Don't prompt the user in growth if they can't use the ability

Don't prompt the user to specify the amount of plants to create if they
can't create any due to having no fruit or no empty adjacent squares
to put plants on.

1 files changed, 13 insertions, 8 deletions

diff --git a/crawl-ref/source/godabil.cc b/crawl-ref/source/godabil.cc
index dce5c197d1..0755e70e81 100644
--- a/crawl-ref/source/godabil.cc
+++ b/crawl-ref/source/godabil.cc
@@ -345,7 +345,7 @@ bool fedhas_shoot_through(const bolt & beam, const monsters * victim)
     {
         monsters * temp = dynamic_cast<monsters *> (originator);
         if (!temp)
-            return false;
+            return (false);
         origin_worships_fedhas = temp->god == GOD_FEDHAS;
         origin_attitude = temp->attitude;
     }
@@ -684,7 +684,7 @@ bool sunlight()
 template<typename T>
 bool less_second(const T & left, const T & right)
 {
-    return left.second < right.second;
+    return (left.second < right.second);
 }
 
 typedef std::pair<coord_def, int> point_distance;
@@ -904,19 +904,19 @@ bool _prompt_amount(int max, int & selected)
 
         // Default is max
         if (keyin == '\n'  || keyin == '\r')
-            return true;
+            return (true);
 
         // Otherwise they should enter a digit
         if (isdigit(keyin))
         {
             selected = keyin - '0';
             if (selected > 0 && selected <= max)
-                return true;
+                return (true);
         }
         // else they entered some garbage?
     }
 
-    return max;
+    return (max);
 }
 
 
@@ -934,12 +934,12 @@ int _collect_fruit(std::vector<std::pair<int,int>  > & available_fruit)
         }
     }
 
-    return total;
+    return (total);
 }
 
 bool _less_first(const std::pair<int, int> & left, const std::pair<int, int> & right)
 {
-    return left.first < right.first;
+    return (left.first < right.first);
 }
 void _decrease_amount(std::vector<std::pair<int, int> > & available, int amount)
 {
@@ -979,11 +979,16 @@ bool plant_ring_from_fruit()
 
     int max_use = std::min(total_fruit, int(adjacent.size()) );
 
+    // Don't prompt if we can't do anything (due to having no fruit or
+    // no squares to place plants on).
+    if (max_use == 0)
+        return (false);
+
     // And how many plants does the user want to create?
     int target_count;
     if (!_prompt_amount(max_use, target_count))
     {
-        return false;
+        return (false);
     }
 
     if ((int)adjacent.size() > target_count)