/// <summary>
/// Default constructor requires a name, the bounds of the object, the orientation of projection, and a collection of properties assigned to the object
/// </summary>
/// <param name="name"></param>
/// <param name="bounds"></param>
/// <param name="orientation"></param>
/// <param name="properties"></param>
public MapObject(string name, Rectangle bounds, Orientation orientation, PropertyCollection properties)
{
Name = name;
Bounds = bounds;
Orientation = orientation;
Properties = properties;
}
public ObjectContent(XmlNode node)
{
if (node.Attributes[AttributeNames.MapObjectAttributes.Name] != null)
Name = node.Attributes[AttributeNames.MapObjectAttributes.Name].Value;
if (node.Attributes[AttributeNames.MapObjectAttributes.Type] != null)
Type = node.Attributes[AttributeNames.MapObjectAttributes.Type].Value;
if (node[AttributeNames.MapObjectAttributes.Properties] != null)
properties = new PropertyCollection(node[AttributeNames.MapObjectAttributes.Properties]);
int x = 0, y = 0, width = 0, height = 0;
if (node.Attributes[AttributeNames.MapObjectAttributes.X] != null)
x = Utilities.TryToParseInt(node.Attributes[AttributeNames.MapObjectAttributes.X].Value);
if (node.Attributes[AttributeNames.MapObjectAttributes.Y] != null)
y = Utilities.TryToParseInt(node.Attributes[AttributeNames.MapObjectAttributes.Y].Value);
if (node.Attributes[AttributeNames.MapObjectAttributes.Width] != null)
width = Utilities.TryToParseInt(node.Attributes[AttributeNames.MapObjectAttributes.Width].Value);
if (node.Attributes[AttributeNames.MapObjectAttributes.Height] != null)
height = Utilities.TryToParseInt(node.Attributes[AttributeNames.MapObjectAttributes.Height].Value);
Bounds = new Rectangle(x, y, width, height);
string objectPoints = String.Empty;
if (node.Attributes[AttributeNames.MapObjectAttributes.GID] != null)
{
objectType = MapObjectType.Tile;
GID = Utilities.TryToParseInt(node.Attributes[AttributeNames.MapObjectAttributes.GID].Value);
}
else if (node.Attributes[AttributeNames.MapObjectAttributes.Polygon] != null)
{
objectType = MapObjectType.Polygon;
objectPoints = node.Attributes[AttributeNames.MapObjectAttributes.Polygon].Value;
}
else if (node.Attributes[AttributeNames.MapObjectAttributes.Polyline] != null)
{
objectType = MapObjectType.Polyline;
objectPoints = node.Attributes[AttributeNames.MapObjectAttributes.Polyline].Value;
}
if(!String.IsNullOrEmpty(objectPoints))
{
string[] splitPoints = objectPoints.Split(' ');
foreach(string splitPoint in splitPoints)
{
string[] coordinates = splitPoint.Split(',');
float coordinateX = 0f, coordinateY = 0f;
float.TryParse(coordinates[0], NumberStyles.None, CultureInfo.InvariantCulture, out coordinateX);
float.TryParse(coordinates[1], NumberStyles.None, CultureInfo.InvariantCulture, out coordinateY);
points.Add(new Point((int)x, (int)y));
}
}
}
/// <summary>
/// Main constructor used to instantiate a tile when data is known at import
/// </summary>
/// <param name="texture"></param>
/// <param name="source"></param>
/// <param name="width"></param>
/// <param name="height"></param>
public Tile(Texture texture, Rectangle source, int width, int height)
{
ID = Guid.NewGuid();
IsEmpty = false;
Texture = texture;
SourceTextureBounds = source;
Width = width;
Height = height;
}
public TileContent(Rectangle source, PropertyCollection properties)
{
SourceTextureBounds = source;
this.properties = properties;
}
internal void RenderTexture(IntPtr textureHandle, float positionX, float positionY, Rectangle source)
{
Debug.Assert(textureHandle != IntPtr.Zero, Errors.E_TEXTURE_NULL);
int width = source.Width;
int height = source.Height;
// SDL only accepts integer positions (x,y) in the rendering Rect
SDL.SDL_Rect destinationRectangle = new SDL.SDL_Rect() { x = (int)positionX, y = (int)positionY, w = width, h = height };
SDL.SDL_Rect sourceRectangle = new SDL.SDL_Rect() { x = source.X, y = source.Y, w = width, h = height };
int result = SDL.SDL_RenderCopy(Handle, textureHandle, ref sourceRectangle, ref destinationRectangle);
if (Utilities.IsError(result))
{
throw new Exception(Utilities.GetErrorMessage("SDL_RenderCopy"));
}
}
internal void RenderTexture(IntPtr textureHandle, float positionX, float positionY, int sourceWidth, int sourceHeight)
{
Rectangle source = new Rectangle(0, 0, sourceWidth, sourceHeight);
RenderTexture(textureHandle, positionX, positionY, source);
}
/// <summary>
/// Based on a passed tile index, create a Tile by looking up which TileSet it belongs to, assign the proper TilSet texture,
/// and find the bounds of the rectangle that encompasses the correct tile texture within the total tileset texture.
/// </summary>
/// <param name="tileIndex">Index of the tile (GID) within the map file</param>
/// <param name="tileSets">Enumerable list of tilesets used to find out which tileset a tile belongs to</param>
/// <param name="tileLayerType"></param>
/// <returns></returns>
private Tile CreateTile(int tileIndex, IEnumerable<TileSetContent> tileSets)
{
if (tileSets == null) throw new ArgumentNullException("tileSets");
Tile tile = new Tile();
// we don't want to look up tiles with ID 0 in tile sets because Tiled Map Editor treats ID 0 as an empty tile
if (tileIndex > Tile.EmptyTileID)
{
Texture tileSetTexture = null;
Rectangle source = new Rectangle();
foreach (TileSetContent tileSet in tileSets)
{
if (tileIndex - tileSet.FirstGID < tileSet.Tiles.Count)
{
tileSetTexture = tileSet.Texture;
source = tileSet.Tiles[tileIndex - tileSet.FirstGID].SourceTextureBounds;
break;
}
}
tile = new Tile(tileSetTexture, source, TileWidth, TileHeight);
}
return tile;
}
public void Draw(float x, float y, Rectangle sourceBounds)
{
Draw((int)x, (int)y, sourceBounds);
}
public void Draw(int x, int y, Rectangle sourceBounds)
{
Assert.IsNotNull(Handle, Errors.E_TEXTURE_NULL);
Assert.IsNotNull(renderer, Errors.E_RENDERER_NULL);
renderer.RenderTexture(Handle, x, y, sourceBounds);
}
/// <summary>
/// Determines if two rectangles intersect.
/// </summary>
/// <param name="rectangle">Rectangle.</param>
public bool Intersects(Rectangle rectangle)
{
return rectangle.Left <= Right && Left <= rectangle.Right && rectangle.Top <= Bottom && Top <= rectangle.Bottom;
}
public Vector GetIntersectionDepth(Rectangle rectangle)
{
// Calculate half sizes.
float halfWidthA = this.Width / 2.0f;
float halfHeightA = this.Height / 2.0f;
float halfWidthB = rectangle.Width / 2.0f;
float halfHeightB = rectangle.Height / 2.0f;
// Calculate centers.
Vector centerA = new Vector(this.Left + halfWidthA, this.Top + halfHeightA);
Vector centerB = new Vector(rectangle.Left + halfWidthB, rectangle.Top + halfHeightB);
// Calculate current and minimum-non-intersecting distances between centers.
float distanceX = centerA.X - centerB.X;
float distanceY = centerA.Y - centerB.Y;
float minDistanceX = halfWidthA + halfWidthB;
float minDistanceY = halfHeightA + halfHeightB;
// If we are not intersecting at all, return (0, 0).
if (Math.Abs(distanceX) >= minDistanceX || Math.Abs(distanceY) >= minDistanceY)
return Vector.Zero;
// Calculate and return intersection depths.
float depthX = distanceX > 0 ? minDistanceX - distanceX : -minDistanceX - distanceX;
float depthY = distanceY > 0 ? minDistanceY - distanceY : -minDistanceY - distanceY;
return new Vector(depthX, depthY);
}
public bool Contains(Rectangle rectangle)
{
if (Left <= rectangle.Left && Right >= rectangle.Right && Top <= rectangle.Top && Bottom >= rectangle.Bottom)
return true;
else
return false;
}
private void GenerateTileSourceRectangles()
{
// process the tilesets, calculate tiles to fit in each set, calculate source rectangles
foreach (TileSetContent tileSet in tileSets)
{
int imageWidth = tileSet.Texture.Width;
int imageHeight = tileSet.Texture.Height;
imageWidth -= tileSet.Margin * 2;
imageHeight -= tileSet.Margin * 2;
int tileCountX = 0;
while ((tileCountX + 1) * tileSet.TileWidth <= imageWidth)
{
tileCountX++;
imageWidth -= tileSet.Spacing;
}
int tileCountY = 0;
while ((tileCountY + 1) * tileSet.TileHeight <= imageHeight)
{
tileCountY++;
imageHeight -= tileSet.Spacing;
}
for (int y = 0; y < tileCountY; y++)
{
for (int x = 0; x < tileCountX; x++)
{
int rx = tileSet.Margin + x * (tileSet.TileWidth + tileSet.Spacing);
int ry = tileSet.Margin + y * (tileSet.TileHeight + tileSet.Spacing);
Rectangle source = new Rectangle(rx, ry, tileSet.TileWidth, tileSet.TileHeight);
int index = tileSet.FirstGID + (y * tileCountX + x);
PropertyCollection tileProperties = new PropertyCollection();
if (tileSet.TileProperties.ContainsKey(index))
tileProperties = tileSet.TileProperties[index];
TileContent tile = new TileContent(source, tileProperties);
tileSet.Tiles.Add(tile);
}
}
}
}
