public static Level readFrom(String fileName)
{
if (fileName == null || fileName.Length == 0)
{
return(null);
}
hasAnyLevelBeenLoaded = true;
Level level;
LevelType type = DEFAULT_LEVEL_TYPE;
int gridSize = DEFAULT_GRID_SIZE;
Point dimensions = Point.Zero;
int numberOfCollisionEdges = 0;
int numberOfObjects = 0;
StreamReader input = null;
try {
input = File.OpenText(fileName);
}
catch (Exception) {
return(null);
}
String data;
// read initial header
while ((data = input.ReadLine()) != null)
{
data = data.Trim();
if (data.Length == 0)
{
continue;
}
// read and verify level type
String[] versionHeader = data.Split(':');
if (versionHeader.Length != 2)
{
return(null);
}
String typeString = versionHeader[0] = versionHeader[0].Trim();
if (typeString.Equals(CARTESIAN_TYPE, StringComparison.OrdinalIgnoreCase))
{
type = LevelType.Cartesian;
}
else if (typeString.Equals(ISOMETRIC_TYPE, StringComparison.OrdinalIgnoreCase))
{
type = LevelType.Isometric;
}
else
{
return(null);
}
// read and verify level version
String versionString = versionHeader[1].Trim();
String[] versionData = versionString.Split(' ');
if (versionData.Length != 2)
{
return(null);
}
if (!versionData[0].Equals("Version", StringComparison.OrdinalIgnoreCase))
{
return(null);
}
try {
float version = float.Parse(versionData[1]);
if (version != LEVEL_VERSION)
{
return(null);
}
}
catch (Exception) { return(null); }
break;
}
// read grid size
while ((data = input.ReadLine()) != null)
{
data = data.Trim();
if (data.Length == 0)
{
continue;
}
// read and store grid size
String[] gridHeader = data.Split(':');
if (gridHeader.Length != 2)
{
return(null);
}
if (!gridHeader[0].Trim().Equals("Grid Size", StringComparison.OrdinalIgnoreCase))
{
return(null);
}
try {
gridSize = Int32.Parse(gridHeader[1].Trim());
}
catch (Exception) { return(null); }
break;
}
// read map dimensions
while ((data = input.ReadLine()) != null)
{
data = data.Trim();
if (data.Length == 0)
{
continue;
}
// read and store grid size
String[] dimensionHeader = data.Split(':');
if (dimensionHeader.Length != 2)
{
return(null);
}
if (!dimensionHeader[0].Trim().Equals("Dimensions", StringComparison.OrdinalIgnoreCase))
{
return(null);
}
String[] dimensionData = dimensionHeader[1].Split(',');
if (dimensionData.Length != 2)
{
return(null);
}
try {
dimensions.X = Int32.Parse(dimensionData[0].Trim());
dimensions.Y = Int32.Parse(dimensionData[1].Trim());
}
catch (Exception) { return(null); }
break;
}
// read collision data header
while ((data = input.ReadLine()) != null)
{
data = data.Trim();
if (data.Length == 0)
{
continue;
}
// verify header and parse number of collision edges
String[] collisionHeader = data.Split(':');
if (collisionHeader.Length != 2)
{
return(null);
}
if (!collisionHeader[0].Trim().Equals("Collision Edges", StringComparison.OrdinalIgnoreCase))
{
return(null);
}
try {
numberOfCollisionEdges = Int32.Parse(collisionHeader[1].Trim());
}
catch (Exception) { return(null); }
break;
}
level = new Level(type, gridSize, dimensions);
level.collisionData = Graph.parseFrom(input, numberOfCollisionEdges);
// read objects header and number of objects
while ((data = input.ReadLine()) != null)
{
String objectsHeader = data.Trim();
if (objectsHeader.Length == 0)
{
continue;
}
// separate header data
String[] headerData = objectsHeader.Split(':');
if (headerData.Length != 2)
{
return(null);
}
// verify the objects header
if (!headerData[0].Trim().Equals("Objects", StringComparison.OrdinalIgnoreCase))
{
return(null);
}
// parse the number of objects
try {
numberOfObjects = Int32.Parse(headerData[1].Trim());
}
catch (Exception) { return(null); }
break;
}
// load the objects
int currentObject = 0;
while (currentObject < numberOfObjects)
{
data = input.ReadLine();
String objectHeader = data.Trim();
if (objectHeader.Length == 0)
{
continue;
}
// parse object type
String objectType;
if (objectHeader[objectHeader.Length - 1] == ':')
{
objectType = objectHeader.Substring(0, objectHeader.Length - 1);
}
else
{
return(null);
}
// parse the object based on its type
GameObject newObject = null;
if (objectType.Equals("Static Object", StringComparison.OrdinalIgnoreCase))
{
newObject = StaticObject.parseFrom(input, Firecracker.spriteSheets);
}
else if (objectType.Equals("Game Tile", StringComparison.OrdinalIgnoreCase))
{
newObject = GameTile.parseFrom(input, Firecracker.spriteSheets);
}
else if (objectType.Equals("NPCObject", StringComparison.OrdinalIgnoreCase))
{
newObject = NPCObject.parseFrom(input, Firecracker.spriteSheets);
}
else if (objectType.Equals("Player", StringComparison.OrdinalIgnoreCase))
{
newObject = Player.parseFrom(input, Firecracker.spriteSheets);
}
else if (objectType.Equals("Settlement", StringComparison.OrdinalIgnoreCase))
{
newObject = Settlement.parseFrom(input, Firecracker.spriteSheets);
}
else if (objectType.Equals("Terrain", StringComparison.OrdinalIgnoreCase))
{
newObject = Terrain.parseFrom(input, Firecracker.spriteSheets);
}
// verify that the object was successfully parsed
if (newObject != null)
{
currentObject++;
level.addObject(newObject);
}
else
{
return(null);
}
}
input.Close();
PopupNotification.instance.ShowNotification("Objective", "Destroy all of the humans before they multiply and acquire\n" +
"the technology to leave the island. The more you destroy,\n" +
"the more devastating abilities you will be able to use.", false);
return(level);
}
public static StaticObject parseFrom(StreamReader input, SpriteSheetCollection spriteSheets)
{
if (input == null || spriteSheets == null)
{
return(null);
}
// get the object's position
Variable position = Variable.parseFrom(input.ReadLine());
if (position == null || !position.id.Equals("Position", StringComparison.OrdinalIgnoreCase))
{
return(null);
}
// Get the layer depth of this sprite
Variable layerDepth = Variable.parseFrom(input.ReadLine());
if (layerDepth == null || !layerDepth.id.Equals("LayerDepth", StringComparison.OrdinalIgnoreCase))
{
return(null);
}
// get the sprite's name
Variable spriteName = Variable.parseFrom(input.ReadLine());
if (spriteName == null || !spriteName.id.Equals("Sprite Name", StringComparison.OrdinalIgnoreCase))
{
return(null);
}
// get the name of the spritesheet in which the sprite is found
Variable spriteSheetName = Variable.parseFrom(input.ReadLine());
if (spriteSheetName == null || !spriteSheetName.id.Equals("SpriteSheet Name", StringComparison.OrdinalIgnoreCase))
{
return(null);
}
// get the object's sprite
SpriteSheet spriteSheet = spriteSheets.getSpriteSheet(spriteSheetName.value);
if (spriteSheet == null)
{
return(null);
}
Sprite sprite = spriteSheet.getSprite(spriteName.value);
if (sprite == null)
{
return(null);
}
// parse the sprite's position
String[] positionData = position.value.Split(',');
if (positionData.Length != 2)
{
return(null);
}
Vector2 newPosition;
try {
newPosition.X = Int32.Parse(positionData[0]);
newPosition.Y = Int32.Parse(positionData[1]);
}
catch (Exception) { return(null); }
// create the object
StaticObject newObject = new StaticObject(newPosition, sprite);
newObject.sprite.m_SpriteDepth = float.Parse(layerDepth.value);
newObject.updateInitialValues();
return(newObject);
}