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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#ifndef FLYING_PIECE_H
#define FLYING_PIECE_H
#include <vector>
#include "System/float3.h"
#include "System/type2.h"
#include "System/Matrix44f.h"
#include "Rendering/GL/VBO.h"
struct S3DModel;
struct S3DModelPiece;
struct FlyingPiece {
public:
FlyingPiece(
const S3DModel* model,
const S3DModelPiece* _piece,
const CMatrix44f& _pieceMatrix,
const float3 pos,
const float3 speed,
const float2 _pieceParams,
const int2 _renderParams
);
bool Update();
void Draw(const FlyingPiece* prev) const;
void EndDraw() const;
unsigned GetDrawCallCount() const { return splitterParts.size(); }
public:
const int& GetTeam() const { return team; }
const float3& GetPos() const { return pos; }
const float& GetRadius() const { return drawRadius; }
// used for sorting to reduce gl state changes
bool operator< (const FlyingPiece& fp) const {
if (texture != fp.texture)
return (texture < fp.texture);
if (piece != fp.piece)
return (piece < fp.piece);
if (team != fp.team)
return (team < fp.team);
return false;
}
private:
struct SplitterData {
float3 speed;
float4 rotationAxisAndSpeed;
size_t vboOffset;
size_t indexCount;
};
private:
inline void InitCommon(const float3 _pos, const float3 _speed, const float _radius, int _team, int _texture);
void CheckDrawStateChange(const FlyingPiece* prev) const;
float3 GetDragFactors() const;
CMatrix44f GetMatrix(const SplitterData& cp, const float3 dragFactors) const;
private:
float3 pos0;
float3 pos;
float3 speed;
CMatrix44f pieceMatrix;
int team;
int texture;
unsigned age;
float pieceRadius;
float drawRadius;
const S3DModel* model;
const S3DModelPiece* piece;
std::vector<SplitterData> splitterParts;
};
#endif // FLYING_PIECE_H
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