diff --git a/src/citizen.rs b/src/citizen.rs
index 374c387..e3a1ef8 100644
--- a/src/citizen.rs
+++ b/src/citizen.rs
@@ -200,7 +200,7 @@ pub fn citizen_movement(
 fn is_valid_move(tilemap: &TileMap, pos: IVec3) -> bool {
     // Check if the tile at current position is not blocking
     if let Some(current_tile) = tilemap.floor_tiles.get(&pos) {
-        if current_tile.1 {
+        if current_tile.0 != 0 {
             return false;
         }
     }
@@ -208,7 +208,7 @@ fn is_valid_move(tilemap: &TileMap, pos: IVec3) -> bool {
     // Check if there's solid ground below
     let pos_below = pos - IVec3::new(0, 0, 1);
     if let Some(below_tile) = tilemap.floor_tiles.get(&pos_below) {
-        return below_tile.1;
+        return below_tile.0 != 0;
     }
     false
 }
diff --git a/src/main.rs b/src/main.rs
index 02049ec..c1f0b69 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -54,7 +54,7 @@ fn main() {
                 tile::camera_z_movement,
                 tile::update_tile_visibility
                     .run_if(|camera_moved: Res<tile::CameraMoved>| camera_moved.0),
-                // log_fps_system,
+                log_fps_system,
             ),
         )
         .run();
diff --git a/src/tilemap.rs b/src/tilemap.rs
index cb29bac..8a04be4 100644
--- a/src/tilemap.rs
+++ b/src/tilemap.rs
@@ -86,7 +86,7 @@ pub fn calculate_visibility(pos: IVec3, tilemap: &TileMap) -> [u32; 8] {
 
         let mut is_occluded = false;
 
-        'vertical_check: for z_offset in 1..=35 {
+        'vertical_check: for z_offset in 1..5 {
             let above_pos = IVec3::new(pos.x, pos.y, pos.z + (z_offset * tile_size));
             if above_pos.z <= camera_z {
                 if let Some(&(_, opaque, _, _, _)) = tilemap.floor_tiles.get(&above_pos) {
@@ -95,6 +95,10 @@ pub fn calculate_visibility(pos: IVec3, tilemap: &TileMap) -> [u32; 8] {
                         break 'vertical_check;
                     }
                 }
+                if z_offset >= 4 {
+                    is_occluded = true;
+                    break 'vertical_check;
+                }
                 // if let Some(&(_, solid, _)) = tilemap.fixtures.get(&above_pos) {
                 //     if solid {
                 //         is_occluded = true;