1 files changed, 26 insertions, 0 deletions
diff --git a/src/Ryujinx.HLE/HOS/Tamper/CodeEmitters/KeyPressConditional.cs b/src/Ryujinx.HLE/HOS/Tamper/CodeEmitters/KeyPressConditional.cs
new file mode 100644
index 00000000..a1758665
--- /dev/null
+++ b/src/Ryujinx.HLE/HOS/Tamper/CodeEmitters/KeyPressConditional.cs
@@ -0,0 +1,26 @@
+using Ryujinx.HLE.HOS.Tamper.Conditions;
+
+namespace Ryujinx.HLE.HOS.Tamper.CodeEmitters
+{
+    /// <summary>
+    /// Code type 8 enters or skips a conditional block based on whether a key combination is pressed.
+    /// </summary>
+    class KeyPressConditional
+    {
+        private const int InputMaskIndex = 1;
+
+        private const int InputMaskSize = 7;
+
+        public static ICondition Emit(byte[] instruction, CompilationContext context)
+        {
+            // 8kkkkkkk
+            // k: Keypad mask to check against, see below.
+            // Note that for multiple button combinations, the bitmasks should be ORd together.
+            // The Keypad Values are the direct output of hidKeysDown().
+
+            ulong inputMask = InstructionHelper.GetImmediate(instruction, InputMaskIndex, InputMaskSize);
+
+            return new InputMask((long)inputMask, context.PressedKeys);
+        }
+    }
+}