DragonRuby MatrixFunctions monkey patch

vec2_monkeypatch.rb

module Vec2Extensions
  def + other
    return super other if other.is_a? Vec2
    vec2 x + other, y + other if other.is_a? Numeric
  end

  def - other
    return vec2 x - other.x, y - other.y if other.is_a? Vec2
    vec2 x - other, y - other if other.is_a? Numeric
  end

  def * other
    return super other if other.is_a? Vec2
    vec2 x * other, y * other if other.is_a? Numeric
  end

  def / other
    vec2 x / other, y / other if other.is_a? Numeric
  end
end

class Vec2
  prepend Vec2Extensions
end