Class: Gosu::Square

Inherits:
Object
  • Object
show all
Defined in:
lib/gosu_android/physics/physicsObject.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(window, file_name, x, y, z, size, mass_inverted, velocity_x = 0, velocity_y = 0, restitution = 1, tileable = false) ⇒ Square

Returns a new instance of Square.



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# File 'lib/gosu_android/physics/physicsObject.rb', line 34

def initialize(window, file_name, x, y, z, size, mass_inverted,
  velocity_x = 0, velocity_y = 0, restitution = 1, tileable = false)
  @window = window
  @position = [x,y]
  @size = size / 2
  @center = [@position[0] + @size, @position[1] + @size]
  @z = z
  @restitution = restitution
  @velocity = [velocity_x, velocity_y]
  @mass_inverted = mass_inverted
  @image = Gosu::Image.new(@window, file_name , tileable)
  @dt = @window.update_interval
end

Instance Attribute Details

#center ⇒ Object (readonly)

Returns the value of attribute center.



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# File 'lib/gosu_android/physics/physicsObject.rb', line 32

def center
  @center
end

#mass_inverted ⇒ Object (readonly)

Returns the value of attribute mass_inverted.



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# File 'lib/gosu_android/physics/physicsObject.rb', line 33

def mass_inverted
  @mass_inverted
end

#position ⇒ Object (readonly)

Returns the value of attribute position.



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# File 'lib/gosu_android/physics/physicsObject.rb', line 32

def position
  @position
end

#restitution ⇒ Object (readonly)

Returns the value of attribute restitution.



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# File 'lib/gosu_android/physics/physicsObject.rb', line 33

def restitution
  @restitution
end

#velocity ⇒ Object

Returns the value of attribute velocity.



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# File 'lib/gosu_android/physics/physicsObject.rb', line 31

def velocity
  @velocity
end

Instance Method Details

#draw ⇒ Object 



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# File 'lib/gosu_android/physics/physicsObject.rb', line 71

def draw
  @image.draw(@position[0], @position[1], @z)
end

#generate_contact(other_object) ⇒ Object 



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# File 'lib/gosu_android/physics/physicsObject.rb', line 54

def generate_contact other_object
  if other_object.class == Square
  elsif other_object.class == Plane
    if @center[0] - @size < other_object.top_limit[0] and other_object.bottom_limit[0] < @center[0] + @size and
      @center[1] - @size < other_object.bottom_limit[1] and other_object.top_limit[1] < @center[1] + @size
      #Calculate new velocity, after the hit
      if other_object.type == :vertical
        @velocity[0] -= (1 + @restitution) * @velocity[0]
      else
        @velocity[1] -= (1 + @restitution) * @velocity[1]
      end
      #Call window event
      @window.object_collided( @position[0], @position[1], other_object )
    end
  end
end

#integrate ⇒ Object 



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# File 'lib/gosu_android/physics/physicsObject.rb', line 48

def integrate
  @position[0] += @velocity[0]*@dt
  @position[1] += @velocity[1]*@dt
  @center = [@position[0] + @size, @position[1] + @size]
end