diff --git a/README.md b/README.md
index bbbb323..c198c43 100644
--- a/README.md
+++ b/README.md
@@ -2,3 +2,22 @@ amg
 ===
 
 Another Map Generator mod for Minetest
+
+
+##Feature
+- 12 biome
+- Biomes, Trees, Nodes, etc. are modifyable
+
+##List of Biomes
+- Ice Plains
+- Ice Plains Spikes
+- Cold Taiga
+- Stone Plain
+- Extreme Hills
+- Taiga
+- Plains
+- Flower Plains
+- River
+- Forest
+- Savanna
+- Desert
diff --git a/biome.lua b/biome.lua
index f8524f3..7a49370 100644
--- a/biome.lua
+++ b/biome.lua
@@ -209,7 +209,11 @@ badd({
 			if y < wl then
 				return c_dirt
 			else
-				return c_dirt_grass
+				if temp > 1 and (base == wl or base == wl+1) then
+					return c_sand
+				else
+					return c_dirt_grass
+				end
 			end
 		end
 	end
@@ -312,7 +316,11 @@ badd({
 			if y < wl then
 				return c_dirt
 			else
-				return c_dirt_savanna
+				if temp > 1.7 and base == wl then
+					return c_sand
+				else
+					return c_dirt_savanna
+				end
 			end
 		end
 	end
diff --git a/hud.lua b/hud.lua
index 95d83b4..9331b1c 100644
--- a/hud.lua
+++ b/hud.lua
@@ -1,13 +1,24 @@
 amg.hud = {}
 
+local bedrock_timer = 0
 minetest.register_globalstep(function(dtime)
+	if dtime < 0.1 then return end
 	for _,player in ipairs(minetest.get_connected_players()) do
-		--local pos = vector.round(player:getpos())
 		local pos = player:getpos()
 		local name = player:get_player_name()
-
-		local temp = minetest.get_perlin(5678, 7, 0.5, 512):get2d({x=pos.x,y=pos.z})
-		local humi = minetest.get_perlin(8765, 7, 0.5, 512):get2d({x=pos.x,y=pos.z})
+		
+		local base = minetest.get_perlin(1234, 6, 0.5, 256):get2d({x=pos.x,y=pos.z})
+		local moun = minetest.get_perlin(4321, 6, 0.5, 256):get2d({x=pos.x,y=pos.z})
+		local base = math.ceil((base * -30) + wl + 10 + (moun * 15))
+		local temp = 0
+		local humi = 0
+		if base > 95 then
+			temp = 0.05
+			humi = 0.9
+		else
+			temp = minetest.get_perlin(5678, 7, 0.5, 512):get2d({x=pos.x,y=pos.z})
+			humi = minetest.get_perlin(8765, 7, 0.5, 512):get2d({x=pos.x,y=pos.z})
+		end
 		
 		local biometext = biome.get_by_temp_humi(math.abs(temp*2),math.abs(humi*100))[2]
 		
diff --git a/init.lua b/init.lua
index a1374a2..b1d91ab 100644
--- a/init.lua
+++ b/init.lua
@@ -47,7 +47,6 @@ local function amg_generate(minp, maxp, seed, vm, emin, emax)
 	local cave = minetest.get_perlin(3456, 6, 0.5, 360) -- cave
 	--local laca = minetest.get_perlin(1278, 6, 0.5, 360) -- lava cave
 	local nizx = 0
-	local nizx = 0
 	for z = minp.z, maxp.z do
 	for x = minp.x, maxp.x do
 		nizx = nizx + 1
@@ -85,6 +84,24 @@ local function amg_generate(minp, maxp, seed, vm, emin, emax)
 			end
 		end
 		
+	end
+	end
+	
+	--tree planting
+	local nizx = 0
+	for z = minp.z, maxp.z do
+	for x = minp.x, maxp.x do
+		nizx = nizx + 1
+		local base_ = math.ceil((base[nizx] * -30) + wl + 10 + (moun[nizx] * 15))
+		local temp_ = 0
+		local humi_ = 0
+		if base_ > 95 then
+			temp_ = 0.10
+			humi_ = 90
+		else
+			temp_ = math.abs(temp[nizx] * 2)
+			humi_ = math.abs(humi[nizx] * 100)
+		end
 		local biome__ = biome.list[biome.get_by_temp_humi(temp_,humi_)[1]]
 		local tr = biome__.trees
 		local filled = false
@@ -119,13 +136,6 @@ local function amg_generate(minp, maxp, seed, vm, emin, emax)
 	end
 	end
 	
-	--[[
-	for i = 1, #biome.spawntree do
-		local st = biome.spawntree
-		tree.spawn(st[i][1],st[i][2],data,area,seed)
-	end
-	--]]	
-	
 	vm:set_data(data)
 	vm:set_lighting({day=0, night=0})
 	vm:update_liquids()
diff --git a/trees.lua b/trees.lua
index 75d96f5..8c7e1cb 100644
--- a/trees.lua
+++ b/trees.lua
@@ -44,21 +44,16 @@ tree.register({
 	maxh = 85,
 	grows_on = "default:dirt_with_grass",
 	grow = function(pos, data, area, seed, minp, maxp, pr)
-		local x, y_, z = pos.x, pos.y, pos.z
+		local x, y, z = pos.x, pos.y, pos.z
 		local th = pr:next(4,5)
-		local y = y_ + th - 1
 		
-		for xx = math.max(x-2,minp.x), math.min(x+2,maxp.x) do
-		for yy = math.max(y-2,minp.y), math.min(y+2,maxp.y) do
-		for zz = math.max(z-2,minp.z), math.min(z+2,maxp.z) do
-			if pr:next(1,100) <= 20 then
-				local vi = area:index(xx, yy, zz)
-				add_leaves(data, vi, c_leaves, c_leaves)
-			end
-		end
-		end
+		for yy = math.max(y,minp.y), math.min(y+th,maxp.y) do
+			local vi = area:index(x, yy, z)
+			data[vi] = c_tree
 		end
 		
+		local y = y + th - 1
+		
 		for xx = math.max(x-1,minp.x), math.min(x+1,maxp.x) do
 		for yy = math.max(y-1,minp.y), math.min(y+1,maxp.y) do
 		for zz = math.max(z-1,minp.z), math.min(z+1,maxp.z) do
@@ -68,9 +63,12 @@ tree.register({
 		end
 		end
 		
-		for yy = math.max(y_,minp.y), math.min(y_+th,maxp.y) do
-			local vi = area:index(x, yy, z)
-			data[vi] = c_tree
+		for ii = 1, 8 do
+			local xx = x + pr:next(-2,2)
+			local yy = y + pr:next(-2,2)
+			local zz = z + pr:next(-2,2)
+			local vi = area:index(xx, yy, zz)
+			add_leaves(data, vi, c_leaves, c_leaves)
 		end
 		
 		--print("normal tree spawned at:"..x..","..y..","..z)
@@ -97,23 +95,19 @@ tree.register({
 		for xx = math.max(x-1,minp.x), math.min(x+1,maxp.x) do
 		for yy = math.max(y-1,minp.y), math.min(y+1,maxp.y) do
 		for zz = math.max(z-1,minp.z), math.min(z+1,maxp.z) do
-			if (yy ~= y and xx ~= x and zz ~= z) or yy ~= y-1 then
-				local vi = area:index(xx, yy, zz)
-				add_leaves(data, vi, c_leaves)
-			end
+			local vi = area:index(xx, yy, zz)
+			add_leaves(data, vi, c_leaves)
 		end
 		end
 		end
 		
-		for xx = math.max(x-2,minp.x), math.min(x+2,maxp.x) do
-		for yy = math.max(y-2,minp.y), math.min(y+2,maxp.y) do
-		for zz = math.max(z-2,minp.z), math.min(z+2,maxp.z) do
-			if ((yy ~= y and xx ~= x and zz ~= z) or yy ~= y-1) and pr:next(1,100) <= 20 then
-				local vi = area:index(xx, yy, zz)
-				add_leaves(data, vi, c_leaves, c_leaves)
-			end
-		end
-		end
+		for ii = 1, 12 do
+			local xx = x + pr:next(-2,2)
+			local yy = y + pr:next(-2,2)
+			local zz = z + pr:next(-2,2)
+			
+			local vi = area:index(xx, yy, zz)
+			add_leaves(data, vi, c_leaves, c_leaves)
 		end
 		
 		--print("savanna tree spawned at:"..x..","..y..","..z)
@@ -131,36 +125,32 @@ tree.register({
 		local x, y, z = pos.x, pos.y, pos.z
 		local th = pr:next(5,8)
 		
-		for xx = math.max(x-2,minp.x), math.min(x+2,maxp.x) do
-		for zz = math.max(z-2,minp.z), math.min(z+2,maxp.z) do
-			if xx ~= x and zz ~= z then
-				local vi = area:index(xx, y+3, zz)
-				add_leaves(data, vi, c_leaves)
-				local vi = area:index(xx, y+4, zz)
-				data[vi] = c_snow
-			end
-		end
+		for yy = math.max(y,minp.y), math.min(y+th,maxp.y) do
+			local vi = area:index(x, yy, z)
+			data[vi] = c_tree
 		end
 		
-		for xx = math.max(x-1,minp.x), math.min(x+1,maxp.x) do
-		for zz = math.max(z-1,minp.z), math.min(z+1,maxp.z) do
-			if xx ~= x and zz ~= z then
-				local vi = area:index(xx, y+th, zz)
-				add_leaves(data, vi, c_leaves)
-				local vi = area:index(xx, y+th+1, zz)
-				data[vi] = c_snow
-			end
+		for xx = math.max(x-2,minp.x), math.min(x+2,maxp.x) do
+		for zz = math.max(z-2,minp.z), math.min(z+2,maxp.z) do
+			local vi = area:index(xx, y+3, zz)
+			add_leaves(data, vi, c_leaves)
+			local vi = area:index(xx, y+4, zz)
+			add_leaves(data, vi, c_snow)
 		end
 		end
 		
 		local vi = area:index(x, y+th+1, z)
 		add_leaves(data, vi, c_leaves)
 		local vi = area:index(x, y+th+2, z)
-		data[vi] = c_snow
+		add_leaves(data, vi, c_snow)
 		
-		for yy = math.max(y,minp.y), math.min(y+th,maxp.y) do
-			local vi = area:index(x, yy, z)
-			data[vi] = c_tree
+		for xx = math.max(x-1,minp.x), math.min(x+1,maxp.x) do
+		for zz = math.max(z-1,minp.z), math.min(z+1,maxp.z) do
+			local vi = area:index(xx, y+th, zz)
+			add_leaves(data, vi, c_leaves)
+			local vi = area:index(xx, y+th+1, zz)
+			add_leaves(data, vi, c_snow)
+		end
 		end
 		
 		--print("pine tree spawned at:"..x..","..y..","..z)
@@ -178,6 +168,11 @@ tree.register({
 		local x, y, z = pos.x, pos.y, pos.z
 		local th = pr:next(5,8)
 		
+		for yy = math.max(y,minp.y), math.min(y+th,maxp.y) do
+			local vi = area:index(x, yy, z)
+			data[vi] = c_tree
+		end
+		
 		for xx = math.max(x-2,minp.x), math.min(x+2,maxp.x) do
 		for zz = math.max(z-2,minp.z), math.min(z+2,maxp.z) do
 			local vi = area:index(xx, y+3, zz)
@@ -195,11 +190,6 @@ tree.register({
 		local vi = area:index(x, y+th+1, z)
 		add_leaves(data, vi, c_leaves)
 		
-		for yy = math.max(y,minp.y), math.min(y+th,maxp.y) do
-			local vi = area:index(x, yy, z)
-			data[vi] = c_tree
-		end
-		
 		--print("pine tree spawned at:"..x..","..y..","..z)
 	end
 })
@@ -348,8 +338,10 @@ tree.register({
 			for u = -1, 1 do
 			for i = -1, 1 do
 			for o = 0, h do
-				local vi = area:index(x+u, y+o, z+i)
-				data[vi] = c_ice
+				if data[area:index(x+u, y-1, z+i)] == c_dirt_with_snow then
+					local vi = area:index(x+u, y+o, z+i)
+					data[vi] = c_ice
+				end
 			end
 			end
 			end
@@ -357,8 +349,10 @@ tree.register({
 			for u = 0, 1 do
 			for i = -1, 0 do
 			for o = h, j do
-				local vi = area:index(x+u, y+o, z+i)
-				data[vi] = c_ice
+				if data[area:index(x+u, y-1, z+i)] == c_dirt_with_snow then
+					local vi = area:index(x+u, y+o, z+i)
+					data[vi] = c_ice
+				end
 			end
 			end
 			end