Bounding boxes are now drawn using Vertex arrays

Gemfile.lock

@@ -1,8 +1,8 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    glu (8.3.0)
-    glu (8.3.0-x86-mingw32)
+    glu (8.2.2)
+    glu (8.2.2-x86-mingw32)
     gosu (0.13.3)
     gosu (0.13.3-x86-mingw32)
     opengl-bindings (1.6.6)

lib/objects/camera.rb

@@ -74,9 +74,16 @@ class IMICFPS
       glRotatef(@render_pitch,1,0,0)
       glRotatef(@yaw,0,1,0)
       glTranslatef(-@x, -@y, -@z)
-
       glMatrixMode(GL_MODELVIEW) # The modelview matrix is where object information is stored.
       glLoadIdentity
+
+      if $debug && @game_object
+        glBegin(GL_LINES)
+          glColor3f(1,0,0)
+          glVertex3f(@x, @y, @z)
+          glVertex3f(@game_object.x, @game_object.y, @game_object.z)
+        glEnd
+      end
     end
 
     def update

lib/objects/game_object.rb

@@ -4,6 +4,7 @@ class IMICFPS
   # A game object is any renderable thing
   class GameObject
     include OpenGL
+    include GLU
     include CommonMethods
     attr_accessor :x, :y, :z, :scale
     attr_accessor :visible, :renderable, :backface_culling
@@ -110,73 +111,159 @@ class IMICFPS
     end
 
     def render_bounding_box(box, color = @debug_color)
-     # TODO: Minimize number of calls in here
       box = normalize_bounding_box(box)
 
+      glEnableClientState(GL_VERTEX_ARRAY)
+      glEnableClientState(GL_COLOR_ARRAY)
+      glEnableClientState(GL_NORMAL_ARRAY)
+
+      _normals = [
+        0,1,0,
+        0,1,0,
+        0,1,0,
+        0,1,0,
+        0,1,0,
+        0,1,0,
+
+        0,-1,0,
+        0,-1,0,
+        0,-1,0,
+        0,-1,0,
+        0,-1,0,
+        0,-1,0,
+
+        0,0,1,
+        0,0,1,
+        0,0,1,
+        0,0,1,
+        0,0,1,
+        0,0,1,
+
+        1,0,0,
+        1,0,0,
+        1,0,0,
+        1,0,0,
+        1,0,0,
+        1,0,0,
+
+        -1,0,0,
+        -1,0,0,
+        -1,0,0,
+        -1,0,0,
+        -1,0,0,
+        -1,0,0,
+
+        -1,0,0,
+        -1,0,0,
+        -1,0,0,
+
+        -1,0,0,
+        -1,0,0,
+        -1,0,0
+      ].pack("f*")
+      _colors  = [
+        color.red, color.green, color.blue,
+        color.red, color.green, color.blue,
+        color.red, color.green, color.blue,
+        color.red, color.green, color.blue,
+        color.red, color.green, color.blue,
+        color.red, color.green, color.blue,
+        color.red, color.green, color.blue,
+        color.red, color.green, color.blue,
+        color.red, color.green, color.blue,
+        color.red, color.green, color.blue,
+        color.red, color.green, color.blue,
+        color.red, color.green, color.blue,
+        color.red, color.green, color.blue,
+        color.red, color.green, color.blue,
+        color.red, color.green, color.blue,
+        color.red, color.green, color.blue,
+        color.red, color.green, color.blue,
+        color.red, color.green, color.blue,
+        color.red, color.green, color.blue,
+        color.red, color.green, color.blue,
+        color.red, color.green, color.blue,
+        color.red, color.green, color.blue,
+        color.red, color.green, color.blue,
+        color.red, color.green, color.blue,
+        color.red, color.green, color.blue,
+        color.red, color.green, color.blue,
+        color.red, color.green, color.blue,
+        color.red, color.green, color.blue,
+        color.red, color.green, color.blue,
+        color.red, color.green, color.blue,
+        color.red, color.green, color.blue,
+        color.red, color.green, color.blue,
+        color.red, color.green, color.blue,
+        color.red, color.green, color.blue,
+        color.red, color.green, color.blue,
+        color.red, color.green, color.blue
+      ].pack("f*")
+      _vertices = [
+        box.min_x, box.max_y, box.max_z,
+        box.min_x, box.max_y, box.min_z,
+        box.max_x, box.max_y, box.min_z,
+
+        box.min_x, box.max_y, box.max_z,
+        box.max_x, box.max_y, box.max_z,
+        box.max_x, box.max_y, box.min_z,
+
+        box.max_x, box.min_y, box.min_z,
+        box.max_x, box.min_y, box.max_z,
+        box.min_x, box.min_y, box.max_z,
+
+        box.max_x, box.min_y, box.min_z,
+        box.min_x, box.min_y, box.min_z,
+        box.min_x, box.min_y, box.max_z,
+
+        box.min_x, box.max_y, box.max_z,
+        box.min_x, box.max_y, box.min_z,
+        box.min_x, box.min_y, box.min_z,
+
+        box.min_x, box.min_y, box.max_z,
+        box.min_x, box.min_y, box.min_z,
+        box.min_x, box.max_y, box.max_z,
+
+        box.max_x, box.max_y, box.max_z,
+        box.max_x, box.max_y, box.min_z,
+        box.max_x, box.min_y, box.min_z,
+
+        box.max_x, box.min_y, box.max_z,
+        box.max_x, box.min_y, box.min_z,
+        box.max_x, box.max_y, box.max_z,
+
+        box.min_x, box.max_y, box.max_z,
+        box.max_x, box.max_y, box.max_z,
+        box.max_x, box.min_y, box.max_z,
+
+        box.min_x, box.max_y, box.max_z,
+        box.max_x, box.min_y, box.max_z,
+        box.min_x, box.min_y, box.max_z,
+
+        box.max_x, box.min_y, box.min_z,
+        box.min_x, box.min_y, box.min_z,
+        box.min_x, box.max_y, box.min_z,
+
+        box.max_x, box.min_y, box.min_z,
+        box.min_x, box.max_y, box.min_z,
+        box.max_x, box.max_y, box.min_z
+      ]
+      _vertices_size = _vertices.size
+      _vertices = _vertices.pack("f*")
+
+      glVertexPointer(3, GL_FLOAT, 0, _vertices)
+      glColorPointer(3, GL_FLOAT, 0, _colors)
+      glNormalPointer(GL_FLOAT, 0, _normals)
+
       glPolygonMode(GL_FRONT_AND_BACK, GL_LINE)
-      glBegin(GL_TRIANGLES)
-        # TOP
-        glNormal3f(0,1,0)
-        glColor3f(color.red, color.green, color.blue)
-        glVertex3f(box.min_x, box.max_y, box.max_z)
-        glVertex3f(box.min_x, box.max_y, box.min_z)
-        glVertex3f(box.max_x, box.max_y, box.min_z)
-
-        glVertex3f(box.min_x, box.max_y, box.max_z)
-        glVertex3f(box.max_x, box.max_y, box.max_z)
-        glVertex3f(box.max_x, box.max_y, box.min_z)
-
-        # BOTTOM
-        glNormal3f(0,-1,0)
-        glVertex3f(box.max_x, box.min_y, box.min_z)
-        glVertex3f(box.max_x, box.min_y, box.max_z)
-        glVertex3f(box.min_x, box.min_y, box.max_z)
-
-        glVertex3f(box.max_x, box.min_y, box.min_z)
-        glVertex3f(box.min_x, box.min_y, box.min_z)
-        glVertex3f(box.min_x, box.min_y, box.max_z)
-
-        # RIGHT SIDE
-        glNormal3f(0,0,1)
-        glVertex3f(box.min_x, box.max_y, box.max_z)
-        glVertex3f(box.min_x, box.max_y, box.min_z)
-        glVertex3f(box.min_x, box.min_y, box.min_z)
-
-        glVertex3f(box.min_x, box.min_y, box.max_z)
-        glVertex3f(box.min_x, box.min_y, box.min_z)
-        glVertex3f(box.min_x, box.max_y, box.max_z)
-
-        # LEFT SIDE
-        glNormal3f(1,0,0)
-        glVertex3f(box.max_x, box.max_y, box.max_z)
-        glVertex3f(box.max_x, box.max_y, box.min_z)
-        glVertex3f(box.max_x, box.min_y, box.min_z)
-
-        glVertex3f(box.max_x, box.min_y, box.max_z)
-        glVertex3f(box.max_x, box.min_y, box.min_z)
-        glVertex3f(box.max_x, box.max_y, box.max_z)
-
-        # FRONT
-        glNormal3f(-1,0,0)
-        glVertex3f(box.min_x, box.max_y, box.max_z)
-        glVertex3f(box.max_x, box.max_y, box.max_z)
-        glVertex3f(box.max_x, box.min_y, box.max_z)
-
-        glVertex3f(box.min_x, box.max_y, box.max_z)
-        glVertex3f(box.max_x, box.min_y, box.max_z)
-        glVertex3f(box.min_x, box.min_y, box.max_z)
-
-        # BACK
-        glNormal3f(-1,0,0)
-        glVertex3f(box.max_x, box.min_y, box.min_z)
-        glVertex3f(box.min_x, box.min_y, box.min_z)
-        glVertex3f(box.min_x, box.max_y, box.min_z)
-
-        glVertex3f(box.max_x, box.min_y, box.min_z)
-        glVertex3f(box.min_x, box.max_y, box.min_z)
-        glVertex3f(box.max_x, box.max_y, box.min_z)
-      glEnd
+      glDisable(GL_LIGHTING)
+      glDrawArrays(GL_TRIANGLES, 0, _vertices_size/3)
+      glEnable(GL_LIGHTING)
       glPolygonMode(GL_FRONT_AND_BACK, GL_FILL)
+
+      glDisableClientState(GL_VERTEX_ARRAY)
+      glDisableClientState(GL_COLOR_ARRAY)
+      glDisableClientState(GL_NORMAL_ARRAY)
     end
 
     def handleGlError

lib/objects/multi_line_text.rb

@@ -45,7 +45,6 @@ class MultiLineText
 
   def y=(int)
     @y = int
-    puts "Hi, #{int}"
     @texts.each_with_index {|t, i| t.y=int+(i*t.size)}
   end
 

lib/objects/player.rb

@@ -48,7 +48,7 @@ class IMICFPS
       glEnable(GL_BLEND)
       glBindTexture(GL_TEXTURE_2D, @name_texture_id)
       glBegin(GL_TRIANGLES)
-        # glColor3f(0.0,0.0,0.0)
+        glColor3f(1.0,1.0,1.0)
         # TOP LEFT
         glTexCoord2f(0, 0)
         glVertex3f(_x-_width,_y+_height,@z)
@@ -81,15 +81,15 @@ class IMICFPS
 
     def draw
       if !@first_person_view
-        draw_nameplate
         super
+        draw_nameplate
       end
     end
 
     def update
       super
 
-      @floor = @terrain.height_at(self)
+      @floor = @terrain.height_at(self, 4.5)
 
       relative_speed = @speed
       if button_down?(Gosu::KbLeftControl)
@@ -141,7 +141,7 @@ class IMICFPS
       end
       if @jumping && !@falling
         if button_down?(Gosu::KbSpace)
-          @y_velocity+=(2*5)*delta_time
+          @y_velocity+=(2*15)*delta_time
           @falling = true if @y_velocity >= 2
         end
       end

lib/objects/terrain.rb

@@ -22,15 +22,15 @@ class IMICFPS
       p model.faces.first
     end
 
-    def height_at(vertex)
-      if vert = find_nearest_vertex(vertex)
+    def height_at(vertex, max_distance = Float::INFINITY)
+      if vert = find_nearest_vertex(vertex, max_distance)
         return vert.y
       else
         -1
       end
     end
 
-    def find_nearest_vertex(vertex)
+    def find_nearest_vertex(vertex, max_distance)
       nearest = nil
       smaller_list = []
       smaller_list << @nearest_vertex_lookup.dig(vertex.x.round-1, vertex.y.round-1)
@@ -41,12 +41,12 @@ class IMICFPS
       smaller_list.each do |vert|
         next if vert.nil?
         if nearest
-          if distance(vert, vertex) < distance(vert, nearest)
+          if distance(vert, vertex) < distance(vert, nearest) && distance(vert, vertex) <= max_distance
             nearest = vert
           end
         end
 
-        nearest = vert unless nearest
+        nearest = vert unless nearest && distance(vert, vertex) > max_distance
       end
 
       return nearest

lib/window.rb

@@ -31,7 +31,7 @@ class IMICFPS
       # 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}
+      # 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)
@@ -51,16 +51,23 @@ class IMICFPS
       Light.new(x: 0, y: 100, z: 0, diffuse: Color.new(1.0, 0.5, 0.1))
     end
 
-    def draw
+    def glError?
       e = glGetError()
       if e != GL_NO_ERROR
         $stderr.puts "OpenGL error in: #{gluErrorString(e)} (#{e})\n"
         exit
       end
+    end
+
+    def draw
+      glError?
 
       gl do
+        glError?
         glClearColor(0,0.2,0.5,1) # skyish blue
+        glError?
         glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT) # clear the screen and the depth buffer
+        glError?
 
         LightManager.lights.each(&:draw)
 
@@ -82,6 +89,7 @@ class IMICFPS
 
     def update
       @last_frame_time = Gosu.milliseconds
+      begin
       string = <<-eos
 OpenGL Vendor: #{glGetString(GL_VENDOR)}
 OpenGL Renderer: #{glGetString(GL_RENDERER)}
@@ -99,6 +107,22 @@ Last Frame: #{delta_time*1000.0}ms (#{Gosu.fps} fps)
 Draw Skydome: #{@draw_skydome}
 Debug mode: <c=992200>#{$debug}</c>
 eos
+      rescue ArgumentError
+        string = <<-eos
+Unable to call glGetString!
+
+Camera pitch: #{@camera.pitch.round(2)} Yaw: #{@camera.yaw.round(2)} Roll #{@camera.roll.round(2)}
+Camera X:#{@camera.x.round(2)} Y:#{@camera.y.round(2)} Z:#{@camera.z.round(2)}
+#{if @camera.game_object then "Actor X:#{@camera.game_object.x.round(2)} Y:#{@camera.game_object.y.round(2)} Z:#{@camera.game_object.z.round(2)}";end}
+Field Of View: #{@camera.field_of_view}
+Mouse Sesitivity: #{@camera.mouse_sensitivity}
+Faces: #{@number_of_faces}
+Last Frame: #{delta_time*1000.0}ms (#{Gosu.fps} fps)
+
+Draw Skydome: #{@draw_skydome}
+Debug mode: <c=992200>#{$debug}</c>
+eos
+      end
       @text.text = string
 
       # ObjectManager.objects.each do |object|