diff --git a/lib/objects/game_object.rb b/lib/objects/game_object.rb
index b8c6c54..308d164 100644
--- a/lib/objects/game_object.rb
+++ b/lib/objects/game_object.rb
@@ -8,8 +8,8 @@ class IMICFPS
     attr_accessor :x, :y, :z, :scale
     attr_accessor :visible, :renderable, :backface_culling
     attr_accessor :x_rotation, :y_rotation, :z_rotation
-    attr_reader :model, :name, :debug_color
-    def initialize(x: 0, y: 0, z: 0, bound_model: nil, scale: MODEL_METER_SCALE, backface_culling: true, auto_manage: true)
+    attr_reader :model, :name, :debug_color, :terrain, :width, :height, :depth
+    def initialize(x: 0, y: 0, z: 0, bound_model: nil, scale: MODEL_METER_SCALE, backface_culling: true, auto_manage: true, terrain: nil)
       @x,@y,@z,@scale = x,y,z,scale
       @bound_model = bound_model
       @backface_culling = backface_culling
@@ -17,16 +17,29 @@ class IMICFPS
       @renderable = true
       @x_rotation,@y_rotation,@z_rotation = 0,0,0
       @debug_color = Color.new(0.0, 1.0, 0.0)
+      @terrain = terrain
+      @width, @height, @depth = 0,0,0
 
       ObjectManager.add_object(self) if auto_manage
       setup
 
+      if @bound_model
+        box = normalize_bounding_box(@bound_model.model.bounding_box)
+        @width  = box.max_x-box.min_x
+        @height = box.max_y-box.min_y
+        @depth  = box.max_z-box.min_z
+      end
+
       return self
     end
 
     def bind_model(model)
       raise "model isn't a model!" unless model.is_a?(ModelLoader)
       @bound_model = model
+      box = normalize_bounding_box(@bound_model.model.bounding_box)
+      @width  = box.max_x-box.min_x
+      @height = box.max_y-box.min_y
+      @depth  = box.max_z-box.min_z
     end
 
     def model
diff --git a/lib/objects/player.rb b/lib/objects/player.rb
index b39b818..1a729a9 100644
--- a/lib/objects/player.rb
+++ b/lib/objects/player.rb
@@ -5,10 +5,7 @@ class IMICFPS
 
     attr_accessor :speed
     attr_reader :name, :bound_model, :first_person_view
-    def initialize(x: 0, y: 0, z: 0, bound_model: nil, scale: MODEL_METER_SCALE, backface_culling: true, auto_manage: true, terrain: nil)
-      @terrain = terrain
-      super(x: x, y: y, z: z, bound_model: model, scale: scale, backface_culling: backface_culling, auto_manage: auto_manage)
-    end
+
     def setup
       bind_model(ModelLoader.new(type: :obj, file_path: "objects/biped.obj", game_object: self))
       @speed = 2.5 # meter's per second
diff --git a/lib/objects/terrain.rb b/lib/objects/terrain.rb
index f85495a..71bc535 100644
--- a/lib/objects/terrain.rb
+++ b/lib/objects/terrain.rb
@@ -29,7 +29,7 @@ class IMICFPS
     end
 
     def find_nearest_vertex(vertex)
-      _canidate_for_floor = nil
+      nearest = nil
       smaller_list = []
       smaller_list << @nearest_vertex_lookup.dig(vertex.x.round-1, vertex.y.round-1)
       smaller_list << @nearest_vertex_lookup.dig(vertex.x.round, vertex.y.round)
@@ -38,16 +38,16 @@ class IMICFPS
 
       smaller_list.each do |vert|
         next if vert.nil?
-        if _canidate_for_floor
-          if Gosu.distance(vertex.x, vertex.z, vert.x, vert.z) < Gosu.distance(_canidate_for_floor.x, _canidate_for_floor.z, vert.x, vert.z)
-            _canidate_for_floor = vert
+        if nearest
+          if Gosu.distance(vertex.x, vertex.z, vert.x, vert.z) < Gosu.distance(nearest.x, nearest.z, vert.x, vert.z)
+            nearest = vert
           end
         end
 
-        _canidate_for_floor = vert unless _canidate_for_floor
+        nearest = vert unless nearest
       end
 
-      return _canidate_for_floor
+      return nearest
     end
   end
 end
diff --git a/lib/objects/tree.rb b/lib/objects/tree.rb
index a3aba91..21be33f 100644
--- a/lib/objects/tree.rb
+++ b/lib/objects/tree.rb
@@ -2,6 +2,7 @@ class IMICFPS
   class Tree < GameObject
     def setup
       bind_model(ModelLoader.new(type: :obj, file_path: "objects/tree.obj", game_object: self))
+      self.y = @terrain.height_at(self)
     end
 
     # def update
diff --git a/lib/window.rb b/lib/window.rb
index ad0ffb6..2773548 100644
--- a/lib/window.rb
+++ b/lib/window.rb
@@ -17,20 +17,25 @@ class IMICFPS
       end
       $window = self
       @needs_cursor = false
+      @number_of_faces = 0
 
       @delta_time = Gosu.milliseconds
-      @number_of_faces = 0
+
+      @terrain = Terrain.new#(size: 170, height: 0)
       @draw_skydome = true
       @skydome = Skydome.new(scale: 0.08, backface_culling: false, auto_manage: false)
-      Tree.new(x: 1, y: 0, z: -5)
-      Tree.new(x: 5, y: 0, z: 5)
-      Tree.new(x: -5, y: 0, z: 1)
+
+      25.times do
+        p @terrain.width
+        Tree.new(x: rand(@terrain.width)-(@terrain.width/2.0), z: rand(@terrain.depth)-(@terrain.depth/2.0), terrain: @terrain)
+      end
+      # Tree.new(x: 1, z: -5, terrain: @terrain)
+      # Tree.new(x: 5, z: 5,  terrain: @terrain)
       # TestObject.new(scale: 1)
       p ObjectManager.objects.map {|o| o.name}
       # Model.new(type: :obj, file_path: "objects/tree.obj", z: -5)
       # Model.new(type: :obj, file_path: "objects/tree.obj", x: -2, z: -6)
       # Model.new(type: :obj, file_path: "objects/sponza.obj", scale: 1, y: -0.2)
-      @terrain = Terrain.new#(size: 170, height: 0)
 
       @player = Player.new(x: 1, y: 0, z: -1, terrain: @terrain)
       @camera = Camera.new(x: 0, y: -2, z: 1)