controls.h

/***********************************************************************************
  Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.

  (c) Copyright 1996 - 2002  Gary Henderson (gary.henderson@ntlworld.com),
                             Jerremy Koot (jkoot@snes9x.com)

  (c) Copyright 2002 - 2004  Matthew Kendora

  (c) Copyright 2002 - 2005  Peter Bortas (peter@bortas.org)

  (c) Copyright 2004 - 2005  Joel Yliluoma (http://iki.fi/bisqwit/)

  (c) Copyright 2001 - 2006  John Weidman (jweidman@slip.net)

  (c) Copyright 2002 - 2006  funkyass (funkyass@spam.shaw.ca),
                             Kris Bleakley (codeviolation@hotmail.com)

  (c) Copyright 2002 - 2010  Brad Jorsch (anomie@users.sourceforge.net),
                             Nach (n-a-c-h@users.sourceforge.net),

  (c) Copyright 2002 - 2011  zones (kasumitokoduck@yahoo.com)

  (c) Copyright 2006 - 2007  nitsuja

  (c) Copyright 2009 - 2016  BearOso,
                             OV2

  (c) Copyright 2011 - 2016  Hans-Kristian Arntzen,
                             Daniel De Matteis
                             (Under no circumstances will commercial rights be given)


  BS-X C emulator code
  (c) Copyright 2005 - 2006  Dreamer Nom,
                             zones

  C4 x86 assembler and some C emulation code
  (c) Copyright 2000 - 2003  _Demo_ (_demo_@zsnes.com),
                             Nach,
                             zsKnight (zsknight@zsnes.com)

  C4 C++ code
  (c) Copyright 2003 - 2006  Brad Jorsch,
                             Nach

  DSP-1 emulator code
  (c) Copyright 1998 - 2006  _Demo_,
                             Andreas Naive (andreasnaive@gmail.com),
                             Gary Henderson,
                             Ivar (ivar@snes9x.com),
                             John Weidman,
                             Kris Bleakley,
                             Matthew Kendora,
                             Nach,
                             neviksti (neviksti@hotmail.com)

  DSP-2 emulator code
  (c) Copyright 2003         John Weidman,
                             Kris Bleakley,
                             Lord Nightmare (lord_nightmare@users.sourceforge.net),
                             Matthew Kendora,
                             neviksti

  DSP-3 emulator code
  (c) Copyright 2003 - 2006  John Weidman,
                             Kris Bleakley,
                             Lancer,
                             z80 gaiden

  DSP-4 emulator code
  (c) Copyright 2004 - 2006  Dreamer Nom,
                             John Weidman,
                             Kris Bleakley,
                             Nach,
                             z80 gaiden

  OBC1 emulator code
  (c) Copyright 2001 - 2004  zsKnight,
                             pagefault (pagefault@zsnes.com),
                             Kris Bleakley
                             Ported from x86 assembler to C by sanmaiwashi

  SPC7110 and RTC C++ emulator code used in 1.39-1.51
  (c) Copyright 2002         Matthew Kendora with research by
                             zsKnight,
                             John Weidman,
                             Dark Force

  SPC7110 and RTC C++ emulator code used in 1.52+
  (c) Copyright 2009         byuu,
                             neviksti

  S-DD1 C emulator code
  (c) Copyright 2003         Brad Jorsch with research by
                             Andreas Naive,
                             John Weidman

  S-RTC C emulator code
  (c) Copyright 2001 - 2006  byuu,
                             John Weidman

  ST010 C++ emulator code
  (c) Copyright 2003         Feather,
                             John Weidman,
                             Kris Bleakley,
                             Matthew Kendora

  Super FX x86 assembler emulator code
  (c) Copyright 1998 - 2003  _Demo_,
                             pagefault,
                             zsKnight

  Super FX C emulator code
  (c) Copyright 1997 - 1999  Ivar,
                             Gary Henderson,
                             John Weidman

  Sound emulator code used in 1.5-1.51
  (c) Copyright 1998 - 2003  Brad Martin
  (c) Copyright 1998 - 2006  Charles Bilyue'

  Sound emulator code used in 1.52+
  (c) Copyright 2004 - 2007  Shay Green (gblargg@gmail.com)

  S-SMP emulator code used in 1.54+
  (c) Copyright 2016         byuu

  SH assembler code partly based on x86 assembler code
  (c) Copyright 2002 - 2004  Marcus Comstedt (marcus@mc.pp.se)

  2xSaI filter
  (c) Copyright 1999 - 2001  Derek Liauw Kie Fa

  HQ2x, HQ3x, HQ4x filters
  (c) Copyright 2003         Maxim Stepin (maxim@hiend3d.com)

  NTSC filter
  (c) Copyright 2006 - 2007  Shay Green

  GTK+ GUI code
  (c) Copyright 2004 - 2016  BearOso

  Win32 GUI code
  (c) Copyright 2003 - 2006  blip,
                             funkyass,
                             Matthew Kendora,
                             Nach,
                             nitsuja
  (c) Copyright 2009 - 2016  OV2

  Mac OS GUI code
  (c) Copyright 1998 - 2001  John Stiles
  (c) Copyright 2001 - 2011  zones

  Libretro port
  (c) Copyright 2011 - 2016  Hans-Kristian Arntzen,
                             Daniel De Matteis
                             (Under no circumstances will commercial rights be given)


  Specific ports contains the works of other authors. See headers in
  individual files.


  Snes9x homepage: http://www.snes9x.com/

  Permission to use, copy, modify and/or distribute Snes9x in both binary
  and source form, for non-commercial purposes, is hereby granted without
  fee, providing that this license information and copyright notice appear
  with all copies and any derived work.

  This software is provided 'as-is', without any express or implied
  warranty. In no event shall the authors be held liable for any damages
  arising from the use of this software or it's derivatives.

  Snes9x is freeware for PERSONAL USE only. Commercial users should
  seek permission of the copyright holders first. Commercial use includes,
  but is not limited to, charging money for Snes9x or software derived from
  Snes9x, including Snes9x or derivatives in commercial game bundles, and/or
  using Snes9x as a promotion for your commercial product.

  The copyright holders request that bug fixes and improvements to the code
  should be forwarded to them so everyone can benefit from the modifications
  in future versions.

  Super NES and Super Nintendo Entertainment System are trademarks of
  Nintendo Co., Limited and its subsidiary companies.
 ***********************************************************************************/


#ifndef _CONTROLS_H_
#define _CONTROLS_H_

#define S9xNoMapping			0
#define S9xButtonJoypad			1
#define S9xButtonMouse			2
#define S9xButtonSuperscope		3
#define S9xButtonJustifier		4
#define S9xButtonCommand		5
#define S9xButtonMulti			6
#define S9xAxisJoypad			7
#define S9xPointer				8

#define S9xButtonPseudopointer	254
#define S9xAxisPseudopointer	253
#define S9xAxisPseudobuttons	252

// These are automatically kicked out to the S9xHandlePortCommand function.
// If your port wants to define port-specific commands or whatever, use these values for the s9xcommand_t type field.

#define S9xButtonPort			251
#define S9xAxisPort				250
#define S9xPointerPort			249

#define S9xBadMapping			255
#define InvalidControlID		((uint32) -1)

// S9xButtonPseudopointer and S9xAxisPseudopointer will report pointer motion using IDs PseudoPointerBase through PseudoPointerBase+7.
// S9xAxisPseudopointer command types. S9xAxisPseudobuttons will report buttons with IDs PseudoButtonBase to PseudoButtonBase+255.

#define PseudoPointerBase		(InvalidControlID - 8)
#define PseudoButtonBase		(PseudoPointerBase - 256)

typedef struct
{
	uint8	type;
	uint8	multi_press:2;
	uint8	button_norpt:1;

	union
	{
		union
		{
			struct
			{
				uint8	idx:3;				// Pad number 0-7
				uint8	toggle:1;			// If set, toggle turbo/sticky for the button
				uint8	turbo:1;			// If set, be a 'turbo' button
				uint8	sticky:1;			// If set, toggle button state (on/turbo or off) when pressed and do nothing on release
				uint16	buttons;			// Which buttons to actuate. Use SNES_*_MASK constants from snes9x.h
			}	joypad;

			struct
			{
				uint8	idx:1;				// Mouse number 0-1
				uint8	left:1;				// buttons
				uint8	right:1;
			}	mouse;

			struct
			{
				uint8	fire:1;
				uint8	cursor:1;
				uint8	turbo:1;
				uint8	pause:1;
				uint8	aim_offscreen:1;	// Pretend we're pointing the gun offscreen (ignore the pointer)
			}	scope;

			struct
			{
				uint8	idx:3;				// Pseudo-pointer number 0-7
				uint8	speed_type:2;		// 0=variable, 1=slow, 2=med, 3=fast
				int8	UD:2;				// -1=up, 1=down, 0=no vertical motion
				int8	LR:2;				// -1=left, 1=right, 0=no horizontal motion
			}	pointer;

			struct
			{
				uint8	idx:1;				// Justifier number 0-1
				uint8	trigger:1;			// buttons
				uint8	start:1;
				uint8	aim_offscreen:1;	// Pretend we're pointing the gun offscreen (ignore the pointer)
			}	justifier;

			int32	multi_idx;
			uint16	command;
		}	button;

		union
		{
			struct
			{
				uint8	idx:3;				// Pad number 0-7
				uint8	invert:1;			// 1 = positive is Left/Up/Y/X/L
				uint8	axis:3;				// 0=Left/Right, 1=Up/Down, 2=Y/A, 3=X/B, 4=L/R
				uint8	threshold;			// (threshold+1)/256% deflection is a button press
			}	joypad;

			struct
			{
				uint8	idx:3;				// Pseudo-pointer number 0-7
				uint8	speed_type:2;		// 0=variable, 1=slow, 2=med, 3=fast
				uint8	invert:1;			// 1 = invert axis, so positive is up/left
				uint8	HV:1;				// 0=horizontal, 1=vertical
			}	pointer;

			struct
			{
				uint8	threshold;			// (threshold+1)/256% deflection is a button press
				uint8	negbutton;			// Button ID for negative deflection
				uint8	posbutton;			// Button ID for positive deflection
			}	button;
		}	axis;

		struct								// Which SNES-pointers to control with this pointer
		{
			uint16	aim_mouse0:1;
			uint16	aim_mouse1:1;
			uint16	aim_scope:1;
			uint16	aim_justifier0:1;
			uint16	aim_justifier1:1;
		}	pointer;

		uint8	port[4];
	};
}	s9xcommand_t;

// Starting out...

void S9xUnmapAllControls (void);

// Setting which controllers are plugged in.

enum controllers
{
	CTL_NONE,		// all ids ignored
	CTL_JOYPAD,		// use id1 to specify 0-7
	CTL_MOUSE,		// use id1 to specify 0-1
	CTL_SUPERSCOPE,
	CTL_JUSTIFIER,	// use id1: 0=one justifier, 1=two justifiers
	CTL_MP5			// use id1-id4 to specify pad 0-7 (or -1)
};

void S9xSetController (int port, enum controllers controller, int8 id1, int8 id2, int8 id3, int8 id4); // port=0-1
void S9xGetController (int port, enum controllers *controller, int8 *id1, int8 *id2, int8 *id3, int8 *id4);
void S9xReportControllers (void);

// Call this when you're done with S9xSetController, or if you change any of the controller Settings.*Master flags. 
// Returns true if something was disabled.

bool S9xVerifyControllers (void);

// Functions for translation s9xcommand_t's into strings, and vice versa.
// free() the returned string after you're done with it.

char * S9xGetCommandName (s9xcommand_t command);
s9xcommand_t S9xGetCommandT (const char *name);

// Returns an array of strings naming all the snes9x commands.
// Note that this is only the strings for S9xButtonCommand!
// The idea is that this would be used for a pull-down list in a config GUI. DO NOT free() the returned value.

const char ** S9xGetAllSnes9xCommands (void);

// Generic mapping functions

s9xcommand_t S9xGetMapping (uint32 id);
void S9xUnmapID (uint32 id);

// Button mapping functions.
// If a button is mapped with poll=TRUE, then S9xPollButton will be called whenever snes9x feels a need for that mapping.
// Otherwise, snes9x will assume you will call S9xReportButton() whenever the button state changes.
// S9xMapButton() will fail and return FALSE if mapping.type isn't an S9xButton* type.

bool S9xMapButton (uint32 id, s9xcommand_t mapping, bool poll);
void S9xReportButton (uint32 id, bool pressed);

// Pointer mapping functions.
// If a pointer is mapped with poll=TRUE, then S9xPollPointer will be called whenever snes9x feels a need for that mapping.
// Otherwise, snes9x will assume you will call S9xReportPointer() whenever the pointer position changes.
// S9xMapPointer() will fail and return FALSE if mapping.type isn't an S9xPointer* type.

// Note that position [0,0] is considered the upper-left corner of the 'screen',
// and either [255,223] or [255,239] is the lower-right.
// Note that the SNES mouse doesn't aim at a particular point,
// so the SNES's idea of where the mouse pointer is will probably differ from your OS's idea.

bool S9xMapPointer (uint32 id, s9xcommand_t mapping, bool poll);
void S9xReportPointer (uint32 id, int16 x, int16 y);

// Axis mapping functions.
// If an axis is mapped with poll=TRUE, then S9xPollAxis will be called whenever snes9x feels a need for that mapping.
// Otherwise, snes9x will assume you will call S9xReportAxis() whenever the axis deflection changes.
// S9xMapAxis() will fail and return FALSE if mapping.type isn't an S9xAxis* type.

// Note that value is linear -32767 through 32767 with 0 being no deflection.
// If your axis reports differently you should transform the value before passing it to S9xReportAxis().

bool S9xMapAxis (uint32 id, s9xcommand_t mapping, bool poll);
void S9xReportAxis (uint32 id, int16 value);

// Do whatever the s9xcommand_t says to do.
// If cmd.type is a button type, data1 should be TRUE (non-0) or FALSE (0) to indicate whether the 'button' is pressed or released.
// If cmd.type is an axis, data1 holds the deflection value.
// If cmd.type is a pointer, data1 and data2 are the positions of the pointer.

void S9xApplyCommand (s9xcommand_t cmd, int16 data1, int16 data2);

//////////
// These functions are called by snes9x into your port, so each port should implement them.

// If something was mapped with poll=TRUE, these functions will be called when snes9x needs the button/axis/pointer state.
// Fill in the reference options as appropriate.

bool S9xPollButton (uint32 id, bool *pressed);
bool S9xPollPointer (uint32 id, int16 *x, int16 *y);
bool S9xPollAxis (uint32 id, int16 *value);

// These are called when snes9x tries to apply a command with a S9x*Port type.
// data1 and data2 are filled in like S9xApplyCommand.

void S9xHandlePortCommand (s9xcommand_t cmd, int16 data1, int16 data2);

// Called before already-read SNES joypad data is being used by the game if your port defines SNES_JOY_READ_CALLBACKS.

#ifdef SNES_JOY_READ_CALLBACKS
void S9xOnSNESPadRead (void);
#endif

// These are for your use.

s9xcommand_t S9xGetPortCommandT (const char *name);
char * S9xGetPortCommandName (s9xcommand_t command);
void S9xSetupDefaultKeymap (void);
bool8 S9xMapInput (const char *name, s9xcommand_t *cmd);

//////////
// These functions are called from snes9x into this subsystem. No need to use them from a port.

// Use when resetting snes9x.

void S9xControlsReset (void);
void S9xControlsSoftReset (void);

// Use when writing to $4016.

void S9xSetJoypadLatch (bool latch);

// Use when reading $4016/7 (JOYSER0 and JOYSER1).

uint8 S9xReadJOYSERn (int n);

// End-Of-Frame processing. Sets gun latch variables and tries to draw crosshairs

void S9xControlEOF (void);

// Functions and a structure for snapshot.

struct SControlSnapshot
{
	uint8	ver;
	uint8	port1_read_idx[2];
	uint8	dummy1[4];					// for future expansion
	uint8	port2_read_idx[2];
	uint8	dummy2[4];
	uint8	mouse_speed[2];
	uint8	justifier_select;
	uint8	dummy3[8];
	bool8	pad_read, pad_read_last;
	uint8	internal[60];				// yes, we need to save this!
};

void S9xControlPreSaveState (struct SControlSnapshot *s);
void S9xControlPostLoadState (struct SControlSnapshot *s);

#endif