Euler movement test

euler.swift

//: Playground - noun: a place where people can play

import UIKit
import PlaygroundSupport

// Helper functions
func * (point: CGPoint, scalar: CGFloat) -> CGPoint {
    return CGPoint(x: point.x * scalar, y: point.y * scalar)
}
func + (left: CGPoint, right: CGPoint) -> CGPoint {
    return CGPoint(x: left.x + right.x, y: left.y + right.y)
}
func / (point: CGPoint, scalar: CGFloat) -> CGPoint {
    return CGPoint(x: point.x / scalar, y: point.y / scalar)
}

// Variables
var timerCount = 0
let maxTimeCount = 100
let framerate = 1.0
var position = CGPoint(x: 0, y: 0)
var velocity = CGPoint(x: 0, y: 0)
var acceleration = CGPoint(x: 10, y: 0) // Force
let mass = 1

// Update function
func update(deltaTime: Double) {
    position = position + velocity * CGFloat(deltaTime)
    velocity = velocity + (acceleration / CGFloat(mass) * CGFloat(deltaTime))
}

// Run update function
while (timerCount < maxTimeCount) {
    timerCount += 1
    update(deltaTime: 1.0.divided(by: framerate))
}