support for 2D shadow casters

Added support for 2D shadow casters.

*DANGER* Shaders in CanvasItem CHANGED, if you are using shader in a
CanvasItem and pull this, you will lose them. Shaders now work through a
2D material system similar to 3D. If you don't want to lose the 2D
shader code, save the shader as a .shd, then create a material in
CanvasItem and re-assign the shader.

1 files changed, 4 insertions, 1 deletions

diff --git a/modules/gdscript/gd_script.cpp b/modules/gdscript/gd_script.cpp
index 0aa115ffbc..d3a9abf4b7 100644
--- a/modules/gdscript/gd_script.cpp
+++ b/modules/gdscript/gd_script.cpp
@@ -2696,7 +2696,10 @@ Error ResourceFormatSaverGDScript::save(const String &p_path,const RES& p_resour
 	}
 
 	file->store_string(source);
-
+	if (file->get_error()!=OK && file->get_error()!=ERR_FILE_EOF) {
+		memdelete(file);
+		return ERR_CANT_CREATE;
+	}
 	file->close();
 	memdelete(file);
 	return OK;