全局变量数据未通过[Godot.2.15]

Global variable data not passed [Godot.2.15]

我在 Godot 中创建了一个 "Addition mental math calculator",用户在点击 "on_Button_pressed" 按钮时会看到一个新问题,总和存储在 "global var c " 中,然后访问输入通过 "Lineedit" 并存储在 "var d" 中。但是,当传递 "var c" 与 "Lineedit" 中的 "var d" 进行比较时,它会传递一个 "Null" 值。如何在两个函数之间传递值。

extends Panel

# global variables
var a = " "
var b = " "
var c = " "
var d = " "

func _ready():
    pass

#Generate Random number and store sum in "var c"    
func _on_Button_pressed():

    randomize()
    var a = floor (rand_range(1,100))
    var b = floor (rand_range(1,100))

    var c = a+b
    print (a)
    print (b)
    print ("c = "+ str(c))

    get_node("RichTextLabel").set_text(str(a)+"+"+str(b)+"=")



#User_input
func _on_LineEdit_text_entered( text ):
    d = get_node("LineEdit").text

#pass sum "var c" for comparison with user_input "var d" 

print(c)<-- NUll value being passed.


#Accesing value via node method
#   var e = get_node("Panel").get("c").to_float()<-- Error-"Panel node doesn't exist"
#   print(e)


#convert d to float 
    var f = d.to_float()
    print(f)

#Compare sum with user_input
#   if  f == c:
#       get_node("RichTextLabel").set_text("Right Answer")
#   else:
#       get_node("RichTextLabel").set_text("Wrong Answer")

尝试替换行

var c = a + b

c = a + b

var c 正在声明一个在函数范围内工作的新 var。 var 关键字应该在代码的最外层声明。

希望对您有所帮助!