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source: orxonox.OLD/trunk/src/lib/graphics/effects/fog_effect.cc @ 9438

Last change on this file since 9438 was 9406, checked in by bensch, 18 years ago

orxonox/trunk: merged the proxy back

merged with commandsvn merge -r9346:HEAD https://svn.orxonox.net/orxonox/branches/proxy .

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File size: 7.2 KB
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[6741]1/*
[8495]2  orxonox - the future of 3D-vertical-scrollers
[6741]3
[8495]4  Copyright (C) 2004 orx
[6741]5
[8495]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.
[6741]10
11### File Specific:
[8495]12  main-programmer: hdavid, amaechler
[6741]13*/
14
15#include "fog_effect.h"
16
[7193]17#include "util/loading/load_param.h"
18#include "util/loading/factory.h"
[6741]19
[8255]20#include "shell_command.h"
[9112]21#include "script_class.h"
[9235]22#include "cloud_effect.h"
[6772]23
[8793]24// Define shell commands
[9235]25//SHELL_COMMAND(activate, FogEffect, activateFog);
26//SHELL_COMMAND(deactivate, FogEffect, deactivateFog);
[8495]27SHELL_COMMAND(fadein, FogEffect, fadeInFog);
28SHELL_COMMAND(fadeout, FogEffect, fadeOutFog);
[8255]29
[6741]30
[9406]31
[9112]32CREATE_SCRIPTABLE_CLASS(FogEffect, CL_FOG_EFFECT,
33                        addMethod("fadeIn", ExecutorLua0<FogEffect>(&FogEffect::fadeInFog))
34                            ->addMethod("fadeOut", ExecutorLua0<FogEffect>(&FogEffect::fadeOutFog))
35                            ->addMethod("activate", ExecutorLua0<FogEffect>(&FogEffect::activate))
36                            ->addMethod("deactivate", ExecutorLua0<FogEffect>(&FogEffect::deactivate))
37                       );
38
[6772]39CREATE_FACTORY(FogEffect, CL_FOG_EFFECT);
[6741]40
[8793]41/**
42 * @brief standard constructor
43 */
[8495]44FogEffect::FogEffect(const TiXmlElement* root) {
45    this->setClassID(CL_FOG_EFFECT, "FogEffect");
[6741]46
[8793]47    // Initialize values
[8495]48    this->init();
[6772]49
[8793]50    // Load XML params
[8495]51    if (root != NULL)
52        this->loadParams(root);
[7107]53
[8793]54    // Activate fog, if chosen to be activated by default
[8495]55    if (this->fogActivate)
56        this->activate();
[6741]57}
58
[8793]59/**
60 * @brief standard destructor
61 */
[8495]62FogEffect::~FogEffect() {
63    this->deactivate();
[6980]64}
[6741]65
[8793]66/**
67 * @brief initalizes the fog effect with default values
68 */
69void FogEffect::init() {
70    // default values
71  this->fogMode = GL_LINEAR;
72  this->fogDensity = 0.005;
73  this->fogStart = 0;
74  this->fogEnd = 300;
75  this->colorVector = Vector(0.6, 0.0, 0.0);
[6741]76
[8793]77    // init variables
78  this->fogFadeInDuration = 0;
79  this->fogFadeOutDuration = 0;
80  this->fogFadeDensity = 0;
81  this->fogFadeEnd = 0;
82
83  this->localTimer = 0;
84  this->fogActivate = false;
85  this->fogFadeInActivate = false;
86  this->fogFadeOutActivate = false;
[9235]87 
88  this->cloudColor = Vector(0.2f, 0.3f, 0.3f);
89  this->skyColor = Vector(0.2f, 0.3f, 0.3f);
[8793]90}
91
92/**
93 * @brief loads the fog effect parameters.
94 * @param root: the XML-Element to load the data from
95 */
[8495]96void FogEffect::loadParams(const TiXmlElement* root) {
97    WeatherEffect::loadParams(root);
[6741]98
[9235]99    LoadParam(root, "mode", this, FogEffect, setFogMode).describe("fog mode (linear, exponential)");
100    LoadParam(root, "density", this, FogEffect, setFogDensity).describe("fog density if exp. fog");
101    LoadParam(root, "range", this, FogEffect, setFogRange).describe("fog range: start, end");
102    LoadParam(root, "color", this, FogEffect, setFogColor).describe("fog color: r,g,b");
103    LoadParam(root, "fadeinduration", this, FogEffect, setFogFadeIn).describe("duration of the fade in");
104    LoadParam(root, "fadeoutduration", this, FogEffect, setFogFadeOut).describe("duration of the fade out");
105    LoadParam(root, "cloudcolor", this, FogEffect, setCloudColor);
106    LoadParam(root, "skycolor", this, FogEffect, setSkyColor);
107   
[8495]108    LOAD_PARAM_START_CYCLE(root, element);
109    {
[9235]110      LoadParam_CYCLE(element, "option", this, FogEffect, setFogOption).describe("sets a fog option: activate");
[8495]111    }
112    LOAD_PARAM_END_CYCLE(element);
[7810]113}
[6772]114
[8793]115/**
116 * @brief activates the fog effect
117 */
[8495]118void FogEffect::activate() {
[9006]119    PRINTF(3)( "Activating FogEffect\n");
[6772]120
[8793]121    // init fogGL
[8495]122    GLfloat fogColor[4] = { colorVector.x, colorVector.y, colorVector.z, 1.0};
123    glFogi(GL_FOG_MODE, this->fogMode);
124    glFogfv(GL_FOG_COLOR, fogColor);
125    glHint(GL_FOG_HINT, GL_DONT_CARE);
126    glFogf(GL_FOG_DENSITY, this->fogDensity);
127    glFogf(GL_FOG_START, this->fogStart);
128    glFogf(GL_FOG_END, this->fogEnd);
[8316]129
[8793]130    this->fogActivate = true;
131
[8495]132    glEnable(GL_FOG);
[9235]133   
134    // Store cloud- and sky color before the snow
135    this->oldCloudColor = CloudEffect::cloudColor;
136    this->oldSkyColor   = CloudEffect::skyColor;
137   
138    // Change the colors
139    CloudEffect::changeCloudColor(this->cloudColor, this->fogFadeInDuration);
140    CloudEffect::changeSkyColor(this->skyColor, this->fogFadeInDuration);
[6752]141}
142
[8793]143/**
144 * @brief deactivates the fog effect
145 */
[8495]146void FogEffect::deactivate() {
[9006]147    PRINTF(3)("Deactivating FogEffect\n");
[8255]148
[8495]149    this->fogFadeInActivate = false;
150    this->fogFadeOutActivate = false;
151    this->fogActivate = false;
[8316]152
[8495]153    glDisable(GL_FOG);
[6772]154}
155
[8793]156/**
157 * @brief draws the fog effect
158 */
[8255]159void FogEffect::draw() const {
[6772]160
[8495]161    if (!this->fogActivate)
162        return;
[8255]163
[8793]164    // If fog is fading
165    if ( this->fogFadeInActivate || this->fogFadeOutActivate ) {
166        if ( this->fogMode == GL_LINEAR)
167            glFogf(GL_FOG_END, this->fogFadeEnd);
168        else
169            glFogf(GL_FOG_DENSITY, this->fogFadeDensity);
170    }
[8255]171}
172
[8793]173/**
174 * @brief ticks the fog effect
175 * @param dt: tick float
176 */
[8495]177void FogEffect::tick(float dt) {
[8793]178
[8495]179    if (!this->fogActivate)
180        return;
[8316]181
[8793]182    // If fog is fading in
[8495]183    if ( this->fogFadeInActivate ) {
184        this->localTimer += dt;
185
[8793]186        if ( this->fogMode == GL_LINEAR)
187          this->fogFadeEnd = 2000 * (1 - ( this->localTimer / this->fogFadeInDuration )) + this->fogEnd;
188        else
189            this->fogFadeDensity = ( this->localTimer / this->fogFadeInDuration ) * this->fogDensity;
190
191        if ( this->localTimer >= this->fogFadeInDuration )
[8495]192            this->fogFadeInActivate = false;
193    }
194
[8793]195    // If fog is fading out
[8495]196    if ( this->fogFadeOutActivate ) {
197        this->localTimer += dt;
198
[8793]199        if ( this->fogMode == GL_LINEAR)
[9235]200          this->fogFadeEnd = 2000 * ( this->localTimer / this->fogFadeOutDuration ) + this->fogEnd;
[8793]201        else
[9235]202            this->fogFadeDensity = 1 - (( this->localTimer / this->fogFadeOutDuration ) * this->fogDensity);
[8793]203
[8495]204        if ( this->localTimer >= this->fogFadeOutDuration )
205            this->deactivate();
206    }
[8255]207}
208
[8793]209/**
210 * @brief fades the fog in
211 */
[8495]212void FogEffect::fadeInFog() {
[8255]213
[8495]214    // If Fog is already fading out, stop it
215    this->fogFadeOutActivate = false;
[8255]216
[8495]217    // If Fog is already on, turn it off first
218    if (this->fogActivate)
219        this->deactivate();
[8255]220
[8495]221    // If no manual FadeIn value was set, set a default value
222    if (!this->fogFadeInDuration > 0)
[9235]223        this->fogFadeInDuration = 10;
[8495]224
225    // Reset local timer
226    this->localTimer = 0;
227
228    // Activate Fog
229    this->activate();
230
[8793]231    // set FogFadeIn activate
232    this->fogFadeInActivate = true;
[8255]233}
234
[8793]235/**
236 * @brief fades the fog out
237 */
[8495]238void FogEffect::fadeOutFog() {
239
240    // If Fog is already fading in, stop it
241    this->fogFadeInActivate = false;
242
[9235]243   
[8495]244    // If Fog is off, turn it on first
245    if (!this->fogActivate)
246        this->activate();
247
248    // If no manual FadeOut value was set, set a default value
249    if (!this->fogFadeOutDuration > 0)
[9235]250        this->fogFadeOutDuration = 10;
[8495]251
252    // set FogFadeOut activate
253    this->fogFadeOutActivate = true;
254
255    // Reset local timer
256    this->localTimer = 0;
[9235]257
258    // Restore the old cloud- and sky color
259    CloudEffect::changeCloudColor(this->oldCloudColor, this->fogFadeOutDuration);
260    CloudEffect::changeSkyColor(this->oldSkyColor, this->fogFadeOutDuration);
[6772]261}
262
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