Trees should have a bit less veritcal randomness

git-svn-id: http://svn.net-core.org/repos/t-engine4@4879 51575b47-30f0-44d4-a5cc-537603b46e54

game/modules/tome/class/Grid.lua

@@ -160,7 +160,7 @@ function _M:makeTrees(base, max, bigheight_limit, tint)
 			display_scale = 1,
 			display_scale = rng.float(0.5 + inb / 6, 1),
 			display_x = rng.float(-1 / 3 * nb / 3, 1 / 3 * nb / 3),
-			display_y = rng.float(-1 / 3 * nb / 3, 1 / 3 * nb / 3) - (treeid < (bigheight_limit or 9) and 0 or 1),
+			display_y = rng.float(-1 / 5 * nb / 3, 1 / 4 * nb / 3) - (treeid < (bigheight_limit or 9) and 0 or 1),
 			display_on_seen = true,
 			display_on_remember = true,
 			display_h = treeid < (bigheight_limit or 9) and 1 or 2,