import java.awt.*; import java.*; import java.lang.*; import java.awt.event.*; import java.applet.*; import java.io.*; import java.util.*; import javax.media.j3d.*; import javax.vecmath.*; import com.sun.j3d.loaders.*; import com.sun.j3d.utils.applet.MainFrame; import com.sun.j3d.utils.behaviors.keyboard.*; import com.sun.j3d.utils.behaviors.mouse.*; import com.sun.j3d.utils.behaviors.*; import com.sun.j3d.utils.geometry.*; import com.sun.j3d.utils.universe.*; import com.sun.j3d.utils.image.*; public class PredPrey3D extends java.applet.Applet implements Runnable, ActionListener, AdjustmentListener, WindowListener{ Image buf, graphImg; Graphics gbuf, graphG, graphBuf; Thread runner; final int COUNT_LIMIT= 100, SPACE= 300/COUNT_LIMIT, VECTOR_SIZE= 20, SHEEP= 1, WOLF= 1, GRASS= 2, sheepSight= 50, wolfSight= 75, MAX_MEM= 25, MIN_MEM= -25; final float initAnimalSize= .25f, initGrassLength= .3f, GRASS_LENGTH= 1f, SHEEP_SIZE= .5f, WOLF_SIZE= 1f; int width= 300, length= 300, time= 0, countIndex= -1, oldestSheepAge= 0, amountGrass= VECTOR_SIZE, numSheepAlive, sheepTime= 0, sheepSize, sheepTotalCount= 0, SHEEP_AGE= 400, SHEEP_EAT= 200, SHEEP_REP= SHEEP_AGE/4, numWolfAlive, wolfTime= 0, wolfSize, wolfTotalCount= 0, WOLF_AGE= 600, WOLF_EAT= 300, WOLF_REP= WOLF_AGE/4; double distance, tempDist, angle; String numAnimal; Integer num; boolean runBefore= false, done= false; Vector3d grassLoc= new Vector3d(); Vector sheep, wolf, grass, sheepCount, sheepBranch,// sheepPos, wolfCount, wolfBranch,// wolfPos, grassBranch;//, grassPos; Button reset, exit, opt, dispGraph, hlp; Frame options= new Frame("Preditor/Prey Options"), graph= new Frame("Preditor/Prey Graph"), help= new Frame("Help"); Panel bottom, graphPan; ScrollPane graphScroll; TextArea helpText; Scrollbar wolfNumScroll= new Scrollbar(Scrollbar.HORIZONTAL, 2, 1, 1, 6), wolfAgeScroll= new Scrollbar(Scrollbar.HORIZONTAL, WOLF_AGE, 10, 100, 1201), wolfEatScroll= new Scrollbar(Scrollbar.HORIZONTAL, WOLF_EAT, 10, 50, 601), sheepNumScroll= new Scrollbar(Scrollbar.HORIZONTAL, 2, 1, 1, 11), sheepAgeScroll= new Scrollbar(Scrollbar.HORIZONTAL, SHEEP_AGE, 10, 100, 1001), sheepEatScroll= new Scrollbar(Scrollbar.HORIZONTAL, SHEEP_EAT, 10, 50, 501); TextField wolfNumText, wolfAgeText, wolfEatText, sheepNumText, sheepAgeText, sheepEatText; Grass3D g, tempGrass; Sheep3D s, tempSheep; Wolf3D w, tempWolf; Material wolfMaterial, sheepMaterial, grassMaterial; Appearance wolfAppear, sheepAppear, grassAppear; Canvas3D c= new Canvas3D(null); SimpleUniverse u= new SimpleUniverse(c); BranchGroup objRoot= new BranchGroup(), animalRoot= buildBranchGroup(); BoundingSphere bounds= new BoundingSphere(new Point3d(), 1000); Font3D f3d= new Font3D(new Font("Helvetica", Font.PLAIN, 1), new FontExtrusion()); ViewingPlatform plat= u.getViewingPlatform(); TransformGroup viewTrans= plat.getViewPlatformTransform(); BranchGroup txtTrans= buildBranchGroup(); /* createSceneGraph: builds the 3D world receives the SimpleUniverse to manipulate, used to set up keyboard navigation control returns finished BrachGroup */ public BranchGroup createSceneGraph() { buildFrames(); viewTrans.addChild(txtTrans); System.out.println("Creating scene graph"); objRoot.setCapability(BranchGroup.ALLOW_CHILDREN_EXTEND); objRoot.setCapability(BranchGroup.ALLOW_CHILDREN_READ); objRoot.setCapability(BranchGroup.ALLOW_CHILDREN_WRITE); //materials for animals sheepMaterial= new Material(new Color3f(0f, 0f, .5f), new Color3f(0f, 0f, .5f), new Color3f(.7f, .7f, .7f), new Color3f(1f, 1f, 1f), 100f); sheepMaterial.setCapability(Material.ALLOW_COMPONENT_READ); sheepMaterial.setCapability(Material.ALLOW_COMPONENT_WRITE); wolfMaterial= new Material(new Color3f(.5f, 0f, 0f), new Color3f(.5f, 0f, 0f), new Color3f(.7f, .7f, .7f), new Color3f(1f, 1f, 1f), 100f); wolfMaterial.setCapability(Material.ALLOW_COMPONENT_READ); wolfMaterial.setCapability(Material.ALLOW_COMPONENT_WRITE); grassMaterial= new Material(new Color3f(0f, .3f, 0f), new Color3f(0f, .3f, 0f), new Color3f(.7f, .7f, .7f), new Color3f(1f, 1f, 1f), 100f); grassMaterial.setCapability(Material.ALLOW_COMPONENT_READ); grassMaterial.setCapability(Material.ALLOW_COMPONENT_WRITE); // appearce objects wolfAppear= new Appearance(); wolfAppear.setPolygonAttributes(new PolygonAttributes(PolygonAttributes.POLYGON_FILL, PolygonAttributes.CULL_NONE, 0f)); wolfAppear.setCapability(Appearance.ALLOW_MATERIAL_WRITE); TextureAttributes texAttr= new TextureAttributes(); texAttr.setCapability(TextureAttributes.ALLOW_MODE_WRITE); texAttr.setCapability(TextureAttributes.ALLOW_BLEND_COLOR_WRITE); texAttr.setCapability(TextureAttributes.ALLOW_TRANSFORM_WRITE); texAttr.setTextureMode(TextureAttributes.DECAL); texAttr.setPerspectiveCorrectionMode(TextureAttributes.NICEST); wolfAppear.setTextureAttributes(texAttr); wolfAppear.setMaterial(wolfMaterial); grassAppear= new Appearance(); grassAppear.setPolygonAttributes(new PolygonAttributes(PolygonAttributes.POLYGON_FILL, PolygonAttributes.CULL_NONE, 0f)); grassAppear.setCapability(Appearance.ALLOW_MATERIAL_WRITE); texAttr= new TextureAttributes(); texAttr.setCapability(TextureAttributes.ALLOW_MODE_WRITE); texAttr.setCapability(TextureAttributes.ALLOW_BLEND_COLOR_WRITE); texAttr.setCapability(TextureAttributes.ALLOW_TRANSFORM_WRITE); texAttr.setTextureMode(TextureAttributes.DECAL); texAttr.setPerspectiveCorrectionMode(TextureAttributes.NICEST); grassAppear.setTextureAttributes(texAttr); grassAppear.setMaterial(grassMaterial); sheepAppear= new Appearance(); sheepAppear.setPolygonAttributes(new PolygonAttributes(PolygonAttributes.POLYGON_FILL, PolygonAttributes.CULL_NONE, 0f)); sheepAppear.setCapability(Appearance.ALLOW_MATERIAL_WRITE); texAttr= new TextureAttributes(); texAttr.setCapability(TextureAttributes.ALLOW_MODE_WRITE); texAttr.setCapability(TextureAttributes.ALLOW_BLEND_COLOR_WRITE); texAttr.setCapability(TextureAttributes.ALLOW_TRANSFORM_WRITE); texAttr.setTextureMode(TextureAttributes.DECAL); texAttr.setPerspectiveCorrectionMode(TextureAttributes.NICEST); sheepAppear.setTextureAttributes(texAttr); sheepAppear.setMaterial(sheepMaterial); //set up animals setUp(); //background & floor Background bg= new Background(new Color3f(0f, 0f, 0f)); bg.setApplicationBounds(bounds); TransformGroup floor= new TransformGroup(); Transform3D ft= new Transform3D(); ft.setTranslation(new Vector3d(0f, -.5f, 0f)); floor.setTransform(ft); Appearance fa= new Appearance(); Material fm= new Material(new Color3f(0f, .3f, 0f), new Color3f(0f, .3f, 0f), new Color3f(.7f, .7f, .7f), new Color3f(1f, 1f, 1f), 100f); fa.setMaterial(fm); Box fl= new Box((float)width, 0f, (float)length, Box.GENERATE_TEXTURE_COORDS | Box.GENERATE_NORMALS, fa); floor.addChild(fl); objRoot.addChild(floor); objRoot.addChild(bg); //lights for the scene AmbientLight al= new AmbientLight(); al.setInfluencingBounds(bounds); objRoot.addChild(al); PointLight pl= new PointLight(true, new Color3f(1f, 1f, 1f), new Point3f(5f, 5f, 5f), new Point3f(1f, 0f, 0f)); pl.setInfluencingBounds(bounds); objRoot.addChild(pl); //create keyboard navigation behavior ViewingPlatform plat= u.getViewingPlatform(); KeyNavigatorBehavior walk= new KeyNavigatorBehavior(viewTrans); walk.setSchedulingBounds(bounds); objRoot.addChild(walk); //reposition the view platform Transform3D viewTrans3D= new Transform3D(); viewTrans.getTransform(viewTrans3D); viewTrans3D.rotX(-Math.PI/6); viewTrans3D.setTranslation(new Vector3d(0f, 8f, 20f)); viewTrans.setTransform(viewTrans3D); //set back clipping distance View v= c.getView(); v.setBackClipDistance((double)30); //fog ExponentialFog fog= new ExponentialFog(new Color3f(0f, 0f, 0f), .15f); fog.setInfluencingBounds(bounds); objRoot.addChild(fog); //animalRoot objRoot.addChild(animalRoot); //Have Java 3D perform optimizations on this scene graph. // objRoot.compile(); return objRoot; }//createSceneGraph /* setup */ private void setUp(){ int i, num; //set up sheep SHEEP_EAT= sheepEatScroll.getValue(); SHEEP_AGE= sheepAgeScroll.getValue(); SHEEP_REP= SHEEP_AGE/4; sheep= new Vector(2*sheepNumScroll.getValue(), 1); sheepBranch= new Vector(sheep.size(), 1); // sheepPos= new Vector(sheep.size(), 1); Sheep3D s, s2; for (i= 0, num= 2*sheepNumScroll.getValue(); i < num; i+= 2){ sheep.addElement(new Sheep3D(sheepTotalCount, sheepAppear)); sheep.addElement(new Sheep3D(sheepTotalCount+1, sheepAppear)); sheepTotalCount+= 2; BranchGroup b= buildBranchGroup(), b1= buildBranchGroup(); TransformGroup t= new TransformGroup(), t1= new TransformGroup(); Transform3D t3= new Transform3D(), t3d= new Transform3D(); t3.setTranslation(new Vector3d((5-Math.random()*10), -initAnimalSize*SHEEP_SIZE/2, (5 - Math.random()*10))); t3.get(((Sheep3D)sheep.elementAt(i)).position); t3.setScale(initAnimalSize); t.setTransform(t3); t.setCapability(TransformGroup.ALLOW_TRANSFORM_READ); t.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); t.setCapability(TransformGroup.ALLOW_TRANSFORM_READ); t.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); t.addChild(((Sheep3D)sheep.elementAt(i)).sphere); b.addChild(t); t3d.setTranslation(new Vector3d((5-Math.random()*10), -initAnimalSize*SHEEP_SIZE/2, (5 - Math.random()*10))); t3d.get(((Sheep3D)sheep.elementAt(i+1)).position); t3d.setScale(initAnimalSize); t1.setTransform(t3d); t1.setCapability(TransformGroup.ALLOW_TRANSFORM_READ); t1.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); t1.setCapability(TransformGroup.ALLOW_TRANSFORM_READ); t1.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); t1.addChild(((Sheep3D)sheep.elementAt(i+1)).sphere); b1.addChild(t1); sheepBranch.addElement(b); sheepBranch.addElement(b1); animalRoot.addChild(b); animalRoot.addChild(b1); /* AnimalRotator ar= new AnimalRotator(buildBranchGroup(), buildBranchGroup()), ar1= new AnimalRotator(buildBranchGroup(), buildBranchGroup()); ar.trans3D.setTranslation(new Vector3d((5-Math.random()*10), -initAnimalSize*SHEEP_SIZE/2, (5 - Math.random()*10))); ar.trans3D.get(((Sheep3D)sheep.elementAt(i)).position); ar.local3D.setScale(initAnimalSize); ar.localT.setCapability(TransformGroup.ALLOW_TRANSFORM_READ); ar.localT.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); ar.t.setCapability(TransformGroup.ALLOW_TRANSFORM_READ); ar.t.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); ar.t.addChild(((Sheep3D)sheep.elementAt(i)).sphere); ar1.trans3D.setTranslation(new Vector3d((5-Math.random()*10), -initAnimalSize*SHEEP_SIZE/2, (5-Math.random()*10))); ar1.trans3D.get(((Sheep3D)sheep.elementAt(i+1)).position); ar1.local3D.setScale(initAnimalSize); ar1.localT.setCapability(TransformGroup.ALLOW_TRANSFORM_READ); ar1.localT.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); ar1.t.setCapability(TransformGroup.ALLOW_TRANSFORM_READ); ar1.t.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); ar1.t.addChild(((Sheep3D)sheep.elementAt(i+1)).sphere); //add position information Vector3f v= new Vector3f(), v1= new Vector3f(); Alpha alpha= createAlpha(); ar.trans3D.get(v); PositionInterpolator p= new PositionInterpolator(alpha, ar.t, ar.trans3D, v.x, v.x + 5 - (float)Math.random()*10); p.setSchedulingBounds(bounds); ar.t.addChild(p); sheepPos.addElement(p); ar1.trans3D.get(v1); PositionInterpolator p1= new PositionInterpolator(alpha, ar1.t, ar1.trans3D, v1.x, v1.x + 5 - (float)Math.random()*10); p1.setSchedulingBounds(bounds); ar1.t.addChild(p1); sheepPos.addElement(p1); sheepBranch.addElement(ar.localU); sheepBranch.addElement(ar1.localU); animalRoot.addChild(ar.localU); animalRoot.addChild(ar1.localU); */ s= (Sheep3D)sheep.elementAt(i); s2= (Sheep3D)sheep.elementAt(i+1); s.reproduce= SHEEP_REP/2; s2.reproduce= SHEEP_REP/2; s.generation= 1; s2.generation= 1; s.sex= true; s2.sex= false; s.pack= (Math.random() > .5 ? true : false); s2.pack= (Math.random() > .5 ? true : false); }//for (build sheep) //set up wolves WOLF_EAT= wolfEatScroll.getValue(); WOLF_AGE= wolfAgeScroll.getValue(); WOLF_REP= WOLF_AGE/4; wolf= new Vector(2*wolfNumScroll.getValue(), 1); wolfBranch= new Vector(wolf.size(), 1); // wolfPos= new Vector(wolf.size(), 1); Wolf3D w, w2, tempWolf; for (i= 0, num= 2*wolfNumScroll.getValue(); i < num; i+= 2){ wolf.addElement(new Wolf3D(wolfTotalCount, wolfAppear)); wolf.addElement(new Wolf3D(wolfTotalCount+1, wolfAppear)); wolfTotalCount+= 2; BranchGroup b= buildBranchGroup(), b1= buildBranchGroup(); TransformGroup t= new TransformGroup(), t1= new TransformGroup(); Transform3D t3= new Transform3D(), t3d= new Transform3D(); t3.setTranslation(new Vector3d((5-Math.random()*10), -initAnimalSize*WOLF_SIZE/2, (5 - Math.random()*10))); t3.get(((Wolf3D)wolf.elementAt(i)).position); t3.setScale(initAnimalSize); t.setTransform(t3); t.setCapability(TransformGroup.ALLOW_TRANSFORM_READ); t.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); t.setCapability(TransformGroup.ALLOW_TRANSFORM_READ); t.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); t.addChild(((Wolf3D)wolf.elementAt(i)).box); b.addChild(t); t3d.setTranslation(new Vector3d((5-Math.random()*10), -initAnimalSize*WOLF_SIZE/2, (5 - Math.random()*10))); t3d.get(((Wolf3D)wolf.elementAt(i+1)).position); t3d.setScale(initAnimalSize); t1.setTransform(t3d); t1.setCapability(TransformGroup.ALLOW_TRANSFORM_READ); t1.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); t1.setCapability(TransformGroup.ALLOW_TRANSFORM_READ); t1.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); t1.addChild(((Wolf3D)wolf.elementAt(i+1)).box); b1.addChild(t1); wolfBranch.addElement(b); wolfBranch.addElement(b1); animalRoot.addChild(b); animalRoot.addChild(b1); /* AnimalRotator ar= new AnimalRotator(buildBranchGroup(), buildBranchGroup()), ar1= new AnimalRotator(buildBranchGroup(), buildBranchGroup()); ar.trans3D.setTranslation(new Vector3d((5-Math.random()*10), -.5 + initAnimalSize*WOLF_SIZE/2, (5 - Math.random()*10))); ar.trans3D.get(((Wolf3D)wolf.elementAt(i)).position); ar.local3D.setScale(initAnimalSize); ar.localT.setCapability(TransformGroup.ALLOW_TRANSFORM_READ); ar.localT.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); ar.t.setCapability(TransformGroup.ALLOW_TRANSFORM_READ); ar.t.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); ar.t.addChild(((Wolf3D)wolf.elementAt(i)).box); ar1.trans3D.setTranslation(new Vector3d((5-Math.random()*10), -.5 + initAnimalSize*WOLF_SIZE/2, (5-Math.random()*10))); ar1.trans3D.get(((Wolf3D)wolf.elementAt(i+1)).position); ar1.local3D.setScale(initAnimalSize); ar1.localT.setCapability(TransformGroup.ALLOW_TRANSFORM_READ); ar1.localT.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); ar1.t.setCapability(TransformGroup.ALLOW_TRANSFORM_READ); ar1.t.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); ar1.t.addChild(((Wolf3D)wolf.elementAt(i+1)).box); //create wolf position information Vector3f v= new Vector3f(), v1= new Vector3f(); Alpha alpha= createAlpha(); ar.trans3D.get(v); PositionInterpolator p= new PositionInterpolator(alpha, ar.t, ar.trans3D, v.x, v.x + 5 - (float)Math.random()*10); p.setSchedulingBounds(bounds); ar.t.addChild(p); wolfPos.addElement(p); ar1.trans3D.get(v1); PositionInterpolator p1= new PositionInterpolator(alpha, ar1.t, ar1.trans3D, v1.x, v1.x + 5 - (float)Math.random()*10); p1.setSchedulingBounds(bounds); ar1.t.addChild(p1); wolfPos.addElement(p1); wolfBranch.addElement(ar.localU); wolfBranch.addElement(ar1.localU); animalRoot.addChild(ar.localU); animalRoot.addChild(ar1.localU); */ w= (Wolf3D)wolf.elementAt(i); w2= (Wolf3D)wolf.elementAt(i+1); w.reproduce= WOLF_REP/2; w2.reproduce= WOLF_REP/2; w.generation= 1; w2.generation= 1; w.sex= true; w2.sex= false; w.pack= (Math.random() > .5 ? true : false); w2.pack= (Math.random() > .5 ? true : false); }//for (build wolves) //set up grass grass= new Vector(VECTOR_SIZE, 0); grassBranch= new Vector(grass.size(), 1); // grassPos= new Vector(VECTOR_SIZE, 0); // Alpha alpha= createAlpha(); for (i= 0; i < VECTOR_SIZE; i++){ BranchGroup b= buildBranchGroup(); TransformGroup t= new TransformGroup(); Transform3D t3= new Transform3D(); grass.addElement(new Grass3D(""+i, grassAppear)); t3.setTranslation(new Vector3d((5-Math.random()*10), -.5+GRASS_LENGTH/(4-((Grass3D)grass.elementAt(i)).length), (5 - Math.random()*10))); t3.get(((Grass3D)grass.elementAt(i)).position); ((Grass3D)grass.elementAt(i)).x= (int)((Grass3D)grass.elementAt(i)).position.x; ((Grass3D)grass.elementAt(i)).z= (int)((Grass3D)grass.elementAt(i)).position.z; t3.setScale(GRASS_LENGTH/(4-((Grass3D)grass.elementAt(i)).length)); t.setTransform(t3); t.setCapability(TransformGroup.ALLOW_TRANSFORM_READ); t.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); t.setCapability(TransformGroup.ALLOW_TRANSFORM_READ); t.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); t.addChild(((Grass3D)grass.elementAt(i)).cone); b.addChild(t); grassBranch.addElement(b); animalRoot.addChild(b); /* AnimalRotator ar= new AnimalRotator(buildBranchGroup(), buildBranchGroup()); ar.trans3D.setTranslation(new Vector3d((5-Math.random()*10), -.5 + GRASS_LENGTH/8, (5 - Math.random()*10))); grass.addElement(new Grass3D(""+i, grassAppear, ar.trans3D)); ar.trans3D.get(((Grass3D)grass.elementAt(i)).position); ar.local3D.setScale(GRASS_LENGTH/(4-((Grass3D)grass.elementAt(i)).length)); ar.localT.setCapability(TransformGroup.ALLOW_TRANSFORM_READ); ar.localT.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); ar.t.setCapability(TransformGroup.ALLOW_TRANSFORM_READ); ar.t.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); ar.t.addChild(((Grass3D)grass.elementAt(i)).cone); Vector3f v= new Vector3f(); ar.trans3D.get(v); PositionInterpolator p= new PositionInterpolator(alpha, ar.t, ar.trans3D, v.x, v.x); p.setSchedulingBounds(bounds); ar.t.addChild(p); grassPos.addElement(p); angle= Math.atan(grass(i).position.z/grass(i).position.x); if (grass(i).position.x < 0) angle+= Math.PI/2; Transform3D t3d= p.getAxisOfTranslation(); t3d.rotY(angle); grassBranch.addElement(ar.localU); animalRoot.addChild(ar.localU); */ }//for (building grass) //remove all text objects for (i= 0, num= txtTrans.numChildren(); i < num; i++){ txtTrans.removeChild(i); }//for }//setUp /* PredPrey3D init */ public void init() { start(); }//init /* Constructor */ public PredPrey3D(){ System.out.println("Constructing new PredPrey3D"); setLayout(new BorderLayout()); add("Center", c); //Create a simple scene and attach it to the virtual universe BranchGroup scene = createSceneGraph(); u.addBranchGraph(scene); }//PredPrey3D /* PredPrey3D Run method */ public void run(){ try{ done= false; sheepCount= new Vector(1, 10); wolfCount= new Vector(1, 10); time= 0; sheepTime= 0; wolfTime= 0; sheepCount.addElement(new Entry(2*sheepNumScroll.getValue(), 0)); wolfCount.addElement(new Entry(2*wolfNumScroll.getValue(), 0)); int oldSheepCount= ((Entry)sheepCount.elementAt(0)).num, oldWolfCount= ((Entry)wolfCount.elementAt(0)).num; int loop= 0; //main program loop while (!done){ numSheepAlive= sheep.size(); numWolfAlive= wolf.size(); //test to see if there are still live animals of both classes if (numSheepAlive == 0 || numWolfAlive == 0){ done= true; for (int i= 0, num= txtTrans.numChildren(); i < num; i++){ txtTrans.removeChild(i); }//for Text3D txt; if (numWolfAlive == 0){ txt= new Text3D(f3d, "All wolves died", new Point3f(-3f, 2f, -12f)); System.out.println("All of wolf class died"); } else{ txt= new Text3D(f3d, "All sheep died", new Point3f(-3f, 2f, -12f)); System.out.println("All of sheep class died"); } Shape3D shape= new Shape3D(); Appearance app= new Appearance(); Material mat= new Material(); app.setMaterial(mat); shape.setGeometry(txt); shape.setAppearance(app); BranchGroup btext= buildBranchGroup(); btext.addChild(shape); txtTrans.addChild(btext); break; }//if (animals died) if (oldSheepCount != numSheepAlive) sheepCount.addElement(new Entry(numSheepAlive, time)); if (oldWolfCount != numWolfAlive) wolfCount.addElement(new Entry(numWolfAlive, time)); oldSheepCount= numSheepAlive; oldWolfCount= numWolfAlive; time++; if (time%10 == 0) System.out.println("Time: "+ time); //move sheep and wolves moveSheep(); moveWolves(); //grow the grass for (int i= 0; i < amountGrass; i++){ tempGrass= grass(i); if (tempGrass.time >= 50){ if (tempGrass.length < 3){ tempGrass.length++; trans3D(i, GRASS).get(grassLoc); grassLoc.y= -.5+(GRASS_LENGTH/(4-((Grass3D)grass.elementAt(i)).length))/2; trans3D(i, GRASS).setScale(GRASS_LENGTH/(4-tempGrass.length)); trans3D(i, GRASS).setTranslation(grassLoc); trans(i, GRASS).setTransform(trans3D(i, GRASS)); tempGrass.time= 0; // System.out.println("grass: "+ tempGrass.name +" grew to "+ tempGrass.length); } else{ if (tempGrass.time > 200) addGrass(tempGrass); else tempGrass.time++; } }//if (time to grow) else{ tempGrass.time++; } }//for (handle all grass) try{ runner.sleep(500); }//try catch(InterruptedException e){ System.out.println("sleep interrupted: " +e.toString()); }//catch (sleep) runner.yield(); }//while (!done) }//try catch(NullPointerException e){ System.out.println("Error in run: " + e.toString()); throw e; }//catch System.out.println("after while loop"); }//run //moveSheep private void moveSheep(){ for (int a= 0; a < sheep.size(); a++){ sheepSize= sheep.size(); Sheep3D s= sheep(a); s.age++; s.eat++; s.reproduce++; if (s.eat > SHEEP_EAT || s.age > SHEEP_AGE){ /* for (int i= 0, num= animalRoot.numChildren(); i < num; i++){ if (((BranchGroup)sheepBranch.elementAt(a)) == animalRoot.getChild(i)){ System.out.println("sheep "+ s.name +" died"); // animalRoot.removeChild(i); break; }//if }//for i */ System.out.println("Removing dead sheep "+ s.name); ((BranchGroup)sheepBranch.elementAt(a)).detach(); sheepBranch.removeElementAt(a); sheep.removeElementAt(a); continue; }//if sheep died //resize and position accordingly // ((BranchGroup)sheepBranch.elementAt(a)).detach(); Transform3D t3= trans3D(a, SHEEP); t3.setScale(((s.age+SHEEP_AGE/3)/100 < 1 ? (s.age+SHEEP_AGE/3)/100 : 1)); s.position.y= (float)(-.5+trans3D(a, SHEEP).getScale()/2); //move randomly s.position.x+= (float)(1 - 2*Math.random()); s.position.z+= (float)(1 - 2*Math.random()); //System.out.println("sheep "+ s.name +" "+ s.position.toString()); t3.setTranslation(s.position); trans(a, SHEEP).setTransform(t3); // animalRoot.addChild((BranchGroup)sheepBranch.elementAt(a)); /* angle= Math.atan(s.position.z/s.position.x); if (s.position.x < 0) angle+= Math.PI/2; PositionInterpolator p= (PositionInterpolator)sheepPos.elementAt(a); Transform3D t3d= p.getAxisOfTranslation(); t3d.rotY(angle); p.setStartPosition(p.getEndPosition() + (float)Math.sqrt(s.position.x*s.position.x + s.position.z*s.position.z)); */ /* if (s.reproduce > SHEEP_REP){ s.rep= true; trans3D(a, SHEEP).get(s.position); s.x= (int)s.position.x; s.z= (int)s.position.z; for (int i= 0; i < sheepSize; i++){ tempSheep= sheep(i); tempDist= dist(s, tempSheep); if (tempDist == -1){ s= new Sheep3D(sheepTotalCount, sheepAppear); } else if (tempDist == -2){ tempSheep= new Sheep3D(sheepTotalCount, sheepAppear); } if (tempSheep.sex != s.sex && tempSheep.rep && tempDist <= 3*sheepSight/2){ s.mate= i; tempSheep.mate= a; }//if }//for (all other sheep) }//if (can reproduce) else{ s.rep= false; }//else (can't reproduce) if (s.eat > 0){ for (int i=0; i < VECTOR_SIZE; i++){ tempGrass= grass(i); tempDist= dist(tempGrass, s); if (tempDist == -1){ TransformGroup tg= new TransformGroup(); Transform3D t3= new Transform3D(); tg.getTransform(t3); t3.setTranslation(new Vector3d((float)(width/2-Math.random()*width), 1f, (float)(length/2-Math.random()*length))); t3.setScale(.3); tempGrass= new Grass3D(""+i, grassAppear, t3); } else if (tempDist == -2){ tempSheep= new Sheep3D(sheepTotalCount, sheepAppear); } if (tempGrass.length > 0 && dist(tempGrass, s) <= 10){ s.eat= -100; s.seeGrass= false; tempGrass.length--; if (s.mem[(int)(s.x/width)][(int)(s.z/length)] < MAX_MEM) s.mem[(int)(s.x/width)][(int)(s.z/length)]+= 10; break; }//if (within 10 of grass) else if (tempGrass.length > 0 && dist(tempGrass, s) < sheepSight + 25){ distance= 500; double temp; temp= dist(tempGrass, s); if (temp < distance){ distance= temp; s.seeGrass= true; s.grassX= tempGrass.x; s.grassZ= tempGrass.z; if (s.mem[s.x/width][s.z/length] < MAX_MEM) s.mem[s.x/width][s.z/length]+= 1; }//if }//else (look for grass) }//for (all grass) }//if (eat > 0) wolfSize= wolf.size(); for (int i=0; i < wolfSize; i++){ tempWolf= wolf(i); if (dist(s, tempWolf) <= sheepSight){ s.seeWolf= true; s.wolfX= tempWolf.x; s.wolfZ= tempWolf.z; break; }//if (see wolf) }//for (all wolves) int temp, xp= s.x/width, zp= s.z/length; if ((s.memory++ % 15) == 0){ for (int i= 0; i < 10; i++){ for (int j= 0; j < 10; j++){ if (s.mem[i][j] < 0) s.mem[i][j]+= 1; else if (s.mem[i][j] > 0) s.mem[i][j]-= 1; }//for (j) }//for (i) }//if (time to change mem) if ((xp == 0 && (zp == 0 || zp >= 9)) || (xp >= 9 && (zp == 0 || zp >= 9))){ sheepMoveMem(s); } else if (s.mate != a){ tempSheep= sheep(s.mate); if (dist(s, tempSheep) <= 10){ if (s.mem[s.x/width][s.z/length] < MAX_MEM) s.mem[s.x/width][s.z/length]+= 20; if (tempSheep.mem[tempSheep.x/width][tempSheep.z/length] < MAX_MEM) tempSheep.mem[tempSheep.x/width][tempSheep.z/length]+= 20; tempSheep.mate= s.mate; addSheep(s, sheep(s.mate)); s.mate= a; } else { temp= s.x - tempSheep.x; s.x-= 5 * (int)(temp)/((temp != 0 ? Math.abs(temp) : 1)); temp= s.z - tempSheep.z; s.z-= 5 * (int)(temp)/((temp != 0 ? Math.abs(temp) : 1)); } }// if (mate is not same as self) else if (s.seeWolf){ s.mem[s.x/width][s.z/length]-= 2; if (s.pack && countSheep(s) > 1){ int oldest= a; for (int i= 0; i < sheepSize; i++){ tempSheep= sheep(i); if (dist(s, tempSheep) <= sheepSight && tempSheep.age > s.age){ s.oldest= i; } } if (s.oldest != a){ temp= s.x - sheep(oldest).x; s.x-= 7 * (int)(temp)/((temp != 0 ? Math.abs(temp) : 1)); temp= s.z - sheep(oldest).z; s.z-= 7 * (int)(temp)/((temp != 0 ? Math.abs(temp) : 1)); }//if (s is not oldest) else{ temp= s.x - s.wolfX; s.x+= 7 * (int)(temp)/((temp != 0 ? Math.abs(temp) : 1)); temp= s.z - s.wolfZ; s.z+= 7 * (int)(temp)/((temp != 0 ? Math.abs(temp) : 1)); }//else (just run away) } // if (s.pack && countSheep(i) > 1) else{ temp= s.x - s.wolfX; s.x+= 7 * (int)(temp)/((temp != 0 ? Math.abs(temp) : 1)); temp= s.z - s.wolfZ; s.z+= 7 * (int)(temp)/((temp != 0 ? Math.abs(temp) : 1)); }//see wolf (run away) s.seeWolf= false; } // if (seeWolf) else if (s.seeGrass){ temp= s.x - s.grassX; s.x-= 5 * (int)(temp)/((temp != 0 ? Math.abs(temp) : 1)); temp= s.z - s.grassZ; s.z-= 5 * (int)(temp)/((temp != 0 ? Math.abs(temp) : 1)); s.seeGrass= false; }// if (seeGrass) else{ int count= countSheep(s); if ((s.move++ % 5) == 0){ if (s.mem[s.x/width][s.z/length] > MIN_MEM) s.mem[s.x/width][s.z/length]-= 2; s.moveX= 5 - (int)(Math.random() * 10); s.moveZ= 5 - (int)(Math.random() * 10); if (s.mem[s.x/width][s.z/length] < 0) sheepMoveMem(s); else if (Math.random() < .5) sheepMoveMem(s); }//if (time to pick new dir) s.x+= s.moveX; if (s.pack){ if (countSheep(s) < count) s.x-= 2*s.moveX; } s.z+= s.moveZ; if (s.pack){ if (countSheep(s) < count) s.z-= 2*s.moveZ; } }//move randomly if (s.x < -width/2) s.x= -width/2; else if (s.x > width/2) s.x= width/2; if (s.z < -length/2) s.z= -length/2; else if (s.z > length/2) s.z= length/2; s.position.x= s.x; s.position.z= s.z; trans3D(a, SHEEP).setTranslation(s.position); */ }//for (all sheep) }//moveSheep //sheepMoveMem private void sheepMoveMem(Sheep3D s){ double dir[]= new double[4]; int squares, i, j, currX= s.x/length, currZ= s.z/length; for (i= 0, squares= 0, dir[0]= 0; i < 10; i++){ for (j= 0; j < currZ; j++){ squares++; dir[0]+= s.mem[i][j]; } } dir[0]/= (squares != 0 ? squares : 1); for (i= 0, squares= 0, dir[1]= 0; i < 10; i++){ for (j= currZ + 1; j < 10; j++){ squares++; dir[1]+= s.mem[i][j]; } } dir[1]/= (squares != 0 ? squares : 1); if (dir[0] != dir[1]) s.moveZ+= 10 * Math.random() * (dir[0] > dir[1] ? -1 : 1); else s.moveZ+= 10 * Math.random() * (Math.random() > .5 ? 1 : -1); for (j= 0, squares= 0, dir[2]= 0; j < 10; j++){ for (i= 0; i < currZ; i++){ squares++; dir[2]+= s.mem[i][j]; } } dir[2]/= (squares != 0 ? squares : 1); for (j= 0, squares= 0, dir[3]= 0; j < 10; j++){ for (i= currX + 1; i < 0; i++){ squares++; dir[3]+= s.mem[i][j]; } } dir[3]/= (squares != 0 ? squares : 1); if (dir[2] != dir[3]){ s.moveX+= 10 * Math.random() * (dir[2] > dir[3] ? -1 : 1); } else{ s.moveX+= 10 * Math.random() * (Math.random() > .5 ? 1 : -1); } s.x+= s.moveX; s.z+= s.moveZ; }//sheepMoveMem //addSheep public void addSheep(Sheep3D f, Sheep3D m){ if (sheep.size() < 100){ int firstFree= -1; f.reproduce= SHEEP_REP/2; f.rep= false; m.reproduce= SHEEP_REP/2; m.rep= false; Sheep3D s= new Sheep3D(sheepTotalCount, f.appear); sheepTotalCount++; s.x= f.x; s.z= f.z; s.generation= (f.generation > m.generation ? f.generation : m.generation) + 1; if (f.pack && m.pack) s.pack= true; else if (!f.pack && !m.pack) s.pack= false; else{ s.pack= (Math.random() > .5 ? true : false); } for (int k= 0; k < 10; k++){ for (int j= 0; j < 10; j++){ s.mem[k][j]= (int)((f.mem[k][j] + m.mem[k][j])/2); } } sheep.addElement(s); }//if (sheep.size() < 100) }//addSheep //count sheep private int countSheep(Sheep3D s){ int shp= 0; try{ if (s != null){ for (int j= 0; j < sheep.size(); j++){ tempSheep= sheep(j); if (dist(s, tempSheep) <= sheepSight){ shp++; } }//for (all sheep) }//if (s != null) }//try catch(NullPointerException e){ System.out.println("error in countSheep: " + e.toString()); } return shp; }//countSheep //sheepWarn public void sheepWarn(Sheep3D s){ int xs, zs; for (int j= 0; j < sheep.size(); j++){ tempSheep= sheep(j); if (dist(s, tempSheep) <= (sheepSight + 20)){ xs= s.x/width; zs= s.z/length; if (tempSheep.mem[xs][zs] > MIN_MEM) tempSheep.mem[xs][zs]-= 30; }//if }//for //make other sheep see wolf }//sheepWarn //moveWolves private void moveWolves(){ for (int a= 0; a < wolf.size(); a++){ wolfSize= wolf.size(); Wolf3D w= wolf(a); w.age++; w.reproduce++; w.eat++; w.seeSheep= false; if (w.eat > WOLF_EAT || w.age > WOLF_AGE){ for (int i= 0, num= animalRoot.numChildren(); i < num; i++){ if (((BranchGroup)wolfBranch.elementAt(a)) == animalRoot.getChild(i)){ System.out.println("wolf"+ w.name +" died"); animalRoot.removeChild(i); break; }//if }//for i wolfBranch.removeElementAt(a); wolf.removeElementAt(a); continue; }//if wolf died //resize and position accordingly Transform3D t3= trans3D(a, WOLF); t3.setScale(((w.age+WOLF_AGE/3)/100 < 1 ? (w.age+WOLF_AGE/3)/100 : 1)); w.position.y= (float)(-.5+trans3D(a, WOLF).getScale()/2); t3.setTranslation(w.position); //move randomly w.position.x+= (float)(.02 - .04*Math.random()); w.position.z+= (float)(.02 - .04*Math.random()); t3.setTranslation(w.position); angle= Math.atan(w.position.z/w.position.x); if (w.position.x < 0) angle+= Math.PI/2; t3.rotY(angle); trans(a, WOLF).setTransform(t3); /* PositionInterpolator p= (PositionInterpolator)wolfPos.elementAt(a); Transform3D t3d= p.getAxisOfTranslation(); t3d.rotY(angle); p.setStartPosition(p.getEndPosition() + (float)Math.sqrt(w.position.x*w.position.x + w.position.z*w.position.z)); */ /* if (w.reproduce > WOLF_REP){ for (int i= 0; i < wolfSize; i++){ tempWolf= wolf(i); tempDist= dist(w, tempWolf); if (w.sex != tempWolf.sex && tempWolf.rep && tempDist <= 3/2*wolfSight){ w.mate= i; tempWolf.mate= a; }//if }//for }//if else{ w.rep= false; } if (w.eat > 0){ int wolves= countWolf(w); if (w.seeSheep){ for (int i= 0; i < sheep.size(); i++){ tempSheep= sheep(i); if (dist(tempSheep, w) <= 10 && countSheep(tempSheep) <= 2*wolves){ sheepWarn(tempSheep); sheep.removeElementAt(i); w.eat= -75; w.attack= false; w.seeSheep= false; w.rep= true; w.mem[w.x/width][w.z/length]+= 20; } //if }//for }//if (seeSheep) else{ double temp= 1000; for (int i= 0; i < sheep.size(); i++){ tempSheep= sheep(i); tempDist= dist(tempSheep, w); if (tempDist <= wolfSight){ if (w.mem[w.x/width][w.z/length] < MAX_MEM) w.mem[w.x/width][w.z/length]+= 2; w.shp= countSheep(tempSheep); if (tempDist < temp && 2*wolves >= w.shp){ temp= tempDist; tempSheep= sheep(i); w.sheepName= tempSheep.getName(); w.shp= i; w.sheepX= tempSheep.x; w.sheepZ= tempSheep.z; w.seeSheep= true; if (w.pack){ for (int j= 0; j < wolfSize; j++){ tempWolf= wolf(j); if (tempWolf.pack && tempWolf.eat > 0 && !tempWolf.seeSheep && dist(w, tempWolf) <= wolfSight){ if (tempWolf.mem[tempWolf.x/width][tempWolf.z/length] < MAX_MEM) tempWolf.mem[tempWolf.x/width][tempWolf.z/length]+= 2; tempWolf.seeSheep= true; tempWolf.seeSheep= w.seeSheep; tempWolf.sheepX= tempSheep.x; tempWolf.sheepZ= tempSheep.z; }//if (add to mem) }//for (wolf in sight) }//if (pack) break; }//if (2*wolf >= sheep) else{ w.seeSheep= false; }//else } //if (sheep is in range) }//for (all sheep) } //if (!attack) if (w.sheepName != null && !w.sheepName.equals(sheep(w.shp).getName())){ w.seeSheep= false; }//if (names don't match) else if (w.seeSheep && w.pack){ for (int i= 0; i < wolfSize; i++){ tempWolf= wolf(i); if (tempWolf.pack && dist(w, tempWolf) < wolfSight && !tempWolf.seeSheep){ tempWolf.seeSheep= true; tempWolf.seeSheep= w.seeSheep; tempWolf.sheepX= w.sheepX; tempWolf.sheepZ= w.sheepZ; } }//for (all wolves) }// if (seeSheep) }//if (eat >= 0) int temp; if ((w.memory++ % 15) == 0){ for (int i= 0; i < 10; i++){ for (int j= 0; j < 10; j++){ if (w.mem[i][j] < 0) w.mem[i][j]+= 1; if (w.mem[i][j] > 0) w.mem[i][j]-= 1; } }//for (add to mem) }//if (time to change mem) if (w.mate != a){ tempWolf= wolf(w.mate); if (dist(w, tempWolf) < 20){ if (w.mem[w.x/width][w.z/length] < MAX_MEM) w.mem[w.x/width][w.z/length]+= 20; if (tempWolf.mem[tempWolf.x/width][tempWolf.z/length] < MAX_MEM) tempWolf.mem[tempWolf.x/width][tempWolf.z/length]+= 20; tempWolf.mate= w.mate; tempWolf.reproduce= 0; w.reproduce= 0; addWolf(w); w.mate= a; }//if (mate is within range) else { temp= w.x - tempWolf.x; w.x-= 10 * (int)(temp)/((temp != 0 ? Math.abs(temp) : 1)); temp= w.z - tempWolf.z; w.z-= 10 * (int)(temp)/((temp != 0 ? Math.abs(temp) : 1)); } }//if (mating) else if (w.seeSheep){ temp= w.x - w.sheepX; w.x-= 10 * (int)(temp)/((temp != 0 ? Math.abs(temp) : 1)); temp= w.z - w.sheepZ; w.z-= 10 * (int)(temp)/((temp != 0 ? Math.abs(temp) : 1)); }//if (seeSheep) else{ int count= countWolf(w); if ((w.move++ %5) == 0){ w.mem[w.x/width][w.z/length]-= 2; w.moveX= 10 - (int)(Math.random() * 20); w.moveZ= 10 - (int)(Math.random() * 20); if (w.mem[w.x/width][w.z/length] < 0) wolfMoveMem(w); else if (Math.random() > .5){ wolfMoveMem(w); } } w.x+= w.moveX; if (w.pack && countWolf(w) < count-.8*wolfSize){ w.x-= 2*w.moveX; } w.z+= w.moveZ; if (w.pack && countWolf(w) < count-.8*wolfSize){ w.z-= 2*w.moveZ; } }//else (move random) if (w.x < -width/2) w.x= -width/2; else if (w.x > width/2 - 10) w.x= width/2 - 10; if (w.z < -length/2) w.z= -length/2; else if (w.z > length/2 - 10) w.z= length/2 - 10; */ }//for (all wolves) }//moveWolves //wolfMoveMem private void wolfMoveMem(Wolf3D w){ double dir[]= new double[4]; int squares, i, j; for (i= 0, squares= 0, dir[0]= 0; i < 10; i++){ for (j= 0; j < w.z/length; j++){ squares++; dir[0]+= w.mem[i][j]; } } dir[0]/= (squares != 0 ? squares : 1); for (i= 0, squares= 0, dir[1]= 0; i < 10; i++){ for (j= w.z/length + 1; j < 10; j++){ squares++; dir[1]+= w.mem[i][j]; } } dir[1]/= (squares != 0 ? squares : 1); if (dir[0] != dir[1]) w.moveZ+= 10 * Math.random() * (dir[0] > dir[1] ? -1 : 1); else w.moveZ+= 10 * Math.random() * (Math.random() > .5 ? 1 : -1); for (j= 0, squares= 0, dir[2]= 0; j < 10; j++){ for (i= 0; i < w.x/width; i++){ squares++; dir[2]+= w.mem[i][j]; } } dir[2]/= (squares != 0 ? squares : 1); for (j= 0, squares= 0, dir[3]= 0; j < 10; j++){ for (i= w.x/width + 1; i < 0; i++){ squares++; dir[3]+= w.mem[i][j]; } } dir[3]/= (squares != 0 ? squares : 1); if (dir[2] != dir[3]) w.moveX+= 10 * Math.random() * (dir[2] > dir[3] ? -1 : 1); else w.moveX+= 10 * Math.random() * (Math.random() > .5 ? 1 : -1); w.x+= w.moveX; w.z+= w.moveZ; }//wolfMoveMem //addWolf public void addWolf(Wolf3D w){ if (wolf.size() < 100){ Wolf3D nw= new Wolf3D(wolf.size(), w.appear); nw.x= w.x; nw.z= w.z; tempWolf= wolf(w.mate); nw.generation= (w.generation > tempWolf.generation ? w.generation : tempWolf.generation) + 1; if (w.pack && tempWolf.pack) nw.pack= true; else if (!w.pack && !tempWolf.pack) nw.pack= false; else{ double temp= Math.random(); nw.pack= (temp > .5 ? true : false); } wolf.addElement(nw); TransformGroup tg= new TransformGroup(); Transform3D t3= new Transform3D(); tg.getTransform(t3); t3.setScale(initAnimalSize); tg.setCapability(TransformGroup.ALLOW_TRANSFORM_READ); tg.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); tg.addChild(nw.box); }//if (wolf.size() < 100) }//addWolf //count wolf public int countWolf(Wolf3D w){ int wlf= 1; wolfSize= wolf.size(); for (int i= 0; i < wolfSize; i++){ if (dist(w, wolf(i)) <= wolfSight){ wlf++; } } return wlf; }//countWolf //add grass private void addGrass(Grass3D parent){ System.out.println("added grass"); BranchGroup b= buildBranchGroup(); TransformGroup t= new TransformGroup(); Transform3D t3= new Transform3D(); t3.setTranslation(new Vector3d((5-Math.random()*10), -GRASS_LENGTH/8, (5 - Math.random()*10))); t3.get(((Grass3D)grass.elementAt(grass.size() - 1)).position); t3.setScale(GRASS_LENGTH/(4-((Grass3D)grass.elementAt(grass.size() - 1)).length)); t.setCapability(TransformGroup.ALLOW_TRANSFORM_READ); t.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); t.setCapability(TransformGroup.ALLOW_TRANSFORM_READ); t.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); t.addChild(((Grass3D)grass.elementAt(grass.size() - 1)).cone); b.addChild(t); grassBranch.addElement(b); animalRoot.addChild(b); /* AnimalRotator ar= new AnimalRotator(buildBranchGroup(), buildBranchGroup()); ar.trans3D.setTranslation(new Vector3d(parent.position.x + (.5-Math.random()), -.5 + GRASS_LENGTH/8, parent.position.z + (.5 - Math.random()))); grass.addElement(new Grass3D(""+ grass.size(), grassAppear, ar.trans3D)); ar.trans3D.get(((Grass3D)grass.elementAt(grass.size() - 1)).position); ar.local3D.setScale(GRASS_LENGTH/(4-((Grass3D)grass.elementAt(grass.size() - 1)).length)); ar.localT.setCapability(TransformGroup.ALLOW_TRANSFORM_READ); ar.localT.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); ar.t.setCapability(TransformGroup.ALLOW_TRANSFORM_READ); ar.t.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); ar.t.addChild(((Grass3D)grass.elementAt(grass.size() - 1)).cone); Vector3f v= new Vector3f(); ar.trans3D.get(v); Alpha alpha= createAlpha(); PositionInterpolator p= new PositionInterpolator(alpha, ar.t, ar.trans3D, v.x, v.x); p.setSchedulingBounds(bounds); ar.t.addChild(p); // grassPos.addElement(p); angle= Math.atan(grass(grass.size() - 1).position.z/grass(grass.size() - 1).position.x); if (grass(grass.size() - 1).position.x < 0) angle+= Math.PI/2; Transform3D t3d= p.getAxisOfTranslation(); t3d.rotY(angle); grassBranch.addElement(ar.localU); animalRoot.addChild(ar.localU); */ }//add grass //dist method public double dist(Animal a, Animal b){ try{ return java.lang.Math.sqrt(java.lang.Math.pow((a.x - b.x), 2) + java.lang.Math.pow((a.z - b.z), 2)); } catch(NullPointerException e){ if (a == null){ System.out.println("a was Null. b was: " +b.toString()); return -1.0; } else if (b == null){ System.out.println("b was Null. a was: " +a.toString()); return -2.0; } else{ System.out.println("not real sure what it was"); return -1.0; } } }//dist //sheep private Sheep3D sheep(int i){ if (i < sheep.size()) return (Sheep3D)sheep.elementAt(i); else{ System.out.println("***something screwed up and have to create new sheep in sheep(int)***"); Sheep3D s= new Sheep3D(sheepTotalCount, sheepAppear); sheep.addElement(s); sheepTotalCount= sheep.size(); AnimalRotator ar= new AnimalRotator(buildBranchGroup(), buildBranchGroup()); ar.trans3D.setTranslation(new Vector3d((5-Math.random()*10), -initAnimalSize*SHEEP_SIZE/2, (5 - Math.random()*10))); ar.trans3D.get(((Sheep3D)sheep.elementAt(i)).position); ar.local3D.setScale(initAnimalSize); ar.localT.setCapability(TransformGroup.ALLOW_TRANSFORM_READ); ar.localT.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); ar.t.setCapability(TransformGroup.ALLOW_TRANSFORM_READ); ar.t.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); ar.t.addChild(((Sheep3D)sheep.elementAt(i)).sphere); Vector3f v= new Vector3f(); Alpha alpha= createAlpha(); ar.trans3D.get(v); PositionInterpolator p= new PositionInterpolator(alpha, ar.t, ar.trans3D, v.x, v.x + 5 - (float)Math.random()*10); p.setSchedulingBounds(bounds); ar.t.addChild(p); // sheepPos.addElement(p); sheepBranch.addElement(ar.localU); animalRoot.addChild(ar.localU); return s; }//else }//sheep private Wolf3D wolf(int i){ if (i < wolf.size()) return (Wolf3D)wolf.elementAt(i); else{ System.out.println("***something screwed up and have to create new wolf in wolf(int)***"); Wolf3D w= new Wolf3D(wolfTotalCount, wolfAppear); wolf.addElement(w); wolfTotalCount= wolf.size(); AnimalRotator ar= new AnimalRotator(buildBranchGroup(), buildBranchGroup()); ar.trans3D.setTranslation(new Vector3d((5-Math.random()*10), -initAnimalSize*WOLF_SIZE/2, (5 - Math.random()*10))); ar.trans3D.get(((Wolf3D)wolf.elementAt(i)).position); ar.local3D.setScale(initAnimalSize); ar.localT.setCapability(TransformGroup.ALLOW_TRANSFORM_READ); ar.localT.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); ar.t.setCapability(TransformGroup.ALLOW_TRANSFORM_READ); ar.t.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); ar.t.addChild(((Wolf3D)wolf.elementAt(i)).box); Vector3f v= new Vector3f(); Alpha alpha= createAlpha(); ar.trans3D.get(v); PositionInterpolator p= new PositionInterpolator(alpha, ar.t, ar.trans3D, v.x, v.x + 5 - (float)Math.random()*10); p.setSchedulingBounds(bounds); ar.t.addChild(p); // wolfPos.addElement(p); wolfBranch.addElement(ar.localU); animalRoot.addChild(ar.localU); return w; }//else }//wolf private Grass3D grass(int i){ return (Grass3D)grass.elementAt(i); }//grass //PredPrey3D start method public void start(){ if (runner == null){ runner= new Thread(this); } if (!runner.isAlive()){ runner.start(); } } //start //trans private TransformGroup trans(int i, int type){ TransformGroup t= new TransformGroup(); try{ if (type == SHEEP && i < sheepBranch.size()) t= (TransformGroup)((BranchGroup)sheepBranch.elementAt(i)).getChild(0); else if (type == WOLF && i < wolfBranch.size()) t= (TransformGroup)((BranchGroup)wolfBranch.elementAt(i)).getChild(0); else if (i < grassBranch.size()) t= (TransformGroup)((BranchGroup)grassBranch.elementAt(i)).getChild(0); } catch(ArrayIndexOutOfBoundsException e){ System.out.println("type: "+ type +" error: "+ e.toString()); }//catch finally{ return t; } }//trans (so you don't have to cast the vector each time) //trans3D private Transform3D trans3D(int i, int type){ Transform3D t3d= new Transform3D(); if (type == SHEEP) trans(i, SHEEP).getTransform(t3d); else if (type == WOLF) trans(i, WOLF).getTransform(t3d); else trans(i, GRASS).getTransform(t3d); return t3d; }//trans (so you don't have to cast the vector each time) //buildBranchGroup private BranchGroup buildBranchGroup(){ BranchGroup branch= new BranchGroup(); branch.setCapability(BranchGroup.ALLOW_DETACH); branch.setCapability(BranchGroup.ALLOW_CHILDREN_READ); branch.setCapability(BranchGroup.ALLOW_CHILDREN_WRITE); branch.setCapability(BranchGroup.ALLOW_CHILDREN_EXTEND); return branch; }//buildBranchGroup //createAlpha private Alpha createAlpha(){ return new Alpha(3, /*loop count*/ Alpha.INCREASING_ENABLE, 0, /*triggerTime*/ 0, /*phaseDelayDuration*/ 1000, /*increasingAlphaDuration*/ 500, /*increasingAlphaRampDuration*/ 0, /*alphaAtOneDuration*/ 1000, /*decreasingAlphaDuration*/ 500, /*decreasingAlphaRampDuration*/ 0); /*alphaAtZeroDuration*/ }//createAlpha /* Add picking behavior to view memory maps of animals put upside down semi-transparent yellow cone above animal being observed //mouse listener public void mouseMoved(MouseEvent e){ int x= e.getX()+5, y= e.getY()+5; for (int i= 0; i < vars.arrayLength/2; i++){ if (vars.s[2*i].alive && Math.sqrt((x-(vars.s[2*i].x+5))*(x-(vars.s[2*i].x+5)) + (y-(vars.s[2*i].y+5))*(y-(vars.s[2*i].y+5))) < 15){ animal.setLocation(0, 2*i); } else if (vars.s[2*i+1].alive && Math.sqrt((x-(vars.s[2*i+1].x+5))*(x-(vars.s[2*i+1].x+5)) + (y-(vars.s[2*i+1].y+5))*(y-(vars.s[2*i+1].y+5))) < 15){ animal.setLocation(0, 2*i+1); } else if (vars.w[i].alive && Math.sqrt((x-(vars.w[i].x-5))*(x-(vars.w[i].x-5)) + (y-(vars.w[i].y-5))*(y-(vars.w[i].y-5))) < 15){ animal.setLocation(1, i); } }//for }//mouseMoved public void mouseClicked(MouseEvent e){ animal.setLocation(-1, 0); } public void mouseDragged(MouseEvent e){} public void mousePressed(MouseEvent e){} public void mouseReleased(MouseEvent e){} public void mouseEntered(MouseEvent e){} public void mouseExited(MouseEvent e){} */ //adjustment listener public void adjustmentValueChanged(AdjustmentEvent e){ Scrollbar s= (Scrollbar)e.getSource(); Integer value= new Integer(s.getValue()); if (s.equals(sheepNumScroll)) sheepNumText.setText(value.toString()); else if (s.equals(sheepAgeScroll)) sheepAgeText.setText(value.toString()); else if (s.equals(sheepEatScroll)) sheepEatText.setText(value.toString()); else if (s.equals(wolfNumScroll)) wolfNumText.setText(value.toString()); else if (s.equals(wolfAgeScroll)) wolfAgeText.setText(value.toString()); else wolfEatText.setText(value.toString()); } //action listener public void actionPerformed(ActionEvent e){ Object o= e.getSource(); if (o instanceof Button){ if (o.equals(reset)){ done= true; setScrollBar(sheepNumScroll, sheepNumText); setScrollBar(sheepAgeScroll, sheepAgeText); setScrollBar(sheepEatScroll, sheepEatText); setScrollBar(wolfNumScroll, wolfNumText); setScrollBar(wolfAgeScroll, wolfAgeText); setScrollBar(wolfEatScroll, wolfEatText); for (; animalRoot.numChildren() > 0;){ animalRoot.removeChild(0); }//for (remove all objects in animalRoot) run(); return; } else if (o.equals(opt)){ if (options.isVisible()) options.setVisible(false); else{ options.setVisible(true); options.setLocation(this.getLocation().x + 610, this.getLocation().y); } } else if (o.equals(dispGraph)){ if (graph.isVisible()) graph.setVisible(false); else graph.setVisible(true); } else if (o.equals(hlp)){ if (help.isVisible()) help.setVisible(false); else help.setVisible(true); }//help else{ setVisible(false); graph.dispose(); options.dispose(); done= true; System.exit(0); } }//button clicked else if (o instanceof TextField){ TextField t= (TextField)o; Integer i= new Integer(t.getText()); int value= i.intValue(); if (t.equals(sheepNumText)){ setScrollBar(sheepNumScroll, sheepNumText); } else if (t.equals(sheepAgeText)){ setScrollBar(sheepAgeScroll, sheepAgeText); } else if (t.equals(sheepEatText)){ setScrollBar(sheepEatScroll, sheepEatText); } else if (t.equals(wolfNumText)){ setScrollBar(wolfNumScroll, wolfNumText); } else if (t.equals(wolfAgeText)){ setScrollBar(wolfAgeScroll, wolfAgeText); } else if (t.equals(wolfEatText)){ setScrollBar(wolfEatScroll, wolfEatText); } }//textField }//action listener //buildFrames private void buildFrames(){ try{ graphImg= createImage(300, 240); if (graphImg != null) graphBuf= graphImg.getGraphics(); graphPan= new Panel(); if (graphPan != null) graphG= graphPan.getGraphics(); //create text fields sheepNumText= new TextField((new Integer(sheepNumScroll.getValue())).toString()); sheepAgeText= new TextField((new Integer(sheepAgeScroll.getValue())).toString()); sheepEatText= new TextField((new Integer(sheepEatScroll.getValue())).toString()); wolfNumText= new TextField((new Integer(wolfNumScroll.getValue())).toString()); wolfAgeText= new TextField((new Integer(wolfAgeScroll.getValue())).toString()); wolfEatText= new TextField((new Integer(wolfEatScroll.getValue())).toString()); //add listeners for scrollbars sheepNumScroll.addAdjustmentListener(this); sheepAgeScroll.addAdjustmentListener(this); sheepEatScroll.addAdjustmentListener(this); sheepNumText.addActionListener(this); sheepAgeText.addActionListener(this); sheepEatText.addActionListener(this); wolfNumScroll.addAdjustmentListener(this); wolfAgeScroll.addAdjustmentListener(this); wolfEatScroll.addAdjustmentListener(this); wolfNumText.addActionListener(this); wolfAgeText.addActionListener(this); wolfEatText.addActionListener(this); //setup options options.setLocation(this.getLocation().x + 610, this.getLocation().y); options.addWindowListener(this); options.setLayout(new GridLayout(7, 4)); options.setResizable(false); options.add(new Label("SHEEP")); options.add(new Label("")); options.add(new Label("")); options.add(new Label("WOLVES")); options.add(new Label("Pairs:")); options.add(new Label("1:10")); options.add(new Label("Pairs:")); options.add(new Label("1:5")); options.add(sheepNumScroll); options.add(sheepNumText); options.add(wolfNumScroll); options.add(wolfNumText); options.add(new Label("Age:")); options.add(new Label("100:1000")); options.add(new Label("Age:")); options.add(new Label("100:1200")); options.add(sheepAgeScroll); options.add(sheepAgeText); options.add(wolfAgeScroll); options.add(wolfAgeText); options.add(new Label("Eat:")); options.add(new Label("50:500")); options.add(new Label("Eat:")); options.add(new Label("50:600")); options.add(sheepEatScroll); options.add(sheepEatText); options.add(wolfEatScroll); options.add(wolfEatText); options.pack(); //setup bottom bottom= new Panel(); bottom.setLayout(new GridLayout(1, 7)); reset= new Button("Reset"); exit= new Button("Exit"); opt= new Button("Options"); dispGraph= new Button("Graph"); hlp= new Button("Help"); reset.addActionListener(this); exit.addActionListener(this); opt.addActionListener(this); dispGraph.addActionListener(this); hlp.addActionListener(this); bottom.add(reset); bottom.add(new Label("")); bottom.add(opt); bottom.add(new Label("")); bottom.add(dispGraph); bottom.add(new Label("")); bottom.add(hlp); bottom.add(new Label("")); bottom.add(exit); add("South", bottom); //set up graph frame graph.setSize(300, 271); graph.setLocation(this.getLocation().x + 610, this.getLocation().y + options.getSize().height); graph.setResizable(false); graphScroll= new ScrollPane(); graphPan.setSize(400, 321); graphScroll.add(graphPan); graph.add(graphScroll); graph.addWindowListener(this); //set up help frame help.setSize(300, 200); help.setLocation(this.getLocation().x + 610, this.getLocation().y + options.getSize().height + graph.getSize().height); help.setResizable(false); String nl= System.getProperty("line.separator"); helpText= new TextArea("Use the cursors to move in the scene"+ nl +"Use PgUp-PgDn to look up and down"+ nl +"Hold down Alt to move without turning"); helpText.setEditable(false); help.add(helpText); help.addWindowListener(this); } catch(NullPointerException e){ System.out.println("Error in buildFrame: " + e.toString()); } }//buildFrames //Window Listener public void windowOpened(WindowEvent e){} public void windowActivated(WindowEvent e){} public void windowDeactivated(WindowEvent e){} public void windowIconified(WindowEvent e){} public void windowDeiconified(WindowEvent e){} public void windowClosed(WindowEvent e){} public void windowClosing(WindowEvent e){ if (e.getSource().equals(options)) options.setVisible(false); if (e.getSource().equals(help)) help.setVisible(false); else graph.setVisible(false); } //setScrollBar public void setScrollBar(Scrollbar s, TextField t){ Integer i= new Integer(t.getText()); int value= i.intValue(); value= (value < s.getMaximum() ? value : s.getMaximum() - 1); value= (value > s.getMinimum() ? value : s.getMinimum()); t.setText(new Integer(value).toString()); s.setValue(value); } //allow the program to be run as an application or applet public static void main(String[] args) { System.out.println("Running as an application"); new MainFrame(new PredPrey3D(), 600, 600); } }//class PredPrey3D /* Animal Class (sheep and wolf extend this) */ class Animal{ int age, x, z, otherx, otherz, eat, mate, move, reproduce, generation, memory; Vector3f position, otherPos; int mem[][]= {{0}}; double distance, moveX, moveZ; boolean alive, sex, pack, rep; Appearance appear; String name; public String getName(){ return name; }//getName public Animal(String n){ name= n; position= new Vector3f(); } public String toString(){ return (name); }//to string }//class Animal /* Sheep3D class */ class Sheep3D extends Animal{ int wolfX, wolfZ, grassX, grassZ, oldest; boolean seeWolf, seeGrass; Sphere sphere; //sheep constructor Sheep3D(int title, Appearance a){ super ((""+title)); mate= title; sex= (Math.random() >= .5 ? true : false); pack= (Math.random() >= .5 ? true : false); rep= false; age= eat= reproduce= wolfX= wolfZ= grassX= grassZ= move= memory= 0; sphere= new Sphere(1f, Sphere.GENERATE_TEXTURE_COORDS | Sphere.GENERATE_NORMALS, 20, a); mem= new int[10][10]; } }//class sheep /* Wolf3D class */ class Wolf3D extends Animal{ int sheepX, sheepZ, shp, wolves, mate, move; boolean seeSheep, attack; String sheepName; Box box; //wolf constructor Wolf3D(int title, Appearance a){ super ((""+title)); mate= title; age= eat= move= sheepX= sheepZ= reproduce= 0; mem= new int[10][10]; seeSheep= attack= alive= false; alive= false; rep= true; sex= (Math.random() >= .5 ? true : false); box= new Box(1f, 1f, 1f, Box.GENERATE_TEXTURE_COORDS | Box.GENERATE_NORMALS, a); } }//wolf class /* Grass3D class */ class Grass3D extends Animal{ int length, time; Cone cone; public Grass3D(String title, Appearance a/*, Transform3D trans*/){ super (title); length= (int)(Math.random()*3); time= (int)(Math.random()*50); appear= (Appearance)a.cloneNodeComponent(); appear.setCapability(Appearance.ALLOW_MATERIAL_READ); appear.setCapability(Appearance.ALLOW_MATERIAL_WRITE); Vector3f pos= new Vector3f(); // trans.get(pos); x= (int)pos.x; z= (int)pos.z; cone= new Cone(.25f, 1f, Cone.GENERATE_TEXTURE_COORDS | Cone.GENERATE_NORMALS, 4, 4, a); cone.setCapability(Shape3D.ALLOW_APPEARANCE_READ); cone.setCapability(Shape3D.ALLOW_APPEARANCE_WRITE); } }//class grass //class entry class Entry{ int num; long time; Entry(int n, long t){ num= n; time= t; } }//class Entry //class AnimalRotator class AnimalRotator{ BranchGroup localU, animal; TransformGroup localT, t; Transform3D local3D= new Transform3D(), trans3D= new Transform3D(); public AnimalRotator(BranchGroup b, BranchGroup b2){ animal= b; localU= b2; t= new TransformGroup(); localT= new TransformGroup(); if (t != null) t.getTransform(trans3D); else{ t.setTransform(trans3D); } if (localT != null) localT.getTransform(local3D); else{ localT.setTransform(local3D); } animal.addChild(t); localU.addChild(localT); localU.addChild(animal); }//constructor }//class AnimalRotator