Bouncy Mouse - Powershell

BouncyMouse.ps1

using namespace System.Diagnostics
using namespace System.Windows.Forms
Add-Type -AssemblyName System.Windows.Forms

$ErrorActionPreference = 'Stop'

$screens = [Screen]::AllScreens

$speedX = 0;
$speedY = 0;

$gravity = 9.81;
$drag = 0.6;
$bounce = 0.9;

$lastPos = [Cursor]::Position
[long]$ts = [Stopwatch]::GetTimestamp()

function applyDrag([double]$inputvalue, [double]$drag) {
    if($inputvalue -gt 0) {
        return $inputvalue - $drag
    }
    if($speed -lt 0) {
        return $inputvalue + $drag
    }
    return $inputvalue;
}

while ($true) {
    $pos = [Cursor]::Position
    
    $mouseDelta = $pos - $lastPos

    $ticks = [Stopwatch]::GetTimestamp() - $ts
    $ts += $ticks
    $deltaTime = [double]$ticks / [timespan]::TicksPerSecond;

    $speedX += $mouseDelta.X * $deltaTime;
    $speedY += ($mouseDelta.Y + $gravity) * $deltaTime;

    $dragDelta = $drag * $deltaTime

    $speedX = applyDrag $speedX $dragDelta
    $speedY = applyDrag $speedY $dragDelta

    $lastPos.Offset($speedX, $speedY);
    [Cursor]::Position = $lastPos;
    foreach ($screen in $screens) {
        $bounds = $screen.Bounds;
        if ($bounds.Contains([Cursor]::Position)) {
            if ($lastPos.X -lt $bounds.Left -or $lastPos.X -gt $bounds.Right) {
                $speedX = - ($speedX * $bounce)
            }

            if ($lastPos.Y -lt $bounds.Top -or $lastPos.Y -gt $bounds.Bottom) {
                $speedY = - ($speedY * $bounce)
            }
            break;
        }
    }
    $lastPos = [Cursor]::Position;
    Start-Sleep -Milliseconds 1
}