Javaミニプロジェクトの戦車大戦単機1.0版

単機1.0版には6つのクラスファイルが含まれています。
TankClient.java：主な執行部分、プロジェクトの大執事
Tank.java：Tank種類を実現して、戦車の運動を模擬します。
Missile.java：Missile類、模擬弾の動きを実現する。
Explode.java：Explodeクラスを実現し、爆発の発生をシミュレートします。
Wall.java：Wall類、アナログ壁を実現する
Blood.java：Blood類を実現して、血の条を模擬します。
主な操作:
矢印キーが移動を実現します。ctrlボタンで弾丸を発射する。Aボタンで大きな手を打つF 2復旧
TankClient.java

import java.awt.*;
import java.awt.event.*;
import java.util.List;
import java.util.ArrayList;

public class TankClient extends Frame {

	public static final int GAME_WIDTH = 800;
	public static final int GAME_HEIGHT = 600;
	
	Tank myTank = new Tank(50, 50, true, Tank.Direction.STOP, this);
	
	Wall w1 = new Wall(100, 200, 20, 150, this) , w2 = new Wall(300, 100, 300, 20, this);
	
	List explodes = new ArrayList();
	List missiles = new ArrayList();
	List tanks = new ArrayList();
	Image offScreenImage = null;
	
	Blood b = new Blood();
	
	public void paint(Graphics g) {
		g.drawString("missiles count:" + missiles.size(), 10, 50);
		g.drawString("explodes count:" + explodes.size(), 10, 70);
		g.drawString("tanks    count:" + tanks.size() , 10, 90);
		g.drawString("tanks     life:" + myTank.getLife(), 10, 110);
		
		if(tanks.size() <= 0) {
			for(int i=0;i<5;i++) {
				tanks.add(new Tank(150+40*(i+1), 300+(+(50+40*i)%100), false, Tank.Direction.D, this));
			}
		}
		
		for(int i=0;i

Tank.java

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

public class Tank {
	public static final int XSPEED = 5;
	public static final int YSPEED = 5;
	
	public static final int WIDTH = 30;
	public static final int HEIGHT = 30;
	
	private boolean live = true;
	private BloodBar bb = new BloodBar();
	
	private int life = 100;
	
	public int getLife() {
		return life;
	}

	public void setLife(int life) {
		this.life = life;
	}

	public boolean isLive() {
		return live;
	}

	public void setLive(boolean live) {
		this.live = live;
	}

	TankClient tc;
	
	private boolean good;
	
	public boolean isGood() {
		return good;
	}

	private int x , y;
	private int oldX, oldY;
	
	private static Random r = new Random();
	
	private boolean bL = false, bU = false, bR = false, bD = false;
	enum Direction {L, LU, U, RU, R, RD, D, LD , STOP};
	
	private Direction dir = Direction.STOP;
	private Direction ptDir = Direction.D;
	
	private int step = r.nextInt(12) + 3;
	
	public Tank(int x, int y, boolean good) {
		super();
		this.x = x;
		this.y = y;
		this.oldX = x;
		this.oldY = y;
		this.good = good;
	}
	
	public Tank(int x, int y, boolean good, Direction dir, TankClient tc) {
		this(x, y, good);
		this.dir = dir;
		this.tc = tc;
	}
	
	public void draw(Graphics g) {
		if(!live) {
			if(!good) {
				tc.tanks.remove(this);
			}
			return;
		}
		
		Color c = g.getColor();
		if(good) g.setColor(Color.RED);
		else g.setColor(Color.BLUE);
		g.fillOval(x, y, WIDTH, HEIGHT);
		g.setColor(c);
		
		if(good) bb.draw(g);
		
		int xx = x + Tank.WIDTH/2 , yy = y + Tank.HEIGHT/2;
		int r = Tank.WIDTH/2;
		int rr = (int)(1.414*(double)r/2.0);
		
		switch(ptDir) {
		case L : g.drawLine(xx, yy, xx-r, yy); break;
		case LU : g.drawLine(xx, yy, xx-rr, yy-rr); break;
		case U : g.drawLine(xx, yy, xx, yy-r); break;
		case RU : g.drawLine(xx, yy, xx+rr, yy-rr); break;
		case R : g.drawLine(xx, yy, xx+r, yy); break;
		case RD : g.drawLine(xx, yy, xx+rr, yy+rr); break;
		case D : g.drawLine(xx, yy, xx, yy+r); break;
		case LD : g.drawLine(xx, yy, xx-rr, yy+rr); break;
		default : break;
		}
		
		move();
	}
	
	void move() {
		this.oldX = x;
		this.oldY = y;
		
		switch(dir) {
		case L : x -= XSPEED; break;
		case LU : x-= XSPEED; y -= YSPEED; break;
		case U : y -= YSPEED; break;
		case RU : x += XSPEED; y -= YSPEED; break;
		case R : x += XSPEED; break;
		case RD : x += XSPEED; y += YSPEED; break;
		case D : y += YSPEED; break;
		case LD : x -= XSPEED; y += YSPEED; break;
		default : break;
		}
		if(dir != Direction.STOP) {
			this.ptDir = this.dir;
		}
		
		if(x < 0) x = 0;
		if(y < 30) y = 30;
		if(x + Tank.WIDTH > TankClient.GAME_WIDTH) x = TankClient.GAME_WIDTH - Tank.WIDTH;
		if(y + Tank.HEIGHT > TankClient.GAME_HEIGHT) y = TankClient.GAME_HEIGHT - Tank.HEIGHT;
		
		if(!good) {
			Direction[] dirs = Direction.values();
			if(step == 0) {
				step = r.nextInt(12) + 3;
				int rn = r.nextInt(dirs.length);
				dir = dirs[rn];
			}
			step --;
			
			if(r.nextInt(40) > 38) this.fire();
		}
		
	}
	
	private void stay() {
		x = oldX;
		y = oldY;
	}
	
	public void keyPressed(KeyEvent e) {
		int key = e.getKeyCode();
		switch(key) {
		case KeyEvent.VK_F2 : 
			if(!this.live) {
				this.live = true;
				this.life = 100;
			}
			break;
		case KeyEvent.VK_LEFT : bL = true; break;
		case KeyEvent.VK_UP : bU = true; break;
		case KeyEvent.VK_RIGHT : bR = true; break;
		case KeyEvent.VK_DOWN : bD = true; break;
		}
		locateDirection();
	}
	
	void locateDirection() {
		if(bL && !bU && !bR && !bD) dir = Direction.L;
		else if(bL && bU && !bR && !bD) dir = Direction.LU;
		else if(!bL && bU && !bR && !bD) dir = Direction.U;
		else if(!bL && bU && bR && !bD) dir = Direction.RU;
		else if(!bL && !bU && bR && !bD) dir = Direction.R;
		else if(!bL && !bU && bR && bD) dir = Direction.RD;
		else if(!bL && !bU && !bR && bD) dir = Direction.D;
		else if(bL && !bU && !bR && bD) dir = Direction.LD;
		else if(!bL && !bU && !bR && !bD) dir = Direction.STOP;
	}
	
	public void keyReleased(KeyEvent e) {
		int key = e.getKeyCode();
		switch(key) {
		case KeyEvent.VK_CONTROL : fire(); break;
		case KeyEvent.VK_LEFT : bL = false; break;
		case KeyEvent.VK_UP : bU = false; break;
		case KeyEvent.VK_RIGHT : bR = false; break;
		case KeyEvent.VK_DOWN : bD = false; break;
		case KeyEvent.VK_A : superFire(); break;
		}
		locateDirection();
	}
	
	public void fire() {
		if(!live) return;
		int x = this.x + Tank.WIDTH/2 - Missile.WIDTH/2;
		int y = this.y + Tank.HEIGHT/2 - Missile.WIDTH/2;
		Missile m = new Missile(x, y, good, ptDir, this.tc);
		tc.missiles.add(m);
	}
	
	public void fire(Direction dir) {
		if(!live) return;
		int x = this.x + Tank.WIDTH/2 - Missile.WIDTH/2;
		int y = this.y + Tank.HEIGHT/2 - Missile.WIDTH/2;
		Missile m = new Missile(x, y, good, dir, this.tc);
		tc.missiles.add(m);
	}
	
	public Rectangle getRect() {
		return new Rectangle(x, y, WIDTH, HEIGHT);
	}
	
	public boolean collidesWithWall(Wall w) {
		if(this.live && this.getRect().intersects(w.getRect())) {
			this.stay();
			return true;
		}
		return false;
	}
	
	public boolean collidesWithTanks(java.util.List tanks) {
		for(int i=0;i= 0 && b.isLive() && this.getRect().intersects(b.getRect())) {
			this.setLife(this.getLife()+40 >= 100 ? 100 : this.getLife()+40);
			b.setLive(false);
			return true;
		}
		return false;
	}
	
}

Missile.java

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

public class Missile {
	public static final int XSPEED = 10;
	public static final int YSPEED = 10;
	
	public static final int WIDTH = 10;
	public static final int HEIGHT = 10;
	
	int x , y;
	Tank.Direction dir;
	
	private boolean good;
	private boolean live = true;
	
	private TankClient tc;
	
	public boolean isLive() {
		return live;
	}

	public Missile(int x, int y, Tank.Direction dir) {
		this.x = x;
		this.y = y;
		this.dir = dir;
	}
	
	public Missile(int x, int y, boolean good, Tank.Direction dir, TankClient tc) {
		this(x, y, dir);
		this.good = good;
		this.tc = tc;
	}
	
	public void draw(Graphics g) {
		if(!live) {
			tc.missiles.remove(this);
			return;
		}
		
		Color c = g.getColor();
		g.setColor(Color.BLACK);
		g.fillOval(x, y, WIDTH, HEIGHT);
		g.setColor(c);
		
		move();
	}
	
	private void move() {
		switch(dir) {
		case L : x -= XSPEED; break;
		case LU : x-= XSPEED; y -= YSPEED; break;
		case U : y -= YSPEED; break;
		case RU : x += XSPEED; y -= YSPEED; break;
		case R : x += XSPEED; break;
		case RD : x += XSPEED; y += YSPEED; break;
		case D : y += YSPEED; break;
		case LD : x -= XSPEED; y += YSPEED; break;
		}
		
		if(x < 0 || y < 0 || x > TankClient.GAME_WIDTH || y > TankClient.GAME_HEIGHT) {
			live = false;
		}
	}
	
	public Rectangle getRect() {
		return new Rectangle(x, y, WIDTH, HEIGHT);
	}
	
	public boolean hitTank(Tank t) {
		if(this.live && this.getRect().intersects(t.getRect()) && t.isLive() && this.good != t.isGood()) {
			if(t.isGood()) {
				t.setLife(t.getLife()-20);
				if(t.getLife()<=0) t.setLive(false);
			} else {
				t.setLive(false);
			}
			this.live = false;
			Explode e = new Explode(x, y, tc);
			tc.explodes.add(e);
			return true;
		}
		return false;
	}
	
	public boolean hitTanks(List tanks) {
		for(int i=0;i

Explode.java

import java.awt.*;

public class Explode {
	int x, y;
	private boolean live = true;
	
	private TankClient tc;
	
	int [] diameter = {4, 8, 12, 18, 26, 32, 50, 30, 14, 6};
	int step = 0;
	
	public Explode(int x, int y, TankClient tc) {
		this.x = x;
		this.y = y;
		this.tc = tc;
	}
	
	public void draw(Graphics g) {
		if(!live) {
			tc.explodes.remove(this);
			return;
		}
		
		if(step == diameter.length) {
			live = false;
			step = 0;
			return;
		}
		
		Color c = g.getColor();
		g.setColor(Color.ORANGE);
		g.fillOval(x-diameter[step]/2, y-diameter[step]/2, diameter[step], diameter[step]);
		g.setColor(c);
		step ++;
	}
	
}

Wall.java

import java.awt.*;

public class Wall {
	int x, y, w, h;
	TankClient tc;
	
	public Wall(int x, int y, int w, int h, TankClient tc) {
		this.x = x;
		this.y = y;
		this.w = w;
		this.h = h;
		this.tc = tc;
	}
	
	public void draw(Graphics g) {
		g.fillRect(x, y, w, h);
	}
	
	public Rectangle getRect() {
		return new Rectangle(x, y, w, h);
	}
}

Blood.java

import java.awt.*;

public class Blood {
	int x, y, w, h;
	TankClient tc;
	
	private int step = 0;
	private int steptime = 0;
	private boolean live = true;
	
	

	public boolean isLive() {
		return live;
	}

	public void setLive(boolean live) {
		this.live = live;
	}

	private int[][] pos = {
			{350,300},{330,300},{220,220},{150,200},{170,230}
	};
	
	public Blood() {
		x = pos[0][0];
		y = pos[0][1];
		w = h = 15;
	}
	
	public void draw(Graphics g) {
		steptime ++;
		if(!live && steptime == 100) {
			live = true;
			steptime = 0;
		}
		if(!live) return;
		Color c = g.getColor();
		g.setColor(Color.MAGENTA);
		g.fillRect(x, y, w, h);
		g.setColor(c);
		
		move();
	}
	
	private void move() {
		if(steptime == 50) {
			step ++;
			steptime = 0;
		}
		if(step == pos.length) step = 0;
		x = pos[step][0];
		y = pos[step][1];
	}
	
	public Rectangle getRect() {
		return new Rectangle(x, y, w, h);
	}
}

プロジェクトのコメント:
ダブルバッファを使って点滅現象の原因を除去します。再描画の頻度が速すぎて、paint方法はまだ完成していません。解決方法を逐条表示します。すべてのものを仮想画像に描き、一度に表示します。