Pathfinding and re-pickup of the project

server/src/map.rs

@@ -64,14 +64,13 @@ impl TileMap {
     }
 }
 
-/// Gameplay flags for a global tile id. Hand-maintained vocabulary — extend as the
-/// tileset grows. Unknown ids default to a plain walkable floor tile.
-///
-/// Tile ids correspond to indices into `overworld.tga` on the client side.
+/// Gameplay flags for a global tile id. Collision comes from the shared movement
+/// vocabulary (`shared::tile_collidable`) so the client can predict it identically;
+/// other flags (opaque, …) stay server-side. Tile ids index into `overworld.tga`.
 pub fn tile_flags(tile_id: u16) -> TileFlags {
-    match tile_id {
-        // TODO: fill in collidable / opaque tiles from overworld.tga, e.g.
-        // 146 => TileFlags(TileFlags::COLLIDABLE | TileFlags::OPAQUE),
-        _ => TileFlags::default(),
+    let mut bits = 0u8;
+    if shared::tile_collidable(tile_id) {
+        bits |= TileFlags::COLLIDABLE;
     }
+    TileFlags(bits)
 }