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using System;
using System.Collections.Generic;
namespace V3.Map
{
/// <summary>
/// Class for holding information needed of Tilesets. Needed to draw the map.
/// </summary>
public sealed class Tileset
{
private const int CellHeight = Constants.CellHeight;
private const int CellWidth = Constants.CellWidth;
/// <summary>
/// Name of the tileset, often the filename.
/// </summary>
public string Name { get; }
/// <summary>
/// Tile width of each tile in pixel.
/// </summary>
public int TileWidth { get; }
/// <summary>
/// Tile height of each tile in pixel.
/// </summary>
public int TileHeight { get; }
/// <summary>
/// Columns of tiles of the tileset image.
/// </summary>
public int Columns { get; private set; }
/// <summary>
/// When tile is drawn, is there an offset needed on the X axis for correct display.
/// </summary>
public int OffsetX { get; private set; }
/// <summary>
///
/// When tile is drawn, is there an offset needed on the Y axis for correct display.
/// </summary>
public int OffsetY { get; private set; }
/// <summary>
/// Each tile of the tileset, represented by an integer, can hold collision data consisting of a two dimensional
/// array of boolean values. Its size is described by CollisionWidth and CollisionHeight.
/// </summary>
public Dictionary<int, bool[,]> TileCollisions { get; }
public int CollisionWidth => TileWidth / CellWidth;
public int CollisionHeight => TileHeight / CellHeight;
public Tileset(string name, int tileWidth, int tileHeight, int columns, int offsetX = 0, int offsetY = 0)
{
Name = name;
TileWidth = tileWidth;
TileHeight = tileHeight;
Columns = columns;
OffsetX = offsetX;
OffsetY = offsetY;
// TODO: Fill dictionary with TiledParser.
TileCollisions = new Dictionary<int, bool[,]>();
}
/// <summary>
/// Add an entry to the collision dictionary for the specific tile.
/// </summary>
/// <param name="tileId">The tile ID in the tileset.</param>
/// <param name="collisionData">The corresponding collision data as string of '0' and '1'.</param>
public void AddCollisionData(int tileId, string collisionData)
{
int gridWidth = CollisionWidth;
int gridHeight = CollisionHeight;
bool[,] dataArray = new bool[gridHeight, gridWidth];
for (int i = 0; i < gridHeight; i++)
{
for (int j = 0; j < gridWidth; j++)
{
try
{
dataArray[i, j] = collisionData[i * gridWidth + j] == '1';
}
catch (IndexOutOfRangeException e)
{
throw new IndexOutOfRangeException("Inconsistencies with the collision data of Tile "
+ tileId + " in tileset " + Name + ". Check corresponding tmx file or" +
"contact the programmer: Thomas.", e);
}
}
}
TileCollisions.Add(tileId, dataArray);
}
}
}
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