From e6742f59102f2beb305b813d7f0ee1d544bbc3e0 Mon Sep 17 00:00:00 2001
From: Kai Stevenson <kai@kaistevenson.com>
Date: Sun, 23 Aug 2026 12:14:19 -0700
Subject: separate data from cells

---
 src/sim/cell_manager/manager.rs | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)

(limited to 'src/sim/cell_manager/manager.rs')

diff --git a/src/sim/cell_manager/manager.rs b/src/sim/cell_manager/manager.rs
index 6fa5f37..12cc1b7 100644
--- a/src/sim/cell_manager/manager.rs
+++ b/src/sim/cell_manager/manager.rs
@@ -5,6 +5,7 @@ use crate::{
     sim::{
         cell::Cell,
         cell_manager::{chunk::Chunk, sim::sim_tick},
+        entity::EntityId,
     },
 };
 
@@ -45,6 +46,40 @@ impl CellManager {
         }
     }
 
+    // VERY EXPENSIVE
+    pub fn get_data_from_game_position(&self, x: i32, y: i32) -> Option<u16> {
+        let ((cx, cy), (dx, dy)) = CellManager::split_game_position(x, y);
+        self.chunk_position_to_chunk_idx
+            .get(&(cx, cy))
+            .map(|&idx| self.chunks[idx].get_data_at_local_position(dx, dy))
+            .flatten()
+    }
+
+    // VERY EXPENSIVE
+    pub fn set_data_from_game_position(&mut self, x: i32, y: i32, data: u16) {
+        let ((cx, cy), (dx, dy)) = CellManager::split_game_position(x, y);
+        if let Some(&idx) = self.chunk_position_to_chunk_idx.get(&(cx, cy)) {
+            self.chunks[idx].set_data_at_local_position(dx, dy, data);
+        }
+    }
+
+    // VERY EXPENSIVE
+    pub fn get_entity_from_game_position(&self, x: i32, y: i32) -> Option<EntityId> {
+        let ((cx, cy), (dx, dy)) = CellManager::split_game_position(x, y);
+        self.chunk_position_to_chunk_idx
+            .get(&(cx, cy))
+            .map(|&idx| self.chunks[idx].get_entity_at_local_position(dx, dy))
+            .flatten()
+    }
+
+    // VERY EXPENSIVE
+    pub fn set_entity_from_game_position(&mut self, x: i32, y: i32, entity_id: EntityId) {
+        let ((cx, cy), (dx, dy)) = CellManager::split_game_position(x, y);
+        if let Some(&idx) = self.chunk_position_to_chunk_idx.get(&(cx, cy)) {
+            self.chunks[idx].set_entity_at_local_position(dx, dy, entity_id);
+        }
+    }
+
     pub fn insert(&mut self, x: i32, y: i32, chunk: Chunk) {
         self.chunk_position_to_chunk_idx
             .insert((x, y), self.chunks.len());
-- 
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