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#ifndef TERRAIN_H
#define TERRAIN_H
#include "vector.h"
#include <list>
#include <set>
class Terrain {
private:
std::set<std::pair<int, int> > chunk_indices;
public:
struct Chunk;
struct Node {
Chunk *chunk;
float x, y;
float vertex_array[12];
Node(Chunk *chunk, float x, float y);
virtual ~Node();
float distance(float px, float pz);
void fill();
void draw_grid();
void draw_normal();
float get_height(float px, float py);
Vector3 get_normal(int index);
};
struct Chunk {
Terrain *terrain;
Node **nodes;
float x, y, width, height;
int h_width, h_height;
float *heights;
Vector3 *normals;
size_t buf_size;
unsigned int vbo_object;
unsigned int node_count;
unsigned int vertices;
float init_time;
Chunk(Terrain *tree, float x, float y, float width, float height);
~Chunk();
float distance(float px, float pz);
void make_vbo();
Node *find(float x, float y);
void calc_normals();
};
static const int chunk_size = 32;
std::list<Chunk*> chunks;
Terrain();
virtual ~Terrain();
float *generate_heights(int x, int y, int width, int height);
float *get_chunk(int x, int y, int width, int height);
bool has_chunk(int x, int y);
void save_chunk(float *chunk, int x, int y, int width, int height);
float *load_chunk(int x, int y, int width, int height);
void raise(float x, float z, float radius, float focus, float strength, bool up = true);
void update(float x, float z);
Chunk *find_chunk(float x, float y);
Node *find(float x, float y);
};
#endif
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