Add cloud layers. Add teleporter graphics.

cloudgen.lua

@@ -0,0 +1,61 @@
+dofile(fun_caves.path .. "/deco_clouds.lua")
+
+
+local rand = math.random
+local min = math.min
+local floor = math.floor
+local ceil = math.ceil
+local abs = math.ceil
+local map_max = 31000
+
+
+local cloud_noise_1 = {offset = 10, scale = 10, seed = 3721, spread = {x = 120, y = 120, z = 120}, octaves = 3, persist = 1, lacunarity = 2}
+
+fun_caves.cloudgen = function(minp, maxp, data, area, node)
+	local clouds = ceil(minp.y / floor(map_max / 7))
+	if abs(clouds * floor(map_max / 7) - minp.y) > 80 then
+		return
+	end
+
+	local csize = vector.add(vector.subtract(maxp, minp), 1)
+
+	local cloud_1 = minetest.get_perlin_map(cloud_noise_1, {x=csize.x, y=csize.z}):get2dMap_flat({x=minp.x, y=minp.z})
+
+	local write = false
+
+	local index = 0
+	local index3d = 0
+	for z = minp.z, maxp.z do
+		for x = minp.x, maxp.x do
+			index = index + 1
+			--index3d = noise_area:index(x, minp.y-1, z)
+			index3d = (z - minp.z) * (csize.y + 2) * csize.x + (x - minp.x) + 1
+			--local height = cloud_1[index] + minp.y + 32
+			local ivm = area:index(x, minp.y-1, z)
+
+			if cloud_1[index] > 0 then
+				for y = minp.y, maxp.y do
+					local dy = y - minp.y
+					if dy > 32 and cloud_1[index] > 15 then
+						if dy < 47 then
+							if dy < 47 - (cloud_1[index] - 15) then
+								data[ivm] = node['fun_caves:cloud']
+							else
+								data[ivm] = node['default:water_source']
+							end
+							write = true
+						end
+					elseif dy >= 32 - cloud_1[index] and dy <= 32 + cloud_1[index] then
+						data[ivm] = node['fun_caves:cloud']
+						write = true
+					end
+
+					ivm = ivm + area.ystride
+					index3d = index3d + csize.x
+				end
+			end
+		end
+	end
+
+	return write
+end