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1/*
2 * Copyright (c) Contributors, http://opensimulator.org/
3 * See CONTRIBUTORS.TXT for a full list of copyright holders.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 * * Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * * Neither the name of the OpenSimulator Project nor the
13 * names of its contributors may be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
20 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
23 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
25 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28/* RA: June 14, 2011. Copied from ODEDynamics.cs and converted to
29 * call the BulletSim system.
30 */
31/* Revised Aug, Sept 2009 by Kitto Flora. ODEDynamics.cs replaces
32 * ODEVehicleSettings.cs. It and ODEPrim.cs are re-organised:
33 * ODEPrim.cs contains methods dealing with Prim editing, Prim
34 * characteristics and Kinetic motion.
35 * ODEDynamics.cs contains methods dealing with Prim Physical motion
36 * (dynamics) and the associated settings. Old Linear and angular
37 * motors for dynamic motion have been replace with MoveLinear()
38 * and MoveAngular(); 'Physical' is used only to switch ODE dynamic
39 * simualtion on/off; VEHICAL_TYPE_NONE/VEHICAL_TYPE_<other> is to
40 * switch between 'VEHICLE' parameter use and general dynamics
41 * settings use.
42 */
43
44using System;
45using System.Collections.Generic;
46using System.Reflection;
47using System.Runtime.InteropServices;
48using log4net;
49using OpenMetaverse;
50using OpenSim.Framework;
51using OpenSim.Region.Physics.Manager;
52
53namespace OpenSim.Region.Physics.BulletSPlugin
54{
55 public class BSDynamics
56 {
57 private int frcount = 0; // Used to limit dynamics debug output to
58 // every 100th frame
59
60 // private BSScene m_parentScene = null;
61 private BSPrim m_prim; // the prim this dynamic controller belongs to
62
63 // Vehicle properties
64 private Vehicle m_type = Vehicle.TYPE_NONE; // If a 'VEHICLE', and what kind
65 public Vehicle Type
66 {
67 get { return m_type; }
68 }
69 // private Quaternion m_referenceFrame = Quaternion.Identity; // Axis modifier
70 private VehicleFlag m_flags = (VehicleFlag) 0; // Boolean settings:
71 // HOVER_TERRAIN_ONLY
72 // HOVER_GLOBAL_HEIGHT
73 // NO_DEFLECTION_UP
74 // HOVER_WATER_ONLY
75 // HOVER_UP_ONLY
76 // LIMIT_MOTOR_UP
77 // LIMIT_ROLL_ONLY
78 private VehicleFlag m_Hoverflags = (VehicleFlag)0;
79 private Vector3 m_BlockingEndPoint = Vector3.Zero;
80 private Quaternion m_RollreferenceFrame = Quaternion.Identity;
81 // Linear properties
82 private Vector3 m_linearMotorDirection = Vector3.Zero; // velocity requested by LSL, decayed by time
83 private Vector3 m_linearMotorDirectionLASTSET = Vector3.Zero; // velocity requested by LSL
84 private Vector3 m_dir = Vector3.Zero; // velocity applied to body
85 private Vector3 m_linearFrictionTimescale = Vector3.Zero;
86 private float m_linearMotorDecayTimescale = 0;
87 private float m_linearMotorTimescale = 0;
88 private Vector3 m_lastLinearVelocityVector = Vector3.Zero;
89 private Vector3 m_lastPositionVector = Vector3.Zero;
90 // private bool m_LinearMotorSetLastFrame = false;
91 // private Vector3 m_linearMotorOffset = Vector3.Zero;
92
93 //Angular properties
94 private Vector3 m_angularMotorDirection = Vector3.Zero; // angular velocity requested by LSL motor
95 private int m_angularMotorApply = 0; // application frame counter
96 private Vector3 m_angularMotorVelocity = Vector3.Zero; // current angular motor velocity
97 private float m_angularMotorTimescale = 0; // motor angular velocity ramp up rate
98 private float m_angularMotorDecayTimescale = 0; // motor angular velocity decay rate
99 private Vector3 m_angularFrictionTimescale = Vector3.Zero; // body angular velocity decay rate
100 private Vector3 m_lastAngularVelocity = Vector3.Zero; // what was last applied to body
101 // private Vector3 m_lastVertAttractor = Vector3.Zero; // what VA was last applied to body
102
103 //Deflection properties
104 // private float m_angularDeflectionEfficiency = 0;
105 // private float m_angularDeflectionTimescale = 0;
106 // private float m_linearDeflectionEfficiency = 0;
107 // private float m_linearDeflectionTimescale = 0;
108
109 //Banking properties
110 // private float m_bankingEfficiency = 0;
111 // private float m_bankingMix = 0;
112 // private float m_bankingTimescale = 0;
113
114 //Hover and Buoyancy properties
115 private float m_VhoverHeight = 0f;
116// private float m_VhoverEfficiency = 0f;
117 private float m_VhoverTimescale = 0f;
118 private float m_VhoverTargetHeight = -1.0f; // if <0 then no hover, else its the current target height
119 private float m_VehicleBuoyancy = 0f; //KF: m_VehicleBuoyancy is set by VEHICLE_BUOYANCY for a vehicle.
120 // Modifies gravity. Slider between -1 (double-gravity) and 1 (full anti-gravity)
121 // KF: So far I have found no good method to combine a script-requested .Z velocity and gravity.
122 // Therefore only m_VehicleBuoyancy=1 (0g) will use the script-requested .Z velocity.
123
124 //Attractor properties
125 private float m_verticalAttractionEfficiency = 1.0f; // damped
126 private float m_verticalAttractionTimescale = 500f; // Timescale > 300 means no vert attractor.
127
128 public BSDynamics(BSPrim myPrim)
129 {
130 m_prim = myPrim;
131 m_type = Vehicle.TYPE_NONE;
132 }
133
134 internal void ProcessFloatVehicleParam(Vehicle pParam, float pValue)
135 {
136 switch (pParam)
137 {
138 case Vehicle.ANGULAR_DEFLECTION_EFFICIENCY:
139 if (pValue < 0.01f) pValue = 0.01f;
140 // m_angularDeflectionEfficiency = pValue;
141 break;
142 case Vehicle.ANGULAR_DEFLECTION_TIMESCALE:
143 if (pValue < 0.01f) pValue = 0.01f;
144 // m_angularDeflectionTimescale = pValue;
145 break;
146 case Vehicle.ANGULAR_MOTOR_DECAY_TIMESCALE:
147 if (pValue < 0.01f) pValue = 0.01f;
148 m_angularMotorDecayTimescale = pValue;
149 break;
150 case Vehicle.ANGULAR_MOTOR_TIMESCALE:
151 if (pValue < 0.01f) pValue = 0.01f;
152 m_angularMotorTimescale = pValue;
153 break;
154 case Vehicle.BANKING_EFFICIENCY:
155 if (pValue < 0.01f) pValue = 0.01f;
156 // m_bankingEfficiency = pValue;
157 break;
158 case Vehicle.BANKING_MIX:
159 if (pValue < 0.01f) pValue = 0.01f;
160 // m_bankingMix = pValue;
161 break;
162 case Vehicle.BANKING_TIMESCALE:
163 if (pValue < 0.01f) pValue = 0.01f;
164 // m_bankingTimescale = pValue;
165 break;
166 case Vehicle.BUOYANCY:
167 if (pValue < -1f) pValue = -1f;
168 if (pValue > 1f) pValue = 1f;
169 m_VehicleBuoyancy = pValue;
170 break;
171// case Vehicle.HOVER_EFFICIENCY:
172// if (pValue < 0f) pValue = 0f;
173// if (pValue > 1f) pValue = 1f;
174// m_VhoverEfficiency = pValue;
175// break;
176 case Vehicle.HOVER_HEIGHT:
177 m_VhoverHeight = pValue;
178 break;
179 case Vehicle.HOVER_TIMESCALE:
180 if (pValue < 0.01f) pValue = 0.01f;
181 m_VhoverTimescale = pValue;
182 break;
183 case Vehicle.LINEAR_DEFLECTION_EFFICIENCY:
184 if (pValue < 0.01f) pValue = 0.01f;
185 // m_linearDeflectionEfficiency = pValue;
186 break;
187 case Vehicle.LINEAR_DEFLECTION_TIMESCALE:
188 if (pValue < 0.01f) pValue = 0.01f;
189 // m_linearDeflectionTimescale = pValue;
190 break;
191 case Vehicle.LINEAR_MOTOR_DECAY_TIMESCALE:
192 if (pValue < 0.01f) pValue = 0.01f;
193 m_linearMotorDecayTimescale = pValue;
194 break;
195 case Vehicle.LINEAR_MOTOR_TIMESCALE:
196 if (pValue < 0.01f) pValue = 0.01f;
197 m_linearMotorTimescale = pValue;
198 break;
199 case Vehicle.VERTICAL_ATTRACTION_EFFICIENCY:
200 if (pValue < 0.1f) pValue = 0.1f; // Less goes unstable
201 if (pValue > 1.0f) pValue = 1.0f;
202 m_verticalAttractionEfficiency = pValue;
203 break;
204 case Vehicle.VERTICAL_ATTRACTION_TIMESCALE:
205 if (pValue < 0.01f) pValue = 0.01f;
206 m_verticalAttractionTimescale = pValue;
207 break;
208
209 // These are vector properties but the engine lets you use a single float value to
210 // set all of the components to the same value
211 case Vehicle.ANGULAR_FRICTION_TIMESCALE:
212 m_angularFrictionTimescale = new Vector3(pValue, pValue, pValue);
213 break;
214 case Vehicle.ANGULAR_MOTOR_DIRECTION:
215 m_angularMotorDirection = new Vector3(pValue, pValue, pValue);
216 m_angularMotorApply = 10;
217 break;
218 case Vehicle.LINEAR_FRICTION_TIMESCALE:
219 m_linearFrictionTimescale = new Vector3(pValue, pValue, pValue);
220 break;
221 case Vehicle.LINEAR_MOTOR_DIRECTION:
222 m_linearMotorDirection = new Vector3(pValue, pValue, pValue);
223 m_linearMotorDirectionLASTSET = new Vector3(pValue, pValue, pValue);
224 break;
225 case Vehicle.LINEAR_MOTOR_OFFSET:
226 // m_linearMotorOffset = new Vector3(pValue, pValue, pValue);
227 break;
228
229 }
230 }//end ProcessFloatVehicleParam
231
232 internal void ProcessVectorVehicleParam(Vehicle pParam, Vector3 pValue)
233 {
234 switch (pParam)
235 {
236 case Vehicle.ANGULAR_FRICTION_TIMESCALE:
237 m_angularFrictionTimescale = new Vector3(pValue.X, pValue.Y, pValue.Z);
238 break;
239 case Vehicle.ANGULAR_MOTOR_DIRECTION:
240 m_angularMotorDirection = new Vector3(pValue.X, pValue.Y, pValue.Z);
241 // Limit requested angular speed to 2 rps= 4 pi rads/sec
242 if (m_angularMotorDirection.X > 12.56f) m_angularMotorDirection.X = 12.56f;
243 if (m_angularMotorDirection.X < - 12.56f) m_angularMotorDirection.X = - 12.56f;
244 if (m_angularMotorDirection.Y > 12.56f) m_angularMotorDirection.Y = 12.56f;
245 if (m_angularMotorDirection.Y < - 12.56f) m_angularMotorDirection.Y = - 12.56f;
246 if (m_angularMotorDirection.Z > 12.56f) m_angularMotorDirection.Z = 12.56f;
247 if (m_angularMotorDirection.Z < - 12.56f) m_angularMotorDirection.Z = - 12.56f;
248 m_angularMotorApply = 10;
249 break;
250 case Vehicle.LINEAR_FRICTION_TIMESCALE:
251 m_linearFrictionTimescale = new Vector3(pValue.X, pValue.Y, pValue.Z);
252 break;
253 case Vehicle.LINEAR_MOTOR_DIRECTION:
254 m_linearMotorDirection = new Vector3(pValue.X, pValue.Y, pValue.Z);
255 m_linearMotorDirectionLASTSET = new Vector3(pValue.X, pValue.Y, pValue.Z);
256 break;
257 case Vehicle.LINEAR_MOTOR_OFFSET:
258 // m_linearMotorOffset = new Vector3(pValue.X, pValue.Y, pValue.Z);
259 break;
260 case Vehicle.BLOCK_EXIT:
261 m_BlockingEndPoint = new Vector3(pValue.X, pValue.Y, pValue.Z);
262 break;
263 }
264 }//end ProcessVectorVehicleParam
265
266 internal void ProcessRotationVehicleParam(Vehicle pParam, Quaternion pValue)
267 {
268 switch (pParam)
269 {
270 case Vehicle.REFERENCE_FRAME:
271 // m_referenceFrame = pValue;
272 break;
273 case Vehicle.ROLL_FRAME:
274 m_RollreferenceFrame = pValue;
275 break;
276 }
277 }//end ProcessRotationVehicleParam
278
279 internal void ProcessVehicleFlags(int pParam, bool remove)
280 {
281 if (remove)
282 {
283 if (pParam == -1)
284 {
285 m_flags = (VehicleFlag)0;
286 m_Hoverflags = (VehicleFlag)0;
287 return;
288 }
289 if ((pParam & (int)VehicleFlag.HOVER_GLOBAL_HEIGHT) == (int)VehicleFlag.HOVER_GLOBAL_HEIGHT)
290 {
291 if ((m_Hoverflags & VehicleFlag.HOVER_GLOBAL_HEIGHT) != (VehicleFlag)0)
292 m_Hoverflags &= ~(VehicleFlag.HOVER_GLOBAL_HEIGHT);
293 }
294 if ((pParam & (int)VehicleFlag.HOVER_TERRAIN_ONLY) == (int)VehicleFlag.HOVER_TERRAIN_ONLY)
295 {
296 if ((m_Hoverflags & VehicleFlag.HOVER_TERRAIN_ONLY) != (VehicleFlag)0)
297 m_Hoverflags &= ~(VehicleFlag.HOVER_TERRAIN_ONLY);
298 }
299 if ((pParam & (int)VehicleFlag.HOVER_UP_ONLY) == (int)VehicleFlag.HOVER_UP_ONLY)
300 {
301 if ((m_Hoverflags & VehicleFlag.HOVER_UP_ONLY) != (VehicleFlag)0)
302 m_Hoverflags &= ~(VehicleFlag.HOVER_UP_ONLY);
303 }
304 if ((pParam & (int)VehicleFlag.HOVER_WATER_ONLY) == (int)VehicleFlag.HOVER_WATER_ONLY)
305 {
306 if ((m_Hoverflags & VehicleFlag.HOVER_WATER_ONLY) != (VehicleFlag)0)
307 m_Hoverflags &= ~(VehicleFlag.HOVER_WATER_ONLY);
308 }
309 if ((pParam & (int)VehicleFlag.LIMIT_MOTOR_UP) == (int)VehicleFlag.LIMIT_MOTOR_UP)
310 {
311 if ((m_flags & VehicleFlag.LIMIT_MOTOR_UP) != (VehicleFlag)0)
312 m_flags &= ~(VehicleFlag.LIMIT_MOTOR_UP);
313 }
314 if ((pParam & (int)VehicleFlag.LIMIT_ROLL_ONLY) == (int)VehicleFlag.LIMIT_ROLL_ONLY)
315 {
316 if ((m_flags & VehicleFlag.LIMIT_ROLL_ONLY) != (VehicleFlag)0)
317 m_flags &= ~(VehicleFlag.LIMIT_ROLL_ONLY);
318 }
319 if ((pParam & (int)VehicleFlag.MOUSELOOK_BANK) == (int)VehicleFlag.MOUSELOOK_BANK)
320 {
321 if ((m_flags & VehicleFlag.MOUSELOOK_BANK) != (VehicleFlag)0)
322 m_flags &= ~(VehicleFlag.MOUSELOOK_BANK);
323 }
324 if ((pParam & (int)VehicleFlag.MOUSELOOK_STEER) == (int)VehicleFlag.MOUSELOOK_STEER)
325 {
326 if ((m_flags & VehicleFlag.MOUSELOOK_STEER) != (VehicleFlag)0)
327 m_flags &= ~(VehicleFlag.MOUSELOOK_STEER);
328 }
329 if ((pParam & (int)VehicleFlag.NO_DEFLECTION_UP) == (int)VehicleFlag.NO_DEFLECTION_UP)
330 {
331 if ((m_flags & VehicleFlag.NO_DEFLECTION_UP) != (VehicleFlag)0)
332 m_flags &= ~(VehicleFlag.NO_DEFLECTION_UP);
333 }
334 if ((pParam & (int)VehicleFlag.CAMERA_DECOUPLED) == (int)VehicleFlag.CAMERA_DECOUPLED)
335 {
336 if ((m_flags & VehicleFlag.CAMERA_DECOUPLED) != (VehicleFlag)0)
337 m_flags &= ~(VehicleFlag.CAMERA_DECOUPLED);
338 }
339 if ((pParam & (int)VehicleFlag.NO_X) == (int)VehicleFlag.NO_X)
340 {
341 if ((m_flags & VehicleFlag.NO_X) != (VehicleFlag)0)
342 m_flags &= ~(VehicleFlag.NO_X);
343 }
344 if ((pParam & (int)VehicleFlag.NO_Y) == (int)VehicleFlag.NO_Y)
345 {
346 if ((m_flags & VehicleFlag.NO_Y) != (VehicleFlag)0)
347 m_flags &= ~(VehicleFlag.NO_Y);
348 }
349 if ((pParam & (int)VehicleFlag.NO_Z) == (int)VehicleFlag.NO_Z)
350 {
351 if ((m_flags & VehicleFlag.NO_Z) != (VehicleFlag)0)
352 m_flags &= ~(VehicleFlag.NO_Z);
353 }
354 if ((pParam & (int)VehicleFlag.LOCK_HOVER_HEIGHT) == (int)VehicleFlag.LOCK_HOVER_HEIGHT)
355 {
356 if ((m_Hoverflags & VehicleFlag.LOCK_HOVER_HEIGHT) != (VehicleFlag)0)
357 m_Hoverflags &= ~(VehicleFlag.LOCK_HOVER_HEIGHT);
358 }
359 if ((pParam & (int)VehicleFlag.NO_DEFLECTION) == (int)VehicleFlag.NO_DEFLECTION)
360 {
361 if ((m_flags & VehicleFlag.NO_DEFLECTION) != (VehicleFlag)0)
362 m_flags &= ~(VehicleFlag.NO_DEFLECTION);
363 }
364 if ((pParam & (int)VehicleFlag.LOCK_ROTATION) == (int)VehicleFlag.LOCK_ROTATION)
365 {
366 if ((m_flags & VehicleFlag.LOCK_ROTATION) != (VehicleFlag)0)
367 m_flags &= ~(VehicleFlag.LOCK_ROTATION);
368 }
369 }
370 else
371 {
372 if ((pParam & (int)VehicleFlag.HOVER_GLOBAL_HEIGHT) == (int)VehicleFlag.HOVER_GLOBAL_HEIGHT)
373 {
374 m_Hoverflags |= (VehicleFlag.HOVER_GLOBAL_HEIGHT | m_flags);
375 }
376 if ((pParam & (int)VehicleFlag.HOVER_TERRAIN_ONLY) == (int)VehicleFlag.HOVER_TERRAIN_ONLY)
377 {
378 m_Hoverflags |= (VehicleFlag.HOVER_TERRAIN_ONLY | m_flags);
379 }
380 if ((pParam & (int)VehicleFlag.HOVER_UP_ONLY) == (int)VehicleFlag.HOVER_UP_ONLY)
381 {
382 m_Hoverflags |= (VehicleFlag.HOVER_UP_ONLY | m_flags);
383 }
384 if ((pParam & (int)VehicleFlag.HOVER_WATER_ONLY) == (int)VehicleFlag.HOVER_WATER_ONLY)
385 {
386 m_Hoverflags |= (VehicleFlag.HOVER_WATER_ONLY | m_flags);
387 }
388 if ((pParam & (int)VehicleFlag.LIMIT_MOTOR_UP) == (int)VehicleFlag.LIMIT_MOTOR_UP)
389 {
390 m_flags |= (VehicleFlag.LIMIT_MOTOR_UP | m_flags);
391 }
392 if ((pParam & (int)VehicleFlag.MOUSELOOK_BANK) == (int)VehicleFlag.MOUSELOOK_BANK)
393 {
394 m_flags |= (VehicleFlag.MOUSELOOK_BANK | m_flags);
395 }
396 if ((pParam & (int)VehicleFlag.MOUSELOOK_STEER) == (int)VehicleFlag.MOUSELOOK_STEER)
397 {
398 m_flags |= (VehicleFlag.MOUSELOOK_STEER | m_flags);
399 }
400 if ((pParam & (int)VehicleFlag.NO_DEFLECTION_UP) == (int)VehicleFlag.NO_DEFLECTION_UP)
401 {
402 m_flags |= (VehicleFlag.NO_DEFLECTION_UP | m_flags);
403 }
404 if ((pParam & (int)VehicleFlag.CAMERA_DECOUPLED) == (int)VehicleFlag.CAMERA_DECOUPLED)
405 {
406 m_flags |= (VehicleFlag.CAMERA_DECOUPLED | m_flags);
407 }
408 if ((pParam & (int)VehicleFlag.NO_X) == (int)VehicleFlag.NO_X)
409 {
410 m_flags |= (VehicleFlag.NO_X);
411 }
412 if ((pParam & (int)VehicleFlag.NO_Y) == (int)VehicleFlag.NO_Y)
413 {
414 m_flags |= (VehicleFlag.NO_Y);
415 }
416 if ((pParam & (int)VehicleFlag.NO_Z) == (int)VehicleFlag.NO_Z)
417 {
418 m_flags |= (VehicleFlag.NO_Z);
419 }
420 if ((pParam & (int)VehicleFlag.LOCK_HOVER_HEIGHT) == (int)VehicleFlag.LOCK_HOVER_HEIGHT)
421 {
422 m_Hoverflags |= (VehicleFlag.LOCK_HOVER_HEIGHT);
423 }
424 if ((pParam & (int)VehicleFlag.NO_DEFLECTION) == (int)VehicleFlag.NO_DEFLECTION)
425 {
426 m_flags |= (VehicleFlag.NO_DEFLECTION);
427 }
428 if ((pParam & (int)VehicleFlag.LOCK_ROTATION) == (int)VehicleFlag.LOCK_ROTATION)
429 {
430 m_flags |= (VehicleFlag.LOCK_ROTATION);
431 }
432 }
433 }//end ProcessVehicleFlags
434
435 internal void ProcessTypeChange(Vehicle pType)
436 {
437 // Set Defaults For Type
438 m_type = pType;
439 switch (pType)
440 {
441 case Vehicle.TYPE_NONE:
442 m_linearFrictionTimescale = new Vector3(0, 0, 0);
443 m_angularFrictionTimescale = new Vector3(0, 0, 0);
444 m_linearMotorDirection = Vector3.Zero;
445 m_linearMotorTimescale = 0;
446 m_linearMotorDecayTimescale = 0;
447 m_angularMotorDirection = Vector3.Zero;
448 m_angularMotorTimescale = 0;
449 m_angularMotorDecayTimescale = 0;
450 m_VhoverHeight = 0;
451 m_VhoverTimescale = 0;
452 m_VehicleBuoyancy = 0;
453 m_flags = (VehicleFlag)0;
454 break;
455
456 case Vehicle.TYPE_SLED:
457 m_linearFrictionTimescale = new Vector3(30, 1, 1000);
458 m_angularFrictionTimescale = new Vector3(1000, 1000, 1000);
459 m_linearMotorDirection = Vector3.Zero;
460 m_linearMotorTimescale = 1000;
461 m_linearMotorDecayTimescale = 120;
462 m_angularMotorDirection = Vector3.Zero;
463 m_angularMotorTimescale = 1000;
464 m_angularMotorDecayTimescale = 120;
465 m_VhoverHeight = 0;
466// m_VhoverEfficiency = 1;
467 m_VhoverTimescale = 10;
468 m_VehicleBuoyancy = 0;
469 // m_linearDeflectionEfficiency = 1;
470 // m_linearDeflectionTimescale = 1;
471 // m_angularDeflectionEfficiency = 1;
472 // m_angularDeflectionTimescale = 1000;
473 // m_bankingEfficiency = 0;
474 // m_bankingMix = 1;
475 // m_bankingTimescale = 10;
476 // m_referenceFrame = Quaternion.Identity;
477 m_Hoverflags &=
478 ~(VehicleFlag.HOVER_WATER_ONLY | VehicleFlag.HOVER_TERRAIN_ONLY |
479 VehicleFlag.HOVER_GLOBAL_HEIGHT | VehicleFlag.HOVER_UP_ONLY);
480 m_flags |= (VehicleFlag.NO_DEFLECTION_UP | VehicleFlag.LIMIT_ROLL_ONLY | VehicleFlag.LIMIT_MOTOR_UP);
481 break;
482 case Vehicle.TYPE_CAR:
483 m_linearFrictionTimescale = new Vector3(100, 2, 1000);
484 m_angularFrictionTimescale = new Vector3(1000, 1000, 1000);
485 m_linearMotorDirection = Vector3.Zero;
486 m_linearMotorTimescale = 1;
487 m_linearMotorDecayTimescale = 60;
488 m_angularMotorDirection = Vector3.Zero;
489 m_angularMotorTimescale = 1;
490 m_angularMotorDecayTimescale = 0.8f;
491 m_VhoverHeight = 0;
492// m_VhoverEfficiency = 0;
493 m_VhoverTimescale = 1000;
494 m_VehicleBuoyancy = 0;
495 // // m_linearDeflectionEfficiency = 1;
496 // // m_linearDeflectionTimescale = 2;
497 // // m_angularDeflectionEfficiency = 0;
498 // m_angularDeflectionTimescale = 10;
499 m_verticalAttractionEfficiency = 1f;
500 m_verticalAttractionTimescale = 10f;
501 // m_bankingEfficiency = -0.2f;
502 // m_bankingMix = 1;
503 // m_bankingTimescale = 1;
504 // m_referenceFrame = Quaternion.Identity;
505 m_Hoverflags &= ~(VehicleFlag.HOVER_WATER_ONLY | VehicleFlag.HOVER_TERRAIN_ONLY | VehicleFlag.HOVER_GLOBAL_HEIGHT);
506 m_flags |= (VehicleFlag.NO_DEFLECTION_UP | VehicleFlag.LIMIT_ROLL_ONLY |
507 VehicleFlag.LIMIT_MOTOR_UP);
508 m_Hoverflags |= (VehicleFlag.HOVER_UP_ONLY);
509 break;
510 case Vehicle.TYPE_BOAT:
511 m_linearFrictionTimescale = new Vector3(10, 3, 2);
512 m_angularFrictionTimescale = new Vector3(10,10,10);
513 m_linearMotorDirection = Vector3.Zero;
514 m_linearMotorTimescale = 5;
515 m_linearMotorDecayTimescale = 60;
516 m_angularMotorDirection = Vector3.Zero;
517 m_angularMotorTimescale = 4;
518 m_angularMotorDecayTimescale = 4;
519 m_VhoverHeight = 0;
520// m_VhoverEfficiency = 0.5f;
521 m_VhoverTimescale = 2;
522 m_VehicleBuoyancy = 1;
523 // m_linearDeflectionEfficiency = 0.5f;
524 // m_linearDeflectionTimescale = 3;
525 // m_angularDeflectionEfficiency = 0.5f;
526 // m_angularDeflectionTimescale = 5;
527 m_verticalAttractionEfficiency = 0.5f;
528 m_verticalAttractionTimescale = 5f;
529 // m_bankingEfficiency = -0.3f;
530 // m_bankingMix = 0.8f;
531 // m_bankingTimescale = 1;
532 // m_referenceFrame = Quaternion.Identity;
533 m_Hoverflags &= ~(VehicleFlag.HOVER_TERRAIN_ONLY |
534 VehicleFlag.HOVER_GLOBAL_HEIGHT | VehicleFlag.HOVER_UP_ONLY);
535 m_flags &= ~(VehicleFlag.LIMIT_ROLL_ONLY);
536 m_flags |= (VehicleFlag.NO_DEFLECTION_UP |
537 VehicleFlag.LIMIT_MOTOR_UP);
538 m_Hoverflags |= (VehicleFlag.HOVER_WATER_ONLY);
539 break;
540 case Vehicle.TYPE_AIRPLANE:
541 m_linearFrictionTimescale = new Vector3(200, 10, 5);
542 m_angularFrictionTimescale = new Vector3(20, 20, 20);
543 m_linearMotorDirection = Vector3.Zero;
544 m_linearMotorTimescale = 2;
545 m_linearMotorDecayTimescale = 60;
546 m_angularMotorDirection = Vector3.Zero;
547 m_angularMotorTimescale = 4;
548 m_angularMotorDecayTimescale = 4;
549 m_VhoverHeight = 0;
550// m_VhoverEfficiency = 0.5f;
551 m_VhoverTimescale = 1000;
552 m_VehicleBuoyancy = 0;
553 // m_linearDeflectionEfficiency = 0.5f;
554 // m_linearDeflectionTimescale = 3;
555 // m_angularDeflectionEfficiency = 1;
556 // m_angularDeflectionTimescale = 2;
557 m_verticalAttractionEfficiency = 0.9f;
558 m_verticalAttractionTimescale = 2f;
559 // m_bankingEfficiency = 1;
560 // m_bankingMix = 0.7f;
561 // m_bankingTimescale = 2;
562 // m_referenceFrame = Quaternion.Identity;
563 m_Hoverflags &= ~(VehicleFlag.HOVER_WATER_ONLY | VehicleFlag.HOVER_TERRAIN_ONLY |
564 VehicleFlag.HOVER_GLOBAL_HEIGHT | VehicleFlag.HOVER_UP_ONLY);
565 m_flags &= ~(VehicleFlag.NO_DEFLECTION_UP | VehicleFlag.LIMIT_MOTOR_UP);
566 m_flags |= (VehicleFlag.LIMIT_ROLL_ONLY);
567 break;
568 case Vehicle.TYPE_BALLOON:
569 m_linearFrictionTimescale = new Vector3(5, 5, 5);
570 m_angularFrictionTimescale = new Vector3(10, 10, 10);
571 m_linearMotorDirection = Vector3.Zero;
572 m_linearMotorTimescale = 5;
573 m_linearMotorDecayTimescale = 60;
574 m_angularMotorDirection = Vector3.Zero;
575 m_angularMotorTimescale = 6;
576 m_angularMotorDecayTimescale = 10;
577 m_VhoverHeight = 5;
578// m_VhoverEfficiency = 0.8f;
579 m_VhoverTimescale = 10;
580 m_VehicleBuoyancy = 1;
581 // m_linearDeflectionEfficiency = 0;
582 // m_linearDeflectionTimescale = 5;
583 // m_angularDeflectionEfficiency = 0;
584 // m_angularDeflectionTimescale = 5;
585 m_verticalAttractionEfficiency = 1f;
586 m_verticalAttractionTimescale = 100f;
587 // m_bankingEfficiency = 0;
588 // m_bankingMix = 0.7f;
589 // m_bankingTimescale = 5;
590 // m_referenceFrame = Quaternion.Identity;
591 m_Hoverflags &= ~(VehicleFlag.HOVER_WATER_ONLY | VehicleFlag.HOVER_TERRAIN_ONLY |
592 VehicleFlag.HOVER_UP_ONLY);
593 m_flags &= ~(VehicleFlag.NO_DEFLECTION_UP | VehicleFlag.LIMIT_MOTOR_UP);
594 m_flags |= (VehicleFlag.LIMIT_ROLL_ONLY);
595 m_Hoverflags |= (VehicleFlag.HOVER_GLOBAL_HEIGHT);
596 break;
597
598 }
599 }//end SetDefaultsForType
600
601 internal void Step(float pTimestep, BSScene pParentScene)
602 {
603 if (m_type == Vehicle.TYPE_NONE) return;
604
605 frcount++; // used to limit debug comment output
606 if (frcount > 100)
607 frcount = 0;
608
609 MoveLinear(pTimestep, pParentScene);
610 MoveAngular(pTimestep);
611 LimitRotation(pTimestep);
612 }// end Step
613
614 private void MoveLinear(float pTimestep, BSScene _pParentScene)
615 {
616 if (!m_linearMotorDirection.ApproxEquals(Vector3.Zero, 0.01f)) // requested m_linearMotorDirection is significant
617 {
618 // add drive to body
619 Vector3 addAmount = m_linearMotorDirection/(m_linearMotorTimescale/pTimestep);
620 m_lastLinearVelocityVector += (addAmount*10); // lastLinearVelocityVector is the current body velocity vector?
621
622 // This will work temporarily, but we really need to compare speed on an axis
623 // KF: Limit body velocity to applied velocity?
624 if (Math.Abs(m_lastLinearVelocityVector.X) > Math.Abs(m_linearMotorDirectionLASTSET.X))
625 m_lastLinearVelocityVector.X = m_linearMotorDirectionLASTSET.X;
626 if (Math.Abs(m_lastLinearVelocityVector.Y) > Math.Abs(m_linearMotorDirectionLASTSET.Y))
627 m_lastLinearVelocityVector.Y = m_linearMotorDirectionLASTSET.Y;
628 if (Math.Abs(m_lastLinearVelocityVector.Z) > Math.Abs(m_linearMotorDirectionLASTSET.Z))
629 m_lastLinearVelocityVector.Z = m_linearMotorDirectionLASTSET.Z;
630
631 // decay applied velocity
632 Vector3 decayfraction = ((Vector3.One/(m_linearMotorDecayTimescale/pTimestep)));
633 //Console.WriteLine("decay: " + decayfraction);
634 m_linearMotorDirection -= m_linearMotorDirection * decayfraction * 0.5f;
635 //Console.WriteLine("actual: " + m_linearMotorDirection);
636 }
637 else
638 { // requested is not significant
639 // if what remains of applied is small, zero it.
640 if (m_lastLinearVelocityVector.ApproxEquals(Vector3.Zero, 0.01f))
641 m_lastLinearVelocityVector = Vector3.Zero;
642 }
643
644 // convert requested object velocity to world-referenced vector
645 m_dir = m_lastLinearVelocityVector;
646 Quaternion rot = m_prim.Orientation;
647 Quaternion rotq = new Quaternion(rot.X, rot.Y, rot.Z, rot.W); // rotq = rotation of object
648 m_dir *= rotq; // apply obj rotation to velocity vector
649
650 // add Gravity andBuoyancy
651 // KF: So far I have found no good method to combine a script-requested
652 // .Z velocity and gravity. Therefore only 0g will used script-requested
653 // .Z velocity. >0g (m_VehicleBuoyancy < 1) will used modified gravity only.
654 Vector3 grav = Vector3.Zero;
655 // There is some gravity, make a gravity force vector
656 // that is applied after object velocity.
657 float objMass = m_prim.Mass;
658 // m_VehicleBuoyancy: -1=2g; 0=1g; 1=0g;
659 grav.Z = _pParentScene.DefaultGravity.Z * objMass * (1f - m_VehicleBuoyancy);
660 // Preserve the current Z velocity
661 Vector3 vel_now = m_prim.Velocity;
662 m_dir.Z = vel_now.Z; // Preserve the accumulated falling velocity
663
664 Vector3 pos = m_prim.Position;
665// Vector3 accel = new Vector3(-(m_dir.X - m_lastLinearVelocityVector.X / 0.1f), -(m_dir.Y - m_lastLinearVelocityVector.Y / 0.1f), m_dir.Z - m_lastLinearVelocityVector.Z / 0.1f);
666 Vector3 posChange = new Vector3();
667 posChange.X = pos.X - m_lastPositionVector.X;
668 posChange.Y = pos.Y - m_lastPositionVector.Y;
669 posChange.Z = pos.Z - m_lastPositionVector.Z;
670 double Zchange = Math.Abs(posChange.Z);
671 if (m_BlockingEndPoint != Vector3.Zero)
672 {
673 if (pos.X >= (m_BlockingEndPoint.X - (float)1))
674 {
675 pos.X -= posChange.X + 1;
676 m_prim.Position = pos;
677 }
678 if (pos.Y >= (m_BlockingEndPoint.Y - (float)1))
679 {
680 pos.Y -= posChange.Y + 1;
681 m_prim.Position = pos;
682 }
683 if (pos.Z >= (m_BlockingEndPoint.Z - (float)1))
684 {
685 pos.Z -= posChange.Z + 1;
686 m_prim.Position = pos;
687 }
688 if (pos.X <= 0)
689 {
690 pos.X += posChange.X + 1;
691 m_prim.Position = pos;
692 }
693 if (pos.Y <= 0)
694 {
695 pos.Y += posChange.Y + 1;
696 m_prim.Position = pos;
697 }
698 }
699 if (pos.Z < _pParentScene.GetTerrainHeightAtXY(pos.X, pos.Y))
700 {
701 pos.Z = _pParentScene.GetTerrainHeightAtXY(pos.X, pos.Y) + 2;
702 m_prim.Position = pos;
703 }
704
705 // Check if hovering
706 if ((m_Hoverflags & (VehicleFlag.HOVER_WATER_ONLY | VehicleFlag.HOVER_TERRAIN_ONLY | VehicleFlag.HOVER_GLOBAL_HEIGHT)) != 0)
707 {
708 // We should hover, get the target height
709 if ((m_Hoverflags & VehicleFlag.HOVER_WATER_ONLY) != 0)
710 {
711 m_VhoverTargetHeight = _pParentScene.GetWaterLevel() + m_VhoverHeight;
712 }
713 if ((m_Hoverflags & VehicleFlag.HOVER_TERRAIN_ONLY) != 0)
714 {
715 m_VhoverTargetHeight = _pParentScene.GetTerrainHeightAtXY(pos.X, pos.Y) + m_VhoverHeight;
716 }
717 if ((m_Hoverflags & VehicleFlag.HOVER_GLOBAL_HEIGHT) != 0)
718 {
719 m_VhoverTargetHeight = m_VhoverHeight;
720 }
721
722 if ((m_Hoverflags & VehicleFlag.HOVER_UP_ONLY) != 0)
723 {
724 // If body is aready heigher, use its height as target height
725 if (pos.Z > m_VhoverTargetHeight) m_VhoverTargetHeight = pos.Z;
726 }
727 if ((m_Hoverflags & VehicleFlag.LOCK_HOVER_HEIGHT) != 0)
728 {
729 if ((pos.Z - m_VhoverTargetHeight) > .2 || (pos.Z - m_VhoverTargetHeight) < -.2)
730 {
731 m_prim.Position = pos;
732 }
733 }
734 else
735 {
736 float herr0 = pos.Z - m_VhoverTargetHeight;
737 // Replace Vertical speed with correction figure if significant
738 if (Math.Abs(herr0) > 0.01f)
739 {
740 m_dir.Z = -((herr0 * pTimestep * 50.0f) / m_VhoverTimescale);
741 //KF: m_VhoverEfficiency is not yet implemented
742 }
743 else
744 {
745 m_dir.Z = 0f;
746 }
747 }
748
749// m_VhoverEfficiency = 0f; // 0=boucy, 1=Crit.damped
750// m_VhoverTimescale = 0f; // time to acheive height
751// pTimestep is time since last frame,in secs
752 }
753
754 if ((m_flags & (VehicleFlag.LIMIT_MOTOR_UP)) != 0)
755 {
756 //Start Experimental Values
757 if (Zchange > .3)
758 {
759 grav.Z = (float)(grav.Z * 3);
760 }
761 if (Zchange > .15)
762 {
763 grav.Z = (float)(grav.Z * 2);
764 }
765 if (Zchange > .75)
766 {
767 grav.Z = (float)(grav.Z * 1.5);
768 }
769 if (Zchange > .05)
770 {
771 grav.Z = (float)(grav.Z * 1.25);
772 }
773 if (Zchange > .025)
774 {
775 grav.Z = (float)(grav.Z * 1.125);
776 }
777 float terraintemp = _pParentScene.GetTerrainHeightAtXY(pos.X, pos.Y);
778 float postemp = (pos.Z - terraintemp);
779 if (postemp > 2.5f)
780 {
781 grav.Z = (float)(grav.Z * 1.037125);
782 }
783 //End Experimental Values
784 }
785 if ((m_flags & (VehicleFlag.NO_X)) != 0)
786 {
787 m_dir.X = 0;
788 }
789 if ((m_flags & (VehicleFlag.NO_Y)) != 0)
790 {
791 m_dir.Y = 0;
792 }
793 if ((m_flags & (VehicleFlag.NO_Z)) != 0)
794 {
795 m_dir.Z = 0;
796 }
797
798 m_lastPositionVector = m_prim.Position;
799
800 // Apply velocity
801 m_prim.Velocity = m_dir;
802 // apply gravity force
803 m_prim.Force = grav;
804
805
806 // apply friction
807 Vector3 decayamount = Vector3.One / (m_linearFrictionTimescale / pTimestep);
808 m_lastLinearVelocityVector -= m_lastLinearVelocityVector * decayamount;
809 } // end MoveLinear()
810
811 private void MoveAngular(float pTimestep)
812 {
813 /*
814 private Vector3 m_angularMotorDirection = Vector3.Zero; // angular velocity requested by LSL motor
815 private int m_angularMotorApply = 0; // application frame counter
816 private float m_angularMotorVelocity = 0; // current angular motor velocity (ramps up and down)
817 private float m_angularMotorTimescale = 0; // motor angular velocity ramp up rate
818 private float m_angularMotorDecayTimescale = 0; // motor angular velocity decay rate
819 private Vector3 m_angularFrictionTimescale = Vector3.Zero; // body angular velocity decay rate
820 private Vector3 m_lastAngularVelocity = Vector3.Zero; // what was last applied to body
821 */
822
823 // Get what the body is doing, this includes 'external' influences
824 Vector3 angularVelocity = m_prim.AngularVelocity;
825 // Vector3 angularVelocity = Vector3.Zero;
826
827 if (m_angularMotorApply > 0)
828 {
829 // ramp up to new value
830 // current velocity += error / (time to get there / step interval)
831 // requested speed - last motor speed
832 m_angularMotorVelocity.X += (m_angularMotorDirection.X - m_angularMotorVelocity.X) / (m_angularMotorTimescale / pTimestep);
833 m_angularMotorVelocity.Y += (m_angularMotorDirection.Y - m_angularMotorVelocity.Y) / (m_angularMotorTimescale / pTimestep);
834 m_angularMotorVelocity.Z += (m_angularMotorDirection.Z - m_angularMotorVelocity.Z) / (m_angularMotorTimescale / pTimestep);
835
836 m_angularMotorApply--; // This is done so that if script request rate is less than phys frame rate the expected
837 // velocity may still be acheived.
838 }
839 else
840 {
841 // no motor recently applied, keep the body velocity
842 /* m_angularMotorVelocity.X = angularVelocity.X;
843 m_angularMotorVelocity.Y = angularVelocity.Y;
844 m_angularMotorVelocity.Z = angularVelocity.Z; */
845
846 // and decay the velocity
847 m_angularMotorVelocity -= m_angularMotorVelocity / (m_angularMotorDecayTimescale / pTimestep);
848 } // end motor section
849
850 // Vertical attractor section
851 Vector3 vertattr = Vector3.Zero;
852
853 if (m_verticalAttractionTimescale < 300)
854 {
855 float VAservo = 0.2f / (m_verticalAttractionTimescale * pTimestep);
856 // get present body rotation
857 Quaternion rotq = m_prim.Orientation;
858 // make a vector pointing up
859 Vector3 verterr = Vector3.Zero;
860 verterr.Z = 1.0f;
861 // rotate it to Body Angle
862 verterr = verterr * rotq;
863 // verterr.X and .Y are the World error ammounts. They are 0 when there is no error (Vehicle Body is 'vertical'), and .Z will be 1.
864 // As the body leans to its side |.X| will increase to 1 and .Z fall to 0. As body inverts |.X| will fall and .Z will go
865 // negative. Similar for tilt and |.Y|. .X and .Y must be modulated to prevent a stable inverted body.
866 if (verterr.Z < 0.0f)
867 {
868 verterr.X = 2.0f - verterr.X;
869 verterr.Y = 2.0f - verterr.Y;
870 }
871 // Error is 0 (no error) to +/- 2 (max error)
872 // scale it by VAservo
873 verterr = verterr * VAservo;
874//if (frcount == 0) Console.WriteLine("VAerr=" + verterr);
875
876 // As the body rotates around the X axis, then verterr.Y increases; Rotated around Y then .X increases, so
877 // Change Body angular velocity X based on Y, and Y based on X. Z is not changed.
878 vertattr.X = verterr.Y;
879 vertattr.Y = - verterr.X;
880 vertattr.Z = 0f;
881
882 // scaling appears better usingsquare-law
883 float bounce = 1.0f - (m_verticalAttractionEfficiency * m_verticalAttractionEfficiency);
884 vertattr.X += bounce * angularVelocity.X;
885 vertattr.Y += bounce * angularVelocity.Y;
886
887 } // else vertical attractor is off
888
889 // m_lastVertAttractor = vertattr;
890
891 // Bank section tba
892 // Deflection section tba
893
894 // Sum velocities
895 m_lastAngularVelocity = m_angularMotorVelocity + vertattr; // + bank + deflection
896
897 if ((m_flags & (VehicleFlag.NO_DEFLECTION_UP)) != 0)
898 {
899 m_lastAngularVelocity.X = 0;
900 m_lastAngularVelocity.Y = 0;
901 }
902
903 if (m_lastAngularVelocity.ApproxEquals(Vector3.Zero, 0.01f))
904 {
905 m_lastAngularVelocity = Vector3.Zero; // Reduce small value to zero.
906 }
907
908 // apply friction
909 Vector3 decayamount = Vector3.One / (m_angularFrictionTimescale / pTimestep);
910 m_lastAngularVelocity -= m_lastAngularVelocity * decayamount;
911
912 // Apply to the body
913 m_prim.AngularVelocity = m_lastAngularVelocity;
914
915 } //end MoveAngular
916 internal void LimitRotation(float timestep)
917 {
918 Quaternion rotq = m_prim.Orientation; // rotq = rotation of object
919 Quaternion m_rot = rotq;
920 bool changed = false;
921 if (m_RollreferenceFrame != Quaternion.Identity)
922 {
923 if (rotq.X >= m_RollreferenceFrame.X)
924 {
925 m_rot.X = rotq.X - (m_RollreferenceFrame.X / 2);
926 }
927 if (rotq.Y >= m_RollreferenceFrame.Y)
928 {
929 m_rot.Y = rotq.Y - (m_RollreferenceFrame.Y / 2);
930 }
931 if (rotq.X <= -m_RollreferenceFrame.X)
932 {
933 m_rot.X = rotq.X + (m_RollreferenceFrame.X / 2);
934 }
935 if (rotq.Y <= -m_RollreferenceFrame.Y)
936 {
937 m_rot.Y = rotq.Y + (m_RollreferenceFrame.Y / 2);
938 }
939 changed = true;
940 }
941 if ((m_flags & VehicleFlag.LOCK_ROTATION) != 0)
942 {
943 m_rot.X = 0;
944 m_rot.Y = 0;
945 changed = true;
946 }
947 if (changed)
948 m_prim.Orientation = m_rot;
949 }
950 }
951}
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