-- /c remote.call("cargo-ship","placeDeepOil",event)
local interface = {}

-- creat deep sea oil
function interface.placeDeepOil(e)
	deep_tiles  = game.surfaces[1].count_tiles_filtered{area=e.area, name = "deepwater"}
	math.randomseed(e.tick)
	if deep_tiles == 1024 then

		freq = 0.03
		if settings.global["oil_frequency"].value == choices.oil_freq.none then
			freq = 0
		elseif settings.global["oil_frequency"].value == choices.oil_freq.v_low then
			freq = 0.0075
		elseif settings.global["oil_frequency"].value == choices.oil_freq.low then
			freq = 0.015
		elseif settings.global["oil_frequency"].value == choices.oil_freq.high then
			freq = 0.06
		elseif settings.global["oil_frequency"].value == choices.oil_freq.v_high then
			freq = 0.12
		end
		freq = freq * 1.25
		mult = 1
		if settings.global["oil_richness"].value == choices.oil_rich.v_poor then
			mult = 0.3
		elseif settings.global["oil_richness"].value == choices.oil_rich.poor then
			mult = 0.7
		elseif settings.global["oil_richness"].value == choices.oil_rich.good then
			mult = 1.8
		elseif settings.global["oil_richness"].value == choices.oil_rich.v_good then
			mult = 3
		end

		r = math.random()
		if r < freq then
			-- create oil in inner part of tile to avoid deep oil too close to land
			local x = math.random(-10,10)
			local y = math.random(-10,10)
			local pos = {e.area.left_top.x+16+x, e.area.left_top.y+16+y}
			local a = (1+freq/(r+(freq/50)))*750000*mult
			game.surfaces[1].create_entity{name="deep_oil", amount=a, position=pos}
		end
	end
end

function init()
    if global.or_power_generator == nil then
        global.or_power_generator = {}
    end
end

script.on_init(function()
	init()
end)
script.on_configuration_changed(function(data)
	init()
end)

function on_creation(event)
	local name = event.created_entity.name
    if name == "or_power" then
        table.insert(global.or_power_generator, event.created_entity)
    end
end

script.on_event(defines.events.on_built_entity, on_creation)
script.on_event(defines.events.on_robot_built_entity, on_creation)

function powerOilRig(e)
	if e.tick % 60 == 0 then
		for _, generator in pairs(global.or_power_generator) do
			generator.fluidbox[1] = {name="steam", amount = 100, temperature=165}
		end
	end
end

remote.add_interface("cargo-ship", interface)





script.on_event("enter_ship", OnEnterShip)
script.on_event(defines.events.on_entity_died, OnDeleted)
script.on_event(defines.events.on_player_mined_entity, OnDeleted)
script.on_event(defines.events.on_robot_mined_entity, OnDeleted)
script.on_event(defines.events.on_chunk_generated, interface.placeDeepOil)
script.on_event(defines.events.on_built_entity, spawnInvisibles)
script.on_event(defines.events.on_tick, powerOilRig)
-- long reach
script.on_event(defines.events.on_runtime_mod_setting_changed, applyChanges)
script.on_event(defines.events.on_player_cursor_stack_changed, increaseReach)
script.on_event(defines.events.on_player_died, deadReach)