My favorites | Sign in
Project Home Downloads Wiki Issues Source
Checkout   Browse   Changes    
 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
/*
* Copyright (c) 2009-2011 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.monkeyzone.controls;

import com.jme3.bullet.PhysicsSpace;
import com.jme3.bullet.PhysicsTickListener;
import com.jme3.bullet.control.VehicleControl;
import com.jme3.math.FastMath;
import com.jme3.math.Vector3f;
import com.jme3.network.Client;
import com.jme3.renderer.RenderManager;
import com.jme3.renderer.ViewPort;
import com.jme3.scene.Spatial;

/**
* Manual vehicle control, implements ManualControl interface and controls
* a vehicle if available on the Spatial.
* @author normenhansen
*/
public class ManualVehicleControl extends NetworkedManualControl implements PhysicsTickListener {

private Spatial spatial;
private VehicleControl control;
private float speed = 800f;
private float steer = 0;
private float accelerate = 0;
private Vector3f tempVec1 = new Vector3f();
private Vector3f tempVec2 = new Vector3f();
private Vector3f tempVec3 = new Vector3f();
private boolean hover = false;
private boolean added = false;

public ManualVehicleControl() {
}

public ManualVehicleControl(Client client, long entityId) {
super(client, entityId);
}

@Override
public void doSteerX(float amount) {
}

@Override
public void doSteerY(float amount) {
}

@Override
public void doMoveX(float amount) {
if (!hover) {
steer = amount * FastMath.QUARTER_PI * 0.5f;
} else {
steer = amount;
}
}

@Override
public void doMoveY(float amount) {
}

@Override
public void doMoveZ(float amount) {
accelerate = amount * speed;
}

@Override
public void doPerformAction(int button, boolean pressed) {
}

public Vector3f getAimDirection() {
return control.getForwardVector(tempVec1);
}

public Vector3f getLocation() {
return control.getPhysicsLocation(tempVec2);
}

@Override
public void setSpatial(Spatial spatial) {
this.spatial = spatial;
if (spatial == null) {
if (added) {
control.getPhysicsSpace().removeTickListener(this);
}
return;
}
this.control = spatial.getControl(VehicleControl.class);
if (this.control == null) {
throw new IllegalStateException("Cannot add ManualCharacterControl to Spatial without CharacterControl");
}
Float spatialSpeed = (Float) spatial.getUserData("Speed");
if (spatialSpeed != null) {
speed = spatialSpeed;
}
Integer hoverControl = (Integer) spatial.getUserData("HoverControl");
if (hoverControl != null && hoverControl == 1) {
hover = true;
}
}

@Override
public void setEnabled(boolean enabled) {
this.enabled = enabled;
}

@Override
public boolean isEnabled() {
return enabled;
}

@Override
public void update(float tpf) {
if (!enabled) {
return;
}
if (hover) {
if (!added) {
control.getPhysicsSpace().addTickListener(this);
added = true;
}
return;
}
control.accelerate(accelerate);
control.steer(steer);
}

public void prePhysicsTick(PhysicsSpace space, float f) {
if (!enabled || !hover) {
return;
}
Vector3f angVel = control.getAngularVelocity();
float rotationVelocity = angVel.getY();
Vector3f dir = control.getForwardVector(tempVec2).multLocal(1, 0, 1).normalizeLocal();
control.getLinearVelocity(tempVec3);
Vector3f linearVelocity = tempVec3.multLocal(1, 0, 1);

if (steer != 0) {
if (rotationVelocity < 1 && rotationVelocity > -1) {
control.applyTorque(tempVec1.set(0, steer * control.getMass() * 20, 0));
}
} else {
// counter the steering value!
if (rotationVelocity > 0.2f) {
control.applyTorque(tempVec1.set(0, -control.getMass() * 20, 0));
} else if (rotationVelocity < -0.2f) {
control.applyTorque(tempVec1.set(0, control.getMass() * 20, 0));
}
}
if (accelerate > 0) {
// counter force that will adjust velocity
// if we are not going where we want to go.
// this will prevent "drifting" and thus improve control
// of the vehicle
float d = dir.dot(linearVelocity.normalize());
Vector3f counter = dir.project(linearVelocity).normalizeLocal().negateLocal().multLocal(1 - d);
control.applyForce(counter.multLocal(control.getMass() * 10), Vector3f.ZERO);

if (linearVelocity.length() < 30) {
control.applyForce(dir.multLocal(accelerate), Vector3f.ZERO);
}
} else {
// counter the acceleration value
if (linearVelocity.length() > FastMath.ZERO_TOLERANCE) {
linearVelocity.normalizeLocal().negateLocal();
control.applyForce(linearVelocity.mult(control.getMass() * 10), Vector3f.ZERO);
}
}
}

public void physicsTick(PhysicsSpace space, float f) {
}

public void render(RenderManager rm, ViewPort vp) {
}
}

Change log

r103 by normen667 on Mar 18, 2011   Diff
- Move to new SpiderMonkey API
Go to: 
Project members, sign in to write a code review

Older revisions

r77 by normen667 on Feb 14, 2011   Diff
- add support for hovering vehicles
- make HoverTank hover
r69 by normen667 on Feb 13, 2011   Diff
- first person camera
r53 by normen667 on Feb 6, 2011   Diff
- rotate with camera, first try
All revisions of this file

File info

Size: 6889 bytes, 204 lines
Powered by Google Project Hosting