ComfyFactorio/modules/splice.lua

-- biter splicing -- storage.splice_modifier can be increased for increased difficulty -- by mewmew

local Event = require 'utils.event'

local biter_fragmentation = {
    ['medium-biter'] = { 'small-biter', 1 },
    ['big-biter'] = { 'medium-biter', 1 },
    ['behemoth-biter'] = { 'big-biter', 1 }
}

local function on_entity_died(event)
    if not event.entity.valid then
        return
    end
    if biter_fragmentation[event.entity.name] then
        local entity = event.entity
        local amount = 1
        if storage.splice_modifier then
            amount = math.ceil(storage.splice_modifier * biter_fragmentation[entity.name][2])
        end
        if amount < 1 then
            return
        end
        for _ = 1, amount, 1 do
            local p = entity.surface.find_non_colliding_position(biter_fragmentation[entity.name][1], entity.position, 3, 0.5)
            if p then
                entity.surface.create_entity({ name = biter_fragmentation[entity.name][1], position = p })
            end
        end
    end
end

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