/**
 * Copyright (c) 2021 Dominic Masters
 * 
 * This software is released under the MIT License.
 * https://opensource.org/licenses/MIT
 */

#include "chunk.h"

void chunkCreate(chunk_t *chunk) {
  int32_t count, x, y, z, i;

  count = CHUNK_WIDTH * CHUNK_HEIGHT * CHUNK_DEPTH;
  chunk->primitive = primitiveCreate(count * 4, count * 6);

  i = 0;
  for(z = 0; z < CHUNK_DEPTH; z++) {
    for(y = 0; y < CHUNK_HEIGHT; y++) {
      for(x = 0; x < CHUNK_WIDTH; x++) {
        quadBuffer(chunk->primitive,
            x,   y, 0, 0,
          x+1, y+1, 1, 1,
          i*4, i*6
        );
        i++;
      }
    }
  }
}

void chunkRender(chunk_t *chunk, shader_t *shader) {
  float x, y, z;
  x = (chunk->x * CHUNK_WIDTH);
  y = (chunk->y * CHUNK_HEIGHT);
  z = (chunk->z * CHUNK_DEPTH);

  shaderUsePosition(shader, x*2, y*2, z*2, 0, 0, 0);
  primitiveDraw(chunk->primitive, 0, chunk->primitive->indiceCount);
}

void chunkLoad(chunk_t *chunk, int32_t x, int32_t y, int32_t z) {

}

void chunkUnload(chunk_t *chunk) {
  
}