Support for SNES mouse, added "Subor" to description of existing mouse

trunk/attic/cmake-stuff/cmake/fceux.cmake

@@ -142,6 +142,7 @@ set(SRC_CORE
   ${CMAKE_SOURCE_DIR}/src/input/hypershot.cpp
   ${CMAKE_SOURCE_DIR}/src/input/mahjong.cpp
   ${CMAKE_SOURCE_DIR}/src/input/mouse.cpp
+  ${CMAKE_SOURCE_DIR}/src/input/snesmouse.cpp
   ${CMAKE_SOURCE_DIR}/src/input/oekakids.cpp
   ${CMAKE_SOURCE_DIR}/src/input/powerpad.cpp
   ${CMAKE_SOURCE_DIR}/src/input/quiz.cpp

trunk/src/drivers/win/input.cpp

@@ -432,6 +432,7 @@ void FCEUD_UpdateInput()
 				UpdateGamepad(true);
 				break;
 			case SI_MOUSE: mouse=true; break;
+			case SI_SNES_MOUSE: mouse=true; break;
 			case SI_ARKANOID: mouse=true; break;
 			case SI_ZAPPER: mouse=true; break;
 			case SI_POWERPADA:
@@ -519,6 +520,9 @@ void InitInputPorts(bool fourscore)
 			case SI_MOUSE:
 				InputDPtr=MouseData;
 				break;
+			case SI_SNES_MOUSE:
+				InputDPtr=MouseData;
+				break;
 			case SI_SNES:
 				InputDPtr=snespad_return;
 				break;

trunk/src/git.h

@@ -37,8 +37,9 @@ enum ESI
 	SI_ARKANOID		= 5,
 	SI_MOUSE		= 6,
 	SI_SNES			= 7,
+	SI_SNES_MOUSE	= 8,
 
-	SI_COUNT = SI_SNES
+	SI_COUNT = SI_SNES_MOUSE
 };
 
 inline const char* ESI_Name(ESI esi)
@@ -51,8 +52,9 @@ inline const char* ESI_Name(ESI esi)
 		"Power Pad A",
 		"Power Pad B",
 		"Arkanoid Paddle",
-		"Mouse",
-		"SNES Pad"
+		"Subor Mouse",
+		"SNES Pad",
+		"SNES Mouse"
 	};
 
 	if(esi >= SI_NONE && esi <= SI_COUNT)

trunk/src/input.cpp

@@ -63,6 +63,7 @@ extern INPUTC *FCEU_InitPowerpadA(int w);
 extern INPUTC *FCEU_InitPowerpadB(int w);
 extern INPUTC *FCEU_InitArkanoid(int w);
 extern INPUTC *FCEU_InitMouse(int w);
+extern INPUTC *FCEU_InitSNESMouse(int w);
 
 extern INPUTCFC *FCEU_InitArkanoidFC(void);
 extern INPUTCFC *FCEU_InitSpaceShadow(void);
@@ -474,6 +475,9 @@ static void SetInputStuff(int port)
 	case SI_MOUSE:
 		joyports[port].driver=FCEU_InitMouse(port);
 		break;
+	case SI_SNES_MOUSE:
+		joyports[port].driver=FCEU_InitSNESMouse(port);
+		break;
 	case SI_NONE:
 		joyports[port].driver=&DummyJPort;
 		break;

trunk/src/input/snesmouse.cpp

@@ -0,0 +1,116 @@
+/* FCE Ultra - NES/Famicom Emulator
+ *
+ * Copyright notice for this file:
+ *  Copyright (C) 2002 Xodnizel
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <string.h>
+#include <stdlib.h>
+#include "share.h"
+
+typedef struct {
+	bool strobe;
+	uint32 latch; // latched data (read when strobe goes high to low)
+	uint32 sensitivity; // reading while strobe is high cycles sensitivity 0,1,2
+	int32 mx, my; // current screen location
+	int32 lmx, lmy; // last latched location
+	uint32 mb; // current buttons
+} SNES_MOUSE;
+
+static SNES_MOUSE SNESMouse;
+
+static uint8 ReadSNESMouse(int w)
+{
+	if (SNESMouse.strobe)
+	{
+		SNESMouse.sensitivity += 1;
+		if (SNESMouse.sensitivity > 2) SNESMouse.sensitivity = 0;
+	}
+
+	uint8 result = (SNESMouse.latch & 0x80000000) >> 31;
+	SNESMouse.latch = (SNESMouse.latch << 1);
+
+	return result;
+}
+
+static void WriteSNESMouse(uint8 v)
+{
+	bool strobing = v & 1;
+
+	if (SNESMouse.strobe && !strobing)
+	{
+		int dx = SNESMouse.mx - SNESMouse.lmx;
+		int dy = SNESMouse.my - SNESMouse.lmy;
+
+		SNESMouse.lmx = SNESMouse.mx;
+		SNESMouse.lmy = SNESMouse.my;
+
+		// convert to sign and magnitude
+		bool sx = (dx < 0);
+		bool sy = (dy < 0);
+		if (dx < 0) dx = -dx;
+		if (dy < 0) dy = -dy;
+
+		// apply sensitivity
+		dx += dx >> (2 - SNESMouse.sensitivity);
+		dx += dx >> (2 - SNESMouse.sensitivity);
+
+		// clamp
+		if (dx > 127) dx = 127;
+		if (dy > 127) dy = 127;
+
+		//FCEU_printf("SNES Mouse: %1d %3d, %1d %3d %1d x%1d\n",sx,dx,sy,dy,SNESMouse.mb,SNESMouse.sensitivity);
+
+		uint8 byte0 = 0x00;
+		uint8 byte1 =
+			0x1 | // signature
+			((SNESMouse.sensitivity & 3) << 4) | // sensitivity
+			((SNESMouse.mb & 3) << 6); // buttons
+		uint8 byte2 = uint8(dy) | (sy ? 0x80 : 0x00);
+		uint8 byte3 = uint8(dx) | (sx ? 0x80 : 0x00);
+
+		SNESMouse.latch = (byte0 << 24) | (byte1 << 16) | (byte2 << 8) | (byte3 << 0);
+	}
+
+	SNESMouse.strobe = strobing;
+}
+
+static void UpdateSNESMouse(int w, void *data, int arg)
+{
+	uint32 *ptr=(uint32*)data;
+	SNESMouse.mx = ptr[0]; // screen position
+	SNESMouse.my = ptr[1];
+	SNESMouse.mb = ptr[2] & 3; // bit 0 = left button, bit 1 = right button
+}
+
+static INPUTC SNES_MOUSEC =
+{
+	ReadSNESMouse, // Read
+	WriteSNESMouse, // Write
+	0, // Strobe (handled by Write)
+	UpdateSNESMouse, // Update
+	0, // SLHook
+	0, // Draw
+	0, // Log
+	0, // Load
+};
+
+INPUTC *FCEU_InitSNESMouse(int w)
+{
+	memset(&SNESMouse,0,sizeof(SNESMouse));
+	return(&SNES_MOUSEC);
+}

trunk/vc/vc10_fceux.vcxproj

@@ -540,6 +540,7 @@
     <ClCompile Include="..\src\input\hypershot.cpp" />
     <ClCompile Include="..\src\input\mahjong.cpp" />
     <ClCompile Include="..\src\input\mouse.cpp" />
+    <ClCompile Include="..\src\input\snesmouse.cpp" />
     <ClCompile Include="..\src\input\oekakids.cpp" />
     <ClCompile Include="..\src\input\pec586kb.cpp" />
     <ClCompile Include="..\src\input\powerpad.cpp" />

trunk/vc/vc10_fceux.vcxproj.filters

@@ -520,6 +520,9 @@
     <ClCompile Include="..\src\input\mouse.cpp">
       <Filter>input</Filter>
     </ClCompile>
+    <ClCompile Include="..\src\input\snesmouse.cpp">
+      <Filter>input</Filter>
+    </ClCompile>
     <ClCompile Include="..\src\input\oekakids.cpp">
       <Filter>input</Filter>
     </ClCompile>