private static void PrepareTransformForTileObject(Graphics g, TmxMap tmxMap, TmxObjectTile tmxObjectTile)
{
// Isometric tiles are off by a half-width
if (tmxMap.Orientation == TmxMap.MapOrientation.Isometric)
{
g.TranslateTransform(-tmxObjectTile.Tile.TileSize.Width * 0.5f, 0);
}
// Apply scale
{
// Move to "local origin" of tile and scale
float toCenter_x = (tmxMap.Orientation == TmxMap.MapOrientation.Isometric) ? (tmxObjectTile.Tile.TileSize.Width * 0.5f) : 0.0f;
g.TranslateTransform(toCenter_x, 0);
{
SizeF scale = tmxObjectTile.GetTileObjectScale();
g.ScaleTransform(scale.Width, scale.Height);
}
// Move back
g.TranslateTransform(-toCenter_x, 0);
}
// Apply horizontal flip
if (tmxObjectTile.FlippedHorizontal)
{
g.TranslateTransform(tmxObjectTile.Tile.TileSize.Width, 0);
g.ScaleTransform(-1, 1);
}
// Apply vertical flip
if (tmxObjectTile.FlippedVertical)
{
g.TranslateTransform(0, -tmxObjectTile.Tile.TileSize.Height);
g.ScaleTransform(1, -1);
}
}
private static void DrawObjectCollider(Graphics g, TmxMap tmxMap, TmxObject tmxObject, Color color)
{
using (Brush brush = TmxHelper.CreateObjectColliderBrush(color))
using (Pen pen = new Pen(color))
{
GraphicsState state = g.Save();
PointF xfPosition = TmxMath.ObjectPointFToMapSpace(tmxMap, tmxObject.Position);
g.TranslateTransform(xfPosition.X, xfPosition.Y);
g.RotateTransform(tmxObject.Rotation);
if (tmxObject.GetType() == typeof(TmxObjectPolygon))
{
DrawPolygon(g, pen, brush, tmxMap, tmxObject as TmxObjectPolygon);
}
else if (tmxObject.GetType() == typeof(TmxObjectRectangle))
{
if (tmxMap.Orientation == TmxMap.MapOrientation.Isometric)
{
TmxObjectPolygon tmxIsometricRectangle = TmxObjectPolygon.FromRectangle(tmxMap, tmxObject as TmxObjectRectangle);
DrawPolygon(g, pen, brush, tmxMap, tmxIsometricRectangle);
}
else
{
// Rectangles are polygons
DrawPolygon(g, pen, brush, tmxMap, tmxObject as TmxObjectPolygon);
}
}
else if (tmxObject.GetType() == typeof(TmxObjectEllipse))
{
DrawEllipse(g, pen, brush, tmxMap, tmxObject as TmxObjectEllipse);
}
else if (tmxObject.GetType() == typeof(TmxObjectPolyline))
{
DrawPolyline(g, pen, tmxMap, tmxObject as TmxObjectPolyline);
}
else if (tmxObject.GetType() == typeof(TmxObjectTile))
{
GraphicsState tileState = g.Save();
TmxObjectTile tmxObjectTile = tmxObject as TmxObjectTile;
// Isometric tiles are off by a half-width
if (tmxMap.Orientation == TmxMap.MapOrientation.Isometric)
{
g.TranslateTransform(-tmxMap.TileWidth * 0.5f, 0);
}
// Apply scale
SizeF scale = tmxObjectTile.GetTileObjectScale();
g.ScaleTransform(scale.Width, scale.Height);
// Apply horizontal flip
if (tmxObjectTile.FlippedHorizontal)
{
g.TranslateTransform(tmxObjectTile.Tile.TileSize.Width, 0);
g.ScaleTransform(-1, 1);
}
// Apply vertical flip
if (tmxObjectTile.FlippedVertical)
{
g.TranslateTransform(0, -tmxObjectTile.Tile.TileSize.Height);
g.ScaleTransform(1, -1);
}
// (Note: Now we can draw the tile and collisions as normal as the transforms have been set up.)
// Draw the tile
Rectangle destination = new Rectangle(0, -tmxObjectTile.Tile.TileSize.Height, tmxObjectTile.Tile.TileSize.Width, tmxObjectTile.Tile.TileSize.Height);
Rectangle source = new Rectangle(tmxObjectTile.Tile.LocationOnSource, tmxObjectTile.Tile.TileSize);
g.DrawImage(tmxObjectTile.Tile.TmxImage.ImageBitmap, destination, source, GraphicsUnit.Pixel);
// Put a black border around the tile so it sticks out a bit as an object
g.DrawRectangle(Pens.Black, destination);
// Draw the collisions
// Temporarily set orienation to Orthogonal for tile colliders
TmxMap.MapOrientation restoreOrientation = tmxMap.Orientation;
tmxMap.Orientation = TmxMap.MapOrientation.Orthogonal;
{
// Make up for the fact that the bottom-left corner is the origin
g.TranslateTransform(0, -tmxObjectTile.Tile.TileSize.Height);
foreach (var obj in tmxObjectTile.Tile.ObjectGroup.Objects)
{
DrawObjectCollider(g, tmxMap, obj, Color.Gray);
}
}
tmxMap.Orientation = restoreOrientation;
g.Restore(tileState);
}
else
{
g.Restore(state);
Logger.WriteWarning("Unhandled object: {0}", tmxObject.GetNonEmptyName());
}
// Restore our state
g.Restore(state);
}
}