From b634bad931f530ee0a207e1461ffc5e52ebb83e3 Mon Sep 17 00:00:00 2001
From: metamuffin <metamuffin@disroot.org>
Date: Sat, 10 Jan 2026 17:16:03 +0100
Subject: compiles with tile stacks

---
 server/protocol/src/helpers.rs | 22 ++++++++++++++++------
 server/protocol/src/lib.rs     |  8 +++-----
 2 files changed, 19 insertions(+), 11 deletions(-)

(limited to 'server/protocol')

diff --git a/server/protocol/src/helpers.rs b/server/protocol/src/helpers.rs
index 679e6301..1be37a36 100644
--- a/server/protocol/src/helpers.rs
+++ b/server/protocol/src/helpers.rs
@@ -45,6 +45,20 @@ impl Gamedata {
             .enumerate()
             .map(|(i, e)| (RecipeIndex(i), e))
     }
+    pub fn can_place_item(&self, tiles: &[TileIndex], item: ItemIndex) -> bool {
+        for t in tiles.iter().rev() {
+            if let Some(whitelist) = self.tile_placeable_items.get(t) {
+                return whitelist.contains(&item);
+            }
+            if self.tile_placeable_any.contains(t) {
+                return true;
+            }
+        }
+        false
+    }
+    pub fn walkable(&self, tiles: &[TileIndex]) -> bool {
+        tiles.iter().any(|t| self.tile_collide.contains(t))
+    }
 }
 
 impl Recipe {
@@ -92,13 +106,9 @@ impl Recipe {
 
         a.iter().chain(b.iter()).copied()
     }
-    pub fn supports_tile(&self, tile: Option<TileIndex>) -> bool {
+    pub fn supports_tile(&self, tile: TileIndex) -> bool {
         if let Some(tile_constraint) = self.tile() {
-            if let Some(tile) = tile {
-                tile == tile_constraint
-            } else {
-                false
-            }
+            tile == tile_constraint
         } else {
             true
         }
diff --git a/server/protocol/src/lib.rs b/server/protocol/src/lib.rs
index d7cd2cd9..8a6e282e 100644
--- a/server/protocol/src/lib.rs
+++ b/server/protocol/src/lib.rs
@@ -87,9 +87,10 @@ pub struct Gamedata {
     pub current_map: String,
     pub item_names: Vec<String>,
     pub tile_names: Vec<String>,
-    pub tile_walkable: HashSet<TileIndex>,
+    pub tile_collide: HashSet<TileIndex>,
     #[serde(deserialize_with = "deser_tile_index_map")]
     pub tile_placeable_items: BTreeMap<TileIndex, HashSet<ItemIndex>>,
+    pub tile_placeable_any: HashSet<TileIndex>,
     pub tile_interactable_empty: HashSet<TileIndex>,
     pub maps: Vec<(String, MapMetadata)>,
     pub bot_algos: Vec<String>,
@@ -257,11 +258,8 @@ pub enum PacketC {
         warn: bool,
     },
     UpdateMap {
-        tile: IVec2,
-        kind: Option<TileIndex>,
-        neighbors: [Option<TileIndex>; 4],
+        changes: Vec<(IVec2, Vec<TileIndex>)>,
     },
-    FlushMap,
     Communicate {
         player: PlayerID,
         message: Option<Message>,
-- 
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