Signed-off-by: TenPlus1 <kinsellaja@yahoo.com>

1 files changed, 159 insertions, 0 deletions

diff --git a/spawner.lua b/spawner.lua
new file mode 100644
index 0000000..5d13afc
--- /dev/null
+++ b/spawner.lua
@@ -0,0 +1,159 @@
+-- mob spawner
+
+local spawner_default = "mobs:pumba 10 15 0 0"
+
+minetest.register_node("mobs:spawner", {
+	tiles = {"mob_spawner.png"},
+	drawtype = "glasslike",
+	paramtype = "light",
+	walkable = true,
+	description = "Mob Spawner",
+	groups = {cracky = 1},
+
+	on_construct = function(pos)
+
+		local meta = minetest.get_meta(pos)
+
+		-- text entry formspec
+		meta:set_string("formspec", "field[text;Mob MinLight MaxLight Amount PlayerDist;${command}]")
+		meta:set_string("infotext", "Spawner Not Active (enter settings)")
+		meta:set_string("command", spawner_default)
+	end,
+
+	on_right_click = function(pos, placer)
+
+		if minetest.is_protected(pos, placer:get_player_name()) then
+			return
+		end
+	end,
+
+	on_receive_fields = function(pos, formname, fields, sender)
+
+		if not fields.text or fields.text == "" then
+			return
+		end
+
+		local meta = minetest.get_meta(pos)
+		local comm = fields.text:split(" ")
+		local name = sender:get_player_name()
+
+		if minetest.is_protected(pos, name) then
+			minetest.record_protection_violation(pos, name)
+			return
+		end
+
+		local mob = comm[1] -- mob to spawn
+		local mlig = tonumber(comm[2]) -- min light
+		local xlig = tonumber(comm[3]) -- max light
+		local num = tonumber(comm[4]) -- total mobs in area
+		local pla = tonumber(comm[5]) -- player distance (0 to disable)
+		local yof = tonumber(comm[6]) -- Y offset to spawn mob
+
+		if mob and mob ~= "" and mobs.spawning_mobs[mob] == true
+		and num and num >= 0 and num <= 10
+		and mlig and mlig >= 0 and mlig <= 15
+		and xlig and xlig >= 0 and xlig <= 15
+		and pla and pla >=0 and pla <= 20
+		and yof > -10 and yof < 10 then
+
+			meta:set_string("command", fields.text)
+			meta:set_string("infotext", "Spawner Active (" .. mob .. ")")
+
+		else
+			minetest.chat_send_player(name, "Mob Spawner settings failed!")
+			minetest.chat_send_player(name, "> name min_light[0-14] max_light[0-14] max_mobs_in_area[0 to disable] distance[1-20] y_offset[-10 to 10]")
+		end
+	end,
+})
+
+-- spawner abm
+minetest.register_abm({
+	nodenames = {"mobs:spawner"},
+	interval = 10,
+	chance = 4,
+	catch_up = false,
+
+	action = function(pos, node, active_object_count, active_object_count_wider)
+
+		-- check objects inside 9x9 area around spawner
+		local objs = minetest.get_objects_inside_radius(pos, 9)
+
+		-- get meta and command
+		local meta = minetest.get_meta(pos)
+		local comm = meta:get_string("command"):split(" ")
+
+		-- get settings from command
+		local mob = comm[1]
+		local mlig = tonumber(comm[2])
+		local xlig = tonumber(comm[3])
+		local num = tonumber(comm[4])
+		local pla = tonumber(comm[5]) or 0
+		local yof = tonumber(comm[6]) or 0
+
+		-- if amount is 0 then do nothing
+		if num == 0 then
+			return
+		end
+
+		local count = 0
+		local ent = nil
+
+		-- count mob objects of same type in area
+		for k, obj in pairs(objs) do
+
+			ent = obj:get_luaentity()
+
+			if ent and ent.name == mob then
+				count = count + 1
+			end
+		end
+
+		-- is there too many of same type?
+		if count >= num then
+			return
+		end
+
+		-- spawn mob if player detected and in range
+		if pla > 0 then
+
+			local in_range = 0
+			local objs = minetest.get_objects_inside_radius(pos, pla)
+
+			for _,oir in pairs(objs) do
+
+				if oir:is_player() then
+
+					in_range = 1
+
+					break
+				end
+			end
+
+			-- player not found
+			if in_range == 0 then
+				return
+			end
+		end
+
+		-- find air blocks within 5 nodes of spawner
+		local air = minetest.find_nodes_in_area(
+			{x = pos.x - 5, y = pos.y + yof, z = pos.z - 5},
+			{x = pos.x + 5, y = pos.y + yof, z = pos.z + 5},
+			{"air"})
+
+		-- spawn in random air block
+		if air and #air > 0 then
+
+			local pos2 = air[math.random(#air)]
+			local lig = minetest.get_node_light(pos2) or 0
+
+			pos2.y = pos2.y + 0.5
+
+			-- only if light levels are within range
+			if lig >= mlig and lig <= xlig then
+				minetest.add_entity(pos2, mob)
+			end
+		end
+
+	end
+})