private void BuildTilesetFromCollection(XElement xTileset, AtlasBuilder atlas)
{
m_TilesetScript.m_IsImageCollection = true;
foreach (var xTile in xTileset.Elements("tile"))
{
int tileIndex = xTile.GetAttributeAs <int>("id");
var xImage = xTile.Element("image");
if (xImage != null)
{
string textureAssetPath = xImage.GetAttributeAs <string>("source");
// Load the texture. We will make sprites and tiles out of this image.
var tex2d = m_Importer.RequestAssetAtPath <Texture2D>(textureAssetPath);
if (tex2d == null)
{
// Texture was not found yet so report the error to the importer UI and bail
m_Importer.ReportError("Missing texture asset for tile {0}: {1}", tileIndex, textureAssetPath);
return;
}
var rcSource = new Rect(0, 0, tex2d.width, tex2d.height);
atlas.AddTile(tileIndex, tex2d, rcSource);
}
}
}
private void BuildTilesetFromImage(XElement xTileset, AtlasBuilder atlas)
{
m_TilesetScript.m_IsImageCollection = false;
XElement xImage = xTileset.Element("image");
string textureAssetPath = xImage.GetAttributeAs <string>("source");
int textureWidth = xImage.GetAttributeAs <int>("width");
int textureHeight = xImage.GetAttributeAs <int>("height");
// Load the texture. We will make sprites and tiles out of this image.
var tex2d = m_Importer.RequestAssetAtPath <Texture2D>(textureAssetPath);
if (tex2d == null)
{
// Texture was not found so report the error to the importer UI and bail
m_Importer.ReportError("Missing texture asset: {0}", textureAssetPath);
m_TilesetScript.m_HasErrors = true;
return;
}
if (tex2d.width < textureWidth || tex2d.height < textureHeight)
{
// Texture was not imported into Unity correctly
var max = Mathf.Max(textureWidth, textureHeight);
m_Importer.ReportError("Texture was imported at a smaller size. Make sure 'Max Size' on '{0}' is at least '{1}'", textureAssetPath, max);
m_TilesetScript.m_HasErrors = true;
return;
}
for (int i = 0; i < m_TilesetScript.m_TileCount; i++)
{
// Get grid x,y coords
int x = i % m_TilesetScript.m_TileColumns;
int y = i / m_TilesetScript.m_TileColumns;
// Get x source on texture
int srcx = x * m_TilesetScript.m_TileWidth;
srcx += x * m_TilesetScript.m_Spacing;
srcx += m_TilesetScript.m_Margin;
// Get y source on texture
int srcy = y * m_TilesetScript.m_TileHeight;
srcy += y * m_TilesetScript.m_Spacing;
srcy += m_TilesetScript.m_Margin;
// In Tiled, texture origin is the top-left. However, in Unity the origin is bottom-left.
srcy = (textureHeight - srcy) - m_TilesetScript.m_TileHeight;
// Add the tile to our atlas
Rect rcSource = new Rect(srcx, srcy, m_TilesetScript.m_TileWidth, m_TilesetScript.m_TileHeight);
atlas.AddTile(i, tex2d, rcSource);
}
}
private void BuildTileset(XElement xTileset)
{
// Build the initial database of tiles and the image components that make them
// There are two ways that our collection of tiles can be created from images
// 1) From one image broken down into parts (many tiles in one image)
// 2) From a collection of images (one tile per image)
var atlas = new AtlasBuilder(m_Importer, m_UseSpriteAtlas, (int)m_AtlasWidth, (int)m_AtlasHeight, m_TilesetScript);
if (xTileset.Element("image") != null)
{
BuildTilesetFromImage(xTileset, atlas);
}
else
{
BuildTilesetFromCollection(xTileset, atlas);
}
// We're done collecting all the tile data. Build our atlas.
// (Note that we call build even if we are not using texture atlases)
atlas.Build();
}
private void BuildTilesetFromCollection(XElement xTileset, AtlasBuilder atlas)
{
m_TilesetScript.m_IsImageCollection = true;
foreach (var xTile in xTileset.Elements("tile"))
{
int tileIndex = xTile.GetAttributeAs <int>("id");
var xImage = xTile.Element("image");
if (xImage != null)
{
string textureAssetPath = xImage.GetAttributeAs <string>("source");
int textureWidth = xImage.GetAttributeAs <int>("width");
int textureHeight = xImage.GetAttributeAs <int>("height");
// Load the texture. We will make sprites and tiles out of this image.
var tex2d = m_Importer.RequestAssetAtPath <Texture2D>(textureAssetPath);
if (tex2d == null)
{
// Texture was not found yet so report the error to the importer UI and bail
m_Importer.ReportError("Missing texture asset for tile {0}: {1}", tileIndex, textureAssetPath);
m_TilesetScript.m_HasErrors = true;
return;
}
if (tex2d.width < textureWidth || tex2d.height < textureHeight)
{
// Texture was not imported into Unity correctly
var max = Mathf.Max(textureWidth, textureHeight);
m_Importer.ReportError("Texture was imported at a smaller size. Make sure 'Max Size' on '{0}' is at least '{1}'", textureAssetPath, max);
m_TilesetScript.m_HasErrors = true;
return;
}
var rcSource = new Rect(0, 0, tex2d.width, tex2d.height);
atlas.AddTile(tileIndex, tex2d, rcSource);
}
}
}
private void BuildTilesetFromImage(XElement xTileset, AtlasBuilder atlas)
{
m_TilesetScript.m_IsImageCollection = false;
XElement xImage = xTileset.Element("image");
string textureAssetPath = xImage.GetAttributeAs <string>("source");
int textureWidth = xImage.GetAttributeAs <int>("width");
int textureHeight = xImage.GetAttributeAs <int>("height");
// Load the texture. We will make sprites and tiles out of this image.
var tex2d = m_Importer.RequestAssetAtPath <Texture2D>(textureAssetPath);
if (tex2d == null)
{
// Texture was not found so report the error to the importer UI and bail
m_Importer.ReportError("Missing texture asset: {0}", textureAssetPath);
m_TilesetScript.m_HasErrors = true;
return;
}
// This is annoying but a tileset may have recently changed but Tiled hasn't been updated on the status yet
var texAssetPath = AssetDatabase.GetAssetPath(tex2d);
var texFullPath = Path.GetFullPath(texAssetPath);
var imgHeaderDims = ImageHeader.GetDimensions(texFullPath);
if (imgHeaderDims.x != textureWidth || imgHeaderDims.y != textureHeight)
{
// Tileset needs to be resaved in Tiled
m_Importer.ReportError("Mismatching width/height detected. Tileset = ({0}, {1}), image = {2}. This may happen when a tileset image has been resized. Open map and tileset in Tiled Map Editor and resave.", textureWidth, textureHeight, imgHeaderDims);
m_TilesetScript.m_HasErrors = true;
return;
}
if (tex2d.width < textureWidth || tex2d.height < textureHeight)
{
// Texture was not imported into Unity correctly
var max = Mathf.Max(textureWidth, textureHeight);
m_Importer.ReportError("Texture was imported at a smaller size. Make sure 'Max Size' on '{0}' is at least '{1}'", textureAssetPath, max);
m_TilesetScript.m_HasErrors = true;
return;
}
for (int i = 0; i < m_TilesetScript.m_TileCount; i++)
{
// Get grid x,y coords
int x = i % m_TilesetScript.m_TileColumns;
int y = i / m_TilesetScript.m_TileColumns;
// Get x source on texture
int srcx = x * m_TilesetScript.m_TileWidth;
srcx += x * m_TilesetScript.m_Spacing;
srcx += m_TilesetScript.m_Margin;
// Get y source on texture
int srcy = y * m_TilesetScript.m_TileHeight;
srcy += y * m_TilesetScript.m_Spacing;
srcy += m_TilesetScript.m_Margin;
// In Tiled, texture origin is the top-left. However, in Unity the origin is bottom-left.
srcy = (textureHeight - srcy) - m_TilesetScript.m_TileHeight;
if (srcy < 0)
{
// This is an edge condition in Tiled if a tileset's texture may have been resized
break;
}
// Add the tile to our atlas
Rect rcSource = new Rect(srcx, srcy, m_TilesetScript.m_TileWidth, m_TilesetScript.m_TileHeight);
atlas.AddTile(i, tex2d, rcSource);
}
}
