Continuing to implement new steering, removed common.txt, inside functions have been moved to separate files

koptilnya/libs/constants.txt

@@ -0,0 +1 @@
+NULL_ENTITY = entity(0)

koptilnya/libs/table.txt

@@ -17,3 +17,28 @@ function table.chunk(tbl, size)
 
     return result
 end
+
+function table.deepcopy(orig)
+    local orig_type = type(orig)
+    local copy
+    if orig_type == 'table' then
+        copy = {}
+        for orig_key, orig_value in next, orig, nil do
+            copy[table.deepcopy(orig_key)] = table.deepcopy(orig_value)
+        end
+        setmetatable(copy, table.deepcopy(getmetatable(orig)))
+    else -- number, string, boolean, etc
+        copy = orig
+    end
+    return copy
+end
+
+function table.merge(table1, table2)
+    local newTable = table.deepcopy(table1)
+
+    for k, v in pairs(table2) do
+        newTable[k] = v
+    end
+
+    return newTable
+end