refactors entity spawning

src/map_builders/wfc/mod.rs

@@ -19,17 +19,13 @@ pub struct WaveFunctionCollapseBuilder {
     history: Vec<Map>,
     noise_areas: HashMap<i32, Vec<usize>>,
     derive_from: Option<Box<dyn MapBuilder>>,
+    spawn_list: Vec<(usize, String)>,
 }
 
 impl MapBuilder for WaveFunctionCollapseBuilder {
     fn build_map(&mut self, rng: &mut RandomNumberGenerator) {
         return self.build(rng);
     }
-    fn spawn_entities(&mut self, ecs: &mut World) {
-        for area in self.noise_areas.iter() {
-            spawner::spawn_region(ecs, area.1, self.depth);
-        }
-    }
     //  Getters
     fn get_map(&mut self) -> Map {
         return self.map.clone();
@@ -37,6 +33,9 @@ impl MapBuilder for WaveFunctionCollapseBuilder {
     fn get_starting_pos(&mut self) -> Position {
         return self.starting_position.clone();
     }
+    fn get_spawn_list(&self) -> &Vec<(usize, String)> {
+        return &self.spawn_list;
+    }
     // Mapgen visualisation stuff
     fn get_snapshot_history(&self) -> Vec<Map> {
         return self.history.clone();
@@ -61,6 +60,7 @@ impl WaveFunctionCollapseBuilder {
             history: Vec::new(),
             noise_areas: HashMap::new(),
             derive_from,
+            spawn_list: Vec::new(),
         }
     }
 
@@ -117,6 +117,11 @@ impl WaveFunctionCollapseBuilder {
 
         // Now we build a noise map for use in spawning entities later
         self.noise_areas = generate_voronoi_spawn_regions(&self.map, rng);
+
+        // Spawn the entities
+        for area in self.noise_areas.iter() {
+            spawner::spawn_region(&self.map, rng, area.1, self.depth, &mut self.spawn_list);
+        }
     }
 
     fn render_tile_gallery(&mut self, constraints: &Vec<MapChunk>, chunk_size: i32) {