ComfyFactorio/modules/the_floor_is_lava.lua

-- stepping or driving on anything other than concrete or stone-path will melt you into molten state -- by mewmew

local Event = require 'utils.event'

local immune_tiles = {
    ['concrete'] = true,
    ['hazard-concrete-left'] = true,
    ['hazard-concrete-right'] = true,
    ['refined-concrete'] = true,
    ['refined-hazard-concrete-left'] = true,
    ['refined-hazard-concrete-right'] = true,
    ['stone-path'] = true
}

local messages = {
    ' likes to play in magma.',
    ' got melted.',
    ' tried to swim in lava.',
    ' was incinerated.',
    " couldn't put the fire out.",
    ' was turned into their molten form.'
}

local function is_entity_on_lava(entity)
    if immune_tiles[entity.surface.get_tile(entity.position).name] then
        return false
    end
    return true
end

local function damage_entity(entity, player)
    if math.random(1, 5) == 1 then
        entity.surface.create_entity({name = 'fire-flame', position = player.position})
    end
    entity.health = entity.health - entity.prototype.max_health / 75
    if entity.health <= 0 then
        if entity.name == 'character' then
            game.print(player.name .. messages[math.random(1, #messages)], {r = 200, g = 0, b = 0})
        end
        entity.die()
    end
end

local function process_player(player)
    if not player.character then
        return
    end
    local entity = player.character
    if player.vehicle then
        if player.vehicle.type == 'car' then
            entity = player.vehicle
        else
            return
        end
    end
    if is_entity_on_lava(entity) then
        damage_entity(entity, player)
    end
end

--local function on_player_changed_position(event)
--if math.random(1,2) == 1 then return end
--local player = game.players[event.player_index]
--process_player(player)
--end

local function tick()
    for _, p in pairs(game.connected_players) do
        process_player(p)
    end
end

local function on_player_joined_game(event)
    local player = game.players[event.player_index]

    if player.online_time == 0 then
        player.insert({name = 'stone-brick', count = 64})
    end
end

Event.on_nth_tick(5, tick)
--Event.add(defines.events.on_player_changed_position, on_player_changed_position)
Event.add(defines.events.on_player_joined_game, on_player_joined_game)