Java游戏-牧羊犬与绵羊

这是一款非常简单的Java游戏，以修正到半截的LGame-Simple-0.2.5开发（也就是LGame-Simple-0.2.5-test版）。

该游戏目前内置有关卡十一关（可配置），以绘制的牧羊犬与绵羊为主要角色，其中牧羊犬将根据玩家鼠标所在位置移动，而绵羊则始终远离牧羊犬，如何利用此一特性，驱赶指定数量绵羊到达指定羊圈中呢？这个，也就是本游戏的游戏目标了。

游戏源码如下：

package org.loon.test; import java.awt.Color; import java.awt.Graphics2D; import java.awt.Transparency; import java.awt.event.KeyEvent; import java.awt.event.MouseEvent; import java.awt.image.BufferedImage; import java.io.InputStream; import java.io.InputStreamReader; import java.io.StreamTokenizer; import org.loon.framework.game.simple.GameScene; import org.loon.framework.game.simple.action.IAction; import org.loon.framework.game.simple.core.Deploy; import org.loon.framework.game.simple.core.LSystem; import org.loon.framework.game.simple.core.LTimer; import org.loon.framework.game.simple.core.LTimerContext; import org.loon.framework.game.simple.core.ResourceLoader; import org.loon.framework.game.simple.core.Screen; import org.loon.framework.game.simple.utils.GraphicsUtils; /** * Copyright 2008 - 2009 * * Licensed under the Apache License, Version 2.0 (the "License"); you may not * use this file except in compliance with the License. You may obtain a copy of * the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations under * the License. * * @project loonframework * @author chenpeng * @email：ceponline@yahoo.com.cn * @version 0.1 */ public class Main extends Screen { private boolean flag; // 背景色、狗的颜色、羊的颜色 final static private Color bg_c1 = new Color(60, 115, 18), bg_c2 = new Color(80, 135, 38), dog_c1 = new Color(162, 112, 6), dog_c2 = new Color(184, 156, 4), sheep_c1 = new Color(224, 222, 176), sheep_c2 = new Color(255, 255, 255); private int sheeps, dogs; private int[] sheep_f; private double dog_rate, sheep_rate; private double[] dog_px, dog_py, dog_vx, dog_vy; private double[] sheep_px, sheep_py, sheep_vx, sheep_vy; private int[] map_n, map_x, map_y, map_r, map_f; // 游戏等级、游戏时间、地图大小、关卡索引、动作桢数 private int level, gtime, maps, stage, frames; private int[] stage_dn, stage_dx, stage_dy, stage_sn, stage_sx, stage_sy, stage_cl; private int[][] stage_cn, stage_cx, stage_cy, stage_cr; private LTimer timer = new LTimer(500); // 制作一个监听类，用以判定当前关卡是否完成 private class ClickAction implements IAction { public void doAction(long timer) { if (flag) { if (level == -1) { resetLevel(); } else { int index = 0; for (int i = 0; i < maps; i++) { if (map_f[i] == 1) { index++; } } if (index == maps) { resetLevel(); } } } } } public Main() { this.level = -1; this.stage = 100; this.maps = 10; this.dogs = 10; this.sheeps = 100; this.dog_rate = 1.0D; this.sheep_rate = 1.0D; this.flag = true; this.sheep_f = new int[sheeps]; this.sheep_px = new double[sheeps]; this.sheep_py = new double[sheeps]; this.sheep_vx = new double[sheeps]; this.sheep_vy = new double[sheeps]; this.dog_px = new double[sheeps]; this.dog_py = new double[sheeps]; this.dog_vx = new double[sheeps]; this.dog_vy = new double[sheeps]; this.map_n = new int[maps]; this.map_x = new int[maps]; this.map_y = new int[maps]; this.map_r = new int[maps]; this.map_f = new int[maps]; this.stage_dn = new int[stage]; this.stage_dx = new int[stage]; this.stage_dy = new int[stage]; this.stage_sn = new int[stage]; this.stage_sx = new int[stage]; this.stage_sy = new int[stage]; this.stage_cl = new int[stage]; this.stage_cn = new int[stage][10]; this.stage_cx = new int[stage][10]; this.stage_cy = new int[stage][10]; this.stage_cr = new int[stage][10]; // 将过关判定匹配给鼠标右键点击事件 this.addMouseEvents(MouseEvent.BUTTON1, "MOUSE_CLICK", new ClickAction()); // 创建游戏背景 this.createGraphics(); // 初始化关卡数据 this.initialize(); } /** * 创建游戏背景 * */ private void createGraphics() { BufferedImage screen = GraphicsUtils.createImage(getWidth(), getHeight(), Transparency.BITMASK); Graphics2D g = screen.createGraphics(); g.setColor(bg_c1); g.fillRect(0, 0, getWidth(), getHeight()); g.setColor(bg_c2); g.fillRect(20, 20, getWidth() - 40, getHeight() - 40); g.dispose(); setBackground(screen); } /** * 加载初始数据 * */ private void initialize() { InputStream in = ResourceLoader .getResourceToInputStream("games/sheep.dat"); try { StreamTokenizer str = new StreamTokenizer(new InputStreamReader(in)); int read; while ((read = str.nextToken()) != -1) { if (read == -3) { if ("D".equals(str.sval)) { str.nextToken(); stage = (int) str.nval; str.nextToken(); stage_dn[stage] = (int) str.nval; str.nextToken(); stage_dx[stage] = (int) str.nval; str.nextToken(); stage_dy[stage] = (int) str.nval; } else if ("S".equals(str.sval)) { str.nextToken(); stage = (int) str.nval; str.nextToken(); stage_sn[stage] = (int) str.nval; str.nextToken(); stage_sx[stage] = (int) str.nval; str.nextToken(); stage_sy[stage] = (int) str.nval; } else if ("C".equals(str.sval)) { str.nextToken(); stage = (int) str.nval; str.nextToken(); int j = (int) str.nval; str.nextToken(); stage_cn[stage][j] = (int) str.nval; str.nextToken(); stage_cx[stage][j] = (int) str.nval; str.nextToken(); stage_cy[stage][j] = (int) str.nval; str.nextToken(); stage_cr[stage][j] = (int) str.nval; if (stage_cl[stage] < j) { stage_cl[stage] = j; } } } } } catch (Exception ex) { stage = 0; flag = false; } finally { try { in.close(); in = null; } catch (Exception e) { } } } /** * 绘制游戏画面 */ public void draw(Graphics2D g) { if (level == -1) { drawStart(g); return; } drawMap(g); drawDog(g); drawSheep(g); drawTitle(g); } /** * 更改游戏运行数据 */ public void alter(LTimerContext time) { frames++; if (timer.action(time.getTimeSinceLastUpdate())) { dog_rate = 0.2 * (double) frames; sheep_rate = 0.2 * (double) frames; frames = 0; gtime++; } } /** * 刷新游戏等级 * */ private void resetLevel() { level = level == -1 ? 0 : (level + 1) % (stage + 1); flag = false; gtime = 0; dogs = stage_dn[level]; for (int i = 0; i < dogs; i++) { dog_px[i] = stage_dx[level] + (int) (LSystem.random.nextDouble() * 30D); dog_py[i] = stage_dy[level] + (int) (LSystem.random.nextDouble() * 30D); dog_vx[i] = 0.0D; dog_vy[i] = 0.0D; } sheeps = stage_sn[level]; for (int j = 0; j < sheeps; j++) { sheep_px[j] = stage_sx[level] + (int) (LSystem.random.nextDouble() * 30D); sheep_py[j] = stage_sy[level] + (int) (LSystem.random.nextDouble() * 30D); sheep_vx[j] = 0.0D; sheep_vy[j] = 0.0D; sheep_f[j] = -1; } maps = stage_cl[level] + 1; for (int j = 0; j < maps; j++) { map_x[j] = stage_cx[level][j]; map_y[j] = stage_cy[level][j]; map_r[j] = stage_cr[level][j]; map_n[j] = stage_cn[level][j]; map_f[j] = 0; } } /** * 绘制游戏开始画面 * * @param g */ private void drawStart(Graphics2D g) { g.setColor(bg_c1); g.fillRect(0, 0, getWidth(), getHeight()); g.setColor(bg_c2); g.fillRect(20, 20, getWidth() - 40, getHeight() - 40); g.setColor(Color.white); g.drawString("点击屏幕开始游戏", 260, 200); } /** * 绘制游戏状态提示 * * @param g */ private void drawTitle(Graphics2D g) { g.setColor(Color.white); g.drawString("等级： " + (level + 1), 25, getHeight() - 30); g.drawString("绵羊： " + sheeps, 100, getHeight() - 30); g.drawString("猎犬： " + dogs, 185, getHeight() - 30); g.drawString("时间 : " + gtime, 255, getHeight() - 30); } /** * 绘制游戏地图 * * @param g */ private void drawMap(Graphics2D g) { double mx, my, angle; for (int i = 0; i < maps; i++) { if (map_f[i] == 0) { int j = 0; for (int k = 0; k < sheeps; k++) { mx = sheep_px[k] - (double) map_x[i]; my = sheep_py[k] - (double) map_y[i]; angle = Math.sqrt(mx * mx + my * my); if (angle < (double) map_r[i]) { j++; } } if (j == map_n[i]) { map_f[i] = 1; for (int l = 0; l < sheeps; l++) { mx = sheep_px[l] - (double) map_x[i]; my = sheep_py[l] - (double) map_y[i]; angle = Math.sqrt(mx * mx + my * my); if (angle < (double) map_r[i]) { sheep_f[l] = i; } } } g.setColor(Color.green); g.drawOval(map_x[i] - map_r[i], map_y[i] - map_r[i], map_r[i] * 2, map_r[i] * 2); g.drawString("" + map_n[i], map_x[i] - 5, map_y[i] + 5); } else if (map_f[i] == 1) { flag = true; g.setColor(Color.red); g.drawOval(map_x[i] - map_r[i], map_y[i] - map_r[i], map_r[i] * 2, map_r[i] * 2); g.drawString("" + map_n[i], map_x[i] - 5, map_y[i] + 5); } } } /** * 绘制猎犬 * * @param g */ private void drawDog(Graphics2D g) { for (int i = 0; i < dogs; i++) { double dx = (double) getMouseX() - dog_px[i]; double dy = (double) getMouseY() - dog_py[i]; for (int j = 0; j < dogs; j++) { double mx = dog_px[j] - dog_px[i]; double my = dog_py[j] - dog_py[i]; double angle = Math.sqrt(mx * mx + my * my) + 1.0D; if (angle < 40D) { dx += -mx / angle; dy += -my / angle; dog_vx[j] += mx / angle; dog_vy[j] += my / angle; } else { dx += mx / angle; dy += my / angle; } } double offset = Math.sqrt(dx * dx + dy * dy) + 1.0D; dog_vx[i] /= 1.01D; dog_vy[i] /= 1.01D; dog_vx[i] += dx / offset; dog_vy[i] += dy / offset; dog_px[i] += dog_vx[i] / dog_rate; dog_py[i] += dog_vy[i] / dog_rate; if (dog_px[i] < 0.0D) { dog_vx[i] = 0.0D; } if (dog_py[i] < 0.0D) { dog_vy[i] = 0.0D; } if (dog_px[i] > (double) (getWidth() - 5)) { dog_vx[i] = 0.0D; } if (dog_py[i] > (double) (getHeight() - 5)) { dog_vy[i] = 0.0D; } offset = Math.sqrt(dog_vx[i] * dog_vx[i] + dog_vy[i] * dog_vy[i]) + 1.0D; double vx1 = dog_vx[i] / offset; double vy1 = dog_vy[i] / offset; int x = (int) dog_px[i] - 3; int y = (int) dog_py[i] - 3; int x1 = x + (int) (vx1 * 5D); int y1 = y + (int) (vy1 * 5D); g.setColor(Color.darkGray); g.fillOval(x, y + 3, 8, 8); g.setColor(dog_c2); g.fillOval(x, y, 5, 5); g.setColor(dog_c1); g.fillOval(x1, y1, 5, 5); } } /** * 绘制绵羊 * * @param g */ private void drawSheep(Graphics2D g) { double nx, ny, angle; for (int i = 0; i < sheeps; i++) { double mx = 0.0D; double my = 0.0D; if (sheep_f[i] >= 0) { mx = (double) map_x[sheep_f[i]] - sheep_px[i]; my = (double) map_y[sheep_f[i]] - sheep_py[i]; } for (int j = 0; j < sheeps; j++) { nx = sheep_px[j] - sheep_px[i]; ny = sheep_py[j] - sheep_py[i]; angle = Math.sqrt(nx * nx + ny * ny) + 1.0D; if (angle < 15D) { mx += -nx / angle; my += -ny / angle; sheep_vx[j] += nx / angle; sheep_vy[j] += ny / angle; } else { mx += nx / angle; my += ny / angle; } } if (sheep_f[i] == -1) { for (int k = 0; k < dogs; k++) { nx = sheep_px[i] - dog_px[k]; ny = sheep_py[i] - dog_py[k]; angle = Math.sqrt(nx * nx + ny * ny) + 1.0D; if (angle < 200D) { mx += (nx / angle) * (double) sheeps; my += (ny / angle) * (double) sheeps; } } } angle = Math.sqrt(mx * mx + my * my) + 1.0D; sheep_vx[i] /= 1.1000000000000001D; sheep_vy[i] /= 1.1000000000000001D; nx = mx / angle; ny = my / angle; sheep_vx[i] += nx; sheep_vy[i] += ny; sheep_px[i] += sheep_vx[i] / sheep_rate; sheep_py[i] += sheep_vy[i] / sheep_rate; if (sheep_px[i] < 20D) { sheep_px[i] = 20D; sheep_vx[i] = 0.0D; } if (sheep_py[i] < 20D) { sheep_py[i] = 20D; sheep_vy[i] = 0.0D; } if (sheep_px[i] > (double) (getWidth() - 20)) { sheep_px[i] = getWidth() - 20; sheep_vx[i] = 0.0D; } if (sheep_py[i] > (double) (getHeight() - 20)) { sheep_py[i] = getHeight() - 20; sheep_vy[i] = 0.0D; } angle = Math.sqrt(sheep_vx[i] * sheep_vx[i] + sheep_vy[i] * sheep_vy[i]) + 1.0D; nx = sheep_vx[i] / angle; ny = sheep_vy[i] / angle; int x = (int) sheep_px[i] - 3; int y = (int) sheep_py[i] - 3; int x1 = x + (int) (nx * 5D); int y1 = y + (int) (ny * 5D); g.setColor(Color.darkGray); g.fillOval(x, y + 3, 10, 10); g.setColor(sheep_c2); g.fillOval(x, y, 7, 7); g.setColor(sheep_c1); g.fillOval(x1, y1, 7, 7); } } public void leftClick(MouseEvent e) { } public void middleClick(MouseEvent e) { } public void onKey(KeyEvent e) { } public void onKeyUp(KeyEvent e) { } public void rightClick(MouseEvent e) { } public static void main(String[] args) { GameScene frame = new GameScene("牧羊犬与绵羊", 640, 400); Deploy deploy = frame.getDeploy(); deploy.setScreen(new Main()); deploy.setLogo(false); deploy.setShowFPS(true); deploy.setFPS(100); deploy.mainLoop(); frame.showFrame(); } }

截图如下：

下载地址：http://code.google.com/p/loon-simple/downloads/list （源码在jar中）

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为LGame-Simple-0.2.5新增的几个小例子之一，在 LGame-Simple-0.2.5正式发布以前，先发点这些小东西凑文章数……

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