Implement coroutine handling

build_file.cpp

@@ -324,10 +324,24 @@ function ApplyRules(s)
     return nil
 end
 
+Coroutines = {}
+function AddCo(f)
+    local i = #Coroutines + 1
+    Coroutines[i] = coroutine.create(f)
+    return Coroutines[i]
+end
+
+
 function OnUpdate()
-    -- @todo: implement coroutine dispatch here
-        -- probably also want constatnly rerunning jobs with a set wake up time
-    -- @warning: make sure to not rewrite the thread list when rerunning this file
+    local new_co_list = {}
+    for key, co in pairs(Coroutines) do
+        local status = coroutine.status(co)
+        if status ~= "dead" then
+            coroutine.resume(co)
+            new_co_list[#new_co_list + 1] = co
+        end
+    end
+    Coroutines = new_co_list
 end
 
 )==";