Undertale for AP (#439)

Randomizes the items, and adds a new item to the pool, "Plot" which lets you go further and further in the game the more you have.

Developers: WirTheAvali (Preferred name for professional use, mewlif)

worlds/undertale/Regions.py

@@ -0,0 +1,48 @@
+from BaseClasses import MultiWorld
+
+
+def link_undertale_areas(world: MultiWorld, player: int):
+    for (exit, region) in mandatory_connections:
+        world.get_entrance(exit, player).connect(world.get_region(region, player))
+
+
+# (Region name, list of exits)
+undertale_regions = [
+    ("Menu", ["New Game", "??? Exit"]),
+    ("???", []),
+    ("Hub", ["Ruins Hub", "Snowdin Hub", "Waterfall Hub", "Hotland Hub", "Core Hub"]),
+    ("Ruins", ["Ruins Exit"]),
+    ("Old Home", []),
+    ("Snowdin Forest", ["Snowdin Forest Exit"]),
+    ("Snowdin Town", ["Papyrus\" Home Entrance"]),
+    ("Papyrus\" Home", []),
+    ("Waterfall", ["Undyne\"s Home Entrance"]),
+    ("Undyne\"s Home", []),
+    ("Hotland", ["Cooking Show Entrance", "Lab Elevator"]),
+    ("Cooking Show", ["News Show Entrance"]),
+    ("News Show", []),
+    ("True Lab", []),
+    ("Core", ["Core Exit"]),
+    ("New Home", ["New Home Exit"]),
+    ("Barrier", []),
+]
+
+# (Entrance, region pointed to)
+mandatory_connections = [
+    ("??? Exit", "???"),
+    ("New Game", "Hub"),
+    ("Ruins Hub", "Ruins"),
+    ("Ruins Exit", "Old Home"),
+    ("Snowdin Forest Exit", "Snowdin Town"),
+    ("Papyrus\" Home Entrance", "Papyrus\" Home"),
+    ("Undyne\"s Home Entrance", "Undyne\"s Home"),
+    ("Cooking Show Entrance", "Cooking Show"),
+    ("News Show Entrance", "News Show"),
+    ("Lab Elevator", "True Lab"),
+    ("Core Exit", "New Home"),
+    ("New Home Exit", "Barrier"),
+    ("Snowdin Hub", "Snowdin Forest"),
+    ("Waterfall Hub", "Waterfall"),
+    ("Hotland Hub", "Hotland"),
+    ("Core Hub", "Core"),
+]