凉鞋的 Godot 笔记 203. 变量的常用类型

news2024/10/5 13:15:22

203. 变量的常用类型

在上一篇，我们对变量进行了概述和简介，知识地图如下：

我们已经接触了，变量的字符串类型，以及一些功能。

在这一篇，我们尝试多接触一些变量的类型。

首先是整数类型。

整数类型

整数类型一般是 int 类型，我们来看下如何使用，代码如下:

extends Node


# Called when the node enters the scene tree for the first time.
func _ready():
	var textToPrint = 5
	
	print(textToPrint)
	print(textToPrint)
	print(textToPrint)
	print(textToPrint)
	print(textToPrint)
	
	textToPrint = 0
	
	print(textToPrint)
	print(textToPrint)
	print(textToPrint)
	print(textToPrint)
	print(textToPrint)
	
	pass # Replace with function body.


# Called every frame. 'delta' is the elapsed time since the previous frame.
func _process(delta):
	pass

运行之后，结果如下:

我们当然也可以指定这个变量为 int 类型，代码如下:

var textToPrint: int = 5

整数类型（一般叫整型），在游戏开发中使用的频率非常高，比如角色的等级、经验值、金币都是使用整型进行记录和存储。

实数类型

实数其实就是带有小数点的类型，比如 0.1，0.0，5.5 都是实数类型。

在 GDScript 中用 float 表示。

我们写一些代码测试一下，如下:

extends Node


# Called when the node enters the scene tree for the first time.
func _ready():
	var textToPrint: float = 5.5
	
	print(textToPrint)
	print(textToPrint)
	print(textToPrint)
	print(textToPrint)
	print(textToPrint)
	
	# float 类型还可以接收 int 类型的值，但是会自动转换成 float 类型
	textToPrint = 0 
	
	print(textToPrint)
	print(textToPrint)
	print(textToPrint)
	print(textToPrint)
	print(textToPrint)
	
	pass # Replace with function body.


# Called every frame. 'delta' is the elapsed time since the previous frame.
func _process(delta):
	pass

运行之后，结果如下:

实数类型（float 类型或浮点数类型），在游戏开发中使用的频率也非常高，比如角色的血量条、一些数值、比如暴击率，都是 float 类型的。

逻辑真假类型

逻辑真假类型叫做布尔类型（bool 类型或 boolean 类型）。

布尔类型只有两个值，true 或 false，即真和假。

我们先写代码测试下:

extends Node


# Called when the node enters the scene tree for the first time.
func _ready():
	var textToPrint: bool = true
	
	print(textToPrint)
	print(textToPrint)
	print(textToPrint)
	print(textToPrint)
	print(textToPrint)
	
	textToPrint = false
	
	print(textToPrint)
	print(textToPrint)
	print(textToPrint)
	print(textToPrint)
	print(textToPrint)
	
	pass # Replace with function body.


# Called every frame. 'delta' is the elapsed time since the previous frame.
func _process(delta):
	pass