fix

src/entities/cargo/log.rs

@@ -20,16 +20,15 @@ use crate::world::VisibleGameEntity;
 /// Weight of a single log in kg. Enough to encumber a dorf carrying one.
 pub const LOG_WEIGHT_KG: u32 = 15;
 
-/// Find the standable surface tile at world XY. Returns the tile one above
-/// the highest floor tile where an entity can stand, or None if not found.
+/// Find the standable surface tile at world XY. Returns the floor tile
+/// where an entity can stand, or None if not found.
+/// The standable position IS the floor tile itself (has can_stand_in=true),
+/// not the air above it.
 fn find_surface_at(world_x: i32, world_y: i32, tilemap: &TileMap) -> Option<IVec3> {
     for z in -3i32..=4i32 {
         let floor_pos = IVec3::new(world_x, world_y, z * ITILE_SIZE);
-        if tilemap.floor_tiles.contains_key(&floor_pos) {
-            let above = IVec3::new(world_x, world_y, floor_pos.z + ITILE_SIZE);
-            if tilemap.is_standable(above) {
-                return Some(above);
-            }
+        if tilemap.floor_tiles.contains_key(&floor_pos) && tilemap.is_standable(floor_pos) {
+            return Some(floor_pos);
         }
     }
     None