.BufferedImage;
import javax.imageio.*;
import java.awt.*;

public class BirdGame extends JPanel {
	
	
	Image background;//背景圖片
	Image startImage;//開始圖片
	Image overImage;//游戲結束圖片
	Ground ground;//地面
	Column column1,column2;//兩根柱子
	Bird bird;//小鳥
	int score;//游戲分數
	int state;//游戲狀態
	//狀態常量
	public static final int START=0;//開始
	public static final int RUNNING=1;//運行
	public static final int GAME_OVER=2;//結束
	
	public BirdGame() throws Exception
	{
		//初始背景圖片
		//background = new ImageIcon("D:\\java\\elipse\\project_workplace\\Bird\\src\\resources\\bg.png").getImage();//絕對路徑
		//background = new ImageIcon("src\\resources\\bg.png").getImage();//相對路徑,一開始默認位置是Bird專案檔案夾
		background = new ImageIcon("./source/bg.png").getImage();
		startImage = new ImageIcon("./source/start.png").getImage();
		overImage=new ImageIcon("./source/gameover.png").getImage();
		//初始化地面、柱子、小鳥、分號、狀態
		ground=new Ground();
		column1=new Column(1);
		column2=new Column(2);
		bird=new Bird();
		score=0;
		state=0;
	}
	
	public void paint(Graphics g)
	{
		//繪制背景
		g.drawImage(background, 0, 0,null);
		//繪制地面
		g.drawImage(ground.image, ground.x, ground.y, null);
		//繪制柱子
		g.drawImage(column1.image,column1.x-column1.width/2,column1.y-column1.height/2,null);
		g.drawImage(column2.image,column2.x-column2.width/2,column2.y-column2.height/2,null);
		//繪制小鳥
		Graphics2D g2=(Graphics2D) g;
		g2.rotate(-bird.alpha,bird.x,bird.y);
		g.drawImage(bird.image,bird.x-bird.width/2,bird.y-bird.height/2,null);
		g2.rotate(bird.alpha,bird.x,bird.y);
		//繪制分數
		Font f=new Font(Font.SANS_SERIF,Font.BOLD,40);
		g.setFont(f);
		g.drawString(""+score, 40, 60);
		g.setColor(Color.WHITE);
		g.drawString(""+score,40-3, 60-3);//一個陰影效果
		//繪制開始和結束界面
		switch(state)
		{
		case START:
			g.drawImage(startImage, 0, 0, null);
			break;
		case GAME_OVER:
			g.drawImage(overImage, 0, 0, null);
			break;
		}
	}
	
	public void action() throws Exception
	{
		//不斷重復和繪制
		MouseListener l=new MouseAdapter()
		{
			public void mousePressed(MouseEvent e)
			{
				try {
					switch(state) {
					case START:
						//在開始前按下滑鼠轉為運行狀態
						state=RUNNING;
						break;
					case RUNNING:
						//在運行狀態,按下滑鼠小鳥向上飛行
						bird.flappy();
						break;
					case GAME_OVER:
						//在結束狀態,按下滑鼠重置資料變為開始
						column1=new Column(1);
						column2=new Column(2);
						bird=new Bird();
						score=0;
						state=START;
						break;
					}
				}
				catch (Exception ex)
				{
					ex.printStackTrace();
				}
			}
			
		};
		addMouseListener(l);
		while(true)
		{
			switch(state)
			{
			case START:
				bird.fly();
				ground.step();
				break;
			case RUNNING:
				ground.step();
				column1.step();
				column2.step();
				bird.fly();
				bird.step();
//				if(bird.x==column1.x||bird.x==column2.x)
//				{
//					score++;
//				}
				score++;
				//檢測是否碰撞
				if(bird.hit(ground)||bird.hit(column1)||bird.hit(column2))
				{
					state=GAME_OVER;
				}
				break;
			}	
			//休眠1000/60毫秒
			Thread.sleep(1000/60);
			repaint();
		}
	}
	
	//啟動方法
	
	public static void main(String[] args) throws Exception
	{
		
		JFrame frame=new JFrame();
		BirdGame game=new BirdGame();
		frame.add(game);
		frame.setSize(440,670);
		frame.setLocationRelativeTo(null);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.setVisible(true);
		game.action();
	}
	
}

2.地面類

package game;

import javax.swing.*;
import java.awt.*;

public class Ground {

	Image image;
	
	int x,y;//位置
	
	int width,height;
	
	//地面初始化
	public Ground() throws Exception
	{
		image =new ImageIcon("source/ground.png").getImage();
		width=image.getWidth(null);
		height=image.getHeight(null);
		x=0;
		y=500;
	}
	
	//左移
	public void step()
	{
		x-=4;
		if(x<=-109)
		{
			x=0;
		}
	}
	
	
}

3.小鳥類

package game;
import java.awt.*;
import javax.swing.*;
import javax.imageio.ImageIO;

public class Bird {

	Image image;
	int x,y;
	int width,height;
	int size;
	//重力加速度
	double g;
	//位移間隔時間
	double t;
	//最初速度
	double v0;
	//當前上拋速度
	double speed;
	//經過時間t后的位移
	double s;
	//小鳥的傾角(弧度)
	double alpha;
	
	//一組圖片記錄小鳥影片幀
	Image[] images;
	//幀數下標
	int index;
	
	public Bird() throws Exception
	{
		image=new ImageIcon("source/0.png").getImage();
		width = image.getWidth(null);
		height = image.getHeight(null);
		x=132;
		y=280;
		size=40;
		//位移引數
		g=4;
		v0=20;
		t=0.25;
		speed=v0;
		s=0;
		//小鳥偏轉角度
		alpha=0;
		
		//初始化影片幀引數
		images=new Image[8];
		
		for(int i=0;i<8;i++)
		{
			images[i]=new ImageIcon("source/"+i+".png").getImage();
		}
		index=0;
		
	}
	
	//飛行動作(變化一幀)
	public void fly()
	{
		index++;
		image=images[(index/12)%8];
	}
	
	//移動一步
	public void step()
	{
		double v0=speed;
		//計算上跑位移
		s=v0*t+g*t*t/2;
		//計算鳥的坐標
		y=y-(int)s;
		//計算下次移動速度
		double v=v0-g*t;
		speed =v;
		//計算傾角(反正切函式)
		alpha=Math.atan(s/8);
		
	}
	
	//向上飛行
	public void flappy()
	{
		//重置速度
		speed=v0;
	}
	
	//檢測小鳥是否碰撞到地面
	public boolean hit(Ground ground)
	{
		boolean hit =y+size/2>ground.y;
		if(hit)
		{
			y=ground.y-size/2;
			alpha=Math.PI/2;
		}
		return hit;
	}
	
	//檢測小鳥是否撞到柱子
	public boolean hit(Column column)
	{
		//檢測是否在柱子范圍內
		if(x>column.x-column.width/2-size/2&&x<column.x+column.width/2+size/2)
		{
			if(y>column.y-column.gap/2+size/2&&y<column.y+column.gap/2-size/2) return false;
			return true;
		}
		return false;
	}
}

4.柱子類

package game;

import java.util.*;
import java.awt.*;

import javax.imageio.ImageIO;
import javax.swing.*;

public class Column {

	Image image;
	
	int x,y;
	int width,height;
	//柱子之間縫隙
	int gap;
	//柱子之間的距離
	int distance;
	Random random =new Random();
	
	//初始第N根柱子
	
	public Column(int n) throws Exception
	{
		image=new ImageIcon("source/column.png").getImage();
		width=image.getWidth(null);
		height=image.getHeight(null);
		gap=144;
		distance=245;
		x=550+(n-1)*distance;
		y=random.nextInt(218)+132;
	}
	
	public void step()
	{
		x-=4;
		if(x<= -width/2)
		{
			x=distance*2-width/2;
			y=random.nextInt(218);
		}
	}
}

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