#ifndef CHUNK_H

#define CHUNK_H

#include "common.h"

#include "tree.h"

#define CHUNK_WIDTH 10

#define CHUNK_HEIGHT 2

#define CHUNK_GROUND_SUBDIVISIONS 3

#define CHUNK_GROUND_POINTS ((1 << CHUNK_GROUND_SUBDIVISIONS) + 1)

#define CHUNK_MAX_TREES 1

typedef struct {

  int index;

  int seed;

  double x, y;

  double width;

  double dy;

  double ground[CHUNK_GROUND_POINTS];

  int treeCount;

  Tree trees[CHUNK_MAX_TREES];

} Chunk;

void chunkGenerate(Chunk *c, int rootSeed, const Chunk *base, int offset);

double chunkGroundLevel(const Chunk *c, double x);

void chunkDraw(const Chunk *c, double time, int flags);

#endif