From b84872c2b250626eb70e42d872f8ffb006915a4f Mon Sep 17 00:00:00 2001
From: Afforess <afforess@gmail.com>
Date: Sun, 3 Apr 2016 19:39:49 -0400
Subject: [PATCH] Fix nil when accessing biter scents data

---
 Makefile                     |  2 +-
 libs/region/biter_scents.lua | 10 ++++++----
 2 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/Makefile b/Makefile
index 17d8471..814d101 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,5 @@
 PACKAGE_NAME := Misanthrope
-VERSION_STRING := 0.3.5
+VERSION_STRING := 0.3.6
 
 OUTPUT_NAME := $(PACKAGE_NAME)_$(VERSION_STRING)
 OUTPUT_DIR := build/$(OUTPUT_NAME)
diff --git a/libs/region/biter_scents.lua b/libs/region/biter_scents.lua
index 2ee9cba..80955da 100644
--- a/libs/region/biter_scents.lua
+++ b/libs/region/biter_scents.lua
@@ -121,10 +121,12 @@ function biter_scents.tick(cache)
 end
 
 function biter_scents.get_value(cache, x, y)
-    local x_idx = bit32.band(x, 0x7F)
-    local y_idx = bit32.band(y, 0x7F)
-    if cache.values[x_idx] and cache.values[x_idx][y_idx] then
-        return cache.values[x_idx][y_idx]
+    if cache and cache.values then
+        local x_idx = bit32.band(x, 0x7F)
+        local y_idx = bit32.band(y, 0x7F)
+        if cache.values[x_idx] and cache.values[x_idx][y_idx] then
+            return cache.values[x_idx][y_idx]
+        end
     end
     return 0
 end