add empty overworld world type

src/activities/mod.rs

@@ -1,8 +1,9 @@
 pub mod house;
 pub mod overworld;
 
-#[derive(Debug)]
+#[derive(Debug, Default)]
 pub enum Activity {
+	#[default]
 	House,
 	Overworld
 }

src/activities/overworld.rs

@@ -1,5 +1,7 @@
 use comfy::*;
 
+pub mod worldgen;
+
 pub fn draw(_state: &crate::State, _engine: &comfy::EngineContext) {
 	draw_circle(vec2(0.0, 0.0), 0.5, GREEN, 0);
 }

src/activities/overworld/worldgen.rs

@@ -0,0 +1,9 @@
+
+#[derive(Debug)]
+pub struct Overworld;
+
+impl Default for Overworld {
+	fn default() -> Self {
+		Self
+	}
+}