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/* Copyright (C) 2009 Wildfire Games.
* This file is part of 0 A.D.
*
* 0 A.D. is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* 0 A.D. is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
*/
/*
* Water settings (speed, height) and texture management
*/
#ifndef INCLUDED_WATERMANAGER
#define INCLUDED_WATERMANAGER
#include "graphics/Texture.h"
#include "ps/Overlay.h"
#include "maths/Matrix3D.h"
#include "lib/ogl.h"
/**
* Class WaterManager: Maintain water settings and textures.
*
* This could be extended to provide more advanced water rendering effects
* (refractive/reflective water) in the future.
*/
class WaterManager
{
public:
CTexturePtr m_WaterTexture[60];
CTexturePtr m_NormalMap[60];
int m_WaterCurrentTex;
CColor m_WaterColor;
bool m_RenderWater;
bool m_WaterScroll;
float m_WaterHeight;
float m_WaterMaxAlpha;
float m_WaterFullDepth;
float m_WaterAlphaOffset;
float m_SWaterSpeed;
float m_TWaterSpeed;
float m_SWaterTrans;
float m_TWaterTrans;
float m_SWaterScrollCounter;
float m_TWaterScrollCounter;
double m_WaterTexTimer;
// Reflection and refraction textures for fancy water
GLuint m_ReflectionTexture;
GLuint m_RefractionTexture;
size_t m_ReflectionTextureSize;
size_t m_RefractionTextureSize;
// Model-view-projection matrices for reflected & refracted cameras
// (used to let the vertex shader do projective texturing)
CMatrix3D m_ReflectionMatrix;
CMatrix3D m_RefractionMatrix;
// Shader parameters for fancy water
CColor m_WaterTint;
float m_RepeatPeriod;
float m_Shininess;
float m_SpecularStrength;
float m_Waviness;
float m_Murkiness;
CColor m_ReflectionTint;
float m_ReflectionTintStrength;
public:
WaterManager();
~WaterManager();
/**
* LoadWaterTextures: Load water textures from within the
* progressive load framework.
*
* @return 0 if loading has completed, a value from 1 to 100 (in percent of completion)
* if more textures need to be loaded and a negative error value on failure.
*/
int LoadWaterTextures();
/**
* UnloadWaterTextures: Free any loaded water textures and reset the internal state
* so that another call to LoadWaterTextures will begin progressive loading.
*/
void UnloadWaterTextures();
/**
* Returns true if fancy water shaders will be used (i.e. the hardware is capable
* and it hasn't been configured off)
*/
bool WillRenderFancyWater();
};
#endif // INCLUDED_WATERMANAGER
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