/**
 * Copyright (c) 2026 Dominic Masters
 * 
 * This software is released under the MIT License.
 * https://opensource.org/licenses/MIT
 */

#include "tileset.h"
#include "assert/assert.h"
#include "util/string.h"

void tilesetTileGetUV(
  const tileset_t *tileset,
  const uint16_t tileIndex,
  vec4 outUV
) {
  const uint16_t column = tileIndex % tileset->columns;
  const uint16_t row = tileIndex / tileset->columns;
  tilesetPositionGetUV(tileset, column, row, outUV);
}

void tilesetPositionGetUV(
  const tileset_t *tileset,
  const uint16_t column,
  const uint16_t row,
  vec4 outUV
) {
  assertNotNull(tileset, "Tileset cannot be NULL");
  assertTrue(column < tileset->columns, "Column index out of bounds");
  assertTrue(row < tileset->rows, "Row index out of bounds");

  outUV[0] = ((float_t)column) * tileset->uv[0];
  outUV[1] = ((float_t)row) * tileset->uv[1];
  outUV[2] = outUV[0] + tileset->uv[0];
  outUV[3] = outUV[1] + tileset->uv[1];
}