Pong

Pong

setMode(.paddle) · posX, lateral

Pong in the sample app is a Breakout-style arcade game: colored brick rows at the top, a paddle at the bottom, and a bouncing pixel ball. You steer only with cap tilt — no touch required during play.

How you play

1. From the main menu, open Connect and pair your BLE controller (physical iPhone).
2. Calibrate when prompted — hold the cap level, centered.
3. Launch Pong from the menu.
4. Tilt left → paddle moves left; tilt right → paddle moves right.
5. Keep the ball in play and break bricks. Bricks have 1–3 hit points (cyan → yellow → red).
6. You start with 5 lives. Missing the ball costs one life; clearing all bricks wins the round.

The homepage and Demo page show a live pixel preview of the same posX mapping.

VeltoKit mapping

Setting	Value
MotionMode	.paddle
Primary field	posX (normalized steering, center ≈ 0)
Also useful	lateral / lateralSmooth (HUD in sample app)
Button	Optional — not required for core Pong loop

In the sample, paddle X is derived from center + scaled posX:

targetX = courtCenter + input.posX × paddleScreenScale

GameManager applies the .paddle preset when Pong starts (GameInputProfile.pong in app/Engine/Game.swift).

Integrate in your app

import VeltoKit

let motion = MotionSDK()
motion.setMode(.paddle)
motion.connect()

// Game loop (~60 Hz):
func tick(dt: TimeInterval) {
  let input = motion.pollInput(deltaTime: dt)
  let center = courtWidth / 2
  let scale: CGFloat = 66   // tune to your court
  paddle.center.x = center + CGFloat(input.posX) * scale
}

Manual BLE (your own central):

motion.enqueueBLE(bytes)
motion.updateFrame(deltaTime: dt)
let input = motion.input

Sample app source

File	Role
app/Games/PongGame.swift	Physics, bricks, lives, update(input:)
app/Engine/GameManager.swift	Applies .paddle + MotionConfig.preset
app/UI/GameView.swift	Hosts game loop + HUD

Tips

• Calibrate on a flat, neutral pose so posX rests near zero when you aim straight.
• If the paddle feels sluggish, raise MotionConfig.paddlePositionFollow or lower smoothing — see Configuration.
• Pong is the simplest reference for one-axis tilt before Dart or Bowling.

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