ebiten/examples/vibrate/main.go

// Copyright 2021 The Ebiten Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

//go:build example
// +build example

package main

import (
	"log"
	"time"

	"github.com/hajimehoshi/ebiten/v2"
	"github.com/hajimehoshi/ebiten/v2/ebitenutil"
	"github.com/hajimehoshi/ebiten/v2/inpututil"
)

const (
	screenWidth  = 640
	screenHeight = 480
)

type Game struct {
	touchIDs []ebiten.TouchID
}

func (g *Game) Update() error {
	g.touchIDs = g.touchIDs[:0]
	g.touchIDs = inpututil.AppendJustPressedTouchIDs(g.touchIDs)
	if len(g.touchIDs) > 0 {
		op := &ebiten.VibrateOptions{
			Duration:        200 * time.Millisecond,
			StrongMagnitude: 1,
		}
		ebiten.Vibrate(op)
	}

	return nil
}

func (g *Game) Draw(screen *ebiten.Image) {
	ebitenutil.DebugPrint(screen, "Touch the screen to vibrate the screen.")
}

func (g *Game) Layout(outsideWidth, outsideHeight int) (int, int) {
	return screenWidth, screenHeight
}

func main() {
	ebiten.SetWindowTitle("Vibrate (Ebiten Demo)")
	if err := ebiten.RunGame(&Game{}); err != nil {
		log.Fatal(err)
	}
}