ComfyFactorio/maps/scrap_towny_ffa/vehicles.lua

local Event = require 'utils.event'

local Public = {}

local function on_player_driving_changed_state(event)
    local player = game.players[event.player_index]
    if not player or not player.valid then
        return
    end
    local vehicle = player.vehicle
    if player.force.name ~= 'player' and player.force.name ~= 'rogue' then
        return
    end
    if vehicle and vehicle.valid then
        -- player entered a vehicle
        if vehicle.name == 'locomotive' or vehicle.name == 'cargo-wagon' or vehicle.name == 'fluid-wagon' then
            vehicle.force = 'neutral'
        else
            -- includes cars, tanks and artillery-wagons
            vehicle.force = player.force.name
        end
    else
        -- player exited a vehicle
        vehicle = event.entity
        vehicle.force = 'neutral'
    end
end

Event.add(defines.events.on_player_driving_changed_state, on_player_driving_changed_state)

return Public