Class: Hate::Graphics::Window

Inherits:
Object
  • Object
show all
Defined in:
lib/hate/graphics/window.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(w = nil, h = nil, title = 'New Game') ⇒ Window

Returns a new instance of Window.



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# File 'lib/hate/graphics/window.rb', line 14

def initialize(w=nil, h=nil, title='New Game')
  @width  = w || Hate::Graphics::DEFAULT_WIDTH
  @height = h || Hate::Graphics::DEFAULT_HEIGHT
  
  @frames = 0
  
  if SDL.Init(SDL::INIT_EVERYTHING) == 0
     SDL.EnableUNICODE(1)
  else
     throw Main::Graphics::SDLException, "SDL Exception: #{SDL.GetError()}"
  end
  SDL.SetVideoMode(@width, @height, 24, SDL::OPENGL)
  SDL.Init(SDL::INIT_VIDEO)

  glEnable(GL_DEPTH_TEST)
  glEnable(GL_CULL_FACE)
  glEnable(GL_COLOR_MATERIAL)
  
  glShadeModel(GL_SMOOTH)
  glClearColor(1.0, 1.0, 1.0, 0.0)
  glClearDepth(1.0)
  glDepthFunc(GL_LEQUAL)
  glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST) # Small performance hit
  
  # Hardware lights
  Hate::Graphics::Manager.lights.each_with_index do |light, i|
    glLightfv(eval("GL_LIGHT%i" % (i + 1)), GL_AMBIENT, light.ambient)
    glLightfv(eval("GL_LIGHT%i" % (i + 1)), GL_DIFFUSE, light.diffuse)
    glLightfv(eval("GL_LIGHT%i" % (i + 1)), GL_POSITION, light.position)
    glEnable(eval("GL_LIGHT%i" % (i + 1)))
  end
  glEnable(GL_LIGHTING) if Hate::Graphics::Manager.lights.size > 0
  
  reshape(@width, @height)
end

Instance Attribute Details

#frames ⇒ Object (readonly)

Returns the value of attribute frames.



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# File 'lib/hate/graphics/window.rb', line 12

def frames
  @frames
end

#height ⇒ Object (readonly)

Returns the value of attribute height.



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# File 'lib/hate/graphics/window.rb', line 11

def height
  @height
end

#width ⇒ Object (readonly)

Returns the value of attribute width.



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# File 'lib/hate/graphics/window.rb', line 11

def width
  @width
end

Instance Method Details

#draw ⇒ Object 



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# File 'lib/hate/graphics/window.rb', line 50

def draw
  glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)
  Hate::Core::Callbacks.draw
  Hate::Graphics::Manager.run
  SDL.GL_SwapBuffers()
  @frames += 1
end

#events(event) ⇒ Object 



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# File 'lib/hate/graphics/window.rb', line 69

def events(event)
  case event.type
  when SDL::KEYDOWN
    Hate::Input::Keyboard.pressed(event.keysym.sym)
  when SDL::KEYUP
    Hate::Input::Keyboard.released(event.keysym.sym)
  when SDL::MOUSEBUTTONDOWN
    Hate::Input::Mouse.pressed(event.x, event.y, event.button)
  when SDL::MOUSEBUTTONUP
    Hate::Input::Mouse.released(event.x, event.y, event.button)
  when SDL::MOUSEMOTION
    Hate::Input::Mouse.motion(event.x, event.y, event.xrel, event.yrel, event.state)
  when SDL::VIDEORESIZE
    reshape(event.w, event.h)
  end
end

#quit ⇒ Object 



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# File 'lib/hate/graphics/window.rb', line 97

def quit
  SDL.QuitSubSystem(SDL::INIT_VIDEO)
  SDL.Quit
end

#reshape(x, y) ⇒ Object 



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# File 'lib/hate/graphics/window.rb', line 58

def reshape(x, y)
  Hate::Graphics::Manager.default_camera.reshape(x, y)
end

#start ⇒ Object 



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# File 'lib/hate/graphics/window.rb', line 90

def start
  loop do
    update
    draw
  end
end

#time ⇒ Object 



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# File 'lib/hate/graphics/window.rb', line 86

def time
  
end

#update ⇒ Object 



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# File 'lib/hate/graphics/window.rb', line 62

def update
  until (event = SDL::PollEvent()).nil?
    events(event)
  end
  Hate::Core::Callbacks.update if @frames % 2 == 0 # Only call update every second cycle
end