private StringWriter BuildWavefrontStringForTileObjectMesh(TmxMesh mesh)
{
Logger.WriteVerbose("Building mesh obj file for tile: '{0}.obj'", mesh.UniqueMeshName);
GenericListDatabase <Vertex3> vertexDatabase = new GenericListDatabase <Vertex3>();
HashIndexOf <PointF> uvDatabase = new HashIndexOf <PointF>();
StringBuilder faces = new StringBuilder();
// Get the single tile associated with this mesh
TmxTile tmxTile = this.tmxMap.Tiles[mesh.TileIds[0]];
var vertices = CalculateFaceVertices_TileObject(tmxTile.TileSize, tmxTile.Offset);
var uvs = CalculateFaceTextureCoordinates(tmxTile, false, false, false);
// TileObjects have zero depth on their vertices. Their GameObject parent will set depth.
FaceVertices faceVertices = new FaceVertices {
Vertices = vertices, Depth_z = 0.0f
};
// Adds vertices and uvs to the database as we build the face strings
string v0 = String.Format("{0}/{1}/1", vertexDatabase.AddToDatabase(faceVertices.V0) + 1, uvDatabase.Add(uvs[0]) + 1);
string v1 = String.Format("{0}/{1}/1", vertexDatabase.AddToDatabase(faceVertices.V1) + 1, uvDatabase.Add(uvs[1]) + 1);
string v2 = String.Format("{0}/{1}/1", vertexDatabase.AddToDatabase(faceVertices.V2) + 1, uvDatabase.Add(uvs[2]) + 1);
string v3 = String.Format("{0}/{1}/1", vertexDatabase.AddToDatabase(faceVertices.V3) + 1, uvDatabase.Add(uvs[3]) + 1);
faces.AppendFormat("f {0} {1} {2} {3}\n", v0, v1, v2, v3);
// We have all the data we need to build the wavefront file format
return(CreateWavefrontWriter(mesh, vertexDatabase, uvDatabase, faces));
}
private StringWriter BuildWavefrontStringForLayerMesh(TmxLayer layer, TmxMesh mesh, IEnumerable <int> horizontalRange, IEnumerable <int> verticalRange)
{
Logger.WriteVerbose("Building mesh obj file for '{0}'", mesh.UniqueMeshName);
GenericListDatabase <Vertex3> vertexDatabase = new GenericListDatabase <Vertex3>();
HashIndexOf <PointF> uvDatabase = new HashIndexOf <PointF>();
StringBuilder faces = new StringBuilder();
foreach (int y in verticalRange)
{
foreach (int x in horizontalRange)
{
int tileIndex = layer.GetTileIndex(x, y);
uint tileId = mesh.GetTileIdAt(tileIndex);
// Skip blank tiles
if (tileId == 0)
{
continue;
}
TmxTile tile = this.tmxMap.Tiles[TmxMath.GetTileIdWithoutFlags(tileId)];
// What are the vertex and texture coorindates of this face on the mesh?
var position = this.tmxMap.GetMapPositionAt(x, y, tile);
var vertices = CalculateFaceVertices(position, tile.TileSize);
// If we're using depth shaders then we'll need to set a depth value of this face
float depth_z = 0.0f;
if (Tiled2Unity.Settings.DepthBufferEnabled)
{
depth_z = CalculateFaceDepth(position.Y + tmxMap.TileHeight, tmxMap.MapSizeInPixels.Height);
}
FaceVertices faceVertices = new FaceVertices {
Vertices = vertices, Depth_z = depth_z
};
// Is the tile being flipped or rotated (needed for texture cooridinates)
bool flipDiagonal = TmxMath.IsTileFlippedDiagonally(tileId);
bool flipHorizontal = TmxMath.IsTileFlippedHorizontally(tileId);
bool flipVertical = TmxMath.IsTileFlippedVertically(tileId);
var uvs = CalculateFaceTextureCoordinates(tile, flipDiagonal, flipHorizontal, flipVertical);
// Adds vertices and uvs to the database as we build the face strings
string v0 = String.Format("{0}/{1}/1", vertexDatabase.AddToDatabase(faceVertices.V0) + 1, uvDatabase.Add(uvs[0]) + 1);
string v1 = String.Format("{0}/{1}/1", vertexDatabase.AddToDatabase(faceVertices.V1) + 1, uvDatabase.Add(uvs[1]) + 1);
string v2 = String.Format("{0}/{1}/1", vertexDatabase.AddToDatabase(faceVertices.V2) + 1, uvDatabase.Add(uvs[2]) + 1);
string v3 = String.Format("{0}/{1}/1", vertexDatabase.AddToDatabase(faceVertices.V3) + 1, uvDatabase.Add(uvs[3]) + 1);
faces.AppendFormat("f {0} {1} {2} {3}\n", v0, v1, v2, v3);
}
}
// We have all the data we need to build the wavefront file format
return(CreateWavefrontWriter(mesh, vertexDatabase, uvDatabase, faces));
}
private StringWriter CreateWavefrontWriter(TmxMesh mesh, GenericListDatabase <Vertex3> vertexDatabase, HashIndexOf <PointF> uvDatabase, StringBuilder faces)
{
StringWriter wavefront = new StringWriter();
wavefront.WriteLine("# Tiled2Unity generated file. Do not modify by hand.");
wavefront.WriteLine("# Wavefront file for '{0}.obj'", mesh.UniqueMeshName);
wavefront.WriteLine();
wavefront.WriteLine("# Vertices (Count = {0})", vertexDatabase.List.Count());
foreach (var v in vertexDatabase.List)
{
wavefront.WriteLine("v {0} {1} {2}", v.X, v.Y, v.Z);
}
wavefront.WriteLine();
wavefront.WriteLine("# Texture cooridinates (Count = {0})", uvDatabase.List.Count());
foreach (var uv in uvDatabase.List)
{
wavefront.WriteLine("vt {0} {1}", uv.X, uv.Y);
}
wavefront.WriteLine();
// Write the one indexed normal
wavefront.WriteLine("# Normal");
wavefront.WriteLine("vn 0 0 -1");
wavefront.WriteLine();
// Now we can copy over the string used to build the databases
wavefront.WriteLine("# Mesh description");
wavefront.WriteLine("g {0}", mesh.UniqueMeshName);
wavefront.WriteLine();
wavefront.WriteLine("# Faces");
wavefront.WriteLine(faces.ToString());
return(wavefront);
}
// Creates the text for a Wavefront OBJ file for the TmxMap
private StringWriter BuildObjString()
{
IGenericDatabase <Vertex3> vertexDatabase = new HashIndexOf <Vertex3>();
HashIndexOf <PointF> uvDatabase = new HashIndexOf <PointF>();
// Are we allowing vertices to be written too (advanced option)
if (Tiled2Unity.Settings.WriteableVertices)
{
// Replace vertex database with class that ensure each vertex (even ones with similar values) are unique
Logger.WriteLine("Using writeable-vertices. This will increase the size of the mesh but will allow you mutate vertices through scripting. This is an advanced feature.");
vertexDatabase = new GenericListDatabase <Vertex3>();
}
float mapLogicalHeight = this.tmxMap.MapSizeInPixels().Height;
// Go through every face of every mesh of every visible layer and collect vertex and texture coordinate indices as you go
int groupCount = 0;
StringBuilder faceBuilder = new StringBuilder();
foreach (var layer in this.tmxMap.Layers)
{
if (layer.Visible != true)
{
continue;
}
if (layer.Ignore == TmxLayer.IgnoreSettings.Visual)
{
continue;
}
// We're going to use this layer
++groupCount;
// Enumerate over the tiles in the direction given by the draw order of the map
var verticalRange = (this.tmxMap.DrawOrderVertical == 1) ? Enumerable.Range(0, layer.Height) : Enumerable.Range(0, layer.Height).Reverse();
var horizontalRange = (this.tmxMap.DrawOrderHorizontal == 1) ? Enumerable.Range(0, layer.Width) : Enumerable.Range(0, layer.Width).Reverse();
foreach (TmxMesh mesh in layer.Meshes)
{
Logger.WriteLine("Writing '{0}' mesh group", mesh.UniqueMeshName);
faceBuilder.AppendFormat("\ng {0}\n", mesh.UniqueMeshName);
foreach (int y in verticalRange)
{
foreach (int x in horizontalRange)
{
int tileIndex = layer.GetTileIndex(x, y);
uint tileId = mesh.GetTileIdAt(tileIndex);
// Skip blank tiles
if (tileId == 0)
{
continue;
}
TmxTile tile = this.tmxMap.Tiles[TmxMath.GetTileIdWithoutFlags(tileId)];
// What are the vertex and texture coorindates of this face on the mesh?
var position = this.tmxMap.GetMapPositionAt(x, y);
var vertices = CalculateFaceVertices(position, tile.TileSize, this.tmxMap.TileHeight, tile.Offset);
// If we're using depth shaders then we'll need to set a depth value of this face
float depth_z = 0.0f;
if (Tiled2Unity.Settings.DepthBufferEnabled)
{
depth_z = CalculateFaceDepth(position.Y, mapLogicalHeight);
}
FaceVertices faceVertices = new FaceVertices {
Vertices = vertices, Depth_z = depth_z
};
// Is the tile being flipped or rotated (needed for texture cooridinates)
bool flipDiagonal = TmxMath.IsTileFlippedDiagonally(tileId);
bool flipHorizontal = TmxMath.IsTileFlippedHorizontally(tileId);
bool flipVertical = TmxMath.IsTileFlippedVertically(tileId);
var uvs = CalculateFaceTextureCoordinates(tile, flipDiagonal, flipHorizontal, flipVertical);
// Adds vertices and uvs to the database as we build the face strings
string v0 = String.Format("{0}/{1}/1", vertexDatabase.AddToDatabase(faceVertices.V0) + 1, uvDatabase.Add(uvs[0]) + 1);
string v1 = String.Format("{0}/{1}/1", vertexDatabase.AddToDatabase(faceVertices.V1) + 1, uvDatabase.Add(uvs[1]) + 1);
string v2 = String.Format("{0}/{1}/1", vertexDatabase.AddToDatabase(faceVertices.V2) + 1, uvDatabase.Add(uvs[2]) + 1);
string v3 = String.Format("{0}/{1}/1", vertexDatabase.AddToDatabase(faceVertices.V3) + 1, uvDatabase.Add(uvs[3]) + 1);
faceBuilder.AppendFormat("f {0} {1} {2} {3}\n", v0, v1, v2, v3);
}
}
}
}
// Now go through any tile objects we may have and write them out as face groups as well
foreach (var tmxMesh in this.tmxMap.GetUniqueListOfVisibleObjectTileMeshes())
{
// We're going to use this tile object
groupCount++;
Logger.WriteLine("Writing '{0}' tile group", tmxMesh.UniqueMeshName);
faceBuilder.AppendFormat("\ng {0}\n", tmxMesh.UniqueMeshName);
// Get the single tile associated with this mesh
TmxTile tmxTile = this.tmxMap.Tiles[tmxMesh.TileIds[0]];
var vertices = CalculateFaceVertices_TileObject(tmxTile.TileSize, tmxTile.Offset);
var uvs = CalculateFaceTextureCoordinates(tmxTile, false, false, false);
// TileObjects have zero depth on their vertices. Their GameObject parent will set depth.
FaceVertices faceVertices = new FaceVertices {
Vertices = vertices, Depth_z = 0.0f
};
// Adds vertices and uvs to the database as we build the face strings
string v0 = String.Format("{0}/{1}/1", vertexDatabase.AddToDatabase(faceVertices.V0) + 1, uvDatabase.Add(uvs[0]) + 1);
string v1 = String.Format("{0}/{1}/1", vertexDatabase.AddToDatabase(faceVertices.V1) + 1, uvDatabase.Add(uvs[1]) + 1);
string v2 = String.Format("{0}/{1}/1", vertexDatabase.AddToDatabase(faceVertices.V2) + 1, uvDatabase.Add(uvs[2]) + 1);
string v3 = String.Format("{0}/{1}/1", vertexDatabase.AddToDatabase(faceVertices.V3) + 1, uvDatabase.Add(uvs[3]) + 1);
faceBuilder.AppendFormat("f {0} {1} {2} {3}\n", v0, v1, v2, v3);
}
// All of our faces have been built and vertex and uv databases have been filled.
// Start building out the obj file
StringWriter objWriter = new StringWriter();
objWriter.WriteLine("# Wavefront OBJ file automatically generated by Tiled2Unity");
objWriter.WriteLine();
Logger.WriteLine("Writing face vertices");
objWriter.WriteLine("# Vertices (Count = {0})", vertexDatabase.List.Count());
foreach (var v in vertexDatabase.List)
{
objWriter.WriteLine("v {0} {1} {2}", v.X, v.Y, v.Z);
}
objWriter.WriteLine();
Logger.WriteLine("Writing face uv coordinates");
objWriter.WriteLine("# Texture cooridinates (Count = {0})", uvDatabase.List.Count());
foreach (var uv in uvDatabase.List)
{
objWriter.WriteLine("vt {0} {1}", uv.X, uv.Y);
}
objWriter.WriteLine();
// Write the one indexed normal
objWriter.WriteLine("# Normal");
objWriter.WriteLine("vn 0 0 -1");
objWriter.WriteLine();
// Now we can copy over the string used to build the databases
objWriter.WriteLine("# Groups (Count = {0})", groupCount);
objWriter.WriteLine(faceBuilder.ToString());
return(objWriter);
}
