Initial implementation of fishing system. A couple bugs fixed, e.g. zombies that are killed by residents actually die.

src/time_system.nvgt

@@ -91,17 +91,31 @@ void expand_regular_area() {
         expanded_terrain_types.insert_last(terrain_type);
     }
 
-    // Place exactly one feature: either a stream or a tree
-    bool place_stream = (terrain_type != "grass") || (random(0, 1) == 0);
+    // Place features based on terrain type
+    // Forests get trees, other terrain gets streams or trees
+    bool place_tree = false;
+    if (terrain_type == "deep_forest") {
+        // Deep forest: 80% tree, 20% stream
+        place_tree = (random(1, 100) <= 80);
+    } else if (terrain_type == "forest") {
+        // Forest: 60% tree, 40% stream
+        place_tree = (random(1, 100) <= 60);
+    } else if (terrain_type == "grass") {
+        // Grass: 50% tree, 50% stream
+        place_tree = (random(0, 1) == 0);
+    } else {
+        // Stone/snow: no trees, always stream
+        place_tree = false;
+    }
 
-    if (place_stream) {
+    if (place_tree) {
+        // Try to place a tree with proper spacing and per-area limits
+        spawn_tree_in_area(new_start, new_end);
+    } else {
         int stream_width = random(1, 5);
         int stream_start = random(0, EXPANSION_SIZE - stream_width);
         int actual_start = new_start + stream_start;
         add_world_stream(actual_start, stream_width);
-    } else {
-        // Try to place a tree with proper spacing and per-area limits
-        spawn_tree_in_area(new_start, new_end);
     }
 
     area_expanded_today = true;
@@ -360,6 +374,10 @@ void update_time() {
             invasion_roll_done_today = false;
             invasion_scheduled_hour = -1;
             quest_roll_done_today = false;
+        }
+
+        // Residents consume food every 8 hours (at midnight, 8am, 4pm)
+        if (current_hour % 8 == 0) {
             consume_food_for_residents();
         }
 
@@ -405,6 +423,8 @@ void update_time() {
         check_weather_transition();
         attempt_resident_collection();
         attempt_resident_snare_retrieval();
+        attempt_resident_fishing();
+        attempt_resident_fish_smoking();
         if (current_hour == 6) {
             save_game_state();
         }