使用Gosu.button_down显示点击屏幕次数

Question

我正在用戈苏做一个红宝石程序。每次单击屏幕上的按钮时，我都要显示鼠标点击次数。请帮我处理这个。非常感谢

require 'rubygems'
require 'gosu'

module ZOrder
  BACKGROUND, MIDDLE, TOP = *0..2
end

WIN_WIDTH = 640
WIN_HEIGHT = 400
class DemoWindow < Gosu::Window
  def initialize
    super(WIN_WIDTH, WIN_HEIGHT, false)
    @background = Gosu::Color::WHITE
    @button_font = Gosu::Font.new(20)
    @info_font = Gosu::Font.new(10)
    @locs = [60,60]
  end

  def draw
 
    Gosu.draw_rect(0, 0, WIN_WIDTH, WIN_HEIGHT, @background, ZOrder::BACKGROUND, mode=:default)
    if area_clicked(mouse_x, mouse_y)
      draw_line(50, 50, Gosu::Color::BLACK, 150, 50, Gosu::Color::BLACK, ZOrder::TOP, mode=:default)
      draw_line(50, 50, Gosu::Color::BLACK, 50, 100, Gosu::Color::BLACK, ZOrder::TOP, mode=:default)
      draw_line(150, 50, Gosu::Color::BLACK, 150, 101, Gosu::Color::BLACK, ZOrder::TOP, mode=:default)
      draw_line(50, 100, Gosu::Color::BLACK, 150, 100, Gosu::Color::BLACK, ZOrder::TOP, mode=:default)
    end
    Gosu.draw_rect(50, 50, 100, 50, Gosu::Color::GREEN, ZOrder::MIDDLE, mode=:default)
    @button_font.draw_text("Click me", 60, 60, ZOrder::TOP, 1.0, 1.0, Gosu::Color::BLACK)
    @info_font.draw_text("mouse_x: #{mouse_x}", 0, 350, ZOrder::TOP, 1.0, 1.0, Gosu::Color::BLACK)
    @info_font.draw_text("mouse_y: #{mouse_y}", 100, 350, ZOrder::TOP, 1.0, 1.0, Gosu::Color::BLACK )

    if Gosu.button_down? Gosu::MsLeft
        index =0
        button = area_clicked(mouse_x, mouse_y)
        case button
        when 1
            index+=1
            @info_font.draw("Times Click: #{index}", 370, 350, ZOrder::TOP, 1.0, 1.0, Gosu::Color::BLACK)
  end
end
end
  def needs_cursor?; true; end



  def area_clicked(mouse_x, mouse_y)
    if ((mouse_x > 50 and mouse_x < 150) and (mouse_y > 50 and mouse_y < 100))
      return 1
    else
    end
  end




  def button_down(id)
    if id == Gosu::KB_ESCAPE
        close
    else
        super
    end
end
end


DemoWindow.new.show

下面是我添加的代码。当我单击该按钮时，它只显示单击次数为1，但是，我需要它来显示我单击的次数。

Answer 1

这是因为每次单击鼠标时都会将索引设置为零(index =0)。您可能应该在initialize函数中将索引设置为零，并将其设置为类变量(将@添加到前面)。

那么初始化代码将是：

def initialize
  super(WIN_WIDTH, WIN_HEIGHT, false)
  @background = Gosu::Color::WHITE
  @button_font = Gosu::Font.new(20)
  @info_font = Gosu::Font.new(10)
  @locs = [60,60]
  @index = 0
end

鼠标单击的代码是：

if Gosu.button_down? Gosu::MsLeft
    button = area_clicked(mouse_x, mouse_y)
    case button
    when 1
        @index += 1
        @info_font.draw("Times Click: #{@index}", 370, 350, ZOrder::TOP, 1.0, 1.0, Gosu::Color::BLACK)