[SM64] Add exception handling for area init and throw error for insta…

…nt warp objects (#390)

* [SM64] Add exception handling for area init and throw error for instant warp object

* Add back exception handeling

fast64_internal/sm64/sm64_level_writer.py

@@ -789,9 +789,12 @@ def include_proto(file_name):
         level_data.header_data += roomsC.header
 
     # Get area
-    area = exportAreaCommon(
-        area_root, transformMatrix, geolayoutGraph.startGeolayout, collision, f"{level_name}_{areaName}"
-    )
+    try:
+        area = exportAreaCommon(
+            area_root, transformMatrix, geolayoutGraph.startGeolayout, collision, f"{level_name}_{areaName}"
+        )
+    except Exception as exc:
+        raise PluginError(f"Error while creating area {area_root.areaIndex}: {str(exc)}") from exc
     if area.mario_start is not None:
         prev_level_script.marioStart = area.mario_start
     persistentBlockString = prev_level_script.get_persistent_block(

fast64_internal/sm64/sm64_objects.py

@@ -2353,6 +2353,8 @@ class WarpNodeProperty(bpy.types.PropertyGroup):
     expand: bpy.props.BoolProperty()
 
     def uses_area_nodes(self):
+        if self.instantWarpObject1 is None or self.instantWarpObject2 is None:
+            raise PluginError(f"Warp Start and Warp End in Warp Node {self.warpID} must have objects selected.")
         return (
             self.instantWarpObject1.sm64_obj_type == "Area Root"
             and self.instantWarpObject2.sm64_obj_type == "Area Root"