【Unity】【UniRx】ReactiveDictionary で辞書を監視する

Unity UniRx 
using UnityEngine;
using UniRx;

public class Sample : MonoBehaviour
{
    private ReactiveDictionary<int, string> _intDictionary = new ReactiveDictionary<int, string>();
    
    private void Start()
    {
        // 辞書を購読する
        this._intDictionary
            .ObserveAdd()
            .Subscribe(value =>
            {
                Debug.Log($"[Add]Key={value.Key},Value={value.Value}");
            });
        this._intDictionary
            .ObserveRemove()
            .Subscribe(value =>
            {
                Debug.Log($"[Remove]Key={value.Key},Value={value.Value}");
            });
        this._intDictionary
            .ObserveReplace()
            .Subscribe(value =>
            {
                Debug.Log($"[Replace]Key={value.Key},NewValue={value.NewValue},OldValue={value.OldValue}");
            });
        this._intDictionary
            .ObserveReset()
            .Subscribe(value =>
            {
                Debug.Log($"[Reset]");
            });
            

        // 値を変える
        this._intDictionary.Add(0, "1st");
        this._intDictionary.Add(1, "2nd");
        this._intDictionary.Add(2, "3rd");
        this._intDictionary.Remove(0);
        this._intDictionary.Clear();
    }
}

【Unity】【UniRx】ReactiveCollection で配列を監視する

Unity UniRx 
using UnityEngine;
using UniRx;

public class Sample : MonoBehaviour
{
    private ReactiveCollection<int> _intList = new ReactiveCollection<int>();
    
    private void Start()
    {
        // リストを購読する
        this._intList
            .ObserveAdd()
            .Subscribe(value =>
            {
                Debug.Log($"[Add]Index={value.Index},Value={value.Value}");
            });
        this._intList
            .ObserveMove()
            .Subscribe(value =>
            {
                Debug.Log($"[Move]Value={value.Value},NewIndex={value.NewIndex},OldIndex={value.OldIndex}");
            });
        this._intList
            .ObserveRemove()
            .Subscribe(value =>
            {
                Debug.Log($"[Remove]Index={value.Index},Value={value.Value}");
            });
        this._intList
            .ObserveReplace()
            .Subscribe(value =>
            {
                Debug.Log($"[Replace]Index={value.Index},NewValue={value.NewValue},OldValue={value.OldValue}");
            });
        this._intList
            .ObserveReset()
            .Subscribe(value =>
            {
                Debug.Log($"[Reset]");
            });

        // リストを更新する
        this._intList.Add(0);
        this._intList.Add(1);
        this._intList.Add(2);
        this._intList.Move(0, 2);
        this._intList.Remove(1);
        this._intList[0] = 3;
        this._intList.Clear();
    }
}

【Unity】【UniRx】ReactiveProperty で値を監視する

Unity UniRx 
using UnityEngine;
using UniRx;

public class Sample : MonoBehaviour
{
    private ReactiveProperty<int> _intValue = new ReactiveProperty<int>();
    
    private void Start()
    {
        // 変数を購読する
        this._intValue
            .Subscribe(value =>
            {
                Debug.Log($"[Subscribe]value={value}");
            });
        // 値を更新する
        this._intValue.Value = 1;
    }
}

ReactiveProperty<T> 以外にも下記のようなクラスがある。

  • IntReactiveProperty
  • LongReactiveProperty
  • ByteReactiveProperty
  • FloatReactiveProperty
  • DoubleReactiveProperty
  • StringReactiveProperty
  • BoolReactiveProperty
  • Vector2ReactiveProperty
  • Vector3ReactiveProperty
  • Vector4ReactiveProperty
  • ColorReactiveProperty
  • RectReactiveProperty
  • AnimationCurveReactiveProperty
  • BoundsReactiveProperty
  • QuaternionReactiveProperty

【Unity】最近の Unity パッケージまとめ 2021.04

Unity
パッケージ 2019.4 2020.3 2021.1 パッケージ名
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【Kivy】子ウィジェットの並び

Python Kivy
  • main.py
from kivy.app import App
from kivy.uix.button import Button
from kivy.clock import Clock

class MainApp(App):
    def on_start(self):
        # ウィジェット出力
        self.__print_widgets()

        # 指定時間後実行
        Clock.schedule_once(self.on_callback, 5.0)
    def on_callback(self, delta: float):
        # ウィジェット追加
        button = Button()
        button.text = 'New Button'
        self.root.add_widget(button)
        
        # ウィジェット出力
        self.__print_widgets()
    def __print_widgets(self):
        for widget in self.root.children:
            if isinstance(widget, Button):
                print('button = {}'.format(widget.text))

if __name__ == '__main__':
    MainApp().run()
  • main.kv
#:kivy 1.0
MainWidget:
<MainWidget@BoxLayout>
    Button:
        text: 'Button 1'
    Button:
        text: 'Button 2'
    Button:
        text: 'Button 3'
    Button:
        text: 'Button 4'
  • 結果
【1 回目の出力】
button = Button 4
button = Button 3
button = Button 2
button = Button 1

【2 回目の出力】
button = New Button
button = Button 4
button = Button 3
button = Button 2
button = Button 1

後から追加したウィジェットが先に追加される

youtu.be

【Kivy】特定のウィジェットにファイルをドラッグ＆ドロップする

Python Kivy
  • main.py
from kivy.app import App
from kivy.core.window import Window
from kivy.uix.label import Label

class MainApp(App):
    def build(self):
        Window.bind(on_dropfile=self.on_dropped_file)
        return
    def get_collide_widgets(self, collide_widgets, widget, pos):
        # children
        for child_widget in widget.children:
            self.get_collide_widgets(collide_widgets, child_widget, pos)
        # widget
        if widget.collide_point(pos[0], pos[1]):
            collide_widgets.append(widget)
    def on_dropped_file(self, window, file_path):
        widgets = []
        self.get_collide_widgets(widgets, self.root, window.mouse_pos)
        
        text: str = ''
        for widget in widgets:
            if isinstance(widget, Label):
                text += widget.text
                text += ', '
        self.root.text = '{}'.format(text)

if __name__ == '__main__':
    MainApp().run()
  • main.kv
#:kivy 1.0
MainWidget:
<MainWidget@FloatLayout>
    text: ''
    FloatLayout:
        name: 'FloatLayout 1'
        Label:
            text: 'Label 1'
            size_hint: 0.75, 0.75
            pos_hint: {'x':0.0, 'y':0.0}
            canvas:
                Color:
                    rgba: 1.0, 0.0, 0.0, 0.25
                Rectangle:
                    pos: self.pos
                    size: self.size
        Label:
            text: 'Label 2'
            size_hint: 0.75, 0.75
            pos_hint: {'x':0.25, 'y':0.0}
            canvas:
                Color:
                    rgba: 0.0, 1.0, 0.0, 0.25
                Rectangle:
                    pos: self.pos
                    size: self.size
    FloatLayout:
        name: 'FloatLayout 2'
        Label:
            text: 'Label 3'
            size_hint: 0.75, 0.75
            pos_hint: {'x':0.0, 'y':0.25}
            canvas:
                Color:
                    rgba: 0.0, 0.0, 1.0, 0.25
                Rectangle:
                    pos: self.pos
                    size: self.size
        Label:
            text: 'Label 4'
            size_hint: 0.75, 0.75
            pos_hint: {'x':0.25, 'y':0.25}
            canvas:
                Color:
                    rgba: 1.0, 1.0, 1.0, 0.25
                Rectangle:
                    pos: self.pos
                    size: self.size
    Label:
        text: root.text
        text_size: self.size
        size_hint: 1.0, None
        size: 1.0, 50
        pos_hint: {'x':0.0, 'y':0.0}
  • 結果

youtu.be

【Kivy】カルーセルでウィジェットをスライドさせる

Python Kivy
  • main.py
from kivy.app import App

class MainApp(App):
    pass

if __name__ == '__main__':
    MainApp().run()
  • main.kv
#:kivy 1.0
Carousel:
    direction: 'right'
    Button:
        text: 'Button 1'
    Button:
        text: 'Button 2'
    Button:
        text: 'Button 3'
    Button:
        text: 'Button 4'
  • 結果

youtu.be