From d7d17f777987047999d09d196417d3f8e8241ba5 Mon Sep 17 00:00:00 2001
From: Kai Stevenson <kai@kaistevenson.com>
Date: Sat, 29 Aug 2026 14:12:01 -0700
Subject: fix sleeping, disable sleeping

---
 src/sim/cell_manager/chunk.rs | 13 +++++++++++--
 src/sim/cell_manager/sim.rs   | 12 ++++++++----
 2 files changed, 19 insertions(+), 6 deletions(-)

(limited to 'src/sim/cell_manager')

diff --git a/src/sim/cell_manager/chunk.rs b/src/sim/cell_manager/chunk.rs
index 17e1551..48e9d16 100644
--- a/src/sim/cell_manager/chunk.rs
+++ b/src/sim/cell_manager/chunk.rs
@@ -1,7 +1,7 @@
 use glam::IVec2;
 
 use crate::{
-    config::{CELLS_IN_CHUNK, CHUNK_SIZE},
+    config::{CELLS_IN_CHUNK, CHUNK_SIZE, SETTLED_THRESOHLD},
     content::materials::{MaterialForm, MaterialId},
     sim::{cell::Cell, lib::marching_squares::Marchable},
 };
@@ -10,6 +10,7 @@ pub struct Chunk {
     pub cells: Box<[Cell; CELLS_IN_CHUNK]>,
     pub sleeping: bool,
     pub needs_texture_update: bool,
+    pub collider_dirty_seqno: Option<u64>,
 }
 
 impl Chunk {
@@ -22,11 +23,18 @@ impl Chunk {
         self.cells[x as usize + y as usize * CHUNK_SIZE as usize] = cell;
     }
 
+    pub fn mark_collider_dirty(&mut self, seqno: u64) {
+        if self.collider_dirty_seqno.is_none() {
+            self.collider_dirty_seqno = Some(seqno);
+        }
+    }
+
     pub fn void() -> Self {
         Chunk {
             cells: Box::new([Cell::void(); CELLS_IN_CHUNK]),
             sleeping: true,
             needs_texture_update: true,
+            collider_dirty_seqno: None,
         }
     }
 
@@ -35,6 +43,7 @@ impl Chunk {
             cells: Box::new([Cell::void(); CELLS_IN_CHUNK]),
             sleeping: true,
             needs_texture_update: true,
+            collider_dirty_seqno: Some(0),
         };
 
         for dy in 1..5 {
@@ -60,7 +69,7 @@ impl Marchable for Chunk {
             let cell = self.get_cell_at_local_position(pos.x as u8, pos.y as u8);
             let material = cell.material.def();
             material.form == MaterialForm::Solid
-                || material.form == MaterialForm::Powder && cell.settled() > 4
+                || material.form == MaterialForm::Powder && cell.settled() >= SETTLED_THRESOHLD
         }
     }
     fn size(&self) -> IVec2 {
diff --git a/src/sim/cell_manager/sim.rs b/src/sim/cell_manager/sim.rs
index ffa253b..6b3a0de 100644
--- a/src/sim/cell_manager/sim.rs
+++ b/src/sim/cell_manager/sim.rs
@@ -128,7 +128,7 @@ fn adjacent_chunks(x: u8, y: u8) -> Vec<usize> {
     }
 }
 
-fn internal_set_cell(chunks: &mut [Option<&mut Chunk>; 9], x: i32, y: i32, cell: Cell) {
+fn internal_set_cell(chunks: &mut [Option<&mut Chunk>; 9], x: i32, y: i32, cell: Cell, seqno: u64) {
     let cx = x.div_euclid(CHUNK_SIZE);
     let cy = y.div_euclid(CHUNK_SIZE);
     let lx = x.rem_euclid(CHUNK_SIZE) as u8;
@@ -139,10 +139,12 @@ fn internal_set_cell(chunks: &mut [Option<&mut Chunk>; 9], x: i32, y: i32, cell:
             chunk.set_cell_at_local_position(lx, ly, cell);
             chunk.needs_texture_update = true;
             chunk.sleeping = false;
+            chunk.mark_collider_dirty(seqno);
             // if we're at the boundaries of the chunk, wake the adjacent chunk(s)
             for idx in adjacent_chunks(lx, ly) {
                 if let Some(chunk) = chunks[idx].as_mut() {
                     chunk.sleeping = false;
+                    chunk.mark_collider_dirty(seqno);
                 }
             }
         }
@@ -151,10 +153,12 @@ fn internal_set_cell(chunks: &mut [Option<&mut Chunk>; 9], x: i32, y: i32, cell:
             target.set_cell_at_local_position(x as u8, y as u8, cell);
             target.needs_texture_update = true;
             target.sleeping = false;
+            target.mark_collider_dirty(seqno);
             // if we're at the boundaries of the chunk, wake the adjacent chunk(s)
             for idx in adjacent_chunks(lx, ly) {
                 if let Some(chunk) = chunks[idx].as_mut() {
                     chunk.sleeping = false;
+                    chunk.mark_collider_dirty(seqno);
                 }
             }
         }
@@ -200,7 +204,7 @@ impl UpdateCtx<'_, '_, '_> {
         debug_assert!(dy > -CHUNK_SIZE + 1 && dy < CHUNK_SIZE - 1);
         let x = self.x + dx;
         let y = self.y + dy;
-        internal_set_cell(self.chunks, x, y, cell);
+        internal_set_cell(self.chunks, x, y, cell, self.seqno);
     }
 
     pub fn swap_or_settle(&mut self, candidates: &[(i32, i32)]) -> PostUpdateAction {
@@ -267,12 +271,12 @@ fn sim_tick_chunk(chunks: &mut [Option<&mut Chunk>; 9], seqno: u64) {
                             if cell.settled() < SETTLED_THRESOHLD {
                                 cell.match_parity(seqno + 1);
                                 cell.increment_settled();
-                                internal_set_cell(chunks, x, y, cell);
+                                internal_set_cell(chunks, x, y, cell, seqno);
                             }
                         }
                         PostUpdateAction::Apply => {
                             cell.match_parity(seqno + 1);
-                            internal_set_cell(chunks, x, y, cell);
+                            internal_set_cell(chunks, x, y, cell, seqno);
                         }
                     }
                 }
-- 
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