ruby - 使用 Gosu.button_down 显示点击屏幕的次数
问题描述
我正在使用 Gosu 开发一个 ruby 程序。我想在每次单击屏幕上的按钮时显示鼠标单击次数。请帮我解决一下这个。太感谢了
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。当我点击按钮时,它只显示点击次数为1,但是,我需要它来显示我点击的次数。
解决方案
这是因为每次单击鼠标时都会将索引设置回零 ( index =0
)。您可能应该在initialize
函数中将索引设置为零,并将其设为类变量(添加@
到前面)。
那么您的初始化代码将是:
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
鼠标点击的代码是:
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)
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