sun type planet

init.lua

@@ -12,6 +12,10 @@ local MP = minetest.get_modpath("planetoidgen")
 dofile(MP.."/planets.lua")
 dofile(MP.."/vacuum.lua")
 dofile(MP.."/mapgen.lua")
+
+dofile(MP.."/nodes/sun.lua")
+
 dofile(MP.."/planets/classm.lua")
+dofile(MP.."/planets/sun.lua")
 
 print("[OK] Planetoidgen")

mapgen.lua

@@ -51,6 +51,6 @@ minetest.register_on_generated(function(minp, maxp, seed)
 	local t1 = minetest.get_us_time()
 	local micros = t1 -t0
 
-	minetest.log("debug", "[planetoidgen] mapgen for " .. minetest.pos_to_string(minp) .. " took " .. micros .. " us")
+	minetest.log("action", "[planetoidgen] mapgen for " .. minetest.pos_to_string(minp) .. ", type: " .. planet.type .. " took " .. micros .. " us")
 
 end)

nodes/sun.lua

@@ -0,0 +1,38 @@
+
+minetest.register_node("planetoidgen:sun", {
+	description = "Sun matter",
+	tiles = {
+		{
+			name = "default_lava_source_animated.png",
+			backface_culling = false,
+			animation = {
+				type = "vertical_frames",
+				aspect_w = 16,
+				aspect_h = 16,
+				length = 3.0,
+			},
+		},
+		{
+			name = "default_lava_source_animated.png",
+			backface_culling = true,
+			animation = {
+				type = "vertical_frames",
+				aspect_w = 16,
+				aspect_h = 16,
+				length = 3.0,
+			},
+		},
+	},
+	paramtype = "light",
+	light_source = default.LIGHT_MAX,
+	walkable = false,
+	pointable = false,
+	diggable = false,
+	buildable_to = true,
+	is_ground_content = false,
+	drop = "",
+	drowning = 1,
+	damage_per_second = 4 * 2,
+	post_effect_color = {a = 191, r = 255, g = 64, b = 0},
+	groups = { radioactive = 20, igniter = 1 }
+})

planets.example.json

@@ -6,5 +6,6 @@
   },
   "name": "xy",
   "type": "class-m",
-  "radius": 300
+  "radius": 300,
+  "airshell": true
 }]

planets/sun.lua

@@ -0,0 +1,34 @@
+
+local c_ignore = minetest.get_content_id("ignore")
+local c_air = minetest.get_content_id("air")
+local c_sun = minetest.get_content_id("planetoidgen:sun")
+
+
+planetoidgen.planettypes["sun"] = function(planet, minp, maxp, seed)
+
+	local vm, emin, emax = minetest.get_mapgen_object("voxelmanip")
+	local data = vm:get_data()
+	local area = VoxelArea:new{MinEdge=emin, MaxEdge=emax}
+
+	for z=minp.z,maxp.z do
+	for x=minp.x,maxp.x do
+	for y=minp.y,maxp.y do
+		local i = area:index(x,y,z)
+
+		local pos = area:position(i)
+		local distance_to_center = vector.distance(pos, planet.pos)
+
+		-- check if inside radius
+		if distance_to_center <= planet.radius then
+      data[i] = c_sun
+		end -- distance check
+  end--y
+  end--x
+	end--z
+
+
+	vm:set_data(data)
+
+	vm:set_lighting({day=15, night=0})
+	vm:write_to_map()
+end

vacuum.lua

@@ -10,7 +10,12 @@ if has_vacuum_mod then
 
       if distance < planet.radius+160 then
         -- planet is here, not space (plus safety margin for air shell)
-        return false
+        if planet.airshell then
+          return false
+        else
+          -- no airshell == space
+          return true
+        end
       end
     end
 
@@ -24,7 +29,7 @@ if has_vacuum_mod then
 
       if distance < planet.radius+10 and distance > planet.radius-10 then
         -- no air/vacuum interaction at planet boundary
-        return true
+        return planet.airshell
       end
     end