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more safety with table_contains

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HybridDog 2014-02-10 18:26:49 +01:00
parent cc62ddeed8
commit 63fca47f33
1 changed files with 12 additions and 3 deletions
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15
init.lua
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@ -89,13 +89,22 @@ local function return_line(pos, dir, range) --range ~= length
return tab
end
local function table_contains2(t, v)
for i = #t, 1, -1 do
if t[i] == v then
return true
end
end
return false
end
local function return_fine_line(pos, dir, range, scale)
local ps1 = return_line(vector.round(vector.multiply(pos, scale)), dir, range*scale)
local ps2 = {vector.round(vector.divide(ps1[1], scale))}
local ps2_num = 2
local ps2 = {}
local ps2_num = 1
for _,p1 in ipairs(ps1) do
local p2 = vector.round(vector.divide(p1, scale))
if p2 ~= ps2[ps2_num-1] then
if not table_contains2(ps2, p2) then
ps2[ps2_num] = p2
ps2_num = ps2_num+1
end