From aa808bf77d593f443816526bbf31b9794bfc90eb Mon Sep 17 00:00:00 2001
From: Zeno Rogue <zeno@attnam.com>
Date: Thu, 4 Dec 2025 23:35:21 +0100
Subject: [PATCH] moved chance from sag to main

---
 game.cpp                   | 10 ++++++++++
 rogueviz/sag/annealing.cpp |  9 ---------
 2 files changed, 10 insertions(+), 9 deletions(-)

diff --git a/game.cpp b/game.cpp
index 2cf8eafe..436aa865 100644
--- a/game.cpp
+++ b/game.cpp
@@ -68,6 +68,16 @@ EX ld randf_from(std::mt19937& r) {
 
 EX ld hrandf() { return randf_from(hrngen); }
 
+/** returns true with probability p */
+EX bool chance(double p) {
+  p *= double(hrngen.max()) + 1;
+  auto l = hrngen();
+  auto pv = (decltype(l)) p;
+  if(l < pv) return true;
+  if(l == pv) return chance(p-pv);
+  return false;
+  }
+
 /** Returns an integer corresponding to the current state of \link hrngen \endlink.
  */
 EX int hrandstate() {
diff --git a/rogueviz/sag/annealing.cpp b/rogueviz/sag/annealing.cpp
index 56515105..ba6e6a27 100644
--- a/rogueviz/sag/annealing.cpp
+++ b/rogueviz/sag/annealing.cpp
@@ -20,15 +20,6 @@ long long numiter = 0;
 int vizsa_start;
 int vizsa_len = 5;
   
-bool chance(double p) {
-  p *= double(hrngen.max()) + 1;
-  auto l = hrngen();
-  auto pv = (decltype(l)) p;
-  if(l < pv) return true;
-  if(l == pv) return chance(p-pv);
-  return false;
-  }
-
 bool twoway = false;
 int moves, nomoves;