Fix slowlook on reset

spelunky-fyi · Apr 28, 2024 · 89ec2ae · 89ec2ae
1 parent b1db0fd
commit 89ec2ae
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Showing 3 changed files with 42 additions and 3 deletions.
diff --git a/AchievementsTracker/AchievementsTracker/GameManager.cs b/AchievementsTracker/AchievementsTracker/GameManager.cs
@@ -5,7 +5,7 @@ namespace AchievementsTracker
     class GameManager
     {
         private Tracker tracker;
-        private MemoryReader memoryReader;
+        public MemoryReader memoryReader;
 
         private ScreenState state;
         private int charSelect;

diff --git a/AchievementsTracker/AchievementsTracker/MemoryReader.cs b/AchievementsTracker/AchievementsTracker/MemoryReader.cs
@@ -8,6 +8,9 @@ class MemoryReader
         [DllImport("kernel32.dll")]
         public static extern bool ReadProcessMemory(int hProcess, int lpBaseAddress, byte[] lpBuffer, int dwSize, ref int lpNumberOfBytesRead);
 
+        [DllImport("kernel32.dll")]
+        public static extern bool WriteProcessMemory(int hProcess, int lpBaseAddress, byte[] lpBuffer, int nSize, ref int lpNumberOfBytesWrittent);
+
         private int[] SCREEN_STATE = { 0x15446C, 0x58 };
         private int[] PLAYER_ONE_HEALTH = { 0x15446C, 0x440694 };
         private int[] PLAYER_TWO_HEALTH = { 0x15446C, 0x441B38 };
@@ -29,6 +32,8 @@ class MemoryReader
         private int[] TUNNEL_REMAINING = { 0x15446C, 0x445BE8 };
         private int[] TUTORIAL_STATUS = { 0x15446C, 0x445BE0 };
 
+        private int[] CAMERA_SPEED = { 0x154510, 0x38 };
+
         private int processHandle;
         private int baseAddress;
 
@@ -38,6 +43,12 @@ public MemoryReader(int processHandle, int baseAddress)
             this.baseAddress = baseAddress;
         }
 
+        public void FixSlowLook()
+        {
+            byte[] buffer = BitConverter.GetBytes(1.0f);
+            WriteMemory(buffer, baseAddress, CAMERA_SPEED);
+        }
+
         public int ReadTutorialStatus()
         {
             byte[] buffer = new byte[1];
@@ -203,5 +214,27 @@ private byte[] ReadMemory(byte[] buffer, int addr, int[] offsets)
 
             return buffer;
         }
+
+        private bool WriteMemory(byte[] buffer, int addr, int[] offsets)
+        {
+            int bytesRead = 0;
+            int bytesWritten = 0;
+
+            // Buffer for next pointer
+            byte[] pointer = new byte[4];
+
+            // Traverse pointer path
+            for (int i = 0; i < offsets.Length - 1; i++)
+            {
+                addr += offsets[i];
+                ReadProcessMemory(processHandle, addr, pointer, pointer.Length, ref bytesRead);
+                addr = BitConverter.ToInt32(pointer, 0);
+            }
+
+            // Read value from final address
+            addr += offsets[offsets.Length - 1];
+
+            return WriteProcessMemory(processHandle, addr, buffer, buffer.Length, ref bytesWritten);
+        }
     }
 }
diff --git a/AchievementsTracker/AchievementsTracker/Tracker.cs b/AchievementsTracker/AchievementsTracker/Tracker.cs
@@ -13,7 +13,9 @@ namespace AchievementsTracker
 {
     class Tracker
     {
-        private const int PROCESS_WM_READ = 0x0010;
+        private const int PROCESS_VM_OPERATION = 0x0008;
+        private const int PROCESS_VM_READ = 0x0010;
+        private const int PROCESS_VM_WRITE = 0x0020;
 
         private const int DAY_IN_MS = 1000 * 60 * 60 * 24;
 
@@ -56,6 +58,10 @@ public void SetMultiplayerRoom(string roomCode, bool host)
         public void Reset()
         {
             roomCode = null;
+            if (gameManager != null)
+            {
+                gameManager.memoryReader.FixSlowLook();
+            }
 
             lock (_runManagerLock)
             {
@@ -524,7 +530,7 @@ public void Main()
                 });
 
                 Log.WriteLine("Spelunky process detected");
-                processHandle = (int)OpenProcess(PROCESS_WM_READ, false, spelunky.Id);
+                processHandle = (int)OpenProcess(PROCESS_VM_READ | PROCESS_VM_WRITE | PROCESS_VM_OPERATION, false, spelunky.Id);
                 baseAddress = spelunky.MainModule.BaseAddress.ToInt32();
             }
             catch (Exception e)