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因为购买了一个圆形按钮，想着用它来作什么。它有五个按键：左、右、按下、按下左、按下右。
使用Godot制作一个圆形菜单，按下键作为确认，左右进行选择。多余的按下左右作为旋转控制(实际没啥用)。
把工程设为透明，置顶，无窗口。代码实现了拖动功能。定义好功能按钮。
为了简单(懒)，通过前端定义了RichTextlLabel，代码直接复制过来用。
完善一下，从配置文件读取，即可实现选择并执行的功能。
extends Node2D
var default_font = ThemeDB.fallback_font
var default_font_size = ThemeDB.fallback_font_size
var center_point = Vector2(250,250)
var _time = 0
var textNum = 8
var richTextObj = []
var speed = 0
var richTextTitle = ["关闭计算机","我的电脑","截屏","静音","打开工作","打开博客","系统设置","快捷功能"]
var Select = 0
# 关于拖动窗口
var is_dragging
var relaty
func setRichText():
var num = 0
for n in richTextTitle:
var tmpStr = "[center]"
var fontSize = 32
for i in n:
tmpStr = tmpStr + "[font_size=" + str(fontSize) + "]" + i + "[/font_size]\r"
fontSize=fontSize-4
richTextTitle[num] = tmpStr + "[/center]"
num=num+1
func _input(event: InputEvent) -> void:
# 拖动
if event is InputEventMouseMotion and is_dragging:
get_tree().root.position = relaty + DisplayServer.mouse_get_position()
if event is InputEvent:
if event.is_action_pressed("SpeedAdd"):
speed=speed+5
if speed>100:
speed=100
elif event.is_action_pressed("SpeedSub"):
speed=speed-5
if speed<0:
speed=0
elif event.is_action_pressed("SelectDown"):
Select=Select+1
if Select>7:
Select=0
elif event.is_action_pressed("SelectUp"):
Select=Select-1
if Select<0:
Select=7
elif event.is_action_pressed("SelectEnter"): # 按回车键
if speed==0: # 不旋转时，选择功能
print(Select)
else: # 旋转时,停转
speed=0
func _ready() -> void:
setRichText()
for i in textNum:
richTextObj.append($RichTextLabel.duplicate())
richTextObj[i].text = richTextTitle[i]
richTextObj[i].rotation_degrees = 45*i + 22.5
richTextObj[i].visible = true
add_child(richTextObj[i])
$RichTextLabel.visible = false
func _process(delta: float) -> void:
# 拖动处理
if Input.is_mouse_button_pressed(MOUSE_BUTTON_LEFT):
if(is_dragging==false):
var mouse_pos = DisplayServer.mouse_get_position()
var root_pos = get_tree().root.position
relaty=(root_pos-mouse_pos)
#print(relaty)
is_dragging=true
else:
is_dragging=false
_time += delta*speed
for i in textNum:
richTextObj[i].rotation_degrees = richTextObj[i].rotation_degrees + delta * speed
#if richTextObj[i].rotation_degrees>=340 && richTextObj[i].rotation_degrees<370:
if i==Select:
richTextObj[i].text = "[outline_size=5][outline_color=black]\r" + richTextTitle[i] + "\r[/outline_color][/outline_size]"
else:
richTextObj[i].text = richTextTitle[i]
if (_time>360):
_time = 0
for i in textNum:
richTextObj[i].rotation_degrees = 45 * i + 22.5
queue_redraw()
func _draw() -> void:
draw_arc(center_point,252,0,PI*2,100,Color(1.0,1.0,1.0,0.3),0.4,true) # 画一个圆弧（2PI就是画一个圆）
draw_circle(center_point,248,Color.BLACK)
for i in range(_time+0,_time+360,45):
draw_circle_arc_poly(center_point,246,i,i+44.0,Color(0.6,0.6,(i-_time)/360.0,1.0))
#draw_string_outline(default_font, Vector2(66, 66), "圆形菜单", HORIZONTAL_ALIGNMENT_CENTER, 350, default_font_size * 2.0,2,Color(0.1,0.1,0.1,0.3))
#draw_string(default_font,Vector2(64,64),"圆形菜单",HORIZONTAL_ALIGNMENT_CENTER,350,default_font_size*2.0,Color.BLUE)
# 画一个扇形
func draw_circle_arc_poly(center, radius, angle_from, angle_to, color):
var nb_points = 32
var points_arc = PackedVector2Array()
points_arc.push_back(center)
var colors = PackedColorArray([color])
for i in range(nb_points + 1):
var angle_point = deg_to_rad(angle_from + i * (angle_to - angle_from) / nb_points - 90)
points_arc.push_back(center + Vector2(cos(angle_point), sin(angle_point)) * radius)
draw_polygon(points_arc, colors)