--atoll-- mewmew made this --

require 'modules.spawners_contain_biters'
require 'modules.surrounded_by_worms'

local simplex_noise = require 'utils.math.simplex_noise'
simplex_noise = simplex_noise.d2
local Event = require 'utils.event'
local table_insert = table.insert
local math_random = math.random

local function get_noise(name, pos)
    local seed = game.surfaces[1].map_gen_settings.seed
    local noise_seed_add = 25000
    seed = seed + noise_seed_add
    if name == 'ocean' then
        local noise = {}
        noise[1] = simplex_noise(pos.x * 0.005, pos.y * 0.005, seed)
        seed = seed + noise_seed_add
        noise[2] = simplex_noise(pos.x * 0.01, pos.y * 0.01, seed)
        seed = seed + noise_seed_add
        noise[3] = simplex_noise(pos.x * 0.05, pos.y * 0.05, seed)
        seed = seed + noise_seed_add
        noise[4] = simplex_noise(pos.x * 0.1, pos.y * 0.1, seed)
        noise = noise[1] + noise[2] * 0.3 + noise[3] * 0.2 + noise[4] * 0.1
        --noise = noise * 0.5
        return noise
    end
end

local function on_player_joined_game(event)
    local player = game.players[event.player_index]
    if not storage.map_init_done then
        game.forces['player'].technologies['landfill'].researched = true
        storage.average_worm_amount_per_chunk = 6
        storage.map_init_done = true
    end

    if player.online_time == 0 then
        --player.insert{name = 'iron-axe', count = 1}
        player.insert { name = 'landfill', count = 200 }
        player.insert { name = 'iron-plate', count = 32 }
        player.insert { name = 'iron-gear-wheel', count = 16 }
    end
end

local function on_marked_for_deconstruction(event)
    if event.entity.name == 'fish' then
        event.entity.cancel_deconstruction(game.players[event.player_index].force.name)
    end
end

local types = { 'resource', 'simple-entity', 'player' }
local function on_chunk_generated(event)
    local surface = event.surface
    local left_top = event.area.left_top
    local tiles = {}
    local entities = {}

    for x = 0, 31, 1 do
        for y = 0, 31, 1 do
            local tile_to_insert = false
            local pos = { x = left_top.x + x, y = left_top.y + y }
            local ocean_noise = get_noise('ocean', pos)
            if ocean_noise > -0.5 then
                tile_to_insert = 'water'
                if ocean_noise > -0.25 then
                    tile_to_insert = 'deepwater'
                end
            end
            if tile_to_insert then
                local count = surface.count_entities_filtered({ area = { { pos.x - 1, pos.y - 1 }, { pos.x + 1.99, pos.y + 1.99 } }, limit = 1, type = types })
                if count == 0 then
                    table_insert(tiles, { name = tile_to_insert, position = pos })
                    if math_random(1, 128) == 1 then
                        table_insert(entities, { name = 'fish', position = pos })
                    end
                end
            end
        end
    end
    surface.set_tiles(tiles, true)

    for _, entity in pairs(entities) do
        surface.create_entity(entity)
    end

    if not storage.spawn_generated and left_top.x <= -64 then
        --map_functions.draw_noise_tile_circle({x = 0, y = 0}, "concrete", surface, 5)
        --map_functions.draw_smoothed_out_ore_circle({x = -32, y = -32}, "copper-ore", surface, 15, 2500)
        --map_functions.draw_smoothed_out_ore_circle({x = -32, y = 32}, "iron-ore", surface, 15, 2500)
        --map_functions.draw_smoothed_out_ore_circle({x = 32, y = 32}, "coal", surface, 15, 2500)
        --map_functions.draw_smoothed_out_ore_circle({x = 32, y = -32}, "stone", surface, 15, 2500)
        --map_functions.draw_oil_circle({x = 0, y = 0}, "crude-oil", surface, 5, 200000)
        storage.spawn_generated = true
    end
end

Event.add(defines.events.on_marked_for_deconstruction, on_marked_for_deconstruction)
Event.add(defines.events.on_player_joined_game, on_player_joined_game)
Event.add(defines.events.on_chunk_generated, on_chunk_generated)