diff --git a/game/modules/example/class/Player.lua b/game/modules/example/class/Player.lua
index 4182b135a95fa1e0c4b7ae48fcfb4cbcb08ca7fe..7ec5bee734ef86f2095b7a5a1ba68f6acc649db4 100644
--- a/game/modules/example/class/Player.lua
+++ b/game/modules/example/class/Player.lua
@@ -80,12 +80,18 @@ function _M:act()
 	end
 end
 
+-- Precompute FOV form, for speed
+local fovdist = {}
+for i = 0, 30 * 30 do
+	fovdist[i] = math.max((20 - math.sqrt(i)) / 14, 0.6)
+end
+
 function _M:playerFOV()
 	-- Clean FOV before computing it
 	game.level.map:cleanFOV()
 	-- Compute both the normal and the lite FOV, using cache
 	self:computeFOV(self.sight or 20, "block_sight", function(x, y, dx, dy, sqdist)
-		game.level.map:apply(x, y, math.max((20 - math.sqrt(sqdist)) / 14, 0.6))
+		game.level.map:apply(x, y, fovdist[sqdist])
 	end, true, false, true)
 	self:computeFOV(self.lite, "block_sight", function(x, y, dx, dy, sqdist) game.level.map:applyLite(x, y) end, true, true, true)
 end
diff --git a/game/modules/tome/class/Player.lua b/game/modules/tome/class/Player.lua
index 90daf0455dbb1c4a158a08defd30b840c0c8b0c3..612b2cfbeae09e60f3d45f6fd7bcc7b05606e979 100644
--- a/game/modules/tome/class/Player.lua
+++ b/game/modules/tome/class/Player.lua
@@ -182,7 +182,7 @@ function _M:act()
 	end
 end
 
--- Precompute FOV form
+-- Precompute FOV form, for speed
 local fovdist = {}
 for i = 0, 30 * 30 do
 	fovdist[i] = math.max((20 - math.sqrt(i)) / 14, 0.6)