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RedMew/locale/gen_shape/donut.lua
2017-07-18 21:29:12 +02:00

36 lines
928 B
Lua

--Donut script by Neko_Baron - tested on RedMew
--change these to mess with ring/shape
local donut_radius = 1600
local donut_width = 128
--dont touch these
local donut_half = donut_width * 0.5
local x_offset = donut_radius - donut_half
local donut_low = x_offset^2
local donut_high = (x_offset+donut_width)^2
function run_shape_module(event)
local area = event.area
local surface = event.surface
local tiles = {}
local top_left = area.left_top --make a more direct reference
for x = top_left.x-1, top_left.x + 32 do
for y = top_left.y-1, top_left.y + 32 do
local x_off = x - donut_radius
local distance = x_off^2 + y^2 -- we dont bother to get sqr of it, because we just want the cubed answer to compare to donut_low/high
if distance > donut_high or distance < donut_low then
table.insert(tiles, {name = "out-of-map", position = {x,y}})
end
end
end
surface.set_tiles(tiles)
return true
end