Examples/04/JeffHicks_StarShipModule.ps1
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#requires -version 5.0 #The original script/Module is available here --> https://github.com/jdhitsolutions/myStarShip #All rights go to Jeff Hicks #demonstrate PowerShell classes in v5 using inheritance #This is a Non-DSC resource example. #region Enums Enum ShipClass { Shuttle Clipper Frigate Transport XWing Cruiser Destroyer Battlestar Dreadnought } Enum ShipSpeed { Stopped Impulse Sublight Translight } Enum Cloak { Absent Present } #endregion #region general class definition Class mystarshIp { #region properties [ValidateNotNullorEmpty()] [string]$Name [ValidateNotNullorEmpty()] [Shipclass]$ShipClass [ValidateNotNullorEmpty()] [ShipSpeed]$Speed [ValidateRange(1,1000)] [int]$Crew = 1 [boolean]$Shields = $False [ValidateRange(0,20)] [int]$Torpedos = 0 [string]$Captain = $env:USERNAME [Cloak]$CloakingDevice #These are hidden properties hidden [string]$Transponder = [guid]::NewGuid().Guid hidden [datetime]$ManufacturingDate = (Get-Date).AddYears(245) #endregion #region methods #returns the new crew complement [int]AddCrew([int]$Number) { $this.Crew+= $Number return $this.Crew } [timespan]GetAge() { $timespan = (Get-Date).AddYears(250) - $this.ManufacturingDate return $timespan } [string]GetAge([switch]$AsString) { $timespan = (Get-Date).AddYears(250) - $this.ManufacturingDate return $timespan.ToString() } #return True or False if operation was successful [Boolean]RaiseShields() { if (-Not $this.shields) { $this.shields = $True #must use Return keyword Return $True } else { Write-Warning "Are you paying attention Captain $($this.captain)? The shields are already up." Return $False } } #close RaiseShields method [Boolean]LowerShields() { if ($this.shields) { $this.shields = $False Return $True } else { Write-Warning "Are you paying attention Captain $($this.captain)? The shields are already down." Return $False } } #close RaiseShields method [void]OpenCommunication () { 1..7 | foreach { $f = Get-Random -Minimum 500 -Maximum 1200 $d = Get-Random -Minimum 90 -Maximum 125 [console]::Beep($f,$d) } } #close OpenCommunication #region using overloads [void]Fire() { if ($this.Torpedos -gt 0 ) { Write-Host "Fire!" -ForegroundColor Red -BackgroundColor Yellow $this.Torpedos-=1 } else { Write-Warning "There's nothing left to fire." } } #close first Fire method [void]Fire([int]$Count) { 1..$count | foreach { if ($this.Torpedos -ge $_) { Write-Host "Fire $_ !" -ForegroundColor Red -BackgroundColor Yellow $this.Torpedos-=1 Start-Sleep -Milliseconds 200 } else { Write-Warning "There's nothing left to fire." #bail out Break } } } #close second Fire method #endregion #endregion #region constructor #I have 2 ways of constructing an instance of this class MyStarship() {} MyStarShip([string]$Name,[ShipClass]$ShipClass) { $this.Name = $Name $this.ShipClass = $ShipClass $this.Speed = "Stopped" } #endregion } #close MyStarship #endregion Class Cruiser : MyStarship { #define different property defaults [ShipClass]$ShipClass = [shipclass]::Cruiser [int]$Torpedos = 10 [int]$Crew = 200 #custom constructor Cruiser([string]$Name) { $this.name = $Name } } Class Dreadnought : MyStarShip { [ShipClass]$ShipClass = [shipclass]::Dreadnought [int]$Torpedos = 20 [int]$Crew = 900 [Cloak]$CloakingDevice = [cloak]::Present #add a new property [ValidateRange(1,100)] [int]$FluxCapacitor = 50 #add a new method [boolean]TestFluxCapacitor() { if ($this.FluxCapacitor -ge 50) { Return $True } else { Return $False } } Dreadnought([string]$Name) { $this.name = $Name } } RETURN #region fun with the class #look at constructor [cruiser]::new $a = [Cruiser]::new("Barney") $a $a | Get-Member $a.Speed = "impulse" $b = [dreadnought]::new("Cerebus") $b | Get-Member $b $b.TestFluxCapacitor() $b.fire(5) $b | format-table $c = [MyStarship]::new("Ad Astra","Clipper") $c.Captain = 'Jason' $c $a,$b,$c | format-table -AutoSize #add some type information Update-TypeData -TypeName MyStarship -DefaultDisplayPropertySet "Name","ShipClass","Captain","Crew","Speed" $c $a $a,$b,$c #You could also come up with custom format extensions. Care to try? #endregion |