Undo Daxter's rotation of the analog input. See #17015

I think this is quite a bit better actually. Appears to be exactly 15 degrees.

Core/Compatibility.cpp

@@ -127,6 +127,7 @@ void Compatibility::CheckSettings(IniFile &iniFile, const std::string &gameID) {
 	CheckSetting(iniFile, gameID, "RockmanDash2SoundFix", &flags_.RockmanDash2SoundFix);
 	CheckSetting(iniFile, gameID, "ReadbackDepth", &flags_.ReadbackDepth);
 	CheckSetting(iniFile, gameID, "BlockTransferDepth", &flags_.BlockTransferDepth);
+	CheckSetting(iniFile, gameID, "DaxterRotatedAnalogStick", &flags_.DaxterRotatedAnalogStick);
 }
 
 void Compatibility::CheckVRSettings(IniFile &iniFile, const std::string &gameID) {

Core/Compatibility.h

@@ -98,6 +98,7 @@ struct CompatFlags {
 	bool RockmanDash2SoundFix;
 	bool ReadbackDepth;
 	bool BlockTransferDepth;
+	bool DaxterRotatedAnalogStick;
 };
 
 struct VRCompat {

Core/HLE/sceCtrl.cpp

@@ -20,6 +20,7 @@
 
 #include "Common/Serialize/Serializer.h"
 #include "Common/Serialize/SerializeFuncs.h"
+#include "Common/Math/math_util.h"
 #include "Core/CoreTiming.h"
 #include "Core/HLE/HLE.h"
 #include "Core/HLE/FunctionWrappers.h"
@@ -28,6 +29,7 @@
 #include "Core/HLE/sceKernelThread.h"
 #include "Core/HLE/sceKernelInterrupt.h"
 #include "Core/HW/Display.h"
+#include "Core/System.h"
 #include "Core/MemMapHelpers.h"
 #include "Core/MIPS/MIPS.h"
 #include "Core/Replay.h"
@@ -118,6 +120,20 @@ static void __CtrlUpdateLatch()
 
 	// Copy in the current data to the current buffer.
 	ctrlBufs[ctrlBuf] = ctrlCurrent;
+
+	if (PSP_CoreParameter().compat.flags().DaxterRotatedAnalogStick) {
+		// For some reason, Daxter rotates the analog input. See #17015
+		float angle = (15.0f / 360.0f) * (2.0f * M_PI);
+		float cosAngle = cosf(angle);
+		float sinAngle = sinf(angle);
+		float x = ctrlBufs[ctrlBuf].analog[0][0] - 128;
+		float y = ctrlBufs[ctrlBuf].analog[0][1] - 128;
+		float rX = x * cosAngle - y * sinAngle;
+		float rY = x * sinAngle + y * cosAngle;
+		ctrlBufs[ctrlBuf].analog[0][0] = (u8)Clamp(rX + 128, 0.0f, 255.0f);
+		ctrlBufs[ctrlBuf].analog[0][1] = (u8)Clamp(rY + 128, 0.0f, 255.0f);
+	}
+
 	ctrlBufs[ctrlBuf].buttons = buttons;
 
 	u32 changed = buttons ^ ctrlOldButtons;

assets/compat.ini

@@ -1479,3 +1479,10 @@ NPEG00004 = true
 ULES01070 = true
 ULES01071 = true
 ULUS10347 = true
+
+[DaxterRotatedAnalogStick]
+# Daxter (see issue #17015)
+UCUS98618 = true
+UCES00044 = true
+NPUG80329 = true
+NPEG00025 = true