From 153acb7f644d755c45533b7c5311e3ffa47e8973 Mon Sep 17 00:00:00 2001
From: historia <[not public]>
Date: Fri, 18 Sep 2026 05:31:09 -0400
Subject: fix: harden engine across casino, economy, concurrency, security, and
 content

---
 internal/game/act_burn.go | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'internal/game/act_burn.go')

diff --git a/internal/game/act_burn.go b/internal/game/act_burn.go
index 2d03ac4..84f7f14 100644
--- a/internal/game/act_burn.go
+++ b/internal/game/act_burn.go
@@ -417,6 +417,12 @@ func (g *Game) broadcastDrop(p *player.Player, itemID, itemName string) {
 }
 
 func (g *Game) FireTick() {
+	// Mandatory tick-system guard: the master per-tick subscriber can fire
+	// before SetHub during startup, and burning out a fire reaches
+	// cancelStokers -> g.Hub.PlayersInRoom. See building_guide/tick_order.md.
+	if g.Hub == nil {
+		return
+	}
 	for _, st := range g.World.AllFireStates() {
 		st.Quality--
 		if st.Quality <= 0 {
-- 
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