ID challenge chance increases more meaningfully (always < 50%) chance.

More NPC's in building map generator (not so many empty rooms).

game/modules/tome/class/GameState.lua

@@ -2500,8 +2500,8 @@ end
 
 function _M:infiniteDungeonChallenge(zone, lev, data, id_layout_name, id_grids_name)
 	self.id_challenge = self.id_challenge or {count=0, level_entering_id=game:getPlayer(true).level, quests={}, rewarded={}}
-	-- challenges become less rare with depth
-	if lev < 3 or not rng.percent(20 + math.ceil(math.log(lev*lev) * 4.5)) then return end
+	-- challenges become less rare with depth (21%@5, 24%@25, 27%@50, 30%@75, 43%@500)
+	if lev < 3 or not rng.percent(20 + 30*lev/(lev + 150)) then return end
 	self.id_challenge.count = self.id_challenge.count + 1
 
 	local challenges = {

game/modules/tome/data/zones/infinite-dungeon/zone.lua

@@ -159,7 +159,7 @@ return {
 				lite_room_chance = rng.range(0, 100),
 				max_block_w = rng.range(7, 20), max_block_h = rng.range(7, 20),
 				max_building_w = rng.range(4, size/6), max_building_h = rng.range(4, size/6),
-				enemy_count = math.ceil(vx * vy *45/4900) -- more room for enemies and more cover on this map: avg: 31 @ 60x60, 45 @ 70x70, 75 @ 90x90
+				enemy_count = math.ceil(vx * vy *60/4900) -- more room for enemies and more cover on this map: avg: 44 @ 60x60, 60 @ 70x70, 99 @ 90x90
 			},
 			{	id_layout_name = "octopus",
 				desc = ", subsided area",