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source: orxonox.OLD/branches/powerups/src/world_entities/camera.cc @ 6233

Last change on this file since 6233 was 6222, checked in by bensch, 19 years ago

orxonox/trunk: merged the christmas branche to the trunk
merged with command:
svn merge -r6165:HEAD christmas_branche/ ../trunk/
no conflicts

File size: 6.5 KB
Line 
1/*
2   orxonox - the future of 3D-vertical-scrollers
3
4   Copyright (C) 2004 orx
5
6   This program is free software; you can redistribute it and/or modify
7   it under the terms of the GNU General Public License as published by
8   the Free Software Foundation; either version 2, or (at your option)
9   any later version.
10
11   ### File Specific:
12   main-programmer: Christian Meyer
13   co-programmer: ...
14*/
15#define DEBUG_SPECIAL_MODULE DEBUG_MODULE_WORLD_ENTITY
16
17#include "camera.h"
18
19#include "world.h"
20#include "world_entity.h"
21#include "vector.h"
22#include "event.h"
23#include "event_handler.h"
24
25using namespace std;
26
27////////////
28// CAMERA //
29////////////
30
31/**
32 *  creates a Camera
33*/
34Camera::Camera()
35{
36  this->setClassID(CL_CAMERA, "Camera");
37  this->setName("camera");
38  this->target = new CameraTarget();
39
40  EventHandler::getInstance()->subscribe(this, ES_GAME, KeyMapper::PEV_VIEW0);
41  EventHandler::getInstance()->subscribe(this, ES_GAME, KeyMapper::PEV_VIEW1);
42  EventHandler::getInstance()->subscribe(this, ES_GAME, KeyMapper::PEV_VIEW2);
43  EventHandler::getInstance()->subscribe(this, ES_GAME, KeyMapper::PEV_VIEW3);
44  EventHandler::getInstance()->subscribe(this, ES_GAME, KeyMapper::PEV_VIEW4);
45  EventHandler::getInstance()->subscribe(this, ES_GAME, KeyMapper::PEV_VIEW5);
46
47  this->setFovy(90);
48  this->setAspectRatio(1.2f);
49  this->setClipRegion(.1, 2000);
50
51  this->setViewMode(VIEW_NORMAL);
52
53  this->setParentMode(PNODE_ALL);
54}
55
56/**
57 *  default destructor
58*/
59Camera::~Camera()
60{
61}
62
63/**
64 *  focuses the Camera onto a Target
65 * @param target the new PNode the Camera should look at.
66*/
67void Camera::lookAt(PNode* target)
68{
69  this->target->setParent(target);
70}
71
72/**
73 * @returns The PNode of the Target (from there you can get position and so on
74*/
75PNode* Camera::getTarget()
76{
77  return (PNode*)this->target;
78}
79
80/**
81 *  sets a new AspectRatio
82 * @param aspectRatio the new aspect ratio to set (width / height)
83*/
84void Camera::setAspectRatio(float aspectRatio)
85{
86  this->aspectRatio = aspectRatio;
87}
88
89/**
90 *  sets the Field of View to fofy
91 * @param fovy new field of view factor (in degrees)
92*/
93void Camera::setFovy(float fovy)
94{
95  this->fovy = fovy;
96}
97
98/**
99 * Sets a new clipping region
100 * @param nearClip The near clip plane
101 * @param farClip The far clip plane
102*/
103void Camera::setClipRegion(float nearClip, float farClip)
104{
105  this->nearClip = nearClip;
106  this->farClip = farClip;
107}
108
109/**
110 *  sets the new VideoMode and initializes iteration to it.
111 * @param mode the mode to change to.
112*/
113void Camera::setViewMode(ViewMode mode)
114{
115  currentMode = mode;
116  switch (mode)
117    {
118    default:
119    case VIEW_NORMAL:
120      this->toFovy = 60.0;
121/*      this->setParentSoft("TrackNode");
122      this->target->setParentSoft("TrackNode"); */
123      this->setRelCoorSoft(-10, 5, 0);
124      this->target->setRelCoorSoft(0,0,0);
125      break;
126    case VIEW_BEHIND:
127//      this->toFovy = 120.0;
128//      this->setRelCoorSoft(Vector(3.5, 0, 0));
129  //    this->target->setRelCoorSoft(Vector(10,0,0));
130
131//       if (!strcmp(this->target->getParent()->getName(), "Player"))
132//         this->target->setParentSoft("TrackNode");
133//       else
134//         this->target->setParentSoft("Player");
135//       this->getParent()->debugNode(0);
136
137//      this->setParent("main-Turret");
138//      this->setParentMode(PNODE_ALL);
139//      this->target->setParentSoft("Player");
140
141      break;
142    case VIEW_FRONT:
143      this->toFovy = 120.0;
144/*       this->setParentSoft("Player");
145       this->target->setParentSoft("Player");*/
146       this->setRelCoorSoft(4, 0, 0, 5);
147       this->target->setRelCoorSoft(Vector(10,0,0), 5);
148//      this->target->setRelDirSoft(Quaternion(M_PI/4.0, Vector(0,1,0)));
149      break;
150    case VIEW_LEFT:
151      this->toFovy = 90;
152/*      this->setParentSoft("TrackNode");
153      this->target->setParentSoft("TrackNode");*/
154      this->setRelCoorSoft(0, 1, -10, .5);
155      this->target->setRelCoorSoft(0,0,0);
156      break;
157    case VIEW_RIGHT:
158      this->toFovy = 90;
159/*      this->setParentSoft("TrackNode");
160      this->target->setParentSoft("TrackNode");*/
161      this->setRelCoorSoft(Vector(0, 1, 10));
162      this->target->setRelCoorSoft(0,0,0);
163      break;
164    case VIEW_TOP:
165      this->toFovy= 120;
166/*      this->setParentSoft("TrackNode");
167      this->target->setParentSoft("TrackNode");*/
168      this->setRelCoorSoft(Vector(30, 50, 0));
169      this->target->setRelCoorSoft(35,0,0);
170    }
171}
172
173
174/**
175 *  Updates the position of the camera.
176 * @param dt: The time that elapsed.
177*/
178void Camera::tick(float dt)
179{
180  float tmpFovy = (this->toFovy - this->fovy) ;
181  if (tmpFovy > 0.01)
182    this->fovy += tmpFovy * fabsf(dt);
183}
184
185
186/**
187 *  initialize rendering perspective according to this camera
188
189   This is called immediately before the rendering cycle starts, it sets all global
190   rendering options as well as the GL_PROJECTION matrix according to the camera.
191*/
192void Camera::apply ()
193{
194  // switching to Projection Matrix
195  glMatrixMode (GL_PROJECTION);
196  glLoadIdentity ();
197
198  // setting up the perspective
199  gluPerspective(this->fovy,
200                 this->aspectRatio,
201                 this->nearClip,
202                 this->farClip);
203
204  // speed-up feature
205  Vector cameraPosition = this->getAbsCoor();
206  Vector targetPosition = this->target->getAbsCoor();
207  Vector up = this->getAbsDirV();
208  Vector delay = Vector(0,0,0);
209  if( currentMode != VIEW_FRONT) delay = (this->target->getAbsDirX() * this->target->getSpeed())/30;
210
211  // Setting the Camera Eye, lookAt and up Vectors
212  gluLookAt(cameraPosition.x - delay.x, cameraPosition.y - delay.y, cameraPosition.z - delay.z,
213            targetPosition.x, targetPosition.y, targetPosition.z,
214            up.x, up.y, up.z);
215
216  // switching back to Modeling Matrix
217  glMatrixMode (GL_MODELVIEW);
218//  this->target->getParent()->getParent()->debugDraw(0, 2, Vector(1,0,0));
219}
220
221/**
222 *  processes an event
223 * @param event: the event to process
224*/
225void Camera::process(const Event &event)
226{
227  if( event.type == KeyMapper::PEV_VIEW0)
228    {
229      this->setViewMode(VIEW_NORMAL);
230    }
231  else if( event.type == KeyMapper::PEV_VIEW1)
232    {
233      this->setViewMode(VIEW_BEHIND);
234    }
235  else if( event.type == KeyMapper::PEV_VIEW2)
236    {
237      this->setViewMode(VIEW_FRONT);
238    }
239  else if( event.type == KeyMapper::PEV_VIEW3)
240    {
241      this->setViewMode(VIEW_LEFT);
242    }
243  else if( event.type == KeyMapper::PEV_VIEW4)
244    {
245      this->setViewMode(VIEW_RIGHT);
246    }
247  else if( event.type == KeyMapper::PEV_VIEW5)
248    {
249      this->setViewMode(VIEW_TOP);
250    }
251}
252
253
254///////////////////
255// CAMERA-TARGET //
256///////////////////
257
258
259CameraTarget::CameraTarget()
260{
261  this->setClassID(CL_CAMERA_TARGET, "CameraTarget");
262//  this->setParentMode(PNODE_MOVEMENT);
263}
264
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