1 | |
---|
2 | |
---|
3 | /* |
---|
4 | orxonox - the future of 3D-vertical-scrollers |
---|
5 | |
---|
6 | Copyright (C) 2004 orx |
---|
7 | |
---|
8 | This program is free software; you can redistribute it and/or modify |
---|
9 | it under the terms of the GNU General Public License as published by |
---|
10 | the Free Software Foundation; either version 2, or (at your option) |
---|
11 | any later version. |
---|
12 | |
---|
13 | ### File Specific: |
---|
14 | main-programmer: Benjamin Grauer |
---|
15 | co-programmer: ... |
---|
16 | */ |
---|
17 | |
---|
18 | |
---|
19 | #include "light.h" |
---|
20 | |
---|
21 | #include "glincl.h" |
---|
22 | |
---|
23 | using namespace std; |
---|
24 | |
---|
25 | //! Definition of the Lights |
---|
26 | int lightsV[] = {GL_LIGHT0, GL_LIGHT1, GL_LIGHT2, GL_LIGHT3, GL_LIGHT4, GL_LIGHT5, GL_LIGHT6, GL_LIGHT7}; |
---|
27 | |
---|
28 | |
---|
29 | /** |
---|
30 | \brief standard constructor for a Light |
---|
31 | */ |
---|
32 | Light::Light () |
---|
33 | { |
---|
34 | this->setClassName ("Light"); |
---|
35 | |
---|
36 | glEnable (GL_LIGHTING); |
---|
37 | this->lights = new LightValue*[NUMBEROFLIGHTS]; |
---|
38 | for (int i = 0; i < NUMBEROFLIGHTS; i++) |
---|
39 | lights[i] = NULL; |
---|
40 | this->currentLight = new LightValue; |
---|
41 | } |
---|
42 | |
---|
43 | /** |
---|
44 | \brief standard deconstructor |
---|
45 | \todo this deconstructor is not jet implemented - do it |
---|
46 | |
---|
47 | */ |
---|
48 | Light::~Light () |
---|
49 | { |
---|
50 | glDisable(GL_LIGHTING); |
---|
51 | |
---|
52 | for (int i = 0; i < NUMBEROFLIGHTS; i++) |
---|
53 | this->deleteLight(i); |
---|
54 | delete lights; |
---|
55 | Light::singletonRef = NULL; |
---|
56 | } |
---|
57 | |
---|
58 | Light* Light::singletonRef = NULL; |
---|
59 | |
---|
60 | /** |
---|
61 | \returns The Instance of the Lights |
---|
62 | */ |
---|
63 | Light* Light::getInstance(void) |
---|
64 | { |
---|
65 | if (singletonRef) |
---|
66 | return singletonRef; |
---|
67 | else |
---|
68 | return Light::singletonRef = new Light(); |
---|
69 | } |
---|
70 | |
---|
71 | /** |
---|
72 | \brief initializes a new Light with default values, and enables GL_LIGHTING |
---|
73 | */ |
---|
74 | void Light::init(int lightNumber) |
---|
75 | { |
---|
76 | PRINTF(3)("initializing Light number %d.\n", lightNumber); |
---|
77 | // enable The light |
---|
78 | glEnable(lightsV[lightNumber]); |
---|
79 | this->currentLight = lights[lightNumber] = new LightValue; |
---|
80 | |
---|
81 | // set default values |
---|
82 | this->currentLight->lightNumber = lightNumber; |
---|
83 | this->setPosition(Vector(0.0, 0.0, 0.0)); |
---|
84 | this->setDiffuseColor(1.0, 1.0, 1.0); |
---|
85 | this->setSpecularColor(1.0, 1.0, 1.0); |
---|
86 | // lmodelAmbient[] = {.1, .1, .1, 1.0}; |
---|
87 | } |
---|
88 | |
---|
89 | /** |
---|
90 | \brief Adds a new Light, by selecting the First free slot. |
---|
91 | |
---|
92 | if no slot is free error |
---|
93 | */ |
---|
94 | int Light::addLight(void) |
---|
95 | { |
---|
96 | for (int i = 0; i < NUMBEROFLIGHTS; i++) |
---|
97 | if (!this->lights[i]) |
---|
98 | return addLight(i); |
---|
99 | PRINTF(1)("no more light slots availiable. All %d already taken\n", NUMBEROFLIGHTS); |
---|
100 | return -1; |
---|
101 | } |
---|
102 | |
---|
103 | /** |
---|
104 | \brief Adds a new Light |
---|
105 | \param lightNumber The number of the light to add. |
---|
106 | |
---|
107 | if the Number is not free: warn, automatically choose another slot. |
---|
108 | */ |
---|
109 | int Light::addLight(int lightNumber) |
---|
110 | { |
---|
111 | if (this->lights[lightNumber]) |
---|
112 | { |
---|
113 | PRINTF(2)("Lightslot %d is allready taken, trying another one\n", lightNumber); |
---|
114 | return this->addLight(); |
---|
115 | } |
---|
116 | this->init(lightNumber); |
---|
117 | this->currentLight = this->lights[lightNumber]; |
---|
118 | return lightNumber; |
---|
119 | } |
---|
120 | |
---|
121 | /** |
---|
122 | \brief select the light to work with |
---|
123 | \param lightNumber the light to work with |
---|
124 | */ |
---|
125 | void Light::editLightNumber(int lightNumber) |
---|
126 | { |
---|
127 | this->currentLight = lights[lightNumber]; |
---|
128 | } |
---|
129 | |
---|
130 | /** |
---|
131 | \brief Delete the current Light |
---|
132 | */ |
---|
133 | void Light::deleteLight(void) |
---|
134 | { |
---|
135 | this->deleteLight(this->currentLight->lightNumber); |
---|
136 | } |
---|
137 | |
---|
138 | /** |
---|
139 | \brief delete light. |
---|
140 | \param lightnumber the number of the light to delete |
---|
141 | */ |
---|
142 | void Light::deleteLight(int lightNumber) |
---|
143 | { |
---|
144 | if (this->lights[lightNumber]) |
---|
145 | { |
---|
146 | PRINTF(3)("deleting Light number %d\n", lightNumber); |
---|
147 | delete this->lights[lightNumber]; |
---|
148 | glDisable(lightsV[lightNumber]); |
---|
149 | this->lights[lightNumber] = NULL; |
---|
150 | } |
---|
151 | } |
---|
152 | |
---|
153 | |
---|
154 | |
---|
155 | // set Attributes |
---|
156 | /** |
---|
157 | \brief Sets a Position for the Light. |
---|
158 | \param position The new position of the Light. |
---|
159 | \todo patrick: is it ok to set a Light Position even if it is derived from p_node?? |
---|
160 | */ |
---|
161 | void Light::setPosition(Vector position) |
---|
162 | { |
---|
163 | this->currentLight->lightPosition[0] = position.x; |
---|
164 | this->currentLight->lightPosition[1] = position.y; |
---|
165 | this->currentLight->lightPosition[2] = position.z; |
---|
166 | this->currentLight->lightPosition[3] = 0.0; |
---|
167 | |
---|
168 | glLightfv (GL_LIGHT0, GL_POSITION, this->currentLight->lightPosition); |
---|
169 | } |
---|
170 | |
---|
171 | void Light::setPosition(GLfloat x, GLfloat y, GLfloat z) |
---|
172 | { |
---|
173 | this->currentLight->lightPosition[0] = x; |
---|
174 | this->currentLight->lightPosition[1] = y; |
---|
175 | this->currentLight->lightPosition[2] = z; |
---|
176 | this->currentLight->lightPosition[3] = 0.0; |
---|
177 | |
---|
178 | glLightfv (GL_LIGHT0, GL_POSITION, this->currentLight->lightPosition); |
---|
179 | } |
---|
180 | |
---|
181 | /** |
---|
182 | \brief sets an emitting Diffuse color for the Light |
---|
183 | \param r red |
---|
184 | \param g green |
---|
185 | \param b blue |
---|
186 | */ |
---|
187 | void Light::setDiffuseColor(GLfloat r, GLfloat g, GLfloat b) |
---|
188 | { |
---|
189 | this->currentLight->diffuseColor[0] = r; |
---|
190 | this->currentLight->diffuseColor[1] = g; |
---|
191 | this->currentLight->diffuseColor[2] = b; |
---|
192 | this->currentLight->diffuseColor[3] = 1.0; |
---|
193 | |
---|
194 | glLightfv (GL_LIGHT0, GL_DIFFUSE, this->currentLight->diffuseColor); |
---|
195 | } |
---|
196 | |
---|
197 | |
---|
198 | /** |
---|
199 | \brief sets an emitting Ambient color for the Light |
---|
200 | \param r red |
---|
201 | \param g green |
---|
202 | \param b blue |
---|
203 | */ |
---|
204 | void Light::setSpecularColor(GLfloat r, GLfloat g, GLfloat b) |
---|
205 | { |
---|
206 | this->currentLight->specularColor[0] = r; |
---|
207 | this->currentLight->specularColor[1] = g; |
---|
208 | this->currentLight->specularColor[2] = b; |
---|
209 | this->currentLight->specularColor[3] = 1.0; |
---|
210 | |
---|
211 | glLightfv (GL_LIGHT0, GL_SPECULAR, this->currentLight->specularColor); |
---|
212 | } |
---|
213 | |
---|
214 | // get Attributes |
---|
215 | |
---|
216 | /** |
---|
217 | \returns the Position of the Light |
---|
218 | */ |
---|
219 | Vector Light::getPosition(void) |
---|
220 | { |
---|
221 | Vector tmpPosition(this->currentLight->lightPosition[0], this->currentLight->lightPosition[1], this->currentLight->lightPosition[2]); |
---|
222 | return tmpPosition; |
---|
223 | } |
---|