chore: Minor refactoring and license header.

Author: freezy

README.md

@@ -25,7 +25,7 @@ var mpfApi = new MpfApi(@"path\to\machine\folder");
 await mpfApi.Launch();
 
 // start MPF
-await mpfApi.Start();
+mpfApi.Start();
 
 // retrieve machine configuration
 var descr = await mpfApi.GetMachineDescription();

VisualPinball.Engine.Mpf.Test/Program.cs

@@ -1,4 +1,15 @@
-using System;
+// Visual Pinball Engine
+// Copyright (C) 2021 freezy and VPE Team
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+using System;
 using System.Collections.Generic;
 using System.Diagnostics;
 using System.Threading.Tasks;
@@ -15,7 +26,7 @@ static async Task Main(string[] args)
 
 			await mpfApi.Launch();
 
-			await mpfApi.Start(new Dictionary<string, bool> {
+			mpfApi.Start(new Dictionary<string, bool> {
 				{"sw_11", false},
 			});
 

VisualPinball.Engine.Mpf/MpfApi.cs

@@ -1,4 +1,15 @@
-using System;
+// Visual Pinball Engine
+// Copyright (C) 2021 freezy and VPE Team
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Threading.Tasks;
@@ -19,19 +30,21 @@ public MpfApi(string machineFolder)
 		/// <summary>
 		/// Launches MPF in the background and connects to it via gRPC.
 		/// </summary>
-		public async Task Launch()
+		/// <param name="port">gRPC port to use for MPC/VPE communication</param>
+		/// <returns></returns>
+		public async Task Launch(int port = 50051)
 		{
 			await _spawner.Spawn();
-			await _client.Connect();
+			await _client.Connect($"localhost:{port}");
 		}
 
 		/// <summary>
 		/// Starts MPF, i.e. it will start polling for switches and sending events.
 		/// </summary>
 		/// <param name="initialSwitches">Initial switch states of the machine</param>
-		public async Task Start(Dictionary<string, bool> initialSwitches = null)
+		public void Start(Dictionary<string, bool> initialSwitches = null)
 		{
-			await _client.Start(initialSwitches ?? new Dictionary<string, bool>());
+			_client.Start(initialSwitches ?? new Dictionary<string, bool>());
 		}
 
 		/// <summary>

VisualPinball.Engine.Mpf/MpfClient.cs

@@ -1,4 +1,15 @@
-using Grpc.Core;
+// Visual Pinball Engine
+// Copyright (C) 2021 freezy and VPE Team
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+using Grpc.Core;
 using System;
 using System.Collections.Generic;
 using System.Threading.Tasks;
@@ -12,14 +23,14 @@ internal class MpfClient : IDisposable
 		private Channel _channel;
 		private MpfHardwareService.MpfHardwareServiceClient _client;
 
-		public async Task Connect(string ipPort = "localhost:50051") {
+		public async Task Connect(string ipPort) {
 			Console.WriteLine($"Connecting to {ipPort}...");
 			_channel = new Channel(ipPort, ChannelCredentials.Insecure);
 			await _channel.ConnectAsync();
 			_client = new MpfHardwareService.MpfHardwareServiceClient(_channel);
 		}
 
-		public async Task Start(Dictionary<string, bool> initialSwitches)
+		public void Start(Dictionary<string, bool> initialSwitches)
 		{
 			var machineState = new MachineState();
 			machineState.InitialSwitchStates.Add(initialSwitches);

VisualPinball.Engine.Mpf/MpfSpawner.cs

@@ -1,4 +1,15 @@
-using System;
+// Visual Pinball Engine
+// Copyright (C) 2021 freezy and VPE Team
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+using System;
 using System.Diagnostics;
 using System.IO;
 using System.Runtime.InteropServices;