This Formula is the key that solves this problem ,
Code:
/**
* Load Laser Guns starting from the NPC & pointing to the player with speed of 100f
*/
Load_LaserGun(new Sphere(10, 10, 0.2f),"man_smoke_1.png",spaceTurrent.getPhysicsLocation()
,Vector3f.ZERO,0.2f,0.15f,player.getPhysicsLocation().subtract(spaceTurrent.getPhysicsLocation()).normalize().mult(100f));
but this must be considered as well but in terms of physics Rotation in my case , not the Spatial Rotation
Code :
/**
* Turns the NPC physics viewDirection to face the player
* @param NPClookPosition Look direction vector
* @param upVector the Y-axis prependicular line
*/
private void rotateNPCTOFacePlayer(Vector3f NPClookPosition,Vector3f upVector) {
turrentNode.lookAt(NPClookPosition, upVector);
spaceTurrent.setPhysicsRotation(turrentNode.getLocalRotation());
}
Anyway, the problem is solved & Thanks for all !
Code :
package main_WorldMap;
import com.jme3.asset.AssetManager;
import com.jme3.bullet.BulletAppState;
import com.jme3.bullet.control.CharacterControl;
import com.jme3.bullet.control.RigidBodyControl;
import com.jme3.bullet.util.CollisionShapeFactory;
import com.jme3.effect.ParticleEmitter;
import com.jme3.effect.ParticleMesh;
import com.jme3.material.Material;
import com.jme3.math.ColorRGBA;
import com.jme3.math.Vector3f;
import com.jme3.renderer.RenderManager;
import com.jme3.renderer.ViewPort;
import com.jme3.scene.Geometry;
import com.jme3.scene.Mesh;
import com.jme3.scene.Node;
import com.jme3.scene.Spatial;
import com.jme3.scene.control.AbstractControl;
import com.jme3.scene.shape.Sphere;
import com.jme3.texture.Texture;
/**
*
* @author twisted AKA Pavly
*/
public class SpaceTurrentAutoShoot extends AbstractControl {
private final CharacterControl player;
private final RigidBodyControl spaceTurrent;
private final Node rootNode;
private final AssetManager assetManager;
private final BulletAppState physics;
private final Spatial turrentNode;
private float timeStack=0.0f;
/**
* An abstract Control that calls the auto-shooting (have a reassignable methods"controlUpdate(tpf)"
* @param rootNode
* @param assetManager
* @param physics
* @param player
* @param spaceTurrent
* @param turrentNode
*/
public SpaceTurrentAutoShoot(Node rootNode,AssetManager assetManager,BulletAppState physics,CharacterControl player, RigidBodyControl spaceTurrent,Spatial turrentNode) {
this.rootNode=rootNode;
this.assetManager=assetManager;
this.physics=physics;
this.player=player;
this.spaceTurrent=spaceTurrent;
this.turrentNode=turrentNode;
}
@Override
protected void controlUpdate(float tpf) {
if(spaceTurrent.getPhysicsLocation().distance(player.getPhysicsLocation()) <= 100){
//setting the warning for your spaceShip
GameApplication.dangertext.setText("Danger");
GameApplication.xpText.setText("Approaching Galactic Turrent : "+turrentNode.getName());
timeStack+=tpf;
if(timeStack >= 0.5f ){
/**
* Load Laser Guns starting from the NPC & pointing to the player with speed of 100f
*/
Load_LaserGun(new Sphere(10, 10, 0.2f),"man_smoke_1.png",spaceTurrent.getPhysicsLocation()
,Vector3f.ZERO,0.2f,0.15f,player.getPhysicsLocation().subtract(spaceTurrent.getPhysicsLocation()).normalize().mult(100f));
/**
* Rotate the NPC to face the player
*/
rotateNPCTOFacePlayer(player.getPhysicsLocation(),Vector3f.UNIT_Y);
/**
* create an auidoNode & attaches it to the rootNode
*/
new SoundEffects(assetManager, rootNode,"galacticGunShoots.wav", false).play();
/**
* Reset the coolDown time
*/
timeStack=0.0f;
}
}else{
/**
* Reset the rotation of the NPC
*/
rotateNPCTOFacePlayer(new Vector3f(0f,0f,0f),Vector3f.UNIT_Y);
}
}
public void Load_LaserGun(Mesh mesh,String Tex,Vector3f startingPosition,Vector3f gravity,float startSizeOfEffect,float endSizeOfEffect,
Vector3f directionOfShooting ) {
/** Create a Laser Gun geometry and attach to scene graph. new Box(0.01f, 0.03f, 0.01f)*/
Geometry laser_geo = new Geometry("Space Turrent Laser",mesh);
Material lasermat = new Material(assetManager, "Common/MatDefs/Misc/Unshaded.j3md");
Texture monkeyTex = assetManager.loadTexture("Textures/"+Tex);
lasermat.setTexture("ColorMap", monkeyTex);
laser_geo.setMaterial(lasermat);
Node LaserGunNode=new Node("Space Turrent Laser");
LaserGunNode.attachChild(laser_geo);
LaserGunNode.attachChild(effect(startSizeOfEffect, endSizeOfEffect, ColorRGBA.Red, ColorRGBA.Yellow));
/** Position Laser gun above the camera location by 1f & to the right by 0.008f & forward +0.2f */
// player.getPhysicsLocation().add(new Vector3f(1f,1f,0f))
LaserGunNode.setLocalTranslation(startingPosition);
/** Make the laser gun particles physical with a mass > 0.0f */
RigidBodyControl ball_phy = new RigidBodyControl(CollisionShapeFactory.createDynamicMeshShape(laser_geo),0.1f);
/** Add physical ball to physics space. */
LaserGunNode.addControl(ball_phy);
//add rock decay conrtol
LaserGunNode.addControl(new LaserGunDecayControl(GameApplication.player,physics));
physics.getPhysicsSpace().add(ball_phy);
/** setting the gravity of the shoots to zero in all directions x,y,z */
ball_phy.setGravity(gravity);
/** Accelerate the physcial ball to shoot it in the direction of camera "see Vector3f multiplications" */
ball_phy.setLinearVelocity(directionOfShooting);
/**attach the laser shoots to our node */
rootNode.attachChild(LaserGunNode);
}
/**
* Create a Particle EMitter
* @param startSize of emitter
* @param Endsize of emitter
* @param startColor of emitter
* @param endcolor of emitter
* @return ParticleEmitter
*/
public ParticleEmitter effect(float startSize,float Endsize,ColorRGBA startColor,ColorRGBA endcolor){
ParticleEmitter fireEffect = new ParticleEmitter("Emitter", ParticleMesh.Type.Triangle, 300);
Material fireMat = new Material(assetManager, "Common/MatDefs/Misc/Particle.j3md");
// fireMat.setTexture("Texture", assetManager.loadTexture("Textures/Fire.png"));
fireEffect.setMaterial(fireMat);
fireEffect.setImagesX(1);
fireEffect.setImagesY(1); // 2x2 texture animation
fireEffect.setEndColor(endcolor ); // red
fireEffect.setStartColor( startColor ); // yellow
fireEffect.getParticleInfluencer().setInitialVelocity(new Vector3f(0, 0, 0));
fireEffect.setStartSize(startSize);
fireEffect.setEndSize(Endsize);
fireEffect.setLowLife(0.5f);
fireEffect.setHighLife(1f);
fireEffect.getParticleInfluencer().setVelocityVariation(3f);
return fireEffect;
}
@Override
protected void controlRender(RenderManager rm, ViewPort vp) {
}
/**
* Turns the NPC physics viewDirection to face the player
* @param NPClookPosition Look direction vector
* @param upVector the Y-axis prependicular line
*/
private void rotateNPCTOFacePlayer(Vector3f NPClookPosition,Vector3f upVector) {
turrentNode.lookAt(NPClookPosition, upVector);
spaceTurrent.setPhysicsRotation(turrentNode.getLocalRotation());
}
}
[EDIT] :
