Fix nil when accessing biter scents data

Afforess · Apr 3, 2016 · b84872c · b84872c
1 parent a792eb3
commit b84872c
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Showing 2 changed files with 7 additions and 5 deletions.
diff --git 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
@@ -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