Airmines should have been set for 45° bounce - the only reason they weren't I guess is they were a clone of some mine values - and mines use traditional behaviour.
Lua scripts for engine testing. These scripts are the same as other Lua scripts
in Hedgewars, but you ought to call `EndLuaTest(TEST_SUCCESSFUL)` or
`EndLuaTest(TEST_FAILED)` when the test is completed.