//===========================================================================//
// File:    l4joy.h                                                          //
// Project: MUNGA           Brick: generic joystick reader                   //
// Contents: DirectInput 8 sticks, HOTAS throttles and pedals                //
//---------------------------------------------------------------------------//
// Copyright (C) 1994-1995, Virtual World Entertainment, Inc.                //
//                      PROPRIETARY AND CONFIDENTIAL                         //
//===========================================================================//

#pragma once

//########################################################################
//
// L4JOY - the generic-joystick reader.
//
// PadRIO reads XInput, which covers Xbox-class pads and nothing else.
// This layer adds every OTHER game device Windows knows - flight sticks,
// HOTAS throttles, twist grips, rudder pedals, wheels - through
// DirectInput 8, the standard generic-HID game API. It exposes up to
// joyMaxDevices attached devices as normalized state blocks; the PadRIO
// poll maps them onto the pod's control channels through the joydev /
// joyaxis / joybutton / joyhat rows of bindings.txt (L4PADBINDINGS.h),
// the same binding machinery the pad and keyboard already use.
//
// XInput-class devices are EXCLUDED here, or they would double-feed
// through both APIs and every input would count twice. A DirectInput
// device whose VID/PID also appears in a RawInput device path containing
// the "IG_" marker is an XInput device - the documented detection that
// does not drag in WMI.
//
// This is distinct from the legacy L4DINPUT.cpp DIJoystick, the 1995-era
// single-device `Joystick` engine interface reachable only through the
// old L4CONTROLS=DIJOYSTICK profile. That path is untouched.
//
// RP412JOYCONFIG=1 runs the interactive setup wizard at boot: it asks
// the player to move each control, works out which device and axis moved
// and which way, and writes the joystick section of bindings.txt.
// RP412JOYLOG=1 logs device attach/detach.
//
// Ported from BT411, whose glass cockpit needed the same thing.
//
//########################################################################

enum
{
	joyMaxDevices  = 4,
	joyAxisCount   = 8,		// X Y Z RX RY RZ SL0 SL1 (DIJOYSTATE2 order)
	joyButtonCount = 32,	// buttons exposed to bindings (DI carries 128)
	joyHatCount    = 4
};

struct RPJoyDeviceState
{
	int			attached;
	float		axis[joyAxisCount];		// normalized -1..1, raw: deadzones
										// are the binding layer's business
	unsigned	buttons;				// bit n = button n held
	int			hat[joyHatCount];		// POV in centidegrees, -1 = centered
	char		name[64];				// product name ("T.16000M", ...)
};

//
// Lifecycle. Init is lazy-safe (Poll calls it) and returns the attached
// non-XInput device count. Re-enumeration for hot-plug happens inside
// Poll on a ~3 s cadence whenever nothing is attached.
//
int  RPJoyInit(void);
void RPJoyShutdown(void);
void RPJoyPoll(void);

int  RPJoyDeviceCount(void);
const RPJoyDeviceState *RPJoyDevice(int index);	// NULL out of range/detached

//
// Case-insensitive product-name substring match to a device index, -1 for
// no match. This is what a named joydev slot resolves through.
//
int  RPJoyFindDevice(const char *name_substring);

//
// The RP412JOYCONFIG capture wizard (console UI; called from RPL4.CPP
// before the front end). Returns 0 if it wrote a config, non-zero on
// abort or no device.
//
int  RPJoyConfigWizard(void);