#62 Spawn Ender Dragon

mods/MAPGEN/mcl_mapgen_core/init.lua

@@ -1247,16 +1247,43 @@ local function generate_clay(minp, maxp, blockseed, voxelmanip_data, voxelmanip_
 	return lvm_used
 end
 
-local function generate_end_exit_portal(pos)
-	local obj = minetest.add_entity(vector.add(pos, vector.new(3, 11, 3)), "mobs_mc:enderdragon")
-	if obj then
-		local dragon_entity = obj:get_luaentity()
-		dragon_entity._initial = true
-		dragon_entity._portal_pos = pos
-	else
-		minetest.log("error", "[mcl_mapgen_core] ERROR! Ender dragon doesn't want to spawn")
+local dragon_spawn_pos = false
+local dragon_spawned, portal_generated = false, false
+
+local function spawn_ender_dragon()
+	local obj = minetest.add_entity(dragon_spawn_pos, "mobs_mc:enderdragon")
+	if not obj then return false end
+	local dragon_entity = obj:get_luaentity()
+	dragon_entity._initial = true
+	dragon_entity._portal_pos = pos
+	return obj
+end
+
+local function try_to_spawn_ender_dragon()
+	if spawn_ender_dragon() then
+		dragon_spawned = true
+		return
 	end
-	mcl_structures.call_struct(pos, "end_exit_portal")
+	minetest.after(2, try_to_spawn_ender_dragon)
+	minetest.log("warning", "[mcl_mapgen_core] WARNING! Ender dragon doesn't want to spawn at "..minetest.pos_to_string(dragon_spawn_pos))
+end
+
+if portal_generated and not dragon_spawned then
+	minetest.after(10, try_to_spawn_ender_dragon)
+end
+
+local function generate_end_exit_portal(pos)
+	if dragon_spawn_pos then return false end
+	dragon_spawn_pos = vector.add(pos, vector.new(3, 11, 3))
+	mcl_structures.call_struct(pos, "end_exit_portal", nil, nil, function()
+		minetest.after(2, function()
+			minetest.emerge_area(vector.subtract(dragon_spawn_pos, {x = 64, y = 12, z = 5}), vector.add(dragon_spawn_pos, {x = 3, y = 3, z = 5}), function(blockpos, action, calls_remaining, param)
+				if calls_remaining > 0 then return end
+				minetest.after(2, try_to_spawn_ender_dragon)
+			end)
+		end)
+	end)
+	portal_generated = true
 end
 
 -- TODO: Try to use more efficient structure generating code

mods/MAPGEN/mcl_structures/init.lua

@@ -69,7 +69,7 @@ local function init_node_construct(pos)
 end
 
 -- The call of Struct
-function mcl_structures.call_struct(pos, struct_style, rotation, pr)
+function mcl_structures.call_struct(pos, struct_style, rotation, pr, callback)
 	minetest.log("action","[mcl_structures] call_struct " .. struct_style.." at "..minetest.pos_to_string(pos))
 	if not rotation then
 		rotation = "random"
@@ -91,13 +91,31 @@ function mcl_structures.call_struct(pos, struct_style, rotation, pr)
 	elseif struct_style == "fossil" then
 		return mcl_structures.generate_fossil(pos, rotation, pr)
 	elseif struct_style == "end_exit_portal" then
-		return mcl_structures.generate_end_exit_portal(pos, rotation)
+		return mcl_structures.generate_end_exit_portal(pos, rotation, pr, callback)
 	elseif struct_style == "end_exit_portal_open" then
 		return mcl_structures.generate_end_exit_portal_open(pos, rotation)
 	elseif struct_style == "end_gateway_portal" then
 		return mcl_structures.generate_end_gateway_portal(pos, rotation)
 	elseif struct_style == "end_portal_shrine" then
 		return mcl_structures.generate_end_portal_shrine(pos, rotation, pr)
+	elseif struct_style == "end_portal" then
+		return mcl_structures.generate_end_portal(pos, rotation, pr)
+	end
+end
+
+function mcl_structures.generate_end_portal(pos, rotation, pr)
+	-- todo: proper facedir
+	local x0, y0, z0 = pos.x - 2, pos.y, pos.z - 2
+	for x = 0, 4 do
+		for z = 0, 4 do
+			if x % 4 == 0 or z % 4 == 0 then
+				if x % 4 ~= 0 or z % 4 ~= 0 then
+					minetest.swap_node({x = x0 + x, y = y0, z = z0 + z}, {name = "mcl_portals:end_portal_frame_eye"})
+				end
+			else
+				minetest.swap_node({x = x0 + x, y = y0, z = z0 + z}, {name = "mcl_portals:portal_end"})
+			end
+		end
 	end
 end
 
@@ -324,9 +342,9 @@ function mcl_structures.generate_fossil(pos, rotation, pr)
 	return mcl_structures.place_schematic(newpos, path, rotation or "random", nil, true)
 end
 
-function mcl_structures.generate_end_exit_portal(pos, rot)
+function mcl_structures.generate_end_exit_portal(pos, rot, pr, callback)
 	local path = modpath.."/schematics/mcl_structures_end_exit_portal.mts"
-	return mcl_structures.place_schematic(pos, path, rot or "0", {["mcl_portals:portal_end"] = "air"}, true)
+	return mcl_structures.place_schematic(pos, path, rot or "0", {["mcl_portals:portal_end"] = "air"}, true, nil, callback)
 end
 
 function mcl_structures.generate_end_exit_portal_open(pos, rot)
@@ -556,7 +574,7 @@ end
 
 -- Debug command
 minetest.register_chatcommand("spawnstruct", {
-	params = "desert_temple | desert_well | igloo | witch_hut | boulder | ice_spike_small | ice_spike_large | fossil | end_exit_portal | end_exit_portal_open | end_gateway_portal | end_portal_shrine | nether_portal | dungeon",
+	params = "desert_temple | desert_well | igloo | witch_hut | boulder | ice_spike_small | ice_spike_large | fossil | end_exit_portal | end_exit_portal_open | end_gateway_portal | end_portal_shrine | end_portal | nether_portal | dungeon",
 	description = S("Generate a pre-defined structure near your position."),
 	privs = {debug = true},
 	func = function(name, param)
@@ -596,6 +614,8 @@ minetest.register_chatcommand("spawnstruct", {
 			mcl_structures.generate_end_portal_shrine(pos, rot, pr)
 		elseif param == "dungeon" and mcl_dungeons and mcl_dungeons.spawn_dungeon then
 			mcl_dungeons.spawn_dungeon(pos, rot, pr)
+		elseif param == "end_portal" then
+			mcl_structures.generate_end_portal(pos, rot, pr)
 		elseif param == "nether_portal" and mcl_portals and mcl_portals.spawn_nether_portal then
 			mcl_portals.spawn_nether_portal(pos, rot, pr, name)
 		elseif param == "" then