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source: code/trunk/src/orxonox/objects/worldentities/Camera.cc @ 2691

Last change on this file since 2691 was 2662, checked in by rgrieder, 16 years ago

Merged presentation branch back to trunk.

File size: 4.9 KB
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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 *      Benjamin Knecht
26 *
27 */
28
29#include "OrxonoxStableHeaders.h"
30#include "Camera.h"
31
32#include <string>
33#include <cassert>
34
35#include <OgreCamera.h>
36#include <OgreSceneManager.h>
37#include <OgreSceneNode.h>
38
39#include "util/Exception.h"
40#include "core/CoreIncludes.h"
41#include "core/ConfigValueIncludes.h"
42#include "objects/Scene.h"
43#include "CameraManager.h"
44
45namespace orxonox
46{
47    CreateFactory(Camera);
48
49    Camera::Camera(BaseObject* creator) : StaticEntity(creator)
50    {
51        RegisterObject(Camera);
52
53        if (!this->getScene())
54            ThrowException(AbortLoading, "Can't create Camera, no scene.");
55        if (!this->getScene()->getSceneManager())
56            ThrowException(AbortLoading, "Can't create Camera, no scene-manager given.");
57        if (!this->getScene()->getRootSceneNode())
58            ThrowException(AbortLoading, "Can't create Camera, no root-scene-node given.");
59
60        this->camera_ = this->getScene()->getSceneManager()->createCamera(getUniqueNumberString());
61        this->cameraNode_ = this->getScene()->getRootSceneNode()->createChildSceneNode();
62        this->attachNode(this->cameraNode_);
63        this->cameraNode_->attachObject(this->camera_);
64
65        this->bHasFocus_ = false;
66        this->bDrag_ = false;
67        this->nearClipDistance_ = 1;
68
69        this->setObjectMode(0x0);
70
71        this->setConfigValues();
72        this->configvaluecallback_changedNearClipDistance();
73    }
74
75    Camera::~Camera()
76    {
77        if (this->isInitialized())
78        {
79            this->releaseFocus();
80
81            this->cameraNode_->detachAllObjects();
82            this->getScene()->getSceneManager()->destroyCamera(this->camera_);
83
84            if (this->bDrag_)
85                this->detachNode(this->cameraNode_);
86
87            if (this->getScene()->getSceneManager())
88                this->getScene()->getSceneManager()->destroySceneNode(this->cameraNode_->getName());
89        }
90    }
91
92    void Camera::setConfigValues()
93    {
94        SetConfigValue(nearClipDistance_, 1.0f).callback(this, &Camera::configvaluecallback_changedNearClipDistance);
95    }
96
97    void Camera::configvaluecallback_changedNearClipDistance()
98    {
99        this->camera_->setNearClipDistance(this->nearClipDistance_);
100    }
101
102    void Camera::tick(float dt)
103    {
104        SUPER(Camera, tick, dt);
105
106        if (this->bDrag_)
107        {
108            // this stuff here may need some adjustments
109            float coeff = min(1.0f, 15.0f * dt);
110
111            Vector3 offset = this->getWorldPosition() - this->cameraNode_->getWorldPosition();
112            this->cameraNode_->translate(coeff * offset);
113
114            this->cameraNode_->setOrientation(Quaternion::Slerp(coeff, this->cameraNode_->getWorldOrientation(), this->getWorldOrientation(), true));
115            //this->cameraNode_->setOrientation(this->getWorldOrientation());
116        }
117    }
118
119    void Camera::requestFocus()
120    {
121        CameraManager::getInstance().requestFocus(this);
122    }
123
124    void Camera::releaseFocus()
125    {
126        CameraManager::getInstance().releaseFocus(this);
127    }
128
129    /**
130        what to do when camera loses focus (do not request focus in this function!!)
131        this is called by the CameraManager singleton class to notify the camera
132    */
133    void Camera::removeFocus()
134    {
135        this->bHasFocus_ = false;
136    }
137
138    void Camera::setFocus()
139    {
140        this->bHasFocus_ = true;
141        CameraManager::getInstance().useCamera(this->camera_);
142    }
143
144    void Camera::setDrag(bool bDrag)
145    {
146        if (bDrag != this->bDrag_)
147        {
148            this->bDrag_ = bDrag;
149
150            if (!bDrag)
151            {
152                this->attachNode(this->cameraNode_);
153                this->cameraNode_->setPosition(Vector3::ZERO);
154                this->cameraNode_->setOrientation(Quaternion::IDENTITY);
155            }
156            else
157            {
158                this->detachNode(this->cameraNode_);
159                this->cameraNode_->setPosition(this->getWorldPosition());
160                this->cameraNode_->setOrientation(this->getWorldOrientation());
161            }
162        }
163    }
164}
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