Change water level.

init.lua

@@ -61,7 +61,7 @@ if not minetest.set_mapgen_setting then
 end
 
 minetest.register_on_mapgen_init(function(mgparams)
-	minetest.set_mapgen_params({mgname="singlenode", flags="nolight"})
+	minetest.set_mapgen_params({mgname="singlenode", water_level=-31000, flags="nolight"})
 end)
 
 

mapgen.lua

@@ -21,7 +21,6 @@ local glass = {"loud_walking:sky_scrith", "loud_walking:cloud_scrith", "loud_wal
 
 local data = {}
 local p2data = {}  -- vm rotation data buffer
-local lightmap = {}
 local vm, emin, emax, a, csize, heightmap, biomemap
 local div_sz_x, div_sz_z, minp, maxp, terrain, cave
 local cloud
@@ -190,7 +189,6 @@ local function place_schematic(pos, schem, center)
 								local prob = schem.data[isch].prob or schem.data[isch].param1 or 255
 								if prob >= math.random(255) and schem.data[isch].name ~= "air" then
 									data[ivm] = node[schem.data[isch].name]
-									lightmap[ivm] = 0
 								end
 								local param2 = schem.data[isch].param2 or 0
 								p2data[ivm] = param2
@@ -283,8 +281,7 @@ local function generate(p_minp, p_maxp, seed)
 	a = VoxelArea:new({MinEdge = emin, MaxEdge = emax})
 	csize = vector.add(vector.subtract(maxp, minp), 1)
 
-	--vm:set_lighting({day = 0, night = 0}, minp, maxp)
-	lightmap = vm:get_light_data()
+	vm:set_lighting({day = 0, night = 0}, minp, maxp)
 
 	local ground = half_pod.y
 	local heights = {}
@@ -315,7 +312,6 @@ local function generate(p_minp, p_maxp, seed)
 				local dy = y - minp.y
 				local fdy = y % fcsize.y
 				local py = math_floor(y / fcsize.y)
-				lightmap[ivm] = 0
 				if py ~= last_py or px ~= last_px or pz ~= last_pz then
 					biome, cave_lining = get_biome(x, y, z)
 				end
@@ -353,7 +349,6 @@ local function generate(p_minp, p_maxp, seed)
 					end
 				elseif math.min(fdx, pod_size.x - fdx) + math.min(fdy, pod_size.y - fdy) + math.min(fdz, pod_size.z - fdz) < bevel then
 					--data[ivm] = node['air']
-					lightmap[ivm] = 0
 					in_cave = false
 				elseif (fdx == 0 or fdx == pod_size.x - 1) or (fdz == 0 or fdz == pod_size.z - 1) or (fdy == 0 or fdy == pod_size.y - 1) or math.min(fdx, pod_size.x - fdx) + math.min(fdy, pod_size.y - fdy) + math.min(fdz, pod_size.z - fdz) < bevel + 1 then
 					if math_abs(fdy - half_pod.y - 2) < 2 and (fdz == half_pod.z or fdx == half_pod.x) then
@@ -363,10 +358,8 @@ local function generate(p_minp, p_maxp, seed)
 							data[ivm] = node[glass[3]]
 						elseif fdy < half_pod.y then
 							data[ivm] = node["loud_walking:scrith"]
-							lightmap[ivm] = 0
 						elseif biome == "underground" then
 							data[ivm] = node["loud_walking:scrith"]
-							lightmap[ivm] = 0
 						elseif fdy == pod_size.y - 1 then
 							data[ivm] = node[glass[cloud[index] < cloud_i and 1 or 2]]
 						else
@@ -440,17 +433,13 @@ local function generate(p_minp, p_maxp, seed)
 						--data[ivm] = node["air"]
 					end
 					in_cave = true
-					lightmap[ivm] = 0
 				elseif cave_lining and cave[index3d] ^ 2 > (biome == "underground" and 0.4 or 1.2 - math.sin(fdy / (half_pod.y * 0.2))) then
 					data[ivm] = node[cave_lining]
-					lightmap[ivm] = 0
 				elseif fdy > height + ground - depth_top then
 					data[ivm] = node[node_top]
-					lightmap[ivm] = 0
 					in_cave = false
 				elseif fdy > height + ground - depth_filler - depth_top then
 					data[ivm] = node[node_filler]
-					lightmap[ivm] = 0
 					in_cave = false
 				else
 					data[ivm] = node[node_stone]
@@ -461,7 +450,6 @@ local function generate(p_minp, p_maxp, seed)
 					elseif in_cave and not (ocean or swamp or beach) and node_stone == "default:ice" and math.random(10) == 1 then
 						data[ivm - a.ystride] = node["loud_walking:icicle_down"]
 					end
-					lightmap[ivm] = 0
 					in_cave = false
 				end
 
@@ -590,7 +578,7 @@ local function generate(p_minp, p_maxp, seed)
 	vm:set_data(data)
 	minetest.generate_ores(vm, minp, maxp)
 	--vm:set_param2_data(p2data)
-	vm:set_light_data(lightmap)
+	vm:set_lighting({day = 0, night = 0}, minp, maxp)
 	vm:update_liquids()
 	vm:calc_lighting(minp, maxp, false)
 	vm:write_to_map()