stockflow: make sure that manager order amounts are integers

Fixes DFHack#1044

plugins/lua/stockflow.lua

@@ -140,12 +140,12 @@ function collect_orders()
                                 stockpile = stockpile,
                                 entry = entry,
                             }
-                            
+
                             found = true
                             break
                         end
                     end
-                    
+
                     if not found then
                         print("Unmatched stockflow entry for stockpile #"..stockpile.stockpile_number..": "..entry.value.." ("..order_number..")")
                     end
@@ -174,7 +174,7 @@ function reaction_entry(reactions, job_type, values, name)
         -- We could warn about it; in any case, don't add it to the list.
         return
     end
-    
+
     local order = df.manager_order:new()
     -- These defaults differ from the newly created order's.
     order:assign{
@@ -420,7 +420,7 @@ function collect_reactions()
         local name = string.gsub(reaction.name, "^.", string.upper)
         reaction_entry(result, job_types.CustomReaction, {reaction_name = reaction.code}, name)
     end
-    
+
     -- Reactions generated by the game.
     for _, reaction in ipairs(df.global.world.raws.reactions) do
         if reaction.source_enid == entity.id then
@@ -751,15 +751,15 @@ function collect_reactions()
             {job_types.MakeBracelet, "Make", "Bracelet"},
             {job_types.MakeEarring, "Make", "Earring"},
         }, mat)
-        
+
         if not mat.cloth then
             material_reactions(result, {
                 {job_types.MakeCrown, "Make", "Crown"},
                 {job_types.MakeFigurine, "Make", "Figurine"},
                 {job_types.MakeRing, "Make", "Ring"},
                 {job_types.MakeGem, "Make Large", "Gem"},
             }, mat)
-            
+
             if not mat.short then
                 material_reactions(result, {
                     {job_types.MakeScepter, "Make", "Scepter"},
@@ -798,29 +798,29 @@ screen = gui.FramedScreen {
 
 function screen:onRenderBody(dc)
     -- Emulates the built-in manager screen.
-    
+
     if not (self.page_size == self.frame_rect.height - ExtraLines) then
         -- The screen size has changed.
         self:refilter()
     end
-    
+
     -- Top instruction line.
     dc:seek(1, 1):string("Type in parts of the name to narrow your search.  ", COLOR_WHITE)
     dc:key("LEAVESCREEN"):string(" to abort.", COLOR_WHITE)
-    
+
     -- Search term, if any.
     dc:seek(1, FirstRow + self.page_size + 1):string(self.search_string, COLOR_LIGHTCYAN)
-    
+
     -- Bottom instruction line.
     dc:seek(1, FirstRow + self.page_size + 2)
     dc:key("STANDARDSCROLL_UP"):key("STANDARDSCROLL_DOWN")
     dc:key("STANDARDSCROLL_PAGEUP"):key("STANDARDSCROLL_PAGEDOWN")
     dc:key("STANDARDSCROLL_LEFT"):key("STANDARDSCROLL_RIGHT")
     dc:string(": Select", COLOR_WHITE)
-    
+
     dc:seek(CenterCol, FirstRow + self.page_size + 2)
     dc:key("SETUPGAME_SAVE_PROFILE_ABORT"):string(": No order", COLOR_WHITE)
-    
+
     -- Reaction lines.
     for _, item in ipairs(self.displayed) do
         dc:seek(item.x, item.y):string(item.name, item.color)
@@ -954,7 +954,7 @@ function screen:refilter()
     -- * Yellow: At least one word starts with at least one search term
     -- * Grey: Each search term is found in the middle of a word
     self.page_size = self.frame_rect.height - ExtraLines
-    
+
     local filtered = {}
     local needles = splitstring(self.search_string, " ")
     for key, value in ipairs(reaction_list) do
@@ -1094,6 +1094,7 @@ end
 -- Place a new copy of the order onto the manager's queue.
 function create_orders(order, amount)
     local new_order = order:new()
+    amount = math.floor(amount)
     new_order.amount_left = amount
     new_order.amount_total = amount
     -- Todo: Create in a validated state if the fortress is small enough?