Module: Smalruby3::SpriteMethod::Motion

Included in:
Smalruby3::Sprite
Defined in:
lib/smalruby3/sprite_method/motion.rb

Overview

Motion category methods

Instance Method Summary collapse

Instance Method Details

#direction=(degrees) ⇒ Object 



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# File 'lib/smalruby3/sprite_method/motion.rb', line 35

def direction=(degrees)
  @direction = calc_direction(degrees)

  sync_direction
end

#go_to(destination) ⇒ Object 



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# File 'lib/smalruby3/sprite_method/motion.rb', line 21

def go_to(destination)
  if destination == "_random_"
    new_x = rand(SmalrubyToDXRuby::SCREEN_LEFT..SmalrubyToDXRuby::SCREEN_RIGHT)
    new_y = rand(SmalrubyToDXRuby::SCREEN_BOTTOM..SmalrubyToDXRuby::SCREEN_TOP)
    new_pos = [new_x, new_y]
  elsif destination == "_mouse_"
    new_pos = calc_mouse_position
  elsif destination.is_a?(Array)
    new_pos = destination
  end
  self.position = new_pos
  direction
end

#move(steps) ⇒ Object 



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# File 'lib/smalruby3/sprite_method/motion.rb', line 7

def move(steps)
  self.position = [x + @vector[:x] * steps, y + @vector[:y] * steps]
  position
end

#point_towards(towards) ⇒ Object 



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# File 'lib/smalruby3/sprite_method/motion.rb', line 41

def point_towards(towards)
  tx = sprite(towards).x
  ty = sprite(towards).y
  dx = tx - x
  dy = ty - y
  rad = Math.atan2(dx, dy)
  self.direction = rad * 180.0 / Math::PI
end

#position=(val) ⇒ Object 



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# File 'lib/smalruby3/sprite_method/motion.rb', line 62

def position=(val)
  @x = calc_x(val[0])
  @y = calc_y(val[1])

  sync_position
end

#turn_left(degrees) ⇒ Object 



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# File 'lib/smalruby3/sprite_method/motion.rb', line 17

def turn_left(degrees)
  turn_right(-degrees)
end

#turn_right(degrees) ⇒ Object 



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# File 'lib/smalruby3/sprite_method/motion.rb', line 12

def turn_right(degrees)
  self.direction += degrees
  direction
end

#x=(val) ⇒ Object 



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# File 'lib/smalruby3/sprite_method/motion.rb', line 50

def x=(val)
  @x = calc_x(val)

  sync_position
end

#y=(val) ⇒ Object 



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# File 'lib/smalruby3/sprite_method/motion.rb', line 56

def y=(val)
  @y = calc_y(val)

  sync_position
end