rpgprojectcanvas.java

j2me角色扮演的游戏代码

import java.util.Random;
import java.util.Vector;

import javax.microedition.lcdui.Font;
import javax.microedition.lcdui.Graphics;
import javax.microedition.lcdui.Image;
import javax.microedition.lcdui.game.GameCanvas;
import javax.microedition.lcdui.game.LayerManager;
import javax.microedition.media.MediaException;

public class RPGprojectcanvas extends GameCanvas implements Runnable {
	int screenwidth = getWidth();

	int screenheight = getHeight();

	int imgbackgroundwidth = 512;

	int imgbackgroundheight = 512;

	Thread t;

	Random r;

	Vector vectormessage;

	Vector vectorpicture;

	LayerManager lmscene1, lmscene2;

	String missionmessage;

	Mainrole mrole;
	
	Load load;

	Graphics g;

	String curmessage;

	Image curpicture;

	boolean catchcat = false;

	boolean catchcat2 = false;

	boolean showyesorno = false;

	boolean mainroleanswer = false;
	
	int scene=1; //check for scene

	int inputmode = 0;

	boolean iscollide = false;

	int screenx, screeny;
	
	

	int tempx = 0, tempy = 0;

	int lastscreenx, lastscreeny;

	int selecty = 152;

	protected RPGprojectcanvas() { //构造函数，初始类
		super(true);
		g = getGraphics();
		r = new Random();
		t = new Thread(this);
		vectormessage = new Vector();
		vectorpicture = new Vector();
		load = new Load();
		curmessage = null;
		missionmessage = null;
		curpicture = null;
//		if (scene==1)
		mrole = new Mainrole(load.imgrole, 16, 24, 50, 50,80,153);
//		else if  (scene==2)
//			mrole = new Mainrole(load.imgrole, 16, 24, 80, 153);
		lmscene1 = new LayerManager();
		lmscene2 = new LayerManager();

		try {
			//		addendshowtalk();
			load.p.start();
		} catch (MediaException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		t.start();
	}

	int getrand(int m) {
		int n = r.nextInt();
		if (n < 0)
			n *= -1;
		n %= m;
		return n;
	}

	public void screenmove(int increasex, int increasey) { //屏幕移动函数

		screenx = screenx + increasex;
		screeny = screeny + increasey;
		lastscreenx = increasex;
		lastscreeny = increasey;
	}

	void screenunmove() {//屏幕负移动函数
		screenmove(-lastscreenx, -lastscreeny);
	}

	void draw() { //绘画函数
		//清屏
		g.setColor(255, 255, 255);
		g.fillRect(0, 0, getWidth(), getHeight());
		//设置window
		if (scene==1)
		{
			lmscene1.setViewWindow(screenx, screeny, screenwidth, screenheight);
		append();
		lmscene1.paint(g, 0, 0);}
		else if (scene==2)
		{
			mrole.setPosition(mrole.roomx, mrole.roomy);
			lmscene2.setViewWindow(0, 0, screenwidth, screenheight);
			append2();
			lmscene2.paint(g, 0, 0);
		}
		//显示对话

		drawmessage();

		if (showyesorno == true) {
			drawlist();
		}
		if (missionmessage != null) {
			g.setColor(255, 255, 255);

			g.drawString(missionmessage, 0, 0, 0);
		}
		flushGraphics();
	}

	public void nextmessage() {
		if (vectormessage.size() > 0 && vectorpicture.size() > 0)	 
		{
			curpicture = (Image) vectorpicture.elementAt(0);
			curmessage = (String) vectormessage.elementAt(0);
		}

		if (Math.abs(tempx - mrole.x) > 4 || Math.abs(tempy - mrole.y) > 4) {
			curmessage = null;
			vectormessage.removeAllElements();
			vectorpicture.removeAllElements();
			showyesorno = false;
			iscollide = false;
		}
	}

	// 绘制对话函数
	public void drawmessage() {
		if (curmessage != null) {
			///////*********************/////////
			g.setColor(0, 0, 100);
			g.fillRect(0, getHeight() - 40, getWidth(), 40);
			////////////****************////////////

			g.drawImage(curpicture, 0, getHeight() - 40, 0);
			Font f = Font.getFont(Font.FACE_SYSTEM, Font.STYLE_PLAIN,
					Font.SIZE_MEDIUM);
			g.setFont(f);
			g.setColor(255, 255, 255);
			if (curmessage.length() <= getWidth() / 12) {
				g.drawString(curmessage, 37, getHeight() - 40, 0);
				
			} else {
				int length = curmessage.length();
				int len = getWidth() / 12;
				int y = getHeight() - 40;
				int offset = 0;
				while (length > 0) {
					g.drawSubstring(curmessage, offset, len, 37, y, 0);
				
					y += 12;
					offset += getWidth() / 12;
					length -= getWidth() / 12;
					if (length > getWidth() / 12) {
						len = getWidth() / 12;
					} else {
						len = length;
					}

				}
			}
			Font ff = Font.getFont(Font.FACE_SYSTEM, Font.STYLE_PLAIN,
					Font.SIZE_SMALL);
			g.setFont(ff);
			g.setColor(255, 255, 255);
			g.drawString("Push FIRE", 130, getHeight() - 10, 0);
		}
	}

	//碰撞检测
	void collidetest() {
		mrole.setPosition(mrole.x, mrole.y);
//		mrole.setPosition(mrole.roomx, mrole.roomy);

		if (mrole.collidesWith(load.property[0], true)) {
			screenunmove();
			mrole.unmove();
			mrole.setPosition(mrole.x, mrole.y);
			catchcat = true;

		} else {
			catchcat = false;
		}

		if (mrole.collidesWith(load.imgmap1, true)) {
			screenunmove();
			mrole.unmove();
			mrole.setPosition(mrole.x, mrole.y);
		}

		if (mrole.collidesWith(load.maproom1layer2, false)) {
scene=1;
inputmode=0;
		}
		if (mrole.collidesWith(load.maproom1layer1, true)) {
			mrole.unmoveroom();
		}
		if (mrole.collidesWith(load.imgmap3, true)) {
			scene=2;
			inputmode=2;
//			load.maproom1layer2.setVisible(true);
//			load.maproom1layer1.setVisible(true);
//			load.maproom1ground.setVisible(true);
		}
		for (int i = 0; i < load.vectornpc.size(); i++) {
			Npc npc = (Npc) load.vectornpc.elementAt(i);
			if (mrole.collidesWith(npc, true)) {
				tempx = mrole.x;
				tempy = mrole.y;
				mrole.unmove();
				screenunmove();
				mrole.setPosition(mrole.x, mrole.y);

			
				if (npc.name == "老人" && catchcat2 == true) {
					String temp2 = npc.name + "：" + npc.message2;//加入npc对话
					vectormessage.addElement(temp2);
					Image tempimage2 = npc.img;
					vectorpicture.addElement(tempimage2);
					missionmessage = "任务完成";
				} 
				else if (npc.name=="老人" )
				{
					String temp = npc.name + "：" + npc.message1;//加入npc对话
					vectormessage.addElement(temp);
					Image tempimage = npc.img;
					vectorpicture.addElement(tempimage);
					iscollide = true;
				}else {
					String temp = npc.name + "：" + npc.message1;//加入npc对话
					vectormessage.addElement(temp);
					Image tempimage = npc.img;
					vectorpicture.addElement(tempimage);
				}
			}
		}
	}

	public void drawlist() {
		g.setColor(0, 0, 100);
		g.fillRect(0, getHeight() - 40, getWidth(), 40);
		g.setColor(255, 255, 128);

		g.drawString("好的", 10, getHeight() - 30, 0);
		g.drawString("不了", 10, getHeight() - 20, 0);

		g.setColor(255, 255, 0);
		g.fillArc(5, selecty, 5, 5, 0, 360);
		Font ff = Font.getFont(Font.FACE_SYSTEM, Font.STYLE_PLAIN,
				Font.SIZE_SMALL);
		g.setFont(ff);
		g.setColor(255, 255, 255);
		g.drawString("Push FIRE", 130, getHeight() - 10, 0);
	}

	public void append()
	{

		lmscene1.append(mrole);
		lmscene1.append(load.npc[0]);
		lmscene1.append(load.npc[1]);
		lmscene1.append(load.npc[2]);
		lmscene1.append(load.property[0]);
		lmscene1.append(load.imgmap1);
		lmscene1.append(load.imgmap2);
		lmscene1.append(load.imgmap3);
		lmscene1.append(load.mapbackground);
	}
	
	public void append2()
	{
		lmscene2.append(mrole);
		lmscene2.append(load.maproom1layer2);
		lmscene2.append(load.maproom1layer1);		
		lmscene2.append(load.maproom1ground);
	}
	//输入函数，负责主角和屏幕的移动

	//主线成，
	public void run() {
		while (true) {
			nextmessage();
			input();
			collidetest();
			draw();
			try {
				Thread.sleep(20);
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
		}
	}

	void input() {
		int key = getKeyStates();
		if (inputmode == 0) {
			if ((key & FIRE_PRESSED) != 0) {
				if (catchcat == true) {
					load.property[0].setVisible(false);
					catchcat2 = true;
				} else {
					if (iscollide == true) {
						showyesorno = true;
						inputmode = 1;
					}
				}
			}
			if ((key & UP_PRESSED) != 0) {
				mrole.setFrame(mrole.directionup++);
				if (mrole.directionup > 15)
					mrole.directionup = 12;

				if (mrole.y - 4 <= 0)
					mrole.y = 0;
				else
					mrole.move(0, -4);

				
				if (screeny - 4 > 0)
					screenmove(0, -4);
				else
					screeny = 0;
			}
			if ((key & DOWN_PRESSED) != 0) {
				mrole.setFrame(mrole.directiondown++);
				if (mrole.directiondown > 3)
					mrole.directiondown = 0;

				if (mrole.y + 24 + 4 >= imgbackgroundheight)
					mrole.y = imgbackgroundheight - 24;
				else
					mrole.move(0, 4);
				

				
				if (screeny + 4 + screenheight < imgbackgroundheight)
					screenmove(0, 4);
				else
					screeny = imgbackgroundheight - 3 - 177;
			}
			if ((key & LEFT_PRESSED) != 0) {
				mrole.setFrame(mrole.directionleft++);
				if (mrole.directionleft > 7)
					mrole.directionleft = 4;

				if (mrole.x - 4 <= 0)
					mrole.x = 0;
				else
					mrole.move(-4, 0);

				
				if (screenx - 4 > 0)
					screenmove(-4, 0);
				else
					screenx = 0;
			}
			if ((key & RIGHT_PRESSED) != 0) {
				mrole.setFrame(mrole.directionright++);
				if (mrole.directionright > 11)
					mrole.directionright = 8;
				if (mrole.x >= imgbackgroundwidth - 16 - 4)
					mrole.x = imgbackgroundwidth - 16;
				else 
					mrole.move(4, 0);

						
					if (screenx + 4 + screenwidth < imgbackgroundwidth)
						screenmove(4, 0);
					else
						screenx = imgbackgroundwidth - 4 - screenwidth;
				}
			}
		 
	else if (inputmode == 1) {

			if ((key & DOWN_PRESSED) != 0) {
				selecty += 10;
				if (selecty >= 162) {
					selecty = 162;
				}
			}
			if ((key & UP_PRESSED) != 0) {
				selecty -= 10;
				if (selecty <= 152) {
					selecty = 152;
				}
			}
			if ((key & FIRE_PRESSED) != 0) {
				if (selecty == 152) {
					mainroleanswer = true;
					missionmessage = "帮助老人找他的猫";
					
				}

				if (selecty == 162)
					mainroleanswer = false;
				inputmode = 0;
			}
		}
	else if (inputmode == 2)
	{
		if ((key & UP_PRESSED) != 0) {
			mrole.setFrame(mrole.directionup++);
			if (mrole.directionup > 15)
				mrole.directionup = 12;
		if (mrole.roomy - 4 <= 0)
			mrole.roomy = 0;
		else
			mrole.moveroom(0, -4);
		}
		
		if ((key & DOWN_PRESSED) != 0) {
			mrole.setFrame(mrole.directiondown++);
			if (mrole.directiondown > 3)
				mrole.directiondown = 0;
		if (mrole.roomy + 24 + 4 >= 177)
		{
			mrole.roomy = 177 - 24;
		}
		else
			mrole.moveroom(0, 4);		
		}
		if ((key & LEFT_PRESSED) != 0) {
			mrole.setFrame(mrole.directionleft++);
			if (mrole.directionleft > 7)
				mrole.directionleft = 4;
		if (mrole.roomx - 4 <= 0)
			mrole.roomx = 0;
		else
			mrole.moveroom(-4, 0);
		}
		if ((key & RIGHT_PRESSED) != 0) {
			mrole.setFrame(mrole.directionright++);
			if (mrole.directionright > 11)
				mrole.directionright = 8;
		if (mrole.roomx >= 180 - 16 - 4)
			mrole.roomx = 180 - 16;
		else 
			mrole.moveroom(4, 0);
		}
	
		
	}
	}
}