我正在尝试在我的Ubuntu电脑上安装Gosu。为了安装gem,我尝试了"gem install gosu“,但是我收到了一条错误消息,我搞不清楚。它说它“未能构建gem本地扩展”。以下是完整的错误消息:Building native extensions. This could take a while...ERROR: Error installing gosu:
ERROR: Failed to build gem native exte
我应该在Gosu库中使用什么方法?#green rectangle that I want to give a hover effect (to become bold border)Gosu.draw_rect(50, 50, 100, 50, Gosu::Color::GREEN, ZOrder::MIDDLE, mode=:default)
end
我已经将RubyGems更新到了最新版本,我运行的是Ruby2.2.3p173,但是当我进入Powershell并像RubyGems说的那样输入gem install gosu时,我得到了这个错误: invalid gem: package is corrupt, exception while verifying: undefinedmethod `size' for nil:NilClass (NoMethodEr
ror) in C:/Ruby22-x64
Account).select()错误 at gw.internal.gosu.parser.GosuClassParser.parseDefinitions(GosuClassParser.java:471)
at gw.internal.gosu.parser.GosuClass.compileDefinitionsIfNeede
if Gosu::button_down?Gosu::KbLeft or Gosu::button_down?Gosu::GpLeft then end
if Gosu::button_down?Gosu::KbRight or Gosu::button_down?Gosu::KbUp or Gosu::button_down?