UPDATE

koptilnya/libs/constants.txt

@@ -1,3 +1,5 @@
+--@name koptilnya/libs/constants
+
 NULL_ENTITY = entity(0)
 CURRENT_PLAYER = player()
 OWNER = owner()
@@ -7,3 +9,5 @@ RAD_TO_RPM = 9.5493
 RPM_TO_RAD = 0.10472
 UNITS_PER_METER = 39.37
 UNITS_TO_METERS = 0.01905
+KG_TO_N = 9.80665
+KG_TO_KN = 0.00980665

koptilnya/libs/perma.txt

@@ -1,3 +1,4 @@
+--@name /koptilnya/libs/perma
 -- @include /koptilnya/libs/table.txt
 -- @shared
 

koptilnya/libs/table.txt

@@ -82,6 +82,8 @@ function table.find(tbl, predicate)
             return field
         end
     end
+
+    return nil
 end
 
 function table.reduce(tbl, reducer, init)
@@ -93,3 +95,17 @@ function table.reduce(tbl, reducer, init)
 
     return accum
 end
+
+function table.every(tbl, predicate)
+    for i, field in pairs(tbl) do
+        if not predicate(field, i) then
+            return false
+        end
+    end
+
+    return true
+end
+
+function table.some(tbl, predicate)
+    return table.find(tbl, predicate) ~= nil
+end