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source: code/trunk/src/orxonox/items/Engine.cc @ 7996

Last change on this file since 7996 was 7547, checked in by dafrick, 14 years ago

Documenting and cleanup.

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1/*
2 *   ORXONOX - the hottest 3D action shooter ever to exist
3 *                    > www.orxonox.net <
4 *
5 *
6 *   License notice:
7 *
8 *   This program is free software; you can redistribute it and/or
9 *   modify it under the terms of the GNU General Public License
10 *   as published by the Free Software Foundation; either version 2
11 *   of the License, or (at your option) any later version.
12 *
13 *   This program is distributed in the hope that it will be useful,
14 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
15 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16 *   GNU General Public License for more details.
17 *
18 *   You should have received a copy of the GNU General Public License
19 *   along with this program; if not, write to the Free Software
20 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
21 *
22 *   Author:
23 *      Fabian 'x3n' Landau
24 *   Co-authors:
25 *      ...
26 *
27 */
28
29#include "Engine.h"
30
31#include "util/Math.h"
32#include "core/CoreIncludes.h"
33#include "core/ConfigValueIncludes.h"
34#include "core/XMLPort.h"
35#include "Scene.h"
36#include "worldentities/pawns/SpaceShip.h"
37#include "tools/Shader.h"
38
39namespace orxonox
40{
41    CreateFactory(Engine);
42
43    Engine::Engine(BaseObject* creator) : Item(creator)
44    {
45        RegisterObject(Engine);
46
47        this->ship_ = 0;
48        this->shipID_ = OBJECTID_UNKNOWN;
49
50        this->boostFactor_ = 1.5;
51        this->speedFactor_ = 1.0;
52
53        this->maxSpeedFront_ = 0.0;
54        this->maxSpeedBack_ = 0.0;
55        this->maxSpeedLeftRight_ = 0.0;
56        this->maxSpeedUpDown_ = 0.0;
57
58        this->accelerationFront_ = 0.0;
59        this->accelerationBrake_ = 0.0;
60        this->accelerationBack_ = 0.0;
61        this->accelerationLeftRight_ = 0.0;
62        this->accelerationUpDown_ = 0.0;
63
64        this->boostBlur_ = 0;
65
66        this->speedAdd_ = 0.0;
67        this->speedMultiply_ = 1.0;
68
69        this->setConfigValues();
70        this->registerVariables();
71    }
72
73    Engine::~Engine()
74    {
75        if (this->isInitialized() && this->ship_)
76        {
77            this->ship_->setEngine(0);
78
79            if (this->boostBlur_)
80                this->boostBlur_->destroy();
81        }
82    }
83
84    void Engine::XMLPort(Element& xmlelement, XMLPort::Mode mode)
85    {
86        SUPER(Engine, XMLPort, xmlelement, mode);
87
88        XMLPortParam(Engine, "boostfactor", setBoostFactor, getBoostFactor, xmlelement, mode);
89
90        XMLPortParam(Engine, "speedfront",     setMaxSpeedFront,     setMaxSpeedFront,     xmlelement, mode);
91        XMLPortParam(Engine, "speedback",      setMaxSpeedBack,      setMaxSpeedBack,      xmlelement, mode);
92        XMLPortParam(Engine, "speedleftright", setMaxSpeedLeftRight, setMaxSpeedLeftRight, xmlelement, mode);
93        XMLPortParam(Engine, "speedupdown",    setMaxSpeedUpDown,    setMaxSpeedUpDown,    xmlelement, mode);
94
95        XMLPortParam(Engine, "accelerationfront",     setAccelerationFront,     setAccelerationFront,     xmlelement, mode);
96        XMLPortParam(Engine, "accelerationbrake",     setAccelerationBrake,     setAccelerationBrake,     xmlelement, mode);
97        XMLPortParam(Engine, "accelerationback",      setAccelerationBack,      setAccelerationBack,      xmlelement, mode);
98        XMLPortParam(Engine, "accelerationleftright", setAccelerationLeftRight, setAccelerationLeftRight, xmlelement, mode);
99        XMLPortParam(Engine, "accelerationupdown",    setAccelerationUpDown,    setAccelerationUpDown,    xmlelement, mode);
100    }
101
102    void Engine::setConfigValues()
103    {
104        SetConfigValue(blurStrength_, 3.0f);
105    }
106
107    void Engine::registerVariables()
108    {
109        registerVariable(this->shipID_, VariableDirection::ToClient, new NetworkCallback<Engine>(this, &Engine::networkcallback_shipID));
110
111        registerVariable(this->speedFactor_, VariableDirection::ToClient);
112        registerVariable(this->boostFactor_, VariableDirection::ToClient);
113
114        registerVariable(this->maxSpeedFront_,     VariableDirection::ToClient);
115        registerVariable(this->maxSpeedBack_,      VariableDirection::ToClient);
116        registerVariable(this->maxSpeedLeftRight_, VariableDirection::ToClient);
117        registerVariable(this->maxSpeedUpDown_,    VariableDirection::ToClient);
118
119        registerVariable(this->accelerationFront_,     VariableDirection::ToClient);
120        registerVariable(this->accelerationBrake_,     VariableDirection::ToClient);
121        registerVariable(this->accelerationBack_,      VariableDirection::ToClient);
122        registerVariable(this->accelerationLeftRight_, VariableDirection::ToClient);
123        registerVariable(this->accelerationUpDown_,    VariableDirection::ToClient);
124
125        registerVariable(this->speedAdd_, VariableDirection::ToClient);
126        registerVariable(this->speedMultiply_, VariableDirection::ToClient);
127    }
128
129    void Engine::networkcallback_shipID()
130    {
131        this->ship_ = 0;
132
133        if (this->shipID_ != OBJECTID_UNKNOWN)
134        {
135            Synchronisable* object = Synchronisable::getSynchronisable(this->shipID_);
136            if (object)
137                this->addToSpaceShip(orxonox_cast<SpaceShip*>(object));
138        }
139    }
140
141    void Engine::tick(float dt)
142    {
143        if (!this->ship_)
144        {
145            if (this->shipID_)
146            {
147                this->networkcallback_shipID();
148
149                if (!this->ship_)
150                    return;
151            }
152            else
153                return;
154        }
155
156        if (!this->isActive())
157            return;
158
159        SUPER(Engine, tick, dt);
160
161        const Vector3& direction = this->getDirection();
162        Vector3 velocity = this->ship_->getLocalVelocity();
163        Vector3 acceleration = Vector3::ZERO;
164
165        float factor = 1.0f / this->speedFactor_;
166        velocity *= factor;
167
168        if (direction.z < 0)
169        {
170            if (this->maxSpeedFront_ != 0)
171            {
172                float boostfactor = (this->ship_->getBoost() ? this->boostFactor_ : 1.0f);
173                acceleration.z = direction.z * this->accelerationFront_ * boostfactor * clamp((this->maxSpeedFront_ - -velocity.z/boostfactor) / this->maxSpeedFront_, 0.0f, 1.0f);
174            }
175        }
176        else if (direction.z > 0)
177        {
178            if (velocity.z < 0)
179                acceleration.z = direction.z * this->accelerationBrake_;
180            else if (this->maxSpeedBack_ != 0)
181                acceleration.z = direction.z * this->accelerationBack_ * clamp((this->maxSpeedBack_ - velocity.z) / this->maxSpeedBack_, 0.0f, 1.0f);
182        }
183
184        if (this->maxSpeedLeftRight_ != 0)
185        {
186            if (direction.x < 0)
187                acceleration.x = direction.x * this->accelerationLeftRight_ * clamp((this->maxSpeedLeftRight_ - -velocity.x) / this->maxSpeedLeftRight_, 0.0f, 1.0f);
188            else if (direction.x > 0)
189                acceleration.x = direction.x * this->accelerationLeftRight_ * clamp((this->maxSpeedLeftRight_ - velocity.x) / this->maxSpeedLeftRight_, 0.0f, 1.0f);
190        }
191
192        if (this->maxSpeedUpDown_ != 0)
193        {
194            if (direction.y < 0)
195                acceleration.y = direction.y * this->accelerationUpDown_ * clamp((this->maxSpeedUpDown_ - -velocity.y) / this->maxSpeedUpDown_, 0.0f, 1.0f);
196            else if (direction.y > 0)
197                acceleration.y = direction.y * this->accelerationUpDown_ * clamp((this->maxSpeedUpDown_ - velocity.y) / this->maxSpeedUpDown_, 0.0f, 1.0f);
198        }
199
200        this->ship_->setAcceleration(this->ship_->getOrientation() * (acceleration*this->getSpeedMultiply()+Vector3(0,0,-this->getSpeedAdd())));
201
202        if (!this->ship_->getPermanentBoost())
203            this->ship_->setBoost(false);
204        this->ship_->setSteeringDirection(Vector3::ZERO);
205
206        if (!this->boostBlur_ && this->ship_->hasLocalController() && this->ship_->hasHumanController())
207        {
208            this->boostBlur_ = new Shader(this->ship_->getScene()->getSceneManager());
209            this->boostBlur_->setCompositor("Radial Blur");
210        }
211
212        if (this->boostBlur_ && this->maxSpeedFront_ != 0 && this->boostFactor_ != 1)
213            this->boostBlur_->setParameter("Ogre/Compositor/Radial_Blur", 0, 0, "sampleStrength", this->blurStrength_ * clamp((-velocity.z - this->maxSpeedFront_) / ((this->boostFactor_ - 1) * this->maxSpeedFront_), 0.0f, 1.0f));
214    }
215
216    void Engine::changedActivity()
217    {
218        SUPER(Engine, changedActivity);
219
220        if (this->boostBlur_)
221            this->boostBlur_->setVisible(this->isVisible());
222    }
223
224    void Engine::addToSpaceShip(SpaceShip* ship)
225    {
226        this->ship_ = ship;
227
228        if (ship)
229        {
230            this->shipID_ = ship->getObjectID();
231            if (ship->getEngine() != this)
232                ship->setEngine(this);
233
234            if (this->boostBlur_)
235            {
236                this->boostBlur_->destroy();
237                this->boostBlur_ = 0;
238            }
239        }
240    }
241
242    const Vector3& Engine::getDirection() const
243    {
244        if (this->ship_)
245            return this->ship_->getSteeringDirection();
246        else
247            return Vector3::ZERO;
248    }
249
250    PickupCarrier* Engine::getCarrierParent(void) const
251    {
252        return this->ship_;
253    }
254
255    const Vector3& Engine::getCarrierPosition(void) const
256    {
257        return this->ship_->getWorldPosition();
258    }
259}
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