Ok, i found the my issue. The camera update is only happening while the object is being moved.
If I pull all the code from the ChaseCamera update proc and put into a new one like the following code. I can get the camera to move behind the object while not moving if I execute the new proc in the main update of my GameState. I will just need to flag when the user is moving the mouse. Currently its a bit messy and does not move well when the mouselook is being used.
Making the ChaseCamera:
public void buildChaseCamera()
{
HashMap props = new HashMap();
props.put(ChaseCamera.PROP_MAXDISTANCE, "10");
props.put(ChaseCamera.PROP_MINDISTANCE, "2");
props.put(ChaseCamera.PROP_DAMPINGK, "12");
props.put(ChaseCamera.PROP_SPRINGK, "36");
props.put(ThirdPersonMouseLook.PROP_LOCKASCENT, "false");
props.put(ThirdPersonMouseLook.PROP_ENABLED, "true");
props.put(ThirdPersonMouseLook.PROP_MOUSEBUTTON_FOR_LOOKING, "1");
chaser = new ChaseCamera(cam, player, props);
chaser.setStayBehindTarget(true);
chaser.setLooking(false);
chaser.setMaintainAzimuth(false);
chaser.setForceAzimuthUpdate(true);
chaser.setEnableSpring(true);
}
New Proc: (a little sloppy but i plan to clean up after some sleep)
public void doMoveCamTest(float time)
{
//init flags
boolean stayBehindTarget = true;
boolean looking = false;
boolean maintainAzimuth = false;
boolean forceAzimuthUpdate = true;
boolean enableSpring = true;
//init vars
float dampingK = 12f;
float springK = 36f;
float maxDistance = 10f;
float minDistance = 2f;
//init 3d vars
Vector3f camPos = cam.getLocation();
Vector3f idealPosition = new Vector3f();
Vector3f targetPos = new Vector3f();
Vector3f targetOffset = new Vector3f();
Vector3f compVect = new Vector3f();
Vector3f DEFAULT_WORLDUPVECTOR = new Vector3f(Vector3f.UNIT_Y);
Vector3f worldUpVec = new Vector3f(DEFAULT_WORLDUPVECTOR);
Vector3f velocity = new Vector3f();
Vector3f idealSphereCoords = null;
//setup mouse values
ThirdPersonMouseLook mouseLook = chaser.getMouseLook();
RelativeMouse mouse = new RelativeMouse("Mouse Input"); //need to find a way to remove this
mouse.registerWithInputHandler(chaser); //need to find a way to remove this
//flag if the user is looking around
looking = mouseLook.isEnabled();
// updateTargetPosition(Vector3f camPos)
targetPos.set(player.getWorldTranslation());
if (!Vector3f.isValidVector(camPos)) {
camPos.set(targetPos);
}
if (!Vector3f.isValidVector(camPos) || !Vector3f.isValidVector(targetPos))
return;
targetPos.addLocal(targetOffset);
// back to update proc
if (!Vector3f.isValidVector(camPos) || !Vector3f.isValidVector(targetPos))
System.out.println("not a valid vector.");
// updateIdealAzimuth(time, camPos)
if (idealSphereCoords == null)
idealSphereCoords = new Vector3f((mouseLook.getMaxRollOut()-mouseLook.getMinRollOut()) / 2f, 0, mouseLook.getMaxAscent() * .5f);
// update camera's ideal azimuth
if (maintainAzimuth && !forceAzimuthUpdate) {
; // no need to compute azimuth
} else {
float offX, offZ;
if (stayBehindTarget && !looking) {
// set y to be opposite target facing dir.
Vector3f rot = compVect;
player.getLocalRotation().getRotationColumn(2, rot);
rot.negateLocal();
offX = rot.x;
offZ = rot.z;
if (worldUpVec.z == 1) {
offZ = rot.y;
}
} else {
forceAzimuthUpdate = false;
offX = (camPos.x - targetPos.x);
offZ = (camPos.z - targetPos.z);
if (worldUpVec.z == 1) {
offZ = (camPos.y - targetPos.y);
}
}
idealSphereCoords.y = FastMath.atan2(offZ, offX);
}
//convertIdealSphereToCartesian()
if (worldUpVec.y == 1) {
// determine ideal position in cartesian space
FastMath.sphericalToCartesian(idealSphereCoords, idealPosition).addLocal(targetPos);
} else if (worldUpVec.z == 1){
// determine ideal position in cartesian space
FastMath.sphericalToCartesianZ(idealSphereCoords, idealPosition).addLocal(targetPos);
}
//updateCameraPosition(float time, Vector3f camPos)
if (!enableSpring) {
// ignore springs and just set to targeted "ideal" position.
camPos.set(idealPosition);
} else {
// Determine displacement from current to ideal position
// Use the spring constants to accelerate towards the ideal position
Vector3f displace = compVect;
camPos.subtract(idealPosition, displace);
displace.multLocal(-springK).subtractLocal(velocity.x * dampingK,
velocity.y * dampingK, velocity.z * dampingK);
velocity.addLocal(displace.multLocal(time));
if (!Vector3f.isValidVector(velocity)) velocity.zero();
camPos.addLocal(velocity.x * time, velocity.y * time, velocity.z
* time);
}
//enforceMinMaxDistance(camPos)
if (maxDistance > 0 || minDistance > 0) {
float dist = camPos.distance(targetPos);
if (dist > maxDistance || dist < minDistance) {
// Move camera position along direction vector until distance is satisfied.
Vector3f dir = targetPos.subtract(camPos, compVect);
dir.normalizeLocal();
if (dist > maxDistance) {
dir.multLocal(maxDistance-dist);
camPos.subtractLocal(dir);
} else if (dist < minDistance) {
dir.multLocal(dist-minDistance);
camPos.addLocal(dir);
}
}
}
// Look at our target
cam.lookAt(targetPos, worldUpVec);
if (maintainAzimuth)
cam.update();
}
MyGameState.update()
public void update(float tpf) {
if (pause)
return;
// Update the InputHandler
input.update(tpf);
//update the chase camera to handle the player moving around.
if (chaser != null)
chaser.update(tpf);
//We don't want the chase camera to go below the world, so always keep
//it 2 units above the level.
if(cam.getLocation().y < (terrain.getHeight(cam.getLocation())+2))
{
cam.getLocation().y = terrain.getHeight(cam.getLocation()) + 2;
cam.update();
}
//make sure the player is not below the world
float characterMinHeight = terrain.getHeight(player.getLocalTranslation())+((BoundingBox)player.getWorldBound()).yExtent;
if (!Float.isInfinite(characterMinHeight) && !Float.isNaN(characterMinHeight))
{
player.getLocalTranslation().y = characterMinHeight;
}
player.getLocalTranslation().y += .25;
//make the camera moves behind the player
doMoveCamTest(tpf);
// Update the geometric state of the rootNode
rootNode.updateGeometricState(tpf, true);
}
Ok, time to crash. Coffee and Soda is depleted.
What I was trying to say was, that the chase camera takes too long to reach its final position behind the target. Is there a way to speed this up or to even configure the speed exactly?