godot-start/script/demo02_base/MyClass.gd

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extends Node2D
const StringUtils = preload("res://zfoo/util/StringUtils.gd")
# (optional) class definition with a custom icon
class_name MyClass, "res://icon.png"
# Member variables
# gds有5种基础类型BooleanInteger(Java long)Float(Java double)StringNull
# &&=and ||=or !=not
var a = (true or false) && true
var b = 9223372036854775807
var c = 1.5
var s = "Hello"
var arr = [1, 2, 3]
var dict = {
2: 3,
"key": "字符串作为key",
arr: "数组作为key"
}
var typed_var: int
var inferred_type: String = "String"
# Constants
const ANSWER = 42
const THE_NAME = "Charly"
# Enums
enum {LEFT, RRIGHT, FRONT, BACK}
# 等价于
# const LEFT = 0
# const RIGHT = 1
# const FRONT = 2
# const BACK = 3
enum FOOD {GOOD, NORMAL, BAD = -1}
# Built-in vector types
var v2 = Vector2(1, 2)
var v3 = Vector3(1, 2, 3)
func _init():
pass
static func getAnswer():
return ANSWER
func typeInfo():
var template = "[Variant:{}] [type:{}] [value:{}]"
print(StringUtils.format(template, [TYPE_BOOL, typeof(a), a]))
print(StringUtils.format(template, [TYPE_INT, typeof(b), b]))
print(StringUtils.format(template, [TYPE_INT, typeof(c), c]))
print(StringUtils.format(template, [TYPE_STRING, typeof(s), s]))
print(StringUtils.format(template, [TYPE_ARRAY, typeof(arr), arr]))
print(StringUtils.format(template, [TYPE_DICTIONARY, typeof(dict), dict]))
print(StringUtils.format(template, [TYPE_DICTIONARY, typeof(FOOD), FOOD]))
print(StringUtils.format(template, [TYPE_DICTIONARY, typeof(FOOD.GOOD), FOOD.GOOD]))
print(self is Node)
print(a is Dog) # 类似于instanceof
func some_function(param1, param2):
var local_var = 5
if param1 < local_var:
print(param1)
elif param2 > 5:
print(param2)
else:
print("Fail!")
match local_var:
1:
print("match1")
2:
print("match2")
5:
print("match5")
# continue
6:
print("match6")
_:
print("match_")
for i in range(20):
print(i)
while param2 != 0:
param2 -= 1
var local_var2 = param1 + 3
return local_var2
# Function
func arrayIterator():
# range等价于for(int i = 0; i < 20; i++)
print("数组遍历方法1")
for i in range(3):
print(i)
print("数组遍历方法2")
for ele in arr:
print(ele)
print("数组遍历方法3")
for index in range(arr.size()):
print(arr[index])
func dictionaryIterator():
print("字典遍历方法1")
for key in dict:
print("key:" + key as String)
print("value:" + dict[key] as String)
print("字典遍历方法2")
for key in dict.keys():
print("key:" + key as String)
print("value:" + dict[key] as String)
print("字典遍历方法3")
for value in dict.values():
print("value:" + value as String)
func innerClassTest():
var dog = Dog.new(1)
dog.move()
dog.info()
dog.height = 2
dog.info()
# Inner class默认继承Object
class Animal:
extends Object # 如果不指定继承的类默认基础Object
const STATIC_FIELD = "静态变量"
# 属性
var height: int
func _init():
print("Animal 构造方法")
func move():
print("animal移动")
static func staticFuction():
pass
class Dog:
extends Animal
# Constructor
func _init(height):
self.height = height
print("Dog 构造方法")
# Functions override functions with the same name on the base/parent class.
func move():
print("dog用4个脚跑")
# If you still want to call them, use '.' (like 'super' in other languages).
.move()
func info(parm = 100):
print("height" + height as String)