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

#pragma once
#include "../libs.h"

/** Division of a texture */
typedef struct {
  float x0, y0, x1, y1;
} tilesetdiv_t;

/** Definition of a Tileset */
typedef struct {
  /** Count of X/Y divisions */
  int32_t columns, rows;

  /** Size of each divison (in pixels) */
  float divX, divY;

  /** Count of divisions (unused) */
  int32_t count;

  /** Division information */
  tilesetdiv_t *divisions;
} tileset_t;

/**
 * Create a tileset. Tilesets will be pre-divided to save performance later.
 * 
 * @param tileset Tileset to init into.
 * @param columns Count of columns.
 * @param rows Count of rows.
 * @param width Width of the tileset.
 * @param height Height of the tileset.
 * @param gapX Space between each column.
 * @param gapY Space between each row.
 * @param borderX Space around the edge of the tileset.
 * @param borderY Space around the edge of the tileset.
 */
void tilesetInit(tileset_t *tileset,
  int32_t columns, int32_t rows,
  int32_t width, int32_t height,
  int32_t gapX, int32_t gapY,
  int32_t borderX, int32_t borderY
);

/**
 * Retreive the division for a given tileset coordinate.
 * 
 * @param tileset Tileset to retreive from.
 * @param column X axis of the tileset.
 * @param row Y axis of the tileset.
 * @returns The Tileset division.
 */
tilesetdiv_t tilesetGetDivision(tileset_t *tileset,int32_t column, int32_t row);

/**
 * Cleans a previously created tileset
 * 
 * @param tileset Cleanup the tileset.
 */
void tilesetDispose(tileset_t *tileset);