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- add first version of BetterCharacterControl, WIP

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TODO: damping of local x/z plane physics forces

git-svn-id: https://jmonkeyengine.googlecode.com/svn/trunk@10363 75d07b2b-3a1a-0410-a2c5-0572b91ccdca
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nor..67 2013-02-08 03:09:35 +00:00
parent 5e0fa6459c
commit 191c8290f6
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685
engine/src/bullet-common/com/jme3/bullet/control/BetterCharacterControl.java Normal file
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/*
* Copyright (c) 2009-2012 jMonkeyEngine
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* * Neither the name of 'jMonkeyEngine' nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.jme3.bullet.control;
import com.jme3.bullet.PhysicsSpace;
import com.jme3.bullet.PhysicsTickListener;
import com.jme3.bullet.collision.PhysicsRayTestResult;
import com.jme3.bullet.collision.shapes.CapsuleCollisionShape;
import com.jme3.bullet.collision.shapes.CollisionShape;
import com.jme3.bullet.collision.shapes.CompoundCollisionShape;
import com.jme3.bullet.debug.DebugTools;
import com.jme3.bullet.objects.PhysicsRigidBody;
import com.jme3.export.InputCapsule;
import com.jme3.export.JmeExporter;
import com.jme3.export.JmeImporter;
import com.jme3.export.OutputCapsule;
import com.jme3.math.FastMath;
import com.jme3.math.Quaternion;
import com.jme3.math.Vector3f;
import com.jme3.renderer.RenderManager;
import com.jme3.renderer.ViewPort;
import com.jme3.scene.Spatial;
import com.jme3.scene.control.Control;
import com.jme3.util.TempVars;
import java.io.IOException;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* This is intended to be a replacement for the internal bullet character class.
* A RigidBody with cylinder collision shape is used and its velocity is set
* continuously, a ray test is used to check if the character is on the ground.
*
* The character keeps his own local coordinate system which adapts based on the
* gravity working on the character so the character will always stand upright.
*
* Forces in the local x/z plane are dampened while those in the local y
* direction are applied fully (e.g. jumping, falling).
*
* @author normenhansen
*/
public class BetterCharacterControl extends AbstractPhysicsControl implements PhysicsTickListener {
protected static final Logger logger = Logger.getLogger(BetterCharacterControl.class.getName());
protected PhysicsRigidBody rigidBody;
protected float radius;
protected float height;
protected float mass;
protected float duckedFactor = 0.6f;
/**
* Local up direction, derived from gravity.
*/
protected final Vector3f localUp = new Vector3f(0, 1, 0);
/**
* Local absolute z-forward direction, derived from gravity and UNIT_Z,
* updated continuously when gravity changes.
*/
protected final Vector3f localForward = new Vector3f(0, 0, 1);
/**
* Local z-forward quaternion for the "local absolute" z-forward direction.
*/
protected final Quaternion localForwardRotation = new Quaternion(Quaternion.DIRECTION_Z);
/**
* Is a z-forward vector based on the view direction and the current local
* x/z plane.
*/
protected final Vector3f viewDirection = new Vector3f(0, 0, 1);
/**
* Stores final spatial location, corresponds to RigidBody location.
*/
protected final Vector3f location = new Vector3f();
/**
* Stores final spatial rotation, is a z-forward rotation based on the view
* direction and the current local x/z plane. See also rotatedViewDirection.
*/
protected final Quaternion rotation = new Quaternion(Quaternion.DIRECTION_Z);
protected final Vector3f rotatedViewDirection = new Vector3f(0, 0, 1);
protected final Vector3f walkDirection = new Vector3f();
protected final Vector3f jumpForce;
protected final Vector3f physicsDampening = new Vector3f(0.3f, 0, 0.3f);
protected final Vector3f scale = new Vector3f(1, 1, 1);
protected final Vector3f velocity = new Vector3f();
protected boolean jump = false;
protected boolean onGround = false;
protected boolean ducked = false;
protected boolean wantToUnDuck = false;
/**
* Only used for serialization, do not use this constructor.
*/
public BetterCharacterControl() {
jumpForce = new Vector3f();
}
/**
* Creates a new character with the given properties. Note that to avoid
* issues the final height when ducking should be larger than 2x radius. The
* jumpForce will be set to an upwards force of 5x mass.
*
* @param radius
* @param height
* @param mass
*/
public BetterCharacterControl(float radius, float height, float mass) {
this.radius = radius;
this.height = height;
this.mass = mass;
rigidBody = new PhysicsRigidBody(getShape(), mass);
jumpForce = new Vector3f(0, mass * 5, 0);
rigidBody.setAngularFactor(0);
}
@Override
public void update(float tpf) {
super.update(tpf);
rigidBody.getPhysicsLocation(location);
//rotation has been set through viewDirection
applyPhysicsTransform(location, rotation);
debugTools.setPinkArrow(location, localForward);
}
private DebugTools debugTools = null;
public void setDebugTools(DebugTools debugTools) {
this.debugTools = debugTools;
}
@Override
public void render(RenderManager rm, ViewPort vp) {
super.render(rm, vp);
debugTools.show(rm, vp);
}
/**
* Used internally, don't call manually
*
* @param space
* @param tpf
*/
public void prePhysicsTick(PhysicsSpace space, float tpf) {
checkOnGround();
if (wantToUnDuck && checkCanUnDuck()) {
setHeightPercent(1);
wantToUnDuck = false;
ducked = false;
}
//TODO: this damping (physicsInfluence) is not framerate decoupled
// Vector3f physicsPlane = localForwardRotation.mult(physicsDampening);
// Vector3f counter = velocity.mult(physicsPlane).negateLocal().multLocal(tpf * 100.0f);
// velocity.addLocal(counter);
// debugTools.setGreenArrow(location, counter);
debugTools.setBlueArrow(location, walkDirection);
float designatedVelocity = walkDirection.length();
if (designatedVelocity > 0) {
TempVars vars = TempVars.get();
Vector3f localWalkDirection = vars.vect1;
//normalize walkdirection
localWalkDirection.set(walkDirection).normalizeLocal();
//check for the existing velocity in the desired direction
float existingVelocity = velocity.dot(localWalkDirection);
//calculate the final velocity in the desired direction
float finalVelocity = designatedVelocity - existingVelocity;
localWalkDirection.multLocal(finalVelocity);
//add resulting vector to existing velocity
debugTools.setYellowArrow(location, localWalkDirection);
velocity.addLocal(localWalkDirection);
vars.release();
} else {
debugTools.setYellowArrow(location, Vector3f.ZERO);
}
rigidBody.setLinearVelocity(velocity);
if (jump) {
//TODO: precalculate jump force
TempVars vars = TempVars.get();
Vector3f rotatedJumpForce = vars.vect1;
rotatedJumpForce.set(jumpForce);
rigidBody.applyImpulse(localForwardRotation.multLocal(rotatedJumpForce), Vector3f.ZERO);
jump = false;
vars.release();
}
}
/**
* Used internally, don't call manually
*
* @param space
* @param tpf
*/
public void physicsTick(PhysicsSpace space, float tpf) {
rigidBody.getLinearVelocity(velocity);
debugTools.setRedArrow(location, velocity);
}
/**
* Move the character somewhere. Note the character also takes the location
* of any spatial its being attached to in the moment it is attached.
*
* @param vec The new character location.
*/
public void warp(Vector3f vec) {
setPhysicsLocation(vec);
}
/**
* Makes the character jump with the set jump force.
*/
public void jump() {
//TODO: debounce over some frames
if (!onGround) {
return;
}
jump = true;
}
/**
* Set the jump force as a Vector3f. The jump force is local to the
* characters coordinate system, which normally is always z-forward (in
* world coordinates, parent coordinates when set to applyLocalPhysics)
*
* @param jumpForce The new jump force
*/
public void setJumpForce(Vector3f jumpForce) {
this.jumpForce.set(jumpForce);
}
/**
* Gets the current jump force. The default is 5 * character mass in y
* direction.
*
* @return
*/
public Vector3f getJumpForce() {
return jumpForce;
}
/**
* Check if the character is on the ground. This is determined by a ray test
* in the center of the character and might return false even if the
* character is not falling yet.
*
* @return
*/
public boolean isOnGround() {
return onGround;
}
/**
* Toggle character ducking. When ducked the characters capsule collision
* shape height will be multiplied by duckedFactor to make the capsule
* smaller. When unducking, the character will check with a ray test if it
* can in fact unduck and only do so when its possible. You can check the
* state of the unducking by checking isDucked().
*
* @param enabled
*/
public void setDucked(boolean enabled) {
if (enabled) {
setHeightPercent(duckedFactor);
ducked = true;
wantToUnDuck = false;
} else {
if (checkCanUnDuck()) {
setHeightPercent(1);
ducked = false;
} else {
wantToUnDuck = true;
}
}
}
/**
* Check if the character is ducking, either due to user input or due to
* unducking being impossible at the moment (obstacle above).
*
* @return
*/
public boolean isDucked() {
return ducked;
}
/**
* Sets the height multiplication factor for ducking.
*
* @param factor The factor by which the height should be multiplied when
* ducking
*/
public void setDuckedFactor(float factor) {
duckedFactor = factor;
}
/**
* Gets the height multiplication factor for ducking.
*
* @return
*/
public float getDuckedFactor() {
return duckedFactor;
}
/**
* Sets the walk direction of the character. This parameter is framerate
* independent and the character will move continuously in the direction
* given by the vector with the speed given by the vector length in m/s.
*
* @param vec The movement direction and speed in m/s
*/
public void setWalkDirection(Vector3f vec) {
walkDirection.set(vec);
}
/**
* Gets the current walk direction and speed of the character. The length of
* the vector defines the speed.
*
* @return
*/
public Vector3f getWalkDirection() {
return walkDirection;
}
/**
* Sets the view direction for the character. Note this only defines the
* rotation of the spatial in the local x/z plane of the character.
*
* @param vec
*/
public void setViewDirection(Vector3f vec) {
viewDirection.set(vec);
updateLocalViewDirection();
}
/**
* Gets the current view direction, note this doesn't need to correspond
* with the spatials forward direction.
*
* @return
*/
public Vector3f getViewDirection() {
return viewDirection;
}
/**
* Realign the local forward vector to given direction vector, if null is
* supplied Vector3f.UNIT_Z is used. Input vector has to be perpendicular to
* current gravity vector. This normally only needs to be called when the
* gravity direction changed continuously and the local forward vector is
* off due to drift. E.g. after walking around on a sphere "planet" for a
* while and then going back to a y-up coordinate system the local z-forward
* might not be 100% alinged with Z axis.
*
* @param vec The new forward vector, has to be perpendicular to the current
* gravity vector!
*/
public void resetForward(Vector3f vec) {
localForward.set(vec);
updateLocalCoordinateSystem();
}
/**
* Get the current linear velocity along the three axes of the character.
* This is prepresented in world coordinates, parent coordinates when the
* control is set to applyLocalPhysics.
*
* @return The current linear velocity of the character
*/
public Vector3f getVelocity() {
return velocity;
}
/**
* Set the gravity for this character. Note that this also realigns the
* local coordinate system of the character so that continuous changes in
* gravity direction are possible while maintaining a sensible control over
* the character.
*
* @param gravity
*/
public void setGravity(Vector3f gravity) {
rigidBody.setGravity(gravity);
localUp.set(gravity).normalizeLocal().negateLocal();
updateLocalCoordinateSystem();
}
/**
* Get the current gravity of the character.
*
* @return
*/
public Vector3f getGravity() {
return rigidBody.getGravity();
}
/**
* Get the current gravity of the character.
*
* @param store The vector to store the result in
* @return
*/
public Vector3f getGravity(Vector3f store) {
return rigidBody.getGravity(store);
}
/**
* This actually sets a new collision shape to the character to change the
* height of the capsule.
*
* @param percent
*/
protected void setHeightPercent(float percent) {
scale.setY(percent);
rigidBody.setCollisionShape(getShape());
}
/**
* This checks if the character is on the ground by doing a ray test.
*/
protected void checkOnGround() {
TempVars vars = TempVars.get();
Vector3f location = vars.vect1;
Vector3f rayVector = vars.vect2;
float height = getFinalHeight();
location.set(localUp).multLocal(height).addLocal(this.location);
rayVector.set(localUp).multLocal(-height - FastMath.ZERO_TOLERANCE).addLocal(location);
debugTools.setMagentaArrow(location, rayVector.subtract(location));
List<PhysicsRayTestResult> results = space.rayTest(location, rayVector);
vars.release();
for (PhysicsRayTestResult physicsRayTestResult : results) {
if (!physicsRayTestResult.getCollisionObject().equals(rigidBody)) {
onGround = true;
return;
}
}
onGround = false;
}
/**
* This checks if the character can go from ducked to unducked state by
* doing a ray test.
*/
protected boolean checkCanUnDuck() {
TempVars vars = TempVars.get();
Vector3f location = vars.vect1;
Vector3f rayVector = vars.vect2;
location.set(localUp).multLocal(FastMath.ZERO_TOLERANCE).addLocal(this.location);
rayVector.set(localUp).multLocal(height + FastMath.ZERO_TOLERANCE).addLocal(location);
debugTools.setMagentaArrow(location, rayVector.subtract(location));
List<PhysicsRayTestResult> results = space.rayTest(location, rayVector);
vars.release();
for (PhysicsRayTestResult physicsRayTestResult : results) {
if (!physicsRayTestResult.getCollisionObject().equals(rigidBody)) {
return false;
}
}
debugTools.setMagentaArrow(location, Vector3f.ZERO);
return true;
}
/**
* Gets a new collision shape based on the current scale parameter. The
* created collisionshape is a capsule collision shape that is attached to a
* compound collision shape with an offset to set the object center at the
* bottom of the capsule.
*
* @return
*/
protected CollisionShape getShape() {
//TODO: cleanup size mess..
CapsuleCollisionShape capsuleCollisionShape = new CapsuleCollisionShape(getFinalRadius(), (getFinalHeight() - (2 * getFinalRadius())));
CompoundCollisionShape compoundCollisionShape = new CompoundCollisionShape();
Vector3f addLocation = new Vector3f(0, (getFinalHeight() / 2.0f), 0);
compoundCollisionShape.addChildShape(capsuleCollisionShape, addLocation);
return compoundCollisionShape;
}
/**
* Gets the scaled height.
*
* @return
*/
protected float getFinalHeight() {
return height * scale.getY();
}
/**
* Gets the scaled radius.
*
* @return
*/
protected float getFinalRadius() {
return radius * scale.getZ();
}
/**
* Updates the local coordinate system from the localForward and localUp
* vectors, adapts localForward, sets localForwardRotation quaternion to
* local z-forward rotation.
*/
protected void updateLocalCoordinateSystem() {
//gravity vector has possibly changed, calculate new world forward (UNIT_Z)
calculateNewForward(localForwardRotation, localForward, localUp);
rigidBody.setPhysicsRotation(localForwardRotation);
updateLocalViewDirection();
}
/**
* Updates the local x/z-flattened view direction and the corresponding
* rotation quaternion for the spatial.
*/
protected void updateLocalViewDirection() {
//update local rotation quaternion to use for view rotation
localForwardRotation.multLocal(rotatedViewDirection.set(viewDirection));
calculateNewForward(rotation, rotatedViewDirection, localUp);
}
/**
* This method works similar to Camera.lookAt but where lookAt sets the
* priority on the direction, this method sets the priority on the up vector
* so that the result direction vector and rotation is guaranteed to be
* perpendicular to the up vector.
*
* @param rotation The rotation to set the result on or null to create a new
* Quaternion, this will be set to the new "z-forward" rotation if not null
* @param direction The direction to base the new look direction on, will be
* set to the new direction
* @param worldUpVector The up vector to use, the result direction will be
* perpendicular to this
* @return
*/
protected final void calculateNewForward(Quaternion rotation, Vector3f direction, Vector3f worldUpVector) {
if (direction == null) {
return;
}
TempVars vars = TempVars.get();
Vector3f newLeft = vars.vect1;
Vector3f newLeftNegate = vars.vect2;
newLeft.set(worldUpVector).crossLocal(direction).normalizeLocal();
if (newLeft.equals(Vector3f.ZERO)) {
if (direction.x != 0) {
newLeft.set(direction.y, -direction.x, 0f).normalizeLocal();
} else {
newLeft.set(0f, direction.z, -direction.y).normalizeLocal();
}
logger.log(Level.INFO, "Zero left for direction {0}, up {1}", new Object[]{direction, worldUpVector});
}
newLeftNegate.set(newLeft).negateLocal();
direction.set(worldUpVector).crossLocal(newLeftNegate).normalizeLocal();
if (direction.equals(Vector3f.ZERO)) {
direction.set(Vector3f.UNIT_Z);
logger.log(Level.INFO, "Zero left for left {0}, up {1}", new Object[]{newLeft, worldUpVector});
}
if (rotation != null) {
rotation.fromAxes(newLeft, worldUpVector, direction);
}
vars.release();
}
/**
* This is implemented from AbstractPhysicsControl and called when the
* spatial is attached for example.
*
* @param vec
*/
@Override
protected void setPhysicsLocation(Vector3f vec) {
rigidBody.setPhysicsLocation(vec);
location.set(vec);
}
/**
* We set the current spatial as UserObject so the user can find his
* spatial.
*
* @param spatial
*/
@Override
public void setSpatial(Spatial spatial) {
super.setSpatial(spatial);
rigidBody.setUserObject(spatial);
}
/**
* This is implemented from AbstractPhysicsControl and called when the
* spatial is attached for example. We don't set the actual physics rotation
* but the view rotation here. It might actually be altered by the
* calculateNewForward method.
*
* @param quat
*/
@Override
protected void setPhysicsRotation(Quaternion quat) {
rotation.set(quat);
rotation.multLocal(rotatedViewDirection.set(viewDirection));
updateLocalViewDirection();
}
/**
* This is implemented from AbstractPhysicsControl and called when the
* control is supposed to add all objects to the physics space.
*
* @param space
*/
@Override
protected void addPhysics(PhysicsSpace space) {
space.getGravity(localUp).normalizeLocal().negateLocal();
updateLocalCoordinateSystem();
space.addCollisionObject(rigidBody);
space.addTickListener(this);
}
/**
* This is implemented from AbstractPhysicsControl and called when the
* control is supposed to remove all objects from the physics space.
*
* @param space
*/
@Override
protected void removePhysics(PhysicsSpace space) {
space.removeCollisionObject(rigidBody);
space.removeTickListener(this);
}
public Control cloneForSpatial(Spatial spatial) {
BetterCharacterControl control = new BetterCharacterControl(radius, height, mass);
control.setJumpForce(jumpForce);
control.setSpatial(spatial);
return control;
}
@Override
public void write(JmeExporter ex) throws IOException {
super.write(ex);
OutputCapsule oc = ex.getCapsule(this);
oc.write(radius, "radius", 1);
oc.write(height, "height", 1);
oc.write(mass, "mass", 1);
oc.write(jumpForce, "jumpForce", new Vector3f(0, mass * 5, 0));
}
@Override
public void read(JmeImporter im) throws IOException {
super.read(im);
InputCapsule in = im.getCapsule(this);
this.radius = in.readFloat("radius", 1);
this.height = in.readFloat("height", 2);
this.mass = in.readFloat("mass", 80);
this.jumpForce.set((Vector3f) in.readSavable("jumpForce", new Vector3f(0, mass * 5, 0)));
rigidBody = new PhysicsRigidBody(getShape(), mass);
jumpForce.set(new Vector3f(0, mass * 5, 0));
rigidBody.setAngularFactor(0);
}
}

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engine/src/test/jme3test/bullet/TestBetterCharacter.java Normal file
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/*
* Copyright (c) 2009-2012 jMonkeyEngine All rights reserved. <p/>
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer. <p/> * Redistributions
* in binary form must reproduce the above copyright notice, this list of
* conditions and the following disclaimer in the documentation and/or other
* materials provided with the distribution. <p/> * Neither the name of
* 'jMonkeyEngine' nor the names of its contributors may be used to endorse or
* promote products derived from this software without specific prior written
* permission. <p/> THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT
* NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package jme3test.bullet;
import com.jme3.app.SimpleApplication;
import com.jme3.bullet.BulletAppState;
import com.jme3.bullet.PhysicsSpace;
import com.jme3.bullet.collision.shapes.MeshCollisionShape;
import com.jme3.bullet.control.BetterCharacterControl;
import com.jme3.bullet.control.RigidBodyControl;
import com.jme3.bullet.debug.DebugTools;
import com.jme3.input.KeyInput;
import com.jme3.input.controls.ActionListener;
import com.jme3.input.controls.KeyTrigger;
import com.jme3.material.Material;
import com.jme3.math.FastMath;
import com.jme3.math.Quaternion;
import com.jme3.math.Vector3f;
import com.jme3.renderer.RenderManager;
import com.jme3.scene.CameraNode;
import com.jme3.scene.Geometry;
import com.jme3.scene.Node;
import com.jme3.scene.control.CameraControl.ControlDirection;
import com.jme3.scene.shape.Sphere;
import com.jme3.system.AppSettings;
/**
* A walking physical character followed by a 3rd person camera. (No animation.)
*
* @author normenhansen, zathras
*/
public class TestBetterCharacter extends SimpleApplication implements ActionListener {
private BulletAppState bulletAppState;
private BetterCharacterControl physicsCharacter;
private Node characterNode;
private CameraNode camNode;
boolean rotate = false;
private Vector3f walkDirection = new Vector3f(0, 0, 0);
private Vector3f viewDirection = new Vector3f(0, 0, 1);
boolean leftStrafe = false, rightStrafe = false, forward = false, backward = false,
leftRotate = false, rightRotate = false;
private Vector3f normalGravity = new Vector3f(0, -9.81f, 0);
private Geometry planet;
public static void main(String[] args) {
TestBetterCharacter app = new TestBetterCharacter();
AppSettings settings = new AppSettings(true);
settings.setRenderer(AppSettings.LWJGL_OPENGL2);
settings.setAudioRenderer(AppSettings.LWJGL_OPENAL);
app.setSettings(settings);
app.start();
}
@Override
public void simpleInitApp() {
//setup keyboard mapping
setupKeys();
// activate physics
bulletAppState = new BulletAppState();
stateManager.attach(bulletAppState);
bulletAppState.setDebugEnabled(true);
// init a physics test scene
PhysicsTestHelper.createPhysicsTestWorldSoccer(rootNode, assetManager, bulletAppState.getPhysicsSpace());
PhysicsTestHelper.createBallShooter(this, rootNode, bulletAppState.getPhysicsSpace());
setupPlanet();
// Create a node for the character model
characterNode = new Node("character node");
characterNode.setLocalTranslation(new Vector3f(4, 5, 2));
// Add a character control to the node so we can add other things and
// control the model rotation
physicsCharacter = new BetterCharacterControl(0.3f, 2.5f, 8f);
physicsCharacter.setDebugTools(new DebugTools(assetManager));
characterNode.addControl(physicsCharacter);
getPhysicsSpace().add(physicsCharacter);
// Load model, attach to character node
Node model = (Node) assetManager.loadModel("Models/Jaime/Jaime.j3o");
model.setLocalScale(1.50f);
characterNode.attachChild(model);
// Add character node to the rootNode
rootNode.attachChild(characterNode);
// Set forward camera node that follows the character, only used when
// view is "locked"
camNode = new CameraNode("CamNode", cam);
camNode.setControlDir(ControlDirection.SpatialToCamera);
camNode.setLocalTranslation(new Vector3f(0, 2, -6));
Quaternion quat = new Quaternion();
// These coordinates are local, the camNode is attached to the character node!
quat.lookAt(Vector3f.UNIT_Z, Vector3f.UNIT_Y);
camNode.setLocalRotation(quat);
characterNode.attachChild(camNode);
// Disable by default, can be enabled via keyboard shortcut
camNode.setEnabled(false);
}
@Override
public void simpleUpdate(float tpf) {
// Apply planet gravity to character if close enough (see below)
checkPlanetGravity();
// Get current forward and left vectors of model by using its rotation
// to rotate the unit vectors
Vector3f modelForwardDir = characterNode.getWorldRotation().mult(Vector3f.UNIT_Z);
Vector3f modelLeftDir = characterNode.getWorldRotation().mult(Vector3f.UNIT_X);
// WalkDirection is global!
// You *can* make your character fly with this.
walkDirection.set(0, 0, 0);
if (leftStrafe) {
walkDirection.addLocal(modelLeftDir.mult(3));
} else if (rightStrafe) {
walkDirection.addLocal(modelLeftDir.negate().multLocal(3));
}
if (forward) {
walkDirection.addLocal(modelForwardDir.mult(3));
} else if (backward) {
walkDirection.addLocal(modelForwardDir.negate().multLocal(3));
}
physicsCharacter.setWalkDirection(walkDirection);
// ViewDirection is local to characters physics system!
// The final world rotation depends on the gravity and on the state of
// setApplyPhysicsLocal()
if (leftRotate) {
Quaternion rotateL = new Quaternion().fromAngleAxis(FastMath.PI * tpf, Vector3f.UNIT_Y);
rotateL.multLocal(viewDirection);
} else if (rightRotate) {
Quaternion rotateR = new Quaternion().fromAngleAxis(-FastMath.PI * tpf, Vector3f.UNIT_Y);
rotateR.multLocal(viewDirection);
}
physicsCharacter.setViewDirection(viewDirection);
fpsText.setText("Touch da ground = " + physicsCharacter.isOnGround());
if (!lockView) {
cam.lookAt(characterNode.getWorldTranslation().add(new Vector3f(0, 2, 0)), Vector3f.UNIT_Y);
}
}
private void setupPlanet() {
Material material = new Material(assetManager, "Common/MatDefs/Misc/Unshaded.j3md");
material.setTexture("ColorMap", assetManager.loadTexture("Interface/Logo/Monkey.jpg"));
//immovable sphere with mesh collision shape
Sphere sphere = new Sphere(64, 64, 20);
planet = new Geometry("Sphere", sphere);
planet.setMaterial(material);
planet.setLocalTranslation(30, -15, 30);
planet.addControl(new RigidBodyControl(new MeshCollisionShape(sphere), 0));
rootNode.attachChild(planet);
getPhysicsSpace().add(planet);
}
private void checkPlanetGravity() {
Vector3f planetDist = planet.getWorldTranslation().subtract(characterNode.getWorldTranslation());
if (planetDist.length() < 24) {
physicsCharacter.setGravity(planetDist.normalizeLocal().multLocal(9.81f));
} else {
physicsCharacter.setGravity(normalGravity);
}
}
private PhysicsSpace getPhysicsSpace() {
return bulletAppState.getPhysicsSpace();
}
public void onAction(String binding, boolean value, float tpf) {
if (binding.equals("Strafe Left")) {
if (value) {
leftStrafe = true;
} else {
leftStrafe = false;
}
} else if (binding.equals("Strafe Right")) {
if (value) {
rightStrafe = true;
} else {
rightStrafe = false;
}
} else if (binding.equals("Rotate Left")) {
if (value) {
leftRotate = true;
} else {
leftRotate = false;
}
} else if (binding.equals("Rotate Right")) {
if (value) {
rightRotate = true;
} else {
rightRotate = false;
}
} else if (binding.equals("Walk Forward")) {
if (value) {
forward = true;
} else {
forward = false;
}
} else if (binding.equals("Walk Backward")) {
if (value) {
backward = true;
} else {
backward = false;
}
} else if (binding.equals("Jump")) {
physicsCharacter.jump();
} else if (binding.equals("Duck")) {
if (value) {
physicsCharacter.setDucked(true);
} else {
physicsCharacter.setDucked(false);
}
} else if (binding.equals("Lock View")) {
if (value && lockView) {
lockView = false;
} else if (value && !lockView) {
lockView = true;
}
flyCam.setEnabled(!lockView);
camNode.setEnabled(lockView);
}
}
private boolean lockView = false;
private void setupKeys() {
inputManager.addMapping("Strafe Left",
new KeyTrigger(KeyInput.KEY_U),
new KeyTrigger(KeyInput.KEY_Z));
inputManager.addMapping("Strafe Right",
new KeyTrigger(KeyInput.KEY_O),
new KeyTrigger(KeyInput.KEY_X));
inputManager.addMapping("Rotate Left",
new KeyTrigger(KeyInput.KEY_J),
new KeyTrigger(KeyInput.KEY_LEFT));
inputManager.addMapping("Rotate Right",
new KeyTrigger(KeyInput.KEY_L),
new KeyTrigger(KeyInput.KEY_RIGHT));
inputManager.addMapping("Walk Forward",
new KeyTrigger(KeyInput.KEY_I),
new KeyTrigger(KeyInput.KEY_UP));
inputManager.addMapping("Walk Backward",
new KeyTrigger(KeyInput.KEY_K),
new KeyTrigger(KeyInput.KEY_DOWN));
inputManager.addMapping("Jump",
new KeyTrigger(KeyInput.KEY_F),
new KeyTrigger(KeyInput.KEY_SPACE));
inputManager.addMapping("Duck",
new KeyTrigger(KeyInput.KEY_G),
new KeyTrigger(KeyInput.KEY_LSHIFT),
new KeyTrigger(KeyInput.KEY_RSHIFT));
inputManager.addMapping("Lock View",
new KeyTrigger(KeyInput.KEY_RETURN));
inputManager.addListener(this, "Strafe Left", "Strafe Right");
inputManager.addListener(this, "Rotate Left", "Rotate Right");
inputManager.addListener(this, "Walk Forward", "Walk Backward");
inputManager.addListener(this, "Jump", "Duck", "Lock View");
}
@Override
public void simpleRender(RenderManager rm) {
}
}