#ifndef WORLDGEN_H
#define WORLDGEN_H

#include <stddef.h>
#include <stdint.h>
#include "noise.h"

#define CHUNK_SIZE 16
#define CHUNK_HEIGHT 256

enum BlockId {
	BLOCK_BEDROCK = 0,
	BLOCK_STONE = 1,
	BLOCK_DIRT = 2,
	BLOCK_GRASS = 3,
	BLOCK_WATER = 4,
	BLOCK_AIR = 5,
	BLOCK_OAK_LOG = 6,
	BLOCK_OAK_LEAVES = 7,
	BLOCK_BIRCH_LOG = 8,
	BLOCK_BIRCH_LEAVES = 9,
	BLOCK_COAL = 10
};

typedef struct {
	int chunk_x;
	int chunk_z;
	uint16_t heightmap[CHUNK_SIZE][CHUNK_SIZE];
	uint16_t blocks[CHUNK_HEIGHT][CHUNK_SIZE][CHUNK_SIZE];
} chunk_data;

typedef struct {
	simplex_noise noise;
	int sea_level;
	int world_seed;
} worldgen_ctx;

void worldgen_init(worldgen_ctx *ctx, int world_seed, int sea_level);
void worldgen_generate_chunk(worldgen_ctx *ctx, int chunk_x, int chunk_z, chunk_data *out);

#endif