#32: theaded Skeleton loop for game cycle

saku-koodari · Aug 30, 2016 · 1a944f0 · 1a944f0
1 parent 83e8bdd
commit 1a944f0
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Showing 2 changed files with 27 additions and 12 deletions.
diff --git a/WinBoyEmulator/GameBoy/CPU/LR35902.cs b/WinBoyEmulator/GameBoy/CPU/LR35902.cs
@@ -30,6 +30,8 @@ public class LR35902 : Flags, IRegisters
         private static readonly object _syncRoot = new object();
         private static volatile LR35902 _instance;
 
+        private bool _isCpuRunning = false;
+
         // store registers values to these bytes.
         private byte _a, _b, _c, _d, _e, _f, _h, _l;
         private ushort _sp, _pc;
@@ -233,18 +235,9 @@ public static LR35902 Instance
             }
         }
 
-        public void Start()
+        public void EmulateCycle()
         {
-            var cpuIsRunning = true;
-            /*while(cpuIsRunning)
-            {
-                // Issue #32
-                // 
-                // Fetch instruction
-                // Dispatch
-                // Mask PC to 16 bits 
-                // Add time to CPU clock
-            }*/
+
         }
 
         public void Reset()

diff --git a/WinBoyEmulator/GameBoy/Emulator.cs b/WinBoyEmulator/GameBoy/Emulator.cs
@@ -17,6 +17,7 @@
 using System.IO;
 using System.Linq;
 using System.Text;
+using System.Threading;
 using System.Threading.Tasks;
 
 using WinBoyEmulator.GameBoy.CPU;
@@ -33,6 +34,7 @@ public class Emulator : IEmulator
         private static volatile Emulator _instance;
 
         private byte[] _game;
+        private bool _isGameBoyOn = false;
 
         public static Emulator Instance
         {
@@ -64,6 +66,19 @@ private void _readGameFile(string filename)
             {
                 var length = (int)reader.BaseStream.Length;
                 _game = reader.ReadBytes(length);
+                // Issue #29
+            }
+        }
+
+        private void _gameCycle()
+        {
+            while(_isGameBoyOn)
+            {
+                // Emulate one cycle
+                LR35902.Instance.EmulateCycle();
+
+                // If the draw flag is set, update the screen
+                // Store key press state (Press and Release)
             }
         }
 
@@ -79,7 +94,14 @@ public void StartEmulation(string gamePath)
             // Load game.
             _readGameFile(gamePath);
             MMU.Instance.Load(_game);
-            LR35902.Instance.Start();
+
+            var thread = new Thread(_gameCycle)
+            {
+                IsBackground = true,
+                Name  = "WinBoyEmulator",
+            };
+            thread.Start();
+
         }     
     }
 }