/// <summary>
/// Draws the specified tile layer to the screen.
/// </summary>
/// <param name="spriteBatch">A spritebatch object for drawing.</param>
/// <param name="tileLayer">The TileLayer object to be drawn.</param>
/// <param name="location">The location to draw the layer.</param>
/// <param name="startIndex">The i and j indices of the first tile to draw.</param>
public void DrawLayer(SpriteBatch spriteBatch, TileLayer tileLayer, Rectangle location, Vector2 startIndex)
{
int width = location.Width / TileWidth; //The number of tiles in the i direction that fit on the screen
int height = location.Height / TileHeight; //The number of tiles in the j direction that fit on the screen
int iStartIndex = (int)startIndex.X; //The i index of the first tile to draw
int jStartIndex = (int)startIndex.Y; //The j index of the first tile to draw
if (RenderOrder == RenderOrder.RightDown)
{
for (int j = 0; j < height; j++)
{
for (int i = 0; i < width; i++)
{
Draw(spriteBatch, i, j, iStartIndex, jStartIndex, tileLayer);
}
}
}
else if (RenderOrder == RenderOrder.RightUp)
{
for (int j = height; 0 <= j; j--)
{
for (int i = 0; i < width; i++)
{
Draw(spriteBatch, i, j, iStartIndex, jStartIndex, tileLayer);
}
}
}
else if (RenderOrder == RenderOrder.LeftDown)
{
for (int j = 0; j < height; j++)
{
for (int i = 0; i < width; i++)
{
Draw(spriteBatch, i, j, iStartIndex, jStartIndex, tileLayer);
}
}
}
else if (RenderOrder == RenderOrder.LeftUp)
{
for (int j = height; 0 <= j; j--)
{
for (int i = width; 0 <= i; i--)
{
Draw(spriteBatch, i, j, iStartIndex, jStartIndex, tileLayer);
}
}
}
}
/// <summary>
/// Performs the actual drawing. Above Draw method tells it what render order to use.
/// </summary>
/// <param name="spriteBatch">A spritebatch object for drawing.</param>
/// <param name="i">The i index for drawwing in the i direction.</param>
/// <param name="j">The j index for drawwing in the i direction.</param>
/// <param name="iStartIndex">The i index of the first tile to draw.</param>
/// <param name="jStartIndex">The j index of the first tile to draw.</param>
/// <param name="layer">The layer to be drawn.</param>
private void Draw(SpriteBatch spriteBatch, int i, int j, int iStartIndex, int jStartIndex, TileLayer layer)
{
int tileOffsetX = 0;
int tileOffsetY = 0;
float opacity = 1.0f;
if (layer.Opacity != 1.0f)
{
opacity = layer.Opacity;
}
//This if statement keeps the code from throwing an out of range exception depending on where the start indices are.
//There is an explanation along with comments on how to prevent this from happening in the documentation.
if (iStartIndex + i < layer.Data.TileData.GetUpperBound(0) && jStartIndex + j < layer.Data.TileData.GetUpperBound(1) &&
iStartIndex >= 0 && jStartIndex >= 0)
{
int gid = layer.Data.GetTileData(iStartIndex + i, jStartIndex + j); //The global id of the tile in the layer at this point
//If a gid of 0 occurs, it means that for this layer there is no tile placed in that location
if (gid != 0)
{
Tileset tileset = GetTileset(gid); //Find the tileset with the tile that we want to draw
//If the tileset has drawing offsets applied
if (tileset.TileOffset != null)
{
if (tileset.TileOffset.X != 0)
{
tileOffsetX = tileset.TileOffset.X;
}
else
{
tileOffsetX = 0;
}
if (tileset.TileOffset.Y != 0)
{
tileOffsetY = tileset.TileOffset.Y;
}
else
{
tileOffsetY = 0;
}
}
Tile tile = tileset.GetTile(gid); //Find the tile in that tileset
spriteBatch.Draw(tileset.Image.Texture, new Rectangle((i * TileWidth) + tileOffsetX, (j * TileHeight) + tileOffsetY, TileWidth, TileHeight),
tile.Location, Color.White * opacity);
}
}
}
/// <summary>
/// Returns the global id of the tile at the specified postion on the screen.
/// </summary>
/// <remarks>
/// This is a powerful method that can be used in combination with your game logic to determine collisions, doors, etc.
/// </remarks>
/// <param name="tileOnScreen">The i and j indices of the tile on the screen.</param>
/// <param name="startIndex">The i and j indices of the upper left most tile in the actual layer data.</param>
/// <param name="tileLayer">The specific TileLayer to search.</param>
/// <returns>The global id of the tile at the given location.</returns>
/// <see cref="MapImporter.Tile"/>
public int GetTile(Vector2 tileOnScreen, Vector2 startIndex, TileLayer tileLayer)
{
Vector2 temp = TranslateScreenToMap(tileOnScreen, startIndex);
return(tileLayer.Data.GetTileData((int)temp.X, (int)temp.Y));
}
/// <summary>
/// Parses the given text from a JSON file and turns it into a Map object.
/// </summary>
/// <param name="fileText">The text of the JSON file.</param>
/// <returns>A new Map object.</returns>
private static Map ReadMapAsJson(string fileText)
{
JObject mapJSON = JObject.Parse(fileText);
Map m = new Map();
if (mapJSON != null)
{
m.Version = mapJSON["version"].ToString();
if (mapJSON["orientation"].ToString() == "orthogonal")
{
m.Orientation = Orientation.Orthogonal;
}
else
{
throw new Exception("The Orientation of a given Map file is not 'Orthogonal'. " +
"This version of the Importer library does not support any other types.");
}
/*else if (mapJSON["orientation"].ToString() == "isometric")
* {
* m.Orientation = Orientation.Isometric;
* }
* else if (mapJSON["orientation"].ToString() == "staggered")
* {
* m.Orientation = Orientation.Staggered;
* }*/
m.Width = (int)mapJSON["width"];
m.Height = (int)mapJSON["height"];
m.TileWidth = (int)mapJSON["tilewidth"];
m.TileHeight = (int)mapJSON["tileheight"];
if (mapJSON["backgroundcolor"] != null)
{
m.BackgroundColor = ToColor(mapJSON["backgroundcolor"].ToString());
}
if (mapJSON["renderorder"].ToString() == "right-down")
{
m.RenderOrder = RenderOrder.RightDown;
}
else if (mapJSON["renderorder"].ToString() == "right-up")
{
m.RenderOrder = RenderOrder.RightUp;
}
else if (mapJSON["renderorder"].ToString() == "left-down")
{
m.RenderOrder = RenderOrder.LeftDown;
}
else if (mapJSON["renderorder"].ToString() == "left-up")
{
m.RenderOrder = RenderOrder.LeftUp;
}
if (mapJSON["properties"] != null)
{
m.Props.PropertiesList = JsonConvert.DeserializeObject <Dictionary <string, string> >(mapJSON["properties"].ToString());
}
if (mapJSON["nextobjectid"] != null)
{
int num;
int.TryParse(mapJSON["nextobjectid"].ToString(), out num);
m.NextObjectId = num;
}
// Create and add the tilesets
int gid = 1; //Keeps track of the global ids for all tiles
JArray tilesetJson = (JArray)mapJSON["tilesets"];
if (tilesetJson != null)
{
foreach (JObject tilesets in tilesetJson)
{
Tileset tileset = new Tileset((int)tilesets["firstgid"], tilesets["name"].ToString(), (int)tilesets["tilewidth"], (int)tilesets["tileheight"],
(int)tilesets["spacing"], (int)tilesets["margin"]);
if (tilesets["tileoffset"] != null)
{
JObject offset = (JObject)tilesets["tileoffset"];
tileset.TileOffset = new TileOffset();
if (offset["x"] != null)
{
tileset.TileOffset.X = (int)offset["x"];
}
else
{
tileset.TileOffset.X = 0;
}
if (offset["y"] != null)
{
tileset.TileOffset.Y = (int)offset["x"];
}
else
{
tileset.TileOffset.Y = 0;
}
}
if (tilesets["image"] != null)
{
tileset.Image.Source = tilesets["image"].ToString();
tileset.Image.Format = Path.GetExtension(tileset.Image.Source);
if (tilesets["trans"] != null)
{
tileset.Image.Trans = ToColor(tilesets["trans"].ToString());
}
if (tilesets["imagewidth"] != null)
{
tileset.Image.Width = (int)tilesets["imagewidth"];
}
if (tilesets["imageheight"] != null)
{
tileset.Image.Height = (int)tilesets["imageheight"];
}
tileset.Source = tileset.Image.Source;
}
if (tilesets["properties"] != null)
{
tileset.Props.PropertiesList = JsonConvert.DeserializeObject <Dictionary <string, string> >(tilesets["properties"].ToString());
}
if (tilesets["terraintypes"] != null)
{
// add terraintypes
}
int id = 0; //Keeps track of the local id for the tiles
for (int y = (tileset.Margin / tileset.TileHeight); y < ((tileset.Image.Height - tileset.Margin) / tileset.TileHeight); y++)
{
for (int x = (tileset.Margin / tileset.TileWidth); x < ((tileset.Image.Width - tileset.Margin) / tileset.TileWidth); x++)
{
Tile tile = new Tile(id, gid, new Rectangle((x * tileset.TileWidth) + tileset.Spacing, (y * tileset.TileHeight) + tileset.Spacing,
tileset.TileWidth, tileset.TileHeight));
tileset.Tiles.Add(tile);
id++;
gid++;
}
}
if (tilesets["tileproperties"] != null)
{
int index = 0;
string str = tilesets["tileproperties"].ToString();
if (str.Contains(","))
{
string[] elements = str.Split(',');
foreach (string s in elements)
{
string[] i = s.Split('\"');
//Property for a tile that does not currently have any
if (i.Length > 5)
{
try
{
int.TryParse(i[1], out index);
}
catch (OverflowException)
{
Console.Write("ERROR: Class=Importer --- Int32 conversion failed --- Value=" + i[1] + "\n");
}
tileset.Tiles[index].Props = new Properties();
tileset.Tiles[index].Props.PropertiesList.Add(i[3].ToString(), i[5].ToString());
}
else
{
tileset.Tiles[index].Props.PropertiesList.Add(i[1].ToString(), i[3].ToString());
}
}
}
}
m.Tilesets.Add(tileset);
}
}
// Add the layers
int indexInLayerList = 0;
int indexInTileLayer = 0;
int indexInObjectGroup = 0;
int indexInImageLayer = 0;
foreach (JObject layerJson in mapJSON["layers"])
{
if (layerJson["type"].ToString() == "tilelayer")
{
LayerData ld = new LayerData(indexInLayerList, indexInTileLayer, LayerType.TileLayer);
m.LayerDataList.Add(ld);
indexInTileLayer++;
TileLayer l = new TileLayer(layerJson["name"].ToString(), (int)layerJson["x"], (int)layerJson["y"], (int)layerJson["width"],
(int)layerJson["height"], (float)layerJson["opacity"]);
//Put the data from the layer into the Data object
JArray dataJson = (JArray)layerJson["data"];
l.Data = new Data(l.Width, l.Height);
List <int> nums = new List <int>();
try
{
foreach (int num in dataJson)
{
nums.Add(num);
}
}
catch
{
throw new OverflowException("ERROR: Class=Importer --- Int32 conversion failed ---" + "\n");
}
int k = 0;
for (int j = 0; j < l.Height; j++)
{
for (int i = 0; i < l.Width; i++)
{
try
{
l.Data.TileData[i, j] = nums[k];
k++;
}
catch
{
throw new IndexOutOfRangeException("ERROR: Class=Importer --- Problem with indices in TileData --- Value="
+ l.Data.TileData[i, j] + "\n");
}
}
}
string s = layerJson["visible"].ToString();
if (s.Equals("true") || s.Equals("True"))
{
l.Visible = true;
}
else
{
l.Visible = false;
}
if (layerJson["properties"] != null)
{
l.Props = new Properties();
l.Props.PropertiesList = JsonConvert.DeserializeObject <Dictionary <string, string> >(layerJson["properties"].ToString());
}
m.TileLayers.Add(l); // Add the new layer to the list of Layers
}
else if (layerJson["type"].ToString() == "objectgroup")
{
LayerData ld = new LayerData(indexInLayerList, indexInObjectGroup, LayerType.ObjectGroup);
m.LayerDataList.Add(ld);
indexInObjectGroup++;
ObjectGroup objGroup = new ObjectGroup(layerJson["name"].ToString(), (int)layerJson["x"], (int)layerJson["y"],
(int)layerJson["width"], (int)layerJson["height"], (float)layerJson["opacity"]);
if (layerJson["color"] != null)
{
objGroup.Color = ToColor(layerJson["color"].ToString());
}
string str = layerJson["draworder"].ToString();
if (str.Equals("topdown"))
{
objGroup.DrawOrder = DrawOrder.TopDown;
}
else
{
objGroup.DrawOrder = DrawOrder.TopDown;
}
string s = layerJson["visible"].ToString();
if (s.Equals("true") || s.Equals("True"))
{
objGroup.Visible = true;
}
else
{
objGroup.Visible = false;
}
JArray objectJson = (JArray)layerJson["objects"];
foreach (JObject o in objectJson)
{
Object obj = new Object(o["name"].ToString(), (int)o["id"], (double)o["width"], (double)o["height"],
(double)o["x"], (double)o["y"], o["type"].ToString(), (double)o["rotation"]);
string st = o["visible"].ToString();
if (st.Equals("true") || s.Equals("True"))
{
obj.Visible = true;
}
else
{
obj.Visible = false;
}
if (o["properties"] != null)
{
obj.Props.PropertiesList = JsonConvert.DeserializeObject <Dictionary <string, string> >(o["properties"].ToString());
}
if (o["gid"] != null)
{
obj.Gid = (int)o["gid"];
}
// If the property Ellipse exists, then the object is an Ellipse
if (o["ellipse"] != null)
{
obj.ObjType = ObjectType.Ellipse;
}
else if (o["polygon"] != null)
{
obj.ObjType = ObjectType.Polygon;
JArray polygonJson = (JArray)o["polygon"];
List <Vector2> points = new List <Vector2>();
foreach (JObject point in polygonJson)
{
points.Add(new Vector2((int)point["x"], (int)point["y"]));
}
obj.Polygon = new Polygon(points);
}
else if (o["polyline"] != null)
{
obj.ObjType = ObjectType.Polyline;
JArray polylineJson = (JArray)o["polyline"];
foreach (JObject polyline in polylineJson)
{
}
}
else
{
obj.ObjType = ObjectType.Rectangle;
}
objGroup.Objects.Add(obj);
}
m.ObjectGroups.Add(objGroup);
}
else if (layerJson["type"].ToString() == "imagelayer")
{
LayerData ld = new LayerData(indexInLayerList, indexInImageLayer, LayerType.ImageLayer);
m.LayerDataList.Add(ld);
indexInImageLayer++;
}
indexInLayerList++;
}
}
return(m);
}
