Shipped with TRX as data/trx/ship/games/tr4/scripts/lake.lua.
trx.events.on_game_start(function()
trx.items[16].properties.pickup_mode = trx.items.PickupMode.PLINTH_LOW
trx.items[33].properties.pickup_mode = trx.items.PickupMode.PLINTH_LOW
trx.items[34].properties.pickup_mode = trx.items.PickupMode.PLINTH_LOW
trx.items[35].properties.pickup_mode = trx.items.PickupMode.PLINTH_LOW
trx.items[70].properties.pickup_mode = trx.items.PickupMode.PLINTH_LOW
trx.items[71].properties.pickup_mode = trx.items.PickupMode.PLINTH_LOW
trx.objects.animating_16.properties.collidable = false
end)