[6741] | 1 | /* |
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[8495] | 2 | orxonox - the future of 3D-vertical-scrollers |
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[6741] | 3 | |
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[8495] | 4 | Copyright (C) 2004 orx |
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[6741] | 5 | |
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[8495] | 6 | This program is free software; you can redistribute it and/or modify |
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| 7 | it under the terms of the GNU General Public License as published by |
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| 8 | the Free Software Foundation; either version 2, or (at your option) |
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| 9 | any later version. |
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[6741] | 10 | |
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| 11 | ### File Specific: |
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[8495] | 12 | main-programmer: hdavid, amaechler |
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[6741] | 13 | */ |
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| 14 | |
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| 15 | #include "fog_effect.h" |
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| 16 | |
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[7193] | 17 | #include "util/loading/load_param.h" |
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| 18 | #include "util/loading/factory.h" |
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[6741] | 19 | |
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[8255] | 20 | #include "shell_command.h" |
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[6772] | 21 | |
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[8255] | 22 | SHELL_COMMAND(activate, FogEffect, activateFog); |
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| 23 | SHELL_COMMAND(deactivate, FogEffect, deactivateFog); |
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[8495] | 24 | SHELL_COMMAND(fadein, FogEffect, fadeInFog); |
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| 25 | SHELL_COMMAND(fadeout, FogEffect, fadeOutFog); |
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[8255] | 26 | |
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[8495] | 27 | // TODO: Fix fades |
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| 28 | |
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[6741] | 29 | using namespace std; |
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| 30 | |
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[6772] | 31 | CREATE_FACTORY(FogEffect, CL_FOG_EFFECT); |
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[6741] | 32 | |
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[8495] | 33 | FogEffect::FogEffect(const TiXmlElement* root) { |
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| 34 | this->setClassID(CL_FOG_EFFECT, "FogEffect"); |
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[6741] | 35 | |
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[8495] | 36 | this->init(); |
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[6772] | 37 | |
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[8495] | 38 | if (root != NULL) |
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| 39 | this->loadParams(root); |
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[7107] | 40 | |
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[8495] | 41 | if (this->fogActivate) |
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| 42 | this->activate(); |
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[6741] | 43 | } |
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| 44 | |
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| 45 | |
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[8495] | 46 | FogEffect::~FogEffect() { |
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| 47 | this->deactivate(); |
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[6980] | 48 | } |
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[6741] | 49 | |
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| 50 | |
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[8495] | 51 | void FogEffect::loadParams(const TiXmlElement* root) { |
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| 52 | WeatherEffect::loadParams(root); |
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[6741] | 53 | |
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[8495] | 54 | LoadParam(root, "mode", this, FogEffect, setFogMode); |
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| 55 | LoadParam(root, "density", this, FogEffect, setFogDensity); |
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| 56 | LoadParam(root, "range", this, FogEffect, setFogRange); |
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| 57 | LoadParam(root, "color", this, FogEffect, setFogColor); |
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| 58 | LoadParam(root, "fadeinduration", this, FogEffect, setFogFadeIn); |
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| 59 | LoadParam(root, "fadeoutduration", this, FogEffect, setFogFadeOut); |
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[8255] | 60 | |
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[8495] | 61 | LOAD_PARAM_START_CYCLE(root, element); |
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| 62 | { |
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| 63 | LoadParam_CYCLE(element, "option", this, FogEffect, setFogOption); |
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| 64 | } |
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| 65 | LOAD_PARAM_END_CYCLE(element); |
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[7810] | 66 | } |
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[6772] | 67 | |
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[8495] | 68 | void FogEffect::init() { |
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| 69 | // default values |
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| 70 | this->fogMode = GL_LINEAR; |
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[8700] | 71 | this->fogDensity = 0.005; |
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[8495] | 72 | this->fogStart = 0; |
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[8734] | 73 | this->fogEnd = 300; |
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| 74 | this->colorVector = Vector(0.6, 0.0, 0.0); |
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[8316] | 75 | |
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[8495] | 76 | // init variables |
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| 77 | this->fogFadeInDuration = 0; |
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| 78 | this->fogFadeOutDuration = 0; |
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| 79 | this->fogFadeDensity = 0; |
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[8716] | 80 | this->fogFadeEnd = 0; |
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| 81 | |
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[8495] | 82 | this->localTimer = 0; |
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| 83 | this->fogActivate = false; |
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| 84 | this->fogFadeInActivate = false; |
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| 85 | this->fogFadeOutActivate = false; |
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[8255] | 86 | |
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[6741] | 87 | } |
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| 88 | |
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| 89 | |
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[8495] | 90 | void FogEffect::activate() { |
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[8521] | 91 | PRINTF(0)( "Activating FogEffect\n"); |
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[6772] | 92 | |
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[8521] | 93 | // init fogGL |
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[8495] | 94 | GLfloat fogColor[4] = { colorVector.x, colorVector.y, colorVector.z, 1.0}; |
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| 95 | glFogi(GL_FOG_MODE, this->fogMode); |
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| 96 | glFogfv(GL_FOG_COLOR, fogColor); |
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| 97 | glHint(GL_FOG_HINT, GL_DONT_CARE); |
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| 98 | glFogf(GL_FOG_DENSITY, this->fogDensity); |
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| 99 | glFogf(GL_FOG_START, this->fogStart); |
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| 100 | glFogf(GL_FOG_END, this->fogEnd); |
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[8316] | 101 | |
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[8521] | 102 | this->fogActivate = true; |
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| 103 | |
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[8495] | 104 | glEnable(GL_FOG); |
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| 105 | |
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[6752] | 106 | } |
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| 107 | |
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| 108 | |
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[8495] | 109 | void FogEffect::deactivate() { |
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| 110 | PRINTF(0)("Deactivating FogEffect\n"); |
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[8255] | 111 | |
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[8495] | 112 | this->fogFadeInActivate = false; |
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| 113 | this->fogFadeOutActivate = false; |
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| 114 | this->fogActivate = false; |
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[8316] | 115 | |
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[8495] | 116 | glDisable(GL_FOG); |
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[8316] | 117 | |
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[6772] | 118 | } |
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| 119 | |
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[8255] | 120 | void FogEffect::draw() const { |
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[6772] | 121 | |
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[8495] | 122 | if (!this->fogActivate) |
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| 123 | return; |
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[8255] | 124 | |
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[8495] | 125 | // If Fog Fade |
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[8702] | 126 | if ( this->fogFadeInActivate || this->fogFadeOutActivate ) { |
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[8716] | 127 | if ( this->fogMode == GL_LINEAR) |
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| 128 | glFogf(GL_FOG_END, this->fogFadeEnd); |
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| 129 | else |
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| 130 | glFogf(GL_FOG_DENSITY, this->fogFadeDensity); |
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[8702] | 131 | } |
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[8255] | 132 | } |
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| 133 | |
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[8495] | 134 | void FogEffect::tick(float dt) { |
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[8521] | 135 | |
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[8495] | 136 | if (!this->fogActivate) |
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| 137 | return; |
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[8316] | 138 | |
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[8495] | 139 | if ( this->fogFadeInActivate ) { |
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| 140 | this->localTimer += dt; |
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| 141 | |
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[8716] | 142 | if ( this->fogMode == GL_LINEAR) |
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| 143 | this->fogFadeEnd = 2000 * (1 - ( this->localTimer / this->fogFadeInDuration )) + this->fogEnd; |
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| 144 | else |
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| 145 | this->fogFadeDensity = ( this->localTimer / this->fogFadeInDuration ) * this->fogDensity; |
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| 146 | |
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| 147 | if ( this->localTimer >= this->fogFadeInDuration ) |
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[8495] | 148 | this->fogFadeInActivate = false; |
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| 149 | } |
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| 150 | |
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| 151 | if ( this->fogFadeOutActivate ) { |
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| 152 | this->localTimer += dt; |
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| 153 | |
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[8716] | 154 | if ( this->fogMode == GL_LINEAR) |
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| 155 | this->fogFadeEnd = 2000 * ( this->localTimer / this->fogFadeInDuration ) + this->fogEnd; |
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| 156 | else |
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| 157 | this->fogFadeDensity = 1 - (( this->localTimer / this->fogFadeInDuration ) * this->fogDensity); |
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| 158 | |
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[8495] | 159 | if ( this->localTimer >= this->fogFadeOutDuration ) |
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| 160 | this->deactivate(); |
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| 161 | } |
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[8255] | 162 | } |
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| 163 | |
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[8495] | 164 | void FogEffect::fadeInFog() { |
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[8255] | 165 | |
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[8495] | 166 | // If Fog is already fading out, stop it |
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| 167 | this->fogFadeOutActivate = false; |
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[8255] | 168 | |
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[8495] | 169 | // If Fog is already on, turn it off first |
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| 170 | if (this->fogActivate) |
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| 171 | this->deactivate(); |
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[8255] | 172 | |
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[8495] | 173 | // If no manual FadeIn value was set, set a default value |
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| 174 | if (!this->fogFadeInDuration > 0) |
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| 175 | this->fogFadeInDuration = 20; |
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| 176 | |
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| 177 | // Reset local timer |
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| 178 | this->localTimer = 0; |
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| 179 | |
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[8716] | 180 | // Activate Fog |
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| 181 | this->activate(); |
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| 182 | |
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[8495] | 183 | // set FogFadeIn activate |
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| 184 | this->fogFadeInActivate = true; |
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| 185 | |
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[8255] | 186 | } |
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| 187 | |
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| 188 | |
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[8495] | 189 | void FogEffect::fadeOutFog() { |
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| 190 | |
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| 191 | // If Fog is already fading in, stop it |
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| 192 | this->fogFadeInActivate = false; |
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| 193 | |
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| 194 | // If Fog is off, turn it on first |
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| 195 | if (!this->fogActivate) |
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| 196 | this->activate(); |
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| 197 | |
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| 198 | // If no manual FadeOut value was set, set a default value |
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| 199 | if (!this->fogFadeOutDuration > 0) |
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| 200 | this->fogFadeOutDuration = 20; |
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| 201 | |
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| 202 | // set FogFadeOut activate |
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| 203 | this->fogFadeOutActivate = true; |
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| 204 | |
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| 205 | // Reset local timer |
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| 206 | this->localTimer = 0; |
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| 207 | |
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[6772] | 208 | } |
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| 209 | |
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