// Tank Battle Demo // By Greg Murray // Date: 5/5/96 // import java.awt.*; import java.applet.Applet; import java.applet.AudioClip; //import tankProducer; //import tankConsumer; public class tank extends Applet implements Runnable { // Declare varribles/objects Point startingPoint, enemyStartingPoint; AudioClip launch, texas, boom, lboom; boolean letsStart = false; private Thread Tank= null; private tankMonitor tankmonitor; private Point orderMade, turret; Thread consumer, producer; Image man, TankImage1, TankImage2, ball1, ball2, ball3, weapon, theTank; //The following function was modified from the pause funciton presented //in Java in 21 Days page 204 which was written by Laura Lemay void pause(int atime){ try{ Tank.sleep(atime); } catch(InterruptedException e){} } public boolean mouseDown(Event e, int x, int y){ letsStart = true; boom.play(); return true; } public void init(){ this.setBackground(Color.white); // load the images/sounds texas = getAudioClip(getCodeBase(), "texas.au"); lboom = getAudioClip(getCodeBase(), "lboom.au"); texas = getAudioClip(getCodeBase(), "texas.au"); boom = getAudioClip(getCodeBase(), "boom.au"); launch = getAudioClip(getCodeBase(), "launch.au"); TankImage2 = getImage(getCodeBase(), "images/tank2.gif"); TankImage1 = getImage(getCodeBase(), "images/tank.gif"); boom = getAudioClip(getCodeBase(), "boom.au"); ball1 = getImage(getCodeBase(), "images/ball1.gif"); ball2 = getImage(getCodeBase(), "images/ball3.gif"); ball3 = getImage(getCodeBase(), "images/ball2.gif"); man = getImage(getCodeBase(), "images/hick.gif"); launch.play(); } public void paint(Graphics g){ if(!letsStart){ Point startPos = new Point(50,15); Point startPos2 = new Point(150,15); Font f1 = new Font("TimesRoman", Font.PLAIN, 22); Font f2 = new Font("TimesRoman", Font.PLAIN, 14); g.setFont(f1); g.setColor(Color.blue); g.drawString("Tank Commander", 100, 100); g.setColor(Color.green); g.setFont(f2); g.drawString("By Greg Murray", 150, 160); g.setColor(Color.black); // draw tanks g.drawImage(TankImage1,startPos.x,startPos.y,this); g.drawImage(TankImage2,startPos2.x,startPos2.y,this); drawTank(TankImage1, startPos, 180, "red"); drawTank(TankImage2, startPos2, 135, "blue"); // draw weapons g.drawImage(man,50,250,this); g.drawImage(ball3,300,15,this); g.drawImage(ball2,300,42,this); g.drawImage(ball1,300,66,this); g.drawString("Controls", 350,10); g.drawString("1 - Low Power Bomb", 315,25); g.drawString("2 - Medium Power Bomb", 315,50); g.drawString("3 - High Power Bomb", 315,75); g.drawString("L - Launch Bomb", 315,100); g.drawString("A - Rotate Turret ClockWise", 315,125); g.drawString("S - Rotate Turret Counter Clockwise", 315,150); g.drawString(" Arrow Keys Control Tank Movement", 315, 175); lboom.play(); } } public void clearAround(Point tank1){ // erase arount the object this.getGraphics().clearRect(tank1.x,tank1.y-20, 30, 20); this.getGraphics().clearRect(tank1.x-20,tank1.y-20,20,70); this.getGraphics().clearRect(tank1.x+30,tank1.y-20, 20,70); this.getGraphics().clearRect(tank1.x,tank1. y+30,30,20); } public boolean keyDown(Event evt, int key){ Point tank1; int turret; tank1 = tankmonitor.getTankPoint(); int xpos = tank1.x; int ypos = tank1.y; turret = tankmonitor.getTurret(); int txpos = turret; clearAround(tank1); if ((char)key == 's' || (char)key == 'S') { if (txpos == 360) txpos = -45; txpos = txpos + 45; if (txpos == 360) txpos = 0; } if ((char)key == 'a' || (char)key == 'A') { if (txpos == 0 ) txpos = 360; txpos= txpos - 45; } if ((char)key == 'l' || (char)key == 'L') { tankmonitor.handleShot(true);} //--Handle the switching of weapons if ((char)key == '1' || (char)key == '!') { tankmonitor.handleShotType(ball3, 3);} if ((char)key == '2' || (char)key == '@') { tankmonitor.handleShotType(ball2, 2);} if ((char)key == '3' || (char)key == '#') { tankmonitor.handleShotType(ball1, 1);} if (key == Event.UP){ theTank = TankImage1; if (ypos >= 0) ypos = ypos -1; } if (key == Event.DOWN){ theTank = TankImage1; if (ypos <= 270) ypos = ypos +1; } if (key == Event.RIGHT){ theTank = TankImage2; if (xpos <= 570) xpos = xpos +1; } if (key == Event.LEFT){ theTank = TankImage2; if (xpos >= 0) xpos = xpos -1; } tank1.x = xpos; tank1.y = ypos; turret = txpos; tankmonitor.handleTurret(turret); tankmonitor.handleTankPoint(tank1); return true; } public void explodeSequence(Point theLocation){ int counter, temp1, temp2; int mx = theLocation.x+15; int my = theLocation.y+15; Graphics g = getGraphics(); pause(100); boom.play(); for (counter=0; counter <20; counter++) { temp1 = (int)(Math.random()*counter*4); temp2 = (int)(Math.random()*counter*4); g.setColor(Color.red); g.fillRect(mx+temp1,my+temp2,counter/3,counter/3); pause(50); g.fillRect(mx+temp1,my-temp2,counter/3,counter/3); pause(30); g.fillRect(mx-temp1,my+temp2,counter/3,counter/3); pause(15); g.fillRect(mx-temp1,my-temp2,counter/3,counter/3); } pause(1000); g.clearRect(theLocation.x-100,theLocation.y-100,200,200); } public void drawTank(Image aTank, Point inPoint, int inTurret, String theColor){ Image TankImage = aTank; Point tank = inPoint; int turret; Graphics g = getGraphics(); boolean shotTaken; int tpos, shot, shot2; turret = inTurret; tpos = turret; // set color if (theColor.equals("black")) g.setColor(Color.black); if (theColor.equals("green")) g.setColor(Color.green); if (theColor.equals("blue")) g.setColor(Color.blue); if (theColor.equals("red")) g.setColor(Color.red); if (theColor.equals("white")) g.setColor(Color.white); g.drawImage(TankImage, tank.x, tank.y, this); if (tpos ==0){ g.drawLine(tank.x+15,tank.y+15,tank.x +15, tank.y- 5); int xpts [] = {tank.x+10,tank.x+20, tank.x+25,tank.x+5, tank.x+10}; int ypts [] = {tank.y+10,tank.y+10, tank.y+20,tank.y+20, tank.y+10}; int ptnum = xpts.length; g.fillPolygon(xpts,ypts,ptnum); } else if (tpos == 45){ int xpts [] = {tank.x+15,tank.x+23, tank.x+20,tank.x+5, tank.x+15}; int ypts [] = {tank.y+10,tank.y+15, tank.y+25,tank.y+15, tank.y+10}; int ptnum = xpts.length; g.fillPolygon(xpts,ypts,ptnum); g.drawLine(tank.x+15,tank.y+15,tank.x+30, tank.y); } else if (tpos == 90 ){ g.drawLine(tank.x+15,tank.y+15,tank.x + 35, tank.y +15); int xpts [] = {tank.x+10,tank.x+20, tank.x+20,tank.x+10, tank.x+10}; int ypts [] = {tank.y+7,tank.y+13, tank.y+22,tank.y+27, tank.y+7}; int ptnum = xpts.length; g.fillPolygon(xpts,ypts,ptnum); } else if (tpos == 135){ g.drawLine(tank.x+15,tank.y+15,tank.x + 30, tank.y +30); int xpts [] = {tank.x+5,tank.x+26, tank.x+24,tank.x+15, tank.x+5}; int ypts [] = {tank.y+20,tank.y+5, tank.y+18 ,tank.y+25, tank.y+20}; int ptnum = xpts.length; g.fillPolygon(xpts,ypts,ptnum); } else if (tpos == 180){ g.drawLine(tank.x+15, tank.y+15, tank.x+15, tank.y +30); int xpts [] = {tank.x+5,tank.x+25, tank.x+20,tank.x+10, tank.x+5}; int ypts [] = {tank.y+10,tank.y+10, tank.y+20,tank.y+20, tank.y+10}; int ptnum = xpts.length; g.fillPolygon(xpts,ypts,ptnum); } else if (tpos == 225){ g.drawLine(tank.x+15,tank.y+15,tank.x, tank.y+30); int xpts [] = {tank.x+9, tank.x+13, tank.x+28, tank.x+15, tank.x+8}; int ypts [] = {tank.y+15,tank.y+2, tank.y+23,tank.y+22, tank.y+15}; int ptnum = xpts.length; g.fillPolygon(xpts,ypts,ptnum); } else if (tpos == 270){ g.drawLine(tank.x+15,tank.y+15,tank.x, tank.y+15); int xpts [] = {tank.x+10, tank.x+20, tank.x+20, tank.x+10, tank.x+10}; int ypts [] = {tank.y+10, tank.y+5, tank.y+25, tank.y+20, tank.y+10}; int ptnum = xpts.length; g.fillPolygon(xpts,ypts,ptnum); } else if (tpos == 315){ g.drawLine(tank.x+15,tank.y+15,tank.x, tank.y); int xpts [] = {tank.x+8, tank.x+15, tank.x+27, tank.x+12, tank.x+8}; int ypts [] = {tank.y+18, tank.y+8, tank.y + 8, tank.y+28, tank.y+18}; int ptnum = xpts.length; g.fillPolygon(xpts,ypts,ptnum); } } public void ProcessShot(Point inPoint, int turrPos){ boolean hit = false; Point temp = new Point (0,0); Point enemy; Point tank = inPoint; int tpos, shot, shot2; tpos = turrPos; tank = tankmonitor.getTankPoint(); enemy = tankmonitor.getEnemyPoint(); //-----Begin Firing Sequence---// weapon = tankmonitor.getShotType(); launch.play(); switch (tpos){ case 90 : { shot = tank.x+50; while (shot <= 615 && !hit){ this.getGraphics().clearRect(shot-10 ,tank.y+13,10,10); this.getGraphics().drawImage(weapon,shot,tank.y+13, this); temp = new Point(shot,tank.y+13); hit = tankmonitor.didIHit(temp); shot = shot + 3; } if (hit){ lboom.play(); tankmonitor.handleEnemyHits (tankmonitor.getEnemyHits()+1); if (tankmonitor.getEnemyDead()) explodeSequence(temp); hit = false; } tankmonitor.handleShot(false); break; } case 0 : { shot = tank.y-30; while (shot >= -15 && !hit){ this.getGraphics().clearRect(tank.x+14, shot+15,10,10); this.getGraphics().drawImage(weapon,tank.x+14, shot , this); temp = new Point(tank.x+14, shot); hit = tankmonitor.didIHit(temp); shot = shot - 3; } if (hit){ lboom.play(); tankmonitor.handleEnemyHits (tankmonitor.getEnemyHits()+1); if (tankmonitor.getEnemyDead()) explodeSequence(temp); hit = false; } tankmonitor.handleShot(false); break; } case 180 : { shot = tank.y+45; while (shot <= 315 && !hit){ this.getGraphics().clearRect(tank.x+14, shot-10,10,10); this.getGraphics().drawImage(weapon,tank.x+14, shot , this); temp = new Point(tank.x+14, shot); hit = tankmonitor.didIHit(temp); shot = shot + 3; } if (hit){ lboom.play(); tankmonitor.handleEnemyHits (tankmonitor.getEnemyHits()+1); if (tankmonitor.getEnemyDead()) explodeSequence(temp); hit = false; } tankmonitor.handleShot(false); break; } case 270 : { shot = tank.x-20; while (shot >= -15 && !hit){ this.getGraphics().clearRect(shot+10, tank.y+11,10,10); this.getGraphics().drawImage(weapon, shot, tank.y+11 , this); temp = new Point(shot,tank.y+13); hit = tankmonitor.didIHit(temp); shot = shot -3; } if (hit){ lboom.play(); tankmonitor.handleEnemyHits (tankmonitor.getEnemyHits()+1); if (tankmonitor.getEnemyDead()) explodeSequence(temp); hit = false; } tankmonitor.handleShot(false); break; } case 315 : { shot2 = tank.x-20 ; shot = tank. y-20 ; while (shot >= -15 && !hit){ this.getGraphics().clearRect(shot2 + 10, shot +10 ,10,10); this.getGraphics().drawImage(weapon, shot2, shot , this); temp = new Point(shot2, shot); hit = tankmonitor.didIHit(temp); shot = shot -3; shot2 = shot2 -3; } if (hit){ lboom.play(); tankmonitor.handleEnemyHits (tankmonitor.getEnemyHits()+1); if (tankmonitor.getEnemyDead()) explodeSequence(temp); hit = false; } tankmonitor.handleShot(false); break; } case 225 : { shot2 = tank.x-22; shot = tank.y+37; while (shot <= 315 && !hit){ this.getGraphics().clearRect(shot2 + 10, shot - 10 ,10,10); this.getGraphics().drawImage(weapon,shot2, shot, this); temp = new Point(shot2, shot); hit = tankmonitor.didIHit(temp); shot = shot + 3; shot2 = shot2 - 3; } if (hit){ lboom.play(); tankmonitor.handleEnemyHits (tankmonitor.getEnemyHits()+1); if (tankmonitor.getEnemyDead()) explodeSequence(temp); hit = false; } tankmonitor.handleShot(false); break; } case 135 : { shot2 = tank.x+40; shot = tank.y + 40; while (shot <= 315 && !hit){ this.getGraphics().clearRect(shot2 - 10, shot -10 ,10,10); this.getGraphics().drawImage(weapon,shot2, shot, this); temp = new Point(shot2, shot); hit = tankmonitor.didIHit(temp); shot = shot + 3; shot2 = shot2 + 3; } if (hit){ lboom.play(); tankmonitor.handleEnemyHits (tankmonitor.getEnemyHits()+1); if (tankmonitor.getEnemyDead()) explodeSequence(temp); hit = false; } tankmonitor.handleShot(false); break; } case 45 : { shot2 = tank.x+35; shot = tank.y -10; while (shot >= -15 && !hit){ this.getGraphics().clearRect(shot2 - 10, shot + 10 ,10,10); this.getGraphics().drawImage(weapon,shot2, shot, this); temp = new Point(shot2, shot); hit = tankmonitor.didIHit(temp); shot = shot - 3; shot2 = shot2 + 3; } if (hit){ lboom.play(); tankmonitor.handleEnemyHits (tankmonitor.getEnemyHits()+1); if (tankmonitor.getEnemyDead()) explodeSequence(temp); hit = false; } tankmonitor.handleShot(false); break; } } // end switch } public void run(){ // Tank Point goodGuy; Point enemy; while (letsStart == false){ this.getGraphics().drawString("Click the Screen to Begin", 225, 225); pause (2000); this.getGraphics().clearRect(200, 200,300,40); pause (500); } texas.play(); this.getGraphics().clearRect(0,0,600,300); while(Tank!=null){ try{ drawTank(theTank, tankmonitor.getTankPoint(), tankmonitor.getTurret(), "black"); if (tankmonitor.getEnemyDead()){ this.getGraphics().drawString("Great Shot!", 255, 125); texas.play(); pause (2500); this.getGraphics().clearRect(200, 100,150,30); pause (500); int xpos = (int)(Math.random()*570); int ypos = (int)(Math.random()*270); Point tempPoint = new Point(xpos, ypos); tankmonitor.handleEnemyDead(false); tankmonitor.handleEnemyPoint(tempPoint); tankmonitor.handleKills(tankmonitor.getKills() + 1); } enemy = tankmonitor.getEnemyPoint(); if (!tankmonitor.getEnemyDead()){ enemy = tankmonitor.getEnemyPoint(); clearAround(enemy); this.getGraphics().drawImage(man, enemy.x, enemy.y,this); } if (tankmonitor.getShot()) ProcessShot(tankmonitor.getTankPoint(), tankmonitor.getTurret()); goodGuy = tankmonitor.getTankPoint(); getAppletContext().showStatus("Position " + goodGuy.x + "," + goodGuy.y + " Turret " + tankmonitor.getTurret() + " Enemy " + enemy.x + " , " + enemy.y + " Kills: " + tankmonitor.getKills()); Tank.sleep(10); } catch(InterruptedException e) { } } } public void start (){ // start up all the threads when pizzaThread is null startingPoint = new Point(100,50); enemyStartingPoint = new Point(400,200); int turret = 0; if (Tank==null) { tankMonitor p= new tankMonitor(); tankmonitor = p; tankmonitor.handleEnemyPoint(enemyStartingPoint); producer = new tankProducer(p); Tank = new Thread(this); consumer = new tankConsumer(p); // start the threads producer.start(); //tankmonitor.handleEnemyPoint(enemyStartingPoint); tankmonitor.handleTankPoint(startingPoint); tankmonitor.handleTurret(turret); tankmonitor.handleShotType(ball3, 3); Tank.start(); //consumer.start(); // I may use later theTank = TankImage1; } } public void stop(){ // shut down all the threads Tank.stop(); Tank = null; producer.stop(); producer = null; consumer.stop(); consumer = null; } }// end Tank Class //************************************************************************* class tankProducer extends Thread { private tankMonitor tankmonitor; private int number, total; Point enemyTankPt, enemy; public tankProducer(tankMonitor p){ tankmonitor=p; }// end constructor public void run (){ //Enemy Thread int decision1, decision2, xpos, ypos; int direction = 0; while(this!=null) { try{ enemy = tankmonitor.getEnemyPoint(); xpos = enemy.x; ypos = enemy.y; // lets make the computer move decision1 = (int)(Math.random()*2); switch (decision1) { case 1 : { decision2 = (int)(Math.random()*32); switch (decision2){ case 1:{ direction = 0; break; } case 2:{ direction = 90; break; } case 3:{ direction = 180; break; } case 4:{ direction = 270; break; } }// end inner switch } // end case 2 case 2:{ // go the same direction switch (direction){ case 0: { if(ypos >=1) ypos--; break; } case 90: { if(xpos <= 575) xpos++; break; } case 180: { if (ypos <= 275) ypos++; break; } case 270: { if (xpos >= 1) xpos--; break; } }// end inner switch } // end case 3 }// end outer switch enemyTankPt = new Point(xpos,ypos); tankmonitor.handleEnemyPoint(enemyTankPt); this.sleep((int)(Math.random()*50)); } catch(InterruptedException e) { } } //end while loop } // end tankProducer run } // end tankProducer class //************************************************************************ class tankConsumer extends Thread { //Constructor private tankMonitor tankmonitor; public tankConsumer (tankMonitor p){ tankmonitor = p; } public void run (){ while(this!=null) { try{ this.sleep(100); } catch(InterruptedException e) { } } // end while loop } // end Consumer run } // end class Consumer Class //************************************************************************* //This is the monitor //The code was adapted here as a monitor for my two threads class tankMonitor { private Point enemyPos; private Point tankPos; private int turret, weaponRef; private int kills = 0; private int playerStrength = 100; private int enemyStrength = 100; private boolean Shot = false; private int enemyHits = 0; private boolean enemyDead = false; private boolean playerDead = false; private Image weapon; public synchronized boolean didIHit(Point inPoint){ if ((inPoint.x > enemyPos.x-8 && inPoint.x < enemyPos.x+26) && (inPoint.y > enemyPos.y-8 && inPoint.y < enemyPos.y+26)){ if (weaponRef == 1) enemyStrength = enemyStrength - 30; if (weaponRef == 2) enemyStrength = enemyStrength - 20; if (weaponRef == 3) enemyStrength = enemyStrength - 10; if (enemyStrength <=0){ enemyStrength = 100; enemyDead = true; } return true; } else return false; } //handle the tank Position public synchronized void handleTankPoint (Point invalue) { tankPos = invalue; notify(); } //retrieve the tank position public synchronized Point getTankPoint() { notify(); return tankPos; } // manipulate position public synchronized void handleEnemyPoint (Point invalue) { enemyPos = invalue; notify(); } //retrieve the enemy position public synchronized Point getEnemyPoint() { notify(); return enemyPos; } //retrieve the whether or not a shot has been made public synchronized boolean getShot() { notify(); return Shot; } //allow manipulation of the total shot public synchronized void handleShot (boolean invalue) { Shot = invalue; notify(); } //return the turret possition public synchronized int getTurret() { notify(); return turret; } //allow the user to manipulate turret: in degrees public synchronized void handleTurret (int inTurret) { turret = inTurret; notify(); } //return the number of kills public synchronized int getKills() { notify(); return kills; } //allow the user to manipulate number of kills public synchronized void handleKills (int inNumber) { kills = inNumber; notify(); } //allow for getting of shotType public synchronized Image getShotType(){ notify(); return weapon; } //allow for manipulation of shotType public synchronized void handleShotType(Image inImage, int inValue){ weaponRef = inValue; weapon = inImage; } //allow for getting of Enemy Hits public synchronized int getEnemyHits(){ notify(); return enemyHits; } //allow for manipulation of shotType public synchronized void handleEnemyHits(int inValue){ enemyHits = inValue; } //allow for getting of Enemy Hits public synchronized boolean getEnemyDead(){ notify(); return enemyDead; } //allow for manipulation of shotType public synchronized void handleEnemyDead(boolean inValue){ enemyDead = inValue; } //allow for getting of Enemy Hits public synchronized boolean playerDead(){ notify(); return playerDead; } //allow for manipulation of existence of player public synchronized void handlePlayerDead(boolean inValue){ playerDead = inValue; } }// end tank monitor Class