Add settings & set max/min height for spawning:

- sneeker.spawn_minlight
  - Sets the minimum light required for spawn to occur.
- sneeker.spawn_minheight
  - Sets the lowest position at which sneeker can spawn.
- sneeker.spawn_maxheight
  - Sets the highest position at which sneeker can spawn.

settingtypes.txt

@@ -1,11 +1,20 @@
 # Sets maximum number of spawns that can exist in world.
-sneeker.spawn_cap (Maximum spawns) int 10
+sneeker.spawn_cap (Sneeker maximum spawns) int 10
 
 # Sets possibility for spawn.
-sneeker.spawn_chance (Spawn chance) int 1000
+sneeker.spawn_chance (Sneeker spawn chance) int 1000
 
 # Sets frequency of spawn chance. Default 240 is equivalent to 4 minutes (60 * 4).
-sneeker.spawn_interval (Spawn interval) int 240
+sneeker.spawn_interval (Sneeker spawn interval) int 240
+
+# Sets the minimum light required for spawn to occur.
+sneeker.spawn_minlight (Sneeker min light for spawn) int -1
 
 # Sets the maximum light that a node can have for spawn to occur.
-sneeker.spawn_maxlight (Max light for spawn) int 5
+sneeker.spawn_maxlight (Sneeker max light for spawn) int 5
+
+# Sets the lowest position at which sneeker can spawn.
+sneeker.spawn_minheight (Sneeker min spawn height) int -31000
+
+# Sets the highest position at which sneeker can spawn.
+sneeker.spawn_maxheight (Sneeker max spawn height) int 31000

spawn.lua

@@ -8,7 +8,10 @@ local time_day = time_hr * 24
 local spawn_cap = tonumber(core.settings:get("sneeker.spawn_cap")) or 10 -- Maximum number of spawns active at one time
 local spawn_chance = tonumber(core.settings:get("sneeker.spawn_chance")) or 1000 -- 1/1000 chance of spawn
 local spawn_interval = tonumber(core.settings:get("sneeker.spawn_interval")) or time_min * 4 -- Default interval is 4 minutes
-local spawn_maxlight = tonumber(core.settings:get("sneeker.spawn_maxlight")) or 5 -- Maximum light of node for spawn
+local spawn_minlight = tonumber(core.settings:get("sneeker.spawn_minlight")) or -1 -- Minimum light of node required for spawn
+local spawn_maxlight = tonumber(core.settings:get("sneeker.spawn_maxlight")) or 5 -- Maximum light of node allowed for spawn
+local spawn_minheight = tonumber(core.settings:get("sneeker.spawn_minheight")) or -31000 -- Minimum height allowed for spawn
+local spawn_maxheight = tonumber(core.settings:get("sneeker.spawn_maxheight")) or 31000 -- Maximum height allowed for spawn
 
 -- Display spawn chance as percentage in log
 local spawn_chance_percent = math.floor(1 / spawn_chance * 100)
@@ -40,13 +43,21 @@ core.register_abm({
 		-- Debugging spawning
 		sneeker.log_debug("Node light level at " .. sneeker.get_pos_string(pos) .. ": " .. tostring(node_light))
 
-		if not node_light or node_light > spawn_maxlight or node_light < -1 then
+		-- Node light level
+		if not node_light or node_light > spawn_maxlight then
 			sneeker.log_debug("Node not dark enough for spawn")
 			return
+		elseif node_light < spawn_minlight then
+			sneeker.log_debug("Node too dark for spawn")
+			return
 		end
 
 		-- Spawn range
-		if pos.y > 31000 then
+		if spawn_minheight ~= nil and pos.y < spawn_minheight then
+			sneeker.log_debug("Position is too low for spawn")
+			return
+		elseif pos.y > spawn_maxheight then
+			sneeker.log_debug("Position is too high for spawn")
 			return
 		end