Cleanup map_gen/shared (#421)

* Cleanup whitespaces+tabs

* Tabs to spaces

map_gen/shared/chunk_utils.lua

@@ -1,10 +1,10 @@
 function removeChunk(event)
-	local surface = event.surface
+    local surface = event.surface
-	local tiles = {}
+    local tiles = {}
-	for x = event.area.left_top.x, event.area.right_bottom.x do
+    for x = event.area.left_top.x, event.area.right_bottom.x do
-		for y = event.area.left_top.y, event.area.right_bottom.y do
+        for y = event.area.left_top.y, event.area.right_bottom.y do
-			table.insert(tiles, {name = "out-of-map", position = {x,y}})
+            table.insert(tiles, {name = "out-of-map", position = {x,y}})
-		end
+        end
-	end
+    end
-	surface.set_tiles(tiles)
+    surface.set_tiles(tiles)
 end

map_gen/shared/perlin_noise.lua

@@ -77,7 +77,7 @@ function Perlin.noise(x, y, z)
     local v = fade(y)
     local w = fade(z)
 
-    -- Hash all 8 unit cube coordinates surrounding input coordinate    
+    -- Hash all 8 unit cube coordinates surrounding input coordinate
     local A, AA, AB, AAA, ABA, AAB, ABB, B, BA, BB, BAA, BBA, BAB, BBB
     A   = p[xi  ] + yi
     AA  = p[A   ] + zi

map_gen/shared/simplex_noise.lua

@@ -6,101 +6,101 @@ local Simplex = {}
 -- 2D simplex noise
 
 local grad3 = {
-	{1,1,0},{-1,1,0},{1,-1,0},{-1,-1,0},
+    {1,1,0},{-1,1,0},{1,-1,0},{-1,-1,0},
-	{1,0,1},{-1,0,1},{1,0,-1},{-1,0,-1},
+    {1,0,1},{-1,0,1},{1,0,-1},{-1,0,-1},
-	{0,1,1},{0,-1,1},{0,1,-1},{0,-1,-1}
+    {0,1,1},{0,-1,1},{0,1,-1},{0,-1,-1}
 }
 
 local  p = {151,160,137,91,90,15,
-	131,13,201,95,96,53,194,233,7,225,140,36,103,30,69,142,8,99,37,240,21,10,23,
+    131,13,201,95,96,53,194,233,7,225,140,36,103,30,69,142,8,99,37,240,21,10,23,
-	190, 6,148,247,120,234,75,0,26,197,62,94,252,219,203,117,35,11,32,57,177,33,
+    190, 6,148,247,120,234,75,0,26,197,62,94,252,219,203,117,35,11,32,57,177,33,
-	88,237,149,56,87,174,20,125,136,171,168, 68,175,74,165,71,134,139,48,27,166,
+    88,237,149,56,87,174,20,125,136,171,168, 68,175,74,165,71,134,139,48,27,166,
-	77,146,158,231,83,111,229,122,60,211,133,230,220,105,92,41,55,46,245,40,244,
+    77,146,158,231,83,111,229,122,60,211,133,230,220,105,92,41,55,46,245,40,244,
-	102,143,54, 65,25,63,161, 1,216,80,73,209,76,132,187,208, 89,18,169,200,196,
+    102,143,54, 65,25,63,161, 1,216,80,73,209,76,132,187,208, 89,18,169,200,196,
-	135,130,116,188,159,86,164,100,109,198,173,186, 3,64,52,217,226,250,124,123,
+    135,130,116,188,159,86,164,100,109,198,173,186, 3,64,52,217,226,250,124,123,
-	5,202,38,147,118,126,255,82,85,212,207,206,59,227,47,16,58,17,182,189,28,42,
+    5,202,38,147,118,126,255,82,85,212,207,206,59,227,47,16,58,17,182,189,28,42,
-	223,183,170,213,119,248,152, 2,44,154,163, 70,221,153,101,155,167, 43,172,9,
+    223,183,170,213,119,248,152, 2,44,154,163, 70,221,153,101,155,167, 43,172,9,
-	129,22,39,253, 19,98,108,110,79,113,224,232,178,185, 112,104,218,246,97,228,
+    129,22,39,253, 19,98,108,110,79,113,224,232,178,185, 112,104,218,246,97,228,
-	251,34,242,193,238,210,144,12,191,179,162,241, 81,51,145,235,249,14,239,107,
+    251,34,242,193,238,210,144,12,191,179,162,241, 81,51,145,235,249,14,239,107,
-	49,192,214, 31,181,199,106,157,184, 84,204,176,115,121,50,45,127, 4,150,254,
+    49,192,214, 31,181,199,106,157,184, 84,204,176,115,121,50,45,127, 4,150,254,
-	138,236,205,93,222,114,67,29,24,72,243,141,128,195,78,66,215,61,156,180}
+    138,236,205,93,222,114,67,29,24,72,243,141,128,195,78,66,215,61,156,180}
 local perm = {}
 for i=0,511 do
-	perm[i+1] = p[bit32.band(i, 255) + 1]
+    perm[i+1] = p[bit32.band(i, 255) + 1]
 end
 
 local function dot(g, ...)
-	local v = {...}
+    local v = {...}
-	local sum = 0
+    local sum = 0
-	for i=1,#v do
+    for i=1,#v do
-		sum = sum + v[i] * g[i]
+        sum = sum + v[i] * g[i]
-	end
+    end
-	return sum
+    return sum
 end
 
 local F2 = 0.5*(math.sqrt(3.0)-1.0)
 local G2 = (3.0-math.sqrt(3.0))/6.0
 function Simplex.d2(xin, yin,seed)
-	xin = xin + seed
+    xin = xin + seed
-	yin = yin + seed
+    yin = yin + seed
-	local n0, n1, n2	-- Noise contributions from the three corners
+    local n0, n1, n2    -- Noise contributions from the three corners
-	-- Skew the input space to determine which simplex cell we're in
+    -- Skew the input space to determine which simplex cell we're in
-	local s = (xin+yin)*F2; -- Hairy factor for 2D
+    local s = (xin+yin)*F2; -- Hairy factor for 2D
-	local i = math.floor(xin+s)
+    local i = math.floor(xin+s)
-	local j = math.floor(yin+s)
+    local j = math.floor(yin+s)
-	local t = (i+j)*G2
+    local t = (i+j)*G2
-	local X0 = i-t -- Unskew the cell origin back to (x,y) space
+    local X0 = i-t -- Unskew the cell origin back to (x,y) space
-	local Y0 = j-t
+    local Y0 = j-t
-	local x0 = xin-X0 -- The x,y distances from the cell origin
+    local x0 = xin-X0 -- The x,y distances from the cell origin
-	local y0 = yin-Y0
+    local y0 = yin-Y0
-	-- For the 2D case, the simplex shape is an equilateral triangle.
+    -- For the 2D case, the simplex shape is an equilateral triangle.
-	-- Determine which simplex we are in.
+    -- Determine which simplex we are in.
-	local i1, j1 -- Offsets for second (middle) corner of simplex in (i,j) coords
+    local i1, j1 -- Offsets for second (middle) corner of simplex in (i,j) coords
-	if x0 > y0 then
+    if x0 > y0 then
-		i1 = 1
+        i1 = 1
-		j1 = 0 -- lower triangle, XY order: (0,0)->(1,0)->(1,1)
+        j1 = 0 -- lower triangle, XY order: (0,0)->(1,0)->(1,1)
-	else
+    else
-		i1 = 0
+        i1 = 0
-		j1 = 1
+        j1 = 1
-	end-- upper triangle, YX order: (0,0)->(0,1)->(1,1)
+    end-- upper triangle, YX order: (0,0)->(0,1)->(1,1)
-	-- A step of (1,0) in (i,j) means a step of (1-c,-c) in (x,y), and
+    -- A step of (1,0) in (i,j) means a step of (1-c,-c) in (x,y), and
-	-- a step of (0,1) in (i,j) means a step of (-c,1-c) in (x,y), where
+    -- a step of (0,1) in (i,j) means a step of (-c,1-c) in (x,y), where
-	-- c = (3-sqrt(3))/6
+    -- c = (3-sqrt(3))/6
-	local x1 = x0 - i1 + G2 -- Offsets for middle corner in (x,y) unskewed coords
+    local x1 = x0 - i1 + G2 -- Offsets for middle corner in (x,y) unskewed coords
-	local y1 = y0 - j1 + G2
+    local y1 = y0 - j1 + G2
-	local x2 = x0 - 1 + 2 * G2 -- Offsets for last corner in (x,y) unskewed coords
+    local x2 = x0 - 1 + 2 * G2 -- Offsets for last corner in (x,y) unskewed coords
-	local y2 = y0 - 1 + 2 * G2
+    local y2 = y0 - 1 + 2 * G2
-	-- Work out the hashed gradient indices of the three simplex corners
+    -- Work out the hashed gradient indices of the three simplex corners
-	local ii = bit32.band(i, 255)
+    local ii = bit32.band(i, 255)
-	local jj = bit32.band(j, 255)
+    local jj = bit32.band(j, 255)
-	local gi0 = perm[ii + perm[jj+1]+1] % 12
+    local gi0 = perm[ii + perm[jj+1]+1] % 12
-	local gi1 = perm[ii + i1 + perm[jj + j1+1]+1] % 12
+    local gi1 = perm[ii + i1 + perm[jj + j1+1]+1] % 12
-	local gi2 = perm[ii + 1 + perm[jj + 1+1]+1] % 12
+    local gi2 = perm[ii + 1 + perm[jj + 1+1]+1] % 12
-	-- Calculate the contribution from the three corners
+    -- Calculate the contribution from the three corners
-	local t0 = 0.5 - x0 * x0 - y0 * y0
+    local t0 = 0.5 - x0 * x0 - y0 * y0
-	if t0 < 0 then
+    if t0 < 0 then
-		n0 = 0.0
+        n0 = 0.0
-	else
+    else
-		t0 = t0 * t0
+        t0 = t0 * t0
-		n0 = t0 * t0 * dot(grad3[gi0+1], x0, y0) -- (x,y) of grad3 used for 2D gradient
+        n0 = t0 * t0 * dot(grad3[gi0+1], x0, y0) -- (x,y) of grad3 used for 2D gradient
-	end
+    end
-	local t1 = 0.5 - x1 * x1 - y1 * y1
+    local t1 = 0.5 - x1 * x1 - y1 * y1
-	if t1 < 0 then
+    if t1 < 0 then
-		n1 = 0.0
+        n1 = 0.0
-	else
+    else
-		t1 = t1 * t1
+        t1 = t1 * t1
-		n1 = t1 * t1 * dot(grad3[gi1+1], x1, y1)
+        n1 = t1 * t1 * dot(grad3[gi1+1], x1, y1)
-	end
+    end
-	local t2 = 0.5 - x2 * x2 - y2 * y2
+    local t2 = 0.5 - x2 * x2 - y2 * y2
-	if t2 < 0 then
+    if t2 < 0 then
-		n2 = 0.0
+        n2 = 0.0
-	else
+    else
-		t2 = t2 * t2
+        t2 = t2 * t2
-		n2 = t2 * t2 * dot(grad3[gi2+1], x2, y2)
+        n2 = t2 * t2 * dot(grad3[gi2+1], x2, y2)
-	end
+    end
-	-- Add contributions from each corner to get the final noise value.
+    -- Add contributions from each corner to get the final noise value.
-	-- The result is scaled to return values in the interval [-1,1].
+    -- The result is scaled to return values in the interval [-1,1].
-	return 70.0 * (n0 + n1 + n2)
+    return 70.0 * (n0 + n1 + n2)
 end
 
 return Simplex