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#pragma once
#include "common/singleton.h"
#include "graphics/engine/modelfile.h"
#include <string>
#include <vector>
#include <map>
namespace Gfx {
class CEngine;
class CModelFile;
/**
* \class CModelManager
* \brief Manager for static models
*
* The manager allows for loading models as static objects and adding
* new instances of models to the engine.
*
* The models are loaded from stanard application model directory and
* they are identified by unique file names.
*
* The models are loaded by creating (if it doesn't exist yet)
* a base engine object from the model geometry. This base object
* is then shared among all instances of this model with the instances
* being engine objects linked to the shared base object.
*
* There is also a possibility of creating a copy of model so it has
* its own and unique base engine object. This is especially useful
* for models where the geometry must be altered.
*/
class CModelManager : public CSingleton<CModelManager>
{
public:
CModelManager(CEngine* engine);
~CModelManager();
//! Loads a model from given file
bool LoadModel(const std::string& fileName, bool mirrored);
//! Adds an instance of model to the given object rank as a reference to base object
bool AddModelReference(const std::string& fileName, bool mirrored, int objRank);
//! Adds an instance of model to the given object rank as a copy (copied base object)
bool AddModelCopy(const std::string& fileName, bool mirrored, int objRank);
//! Returns true if given model is loaded
bool IsModelLoaded(const std::string& fileName, bool mirrored);
//! Returns the rank of base engine object of given loaded model
int GetModelBaseObjRank(const std::string& fileName, bool mirrored);
//! Unloads the given model
void UnloadModel(const std::string& fileName, bool mirrored);
//! Unloads all models
void UnloadAllModels();
protected:
//! Returns the height of model -- closest point to X and Z coords of \a pos
float GetHeight(std::vector<ModelTriangle>& triangles, Math::Vector pos);
//! Mirrors the model along the Z axis
void Mirror(std::vector<ModelTriangle>& triangles);
private:
struct ModelInfo
{
std::vector<ModelTriangle> triangles;
int baseObjRank;
};
struct FileInfo
{
std::string fileName;
bool mirrored;
inline FileInfo(const std::string& fileName, bool mirrored)
: fileName(fileName), mirrored(mirrored) {}
inline bool operator<(const FileInfo& other) const
{
int compare = fileName.compare(other.fileName);
if (compare < 0)
return true;
if (compare > 0)
return false;
return !mirrored && mirrored != other.mirrored;
}
};
std::map<FileInfo, ModelInfo> m_models;
CEngine* m_engine;
};
} // namespace Gfx
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