add SDL logger implementation

Blarg.GameFramework.SDL2/Blarg.GameFramework.SDL2.csproj

@@ -47,6 +47,7 @@
     <Compile Include="Input\SDLKeyboard.cs" />
     <Compile Include="Input\SDLMouse.cs" />
     <Compile Include="IO\SDLFileSystem.cs" />
+    <Compile Include="SDLLogger.cs" />
   </ItemGroup>
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
   <ItemGroup>

Blarg.GameFramework.SDL2/SDLLogger.cs

@@ -0,0 +1,50 @@
+using System;
+using System.Text;
+
+namespace Blarg.GameFramework
+{
+	public class SDLLogger : IPlatformLogger
+	{
+		StringBuilder _sb;
+
+		public SDLLogger()
+		{
+			_sb = new StringBuilder(8192);
+		}
+
+		public void Info(string category, string format, params object[] args)
+		{
+			WriteLine("INFO", category, format, args);
+		}
+
+		public void Warn(string category, string format, params object[] args)
+		{
+			WriteLine("WARN", category, format, args);
+		}
+
+		public void Error(string category, string format, params object[] args)
+		{
+			WriteLine("ERROR", category, format, args);
+		}
+
+		public void Debug(string category, string format, params object[] args)
+		{
+			WriteLine("DEBUG", category, format, args);
+		}
+
+		private void WriteLine(string tag, string category, string format, params object[] args)
+		{
+			_sb.Clear();
+
+			var date = DateTime.Now;
+
+			_sb.AppendFormat("[{0:00}:{1:00}:{2:00},{3:000}] ", date.Hour, date.Minute, date.Second, date.Millisecond);
+			_sb.AppendFormat("[{0}] [{1}] ", tag, category);
+			_sb.AppendFormat(format, args);
+			_sb.Append(Environment.NewLine);
+
+			Console.Write(_sb.ToString());
+		}
+	}
+}
+