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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#ifndef _ADV_TREE_DRAWER_H_
#define _ADV_TREE_DRAWER_H_
#include <map>
#include <list>
#include "ITreeDrawer.h"
class CVertexArray;
class CGrassDrawer;
namespace Shader {
struct IProgramObject;
}
class CAdvTreeDrawer: public ITreeDrawer
{
public:
CAdvTreeDrawer();
virtual ~CAdvTreeDrawer();
void LoadTreeShaders();
void Draw(float treeDistance, bool drawReflection);
void Update();
void ResetPos(const float3& pos);
void AddTree(int type, const float3& pos, float size);
void DeleteTree(const float3& pos);
void AddFallingTree(const float3& pos, const float3& dir, int type);
void DrawGrass();
void AddGrass(const float3& pos);
void RemoveGrass(int x, int z);
void DrawShadowPass();
static void DrawTreeVertexA(CVertexArray* va, float3& ftpos, float dx, float dy);
static void DrawTreeVertex(CVertexArray* va, const float3& pos, float dx, float dy, bool enlarge = true);
static void DrawTreeVertexMid(CVertexArray* va, const float3& pos, float dx, float dy, bool enlarge = true);
static void DrawTreeVertexFar(CVertexArray* va, const float3& pos, const float3& swd, float dx, float dy, bool enlarge = true);
struct TreeStruct {
float3 pos;
int type;
};
struct FadeTree {
float3 pos;
float relDist;
float deltaY;
int type;
};
struct FallingTree {
int type;
float3 pos;
float3 dir;
float speed;
float fallPos;
};
struct TreeSquareStruct {
unsigned int dispList;
unsigned int farDispList;
int lastSeen;
int lastSeenFar;
float3 viewVector;
std::map<int, TreeStruct> trees;
};
int lastListClean;
float oldTreeDistance;
int treesX;
int treesY;
int nTrees;
TreeSquareStruct* trees;
private:
enum TreeShaderProgram {
TREE_PROGRAM_NEAR_BASIC = 0, // near-tree shader (V) without self-shadowing
TREE_PROGRAM_NEAR_SHADOW = 1, // near-tree shader (V+F) with self-shadowing
TREE_PROGRAM_DIST_SHADOW = 2, // far-tree shader (V+F) with self-shadowing
TREE_PROGRAM_LAST = 3
};
std::vector<Shader::IProgramObject*> treeShaders;
std::list<FallingTree> fallingTrees;
CGrassDrawer* grassDrawer;
};
#endif // _ADV_TREE_DRAWER_H_
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