/*
===========================================================================
Copyright (C) 1999-2005 Id Software, Inc.

This file is part of Quake III Arena source code.

Quake III Arena source code 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.

Quake III Arena source code 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 Quake III Arena source code; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
===========================================================================
*/
// cl.input.c  -- builds an intended movement command to send to the server

#include "client.h"
#include "client_help.h"


static char LastKeyTooHigh[K_LAST_KEY < 256 ? 1 : -1];


static cvar_t* m_speed;
static cvar_t* m_accel;
static cvar_t* m_accelStyle;	// 0=original, 1=new
static cvar_t* m_accelOffset;	// for style 1 only
static cvar_t* m_limit;			// for style 0 only
static cvar_t* m_pitch;
static cvar_t* m_yaw;
static cvar_t* m_forward;
static cvar_t* m_side;
static cvar_t* m_filter;

static cvar_t* cl_pitchspeed;
static cvar_t* cl_yawspeed;
static cvar_t* cl_run;
static cvar_t* cl_anglespeedkey;
static cvar_t* cl_freelook;

static cvar_t* cl_nodelta;
static cvar_t* cl_showMouseRate;

static unsigned frame_msec;
static int old_com_frameTime;


/*
===============================================================================

KEY BUTTONS

Continuous button event tracking is complicated by the fact that two different
input sources (say, mouse button 1 and the control key) can both press the
same button, but the button should only be released when both of the
pressing key have been released.

When a key event issues a button command (+forward, +attack, etc), it appends
its key number as argv(1) so it can be matched up with the release.

argv(2) will be set to the time the event happened, which allows exact
control even at low framerates when the down and up events may both get qued
at the same time.

===============================================================================
*/


typedef struct {
	int			down[2];		// key nums holding it down
	unsigned	downtime;		// msec timestamp
	unsigned	msec;			// msec down this frame if both a down and up happened
	qbool		active;			// current state
	qbool		wasPressed;		// set when down, not cleared when up
} kbutton_t;


static kbutton_t	in_left, in_right, in_forward, in_back;
static kbutton_t	in_lookup, in_lookdown, in_moveleft, in_moveright;
static kbutton_t	in_strafe, in_speed;
static kbutton_t	in_up, in_down;
static kbutton_t	in_buttons[16];


static qbool in_mlooking;

static void IN_MLookDown()
{
	in_mlooking = qtrue;
}

static void IN_MLookUp()
{
	in_mlooking = qfalse;
	if ( !cl_freelook->integer ) {
		cl.viewangles[PITCH] = -SHORT2ANGLE(cl.snap.ps.delta_angles[PITCH]);
	}
}


static void IN_KeyDown( kbutton_t *b )
{
	const char* c = Cmd_Argv(1);
	int k = (c[0] ? atoi(c) : -1); // -1 == typed manually at the console for continuous down

	if ( k == b->down[0] || k == b->down[1] ) {
		return;		// repeating key
	}

	if ( !b->down[0] ) {
		b->down[0] = k;
	} else if ( !b->down[1] ) {
		b->down[1] = k;
	} else {
		Com_Printf ("Three keys down for a button!\n");
		return;
	}

	if ( b->active ) {
		return;		// still down
	}

	// save timestamp for partial frame summing
	c = Cmd_Argv(2);
	b->downtime = atoi(c);

	b->active = qtrue;
	b->wasPressed = qtrue;
}

static void IN_KeyUp( kbutton_t *b )
{
	int k;
	const char* c = Cmd_Argv(1);

	if ( c[0] ) {
		k = atoi(c);
	} else {
		// typed manually at the console, assume for unsticking, so clear all
		b->down[0] = b->down[1] = 0;
		b->active = qfalse;
		return;
	}

	if ( b->down[0] == k ) {
		b->down[0] = 0;
	} else if ( b->down[1] == k ) {
		b->down[1] = 0;
	} else {
		return;		// key up without coresponding down (menu pass through)
	}
	if ( b->down[0] || b->down[1] ) {
		return;		// some other key is still holding it down
	}

	b->active = qfalse;

	// save timestamp for partial frame summing
	c = Cmd_Argv(2);
	unsigned uptime = atoi(c);
	if ( uptime ) {
		b->msec += uptime - b->downtime;
	} else {
		b->msec += frame_msec / 2;
	}

	b->active = qfalse;
}


// returns the fraction of the frame that the key was down

static float CL_KeyState( kbutton_t *key )
{
	int msec = key->msec;
	key->msec = 0;

	if ( key->active ) {
		// still down
		if ( !key->downtime ) {
			msec = com_frameTime;
		} else {
			msec += com_frameTime - key->downtime;
		}
		key->downtime = com_frameTime;
	}

#if 0
	if (msec) {
		Com_Printf ("%i ", msec);
	}
#endif

	float val = (float)msec / frame_msec;
	if ( val < 0 ) {
		val = 0;
	}
	if ( val > 1 ) {
		val = 1;
	}

	return val;
}


///////////////////////////////////////////////////////////////


static signed char ClampChar( int i )
{
	if ( i < -128 ) {
		return -128;
	}
	if ( i > 127 ) {
		return 127;
	}
	return i;
}


// moves the local angle positions

static void CL_AdjustAngles()
{
	float	speed;

	if ( in_speed.active ) {
		speed = ((float)cls.frametime / 1000.0f) * cl_anglespeedkey->value;
	} else {
		speed = (float)cls.frametime / 1000.0f;
	}

	if ( !in_strafe.active ) {
		cl.viewangles[YAW] -= speed*cl_yawspeed->value*CL_KeyState (&in_right);
		cl.viewangles[YAW] += speed*cl_yawspeed->value*CL_KeyState (&in_left);
	}

	cl.viewangles[PITCH] -= speed*cl_pitchspeed->value * CL_KeyState (&in_lookup);
	cl.viewangles[PITCH] += speed*cl_pitchspeed->value * CL_KeyState (&in_lookdown);
}


// sets the usercmd_t based on key states

static void CL_KeyMove( usercmd_t *cmd )
{
	int		movespeed;
	int		forward, side, up;

	//
	// adjust for speed key / running
	// the walking flag is to keep animations consistant
	// even during acceleration and develeration
	//
	if ( in_speed.active ^ !!cl_run->integer ) {
		movespeed = 127;
		cmd->buttons &= ~BUTTON_WALKING;
	} else {
		cmd->buttons |= BUTTON_WALKING;
		movespeed = 64;
	}

	forward = 0;
	side = 0;
	up = 0;
	if ( in_strafe.active ) {
		side += movespeed * CL_KeyState (&in_right);
		side -= movespeed * CL_KeyState (&in_left);
	}

	side += movespeed * CL_KeyState (&in_moveright);
	side -= movespeed * CL_KeyState (&in_moveleft);

	up += movespeed * CL_KeyState (&in_up);
	up -= movespeed * CL_KeyState (&in_down);

	forward += movespeed * CL_KeyState (&in_forward);
	forward -= movespeed * CL_KeyState (&in_back);

	cmd->forwardmove = ClampChar( forward );
	cmd->rightmove = ClampChar( side );
	cmd->upmove = ClampChar( up );
}


void CL_MouseEvent( int dx, int dy, int time )
{
	if ( cls.keyCatchers & KEYCATCH_UI ) {
		VM_Call( uivm, UI_MOUSE_EVENT, dx, dy );
	} else if (cls.keyCatchers & KEYCATCH_CGAME) {
		VM_Call( cgvm, CG_MOUSE_EVENT, dx, dy );
	} else {
		if ( cgvm && (cls.cgameForwardInput & 1) )
			VM_Call( cgvm, CG_MOUSE_EVENT, dx, dy );
		cl.mouseDx[cl.mouseIndex] += dx;
		cl.mouseDy[cl.mouseIndex] += dy;
		cl.mouseTime = time;
	}
}


// joystick values stay set until changed

void CL_JoystickEvent( int axis, int value, int time )
{
	if ( axis < 0 || axis >= MAX_JOYSTICK_AXIS ) {
		Com_Error( ERR_DROP, "CL_JoystickEvent: bad axis %i", axis );
	}
	cl.joystickAxis[axis] = value;
}


static void CL_JoystickMove( usercmd_t *cmd )
{
	int		movespeed;
	float	anglespeed;

	if ( in_speed.active ^ !!cl_run->integer ) {
		movespeed = 2;
	} else {
		movespeed = 1;
		cmd->buttons |= BUTTON_WALKING;
	}

	if ( in_speed.active ) {
		anglespeed = ((float)cls.frametime / 1000.0f) * cl_anglespeedkey->value;
	} else {
		anglespeed = (float)cls.frametime / 1000.0f;
	}

	if ( !in_strafe.active ) {
		cl.viewangles[YAW] += anglespeed * cl_yawspeed->value * cl.joystickAxis[AXIS_SIDE];
	} else {
		cmd->rightmove = ClampChar( cmd->rightmove + cl.joystickAxis[AXIS_SIDE] );
	}

	if ( in_mlooking ) {
		cl.viewangles[PITCH] += anglespeed * cl_pitchspeed->value * cl.joystickAxis[AXIS_FORWARD];
	} else {
		cmd->forwardmove = ClampChar( cmd->forwardmove + cl.joystickAxis[AXIS_FORWARD] );
	}

	cmd->upmove = ClampChar( cmd->upmove + cl.joystickAxis[AXIS_UP] );
}


static void CL_MouseMove( usercmd_t* cmd )
{
	float mx, my;

	// allow mouse smoothing
	if ( m_filter->integer ) {
		mx = ( cl.mouseDx[0] + cl.mouseDx[1] ) * 0.5;
		my = ( cl.mouseDy[0] + cl.mouseDy[1] ) * 0.5;
	} else {
		mx = cl.mouseDx[cl.mouseIndex];
		my = cl.mouseDy[cl.mouseIndex];
	}
	cl.mouseIndex ^= 1;
	cl.mouseDx[cl.mouseIndex] = 0;
	cl.mouseDy[cl.mouseIndex] = 0;

	if (mx == 0.0f && my == 0.0f)
		return;

	if (m_accel->value != 0.0f) {
		// legacy style
		if (m_accelStyle->integer == 0) {
			const float rate = sqrtf( mx * mx + my * my ) / (float)frame_msec;
			float speed = m_speed->value + rate * m_accel->value;

			if (m_limit->value != 0.0f && (speed > m_limit->value))
				speed = m_limit->value;

			if (cl_showMouseRate->integer)
				Com_Printf( "rate: %f, speed: %f\n", rate, speed );

			mx *= speed;
			my *= speed;
		// new style, similar to quake3e's cl_mouseAccelStyle 1
		} else {
			const float offset = m_accelOffset->value;
			const float rateXa = fabsf( mx ) / (float)frame_msec;
			const float rateYa = fabsf( my ) / (float)frame_msec;
			const float powerXa = powf( rateXa / offset, m_accel->value );
			const float powerYa = powf( rateYa / offset, m_accel->value );
			const float powerX = mx >= 0 ? powerXa : -powerXa;
			const float powerY = my >= 0 ? powerYa : -powerYa;

			mx = m_speed->value * ( mx + powerX * offset );
			my = m_speed->value * ( my + powerY * offset );

			if (cl_showMouseRate->integer)
				Com_Printf( "ratex: %f, ratey: %f, powx: %f, powy: %f\n", rateXa, rateYa, powerX, powerY );
		}
	} else {
		float speed = m_speed->value;

		if (m_limit->value != 0.0f && speed > m_limit->value)
			speed = m_limit->value;

		mx *= speed;
		my *= speed;
	}

	// scale by FOV (+zoom only)
	mx *= cl.cgameSensitivity;
	my *= cl.cgameSensitivity;

	// add mouse X/Y movement to cmd
	if ( in_strafe.active ) {
		cmd->rightmove = ClampChar( cmd->rightmove + m_side->value * mx );
	} else {
		cl.viewangles[YAW] -= m_yaw->value * mx;
	}

	if ( (in_mlooking || cl_freelook->integer) && !in_strafe.active ) {
		cl.viewangles[PITCH] += m_pitch->value * my;
	} else {
		cmd->forwardmove = ClampChar( cmd->forwardmove - m_forward->value * my );
	}
}


static void CL_CmdButtons( usercmd_t *cmd )
{
	int i;

	// figure button bits
	// send a button bit even if the key was pressed and released in
	// less than a frame
	//
	for (i = 0 ; i < 15 ; i++) {
		if ( in_buttons[i].active || in_buttons[i].wasPressed ) {
			cmd->buttons |= 1 << i;
		}
		in_buttons[i].wasPressed = qfalse;
	}

	if ( cls.keyCatchers ) {
		cmd->buttons |= BUTTON_TALK;
	}

	// allow the game to know if any key at all is
	// currently pressed, even if it isn't bound to anything
	if ( anykeydown && !cls.keyCatchers ) {
		cmd->buttons |= BUTTON_ANY;
	}
}


static void CL_FinishMove( usercmd_t *cmd )
{
	// copy the state that the cgame is currently sending
	cmd->weapon = cl.cgameUserCmdValue;

	// send the current server time so the amount of movement
	// can be determined without allowing cheating
	cmd->serverTime = cl.serverTime;

	for (int i = 0; i < 3; ++i) {
		cmd->angles[i] = ANGLE2SHORT(cl.viewangles[i]);
	}
}


static usercmd_t CL_CreateCmd()
{
	usercmd_t	cmd;
	vec3_t		oldAngles;

	VectorCopy( cl.viewangles, oldAngles );

	// keyboard angle adjustment
	CL_AdjustAngles();
	
	Com_Memset( &cmd, 0, sizeof( cmd ) );

	CL_CmdButtons( &cmd );

	// get basic movement from keyboard
	CL_KeyMove( &cmd );

	// get basic movement from mouse
	CL_MouseMove( &cmd );
	cl.userCmdTime = Sys_Milliseconds();

	// get basic movement from joystick
	CL_JoystickMove( &cmd );

	// check to make sure the angles haven't wrapped
	if ( cl.viewangles[PITCH] - oldAngles[PITCH] > 90 ) {
		cl.viewangles[PITCH] = oldAngles[PITCH] + 90;
	} else if ( oldAngles[PITCH] - cl.viewangles[PITCH] > 90 ) {
		cl.viewangles[PITCH] = oldAngles[PITCH] - 90;
	}

	// store out the final values
	CL_FinishMove( &cmd );

	// draw debug graphs of turning for mouse testing
	if ( cl_debugMove->integer ) {
		if ( cl_debugMove->integer == 1 ) {
			SCR_DebugGraph( fabs(cl.viewangles[YAW] - oldAngles[YAW]), 0 );
		}
		if ( cl_debugMove->integer == 2 ) {
			SCR_DebugGraph( fabs(cl.viewangles[PITCH] - oldAngles[PITCH]), 0 );
		}
	}

	return cmd;
}


// create a new usercmd_t structure for this frame

static void CL_CreateNewCommands()
{
	// no need to create usercmds until we have a gamestate
	if ( cls.state < CA_PRIMED ) {
		return;
	}

	frame_msec = com_frameTime - old_com_frameTime;

	if (!clc.demoplaying)
	{
        // if running less than 5fps, truncate the extra time to prevent
        // unexpected moves after a hitch
        if ( frame_msec > 200 ) {
            frame_msec = 200;
        } else if (frame_msec < 1) {
            // too fast input
            return;
        }
	}
	
	
	
	old_com_frameTime = com_frameTime;

	// generate a command for this frame
	cl.cmdNumber++;
	int cmdNum = cl.cmdNumber & CMD_MASK;
	cl.cmds[cmdNum] = CL_CreateCmd();
}


/*
Returns false if we are over the maxpackets limit
and should choke back the bandwidth a bit by not sending
a packet this frame.  All the commands will still get
delivered in the next packet, but saving a header and
getting more delta compression will reduce total bandwidth.
*/
static qbool CL_ReadyToSendPacket()
{
	int		oldPacketNum;
	int		delta;

	// don't send anything if playing back a demo
	if ( clc.demoplaying || cls.state == CA_CINEMATIC ) {
		return qfalse;
	}

	// If we are downloading, we send no less than 50ms between packets
	if ( *clc.downloadTempName &&
		cls.realtime - clc.lastPacketSentTime < 50 ) {
		return qfalse;
	}

	// if we don't have a valid gamestate yet, only send
	// one packet a second
	if ( cls.state != CA_ACTIVE &&
		cls.state != CA_PRIMED &&
		!*clc.downloadTempName &&
		cls.realtime - clc.lastPacketSentTime < 1000 ) {
		return qfalse;
	}

	// send every frame for loopbacks
	if ( clc.netchan.remoteAddress.type == NA_LOOPBACK ) {
		return qtrue;
	}

	// send every frame for LAN
	if ( Sys_IsLANAddress( clc.netchan.remoteAddress ) ) {
		return qtrue;
	}

	oldPacketNum = (clc.netchan.outgoingSequence - 1) & PACKET_MASK;
	delta = cls.realtime -  cl.outPackets[ oldPacketNum ].p_realtime;
	if ( delta < 1000 / cl_maxpackets->integer ) {
		// the accumulated commands will go out in the next packet
		return qfalse;
	}

	return qtrue;
}

/*
===================
CL_WritePacket

Create and send the command packet to the server
Including both the reliable commands and the usercmds

During normal gameplay, a client packet will contain something like:

4	sequence number
2	qport
4	serverid
4	acknowledged sequence number
4	clc.serverCommandSequence
<optional reliable commands>
1	clc_move or clc_moveNoDelta
1	command count
<count * usercmds>

===================
*/
void CL_WritePacket( void ) 
{

	// don't send anything if playing back a demo
	if ( clc.demoplaying || cls.state == CA_CINEMATIC ) {
		return;
	}
	
    msg_t		buf;
    byte		data[MAX_MSGLEN];
    int			i, j;
    usercmd_t	*cmd, *oldcmd;
    usercmd_t	nullcmd;
    int			packetNum;
    int			oldPacketNum;
    int			count, key;

	Com_Memset( &nullcmd, 0, sizeof(nullcmd) );
	oldcmd = &nullcmd;

	MSG_Init( &buf, data, sizeof(data) );

	MSG_Bitstream( &buf );
	// write the current serverId so the server
	// can tell if this is from the current gameState
	MSG_WriteLong( &buf, cl.serverId );

	// write the last message we received, which can
	// be used for delta compression, and is also used
	// to tell if we dropped a gamestate
	MSG_WriteLong( &buf, clc.serverMessageSequence );

	// write the last reliable message we received
	MSG_WriteLong( &buf, clc.serverCommandSequence );

	// write any unacknowledged clientCommands
	for ( i = clc.reliableAcknowledge + 1 ; i <= clc.reliableSequence ; i++ ) {
		MSG_WriteByte( &buf, clc_clientCommand );
		MSG_WriteLong( &buf, i );
		MSG_WriteString( &buf, clc.reliableCommands[ i & (MAX_RELIABLE_COMMANDS-1) ] );
	}

	// we want to send all the usercmds that were generated in the last
	// few packet, so even if a couple packets are dropped in a row,
	// all the cmds will make it to the server
	oldPacketNum = (clc.netchan.outgoingSequence - 1 - cl_packetdup->integer) & PACKET_MASK;
	count = cl.cmdNumber - cl.outPackets[ oldPacketNum ].p_cmdNumber;
	if ( count > MAX_PACKET_USERCMDS ) {
		count = MAX_PACKET_USERCMDS;
		Com_Printf("MAX_PACKET_USERCMDS\n");
	}
	if ( count >= 1 ) {
		if ( cl_showSend->integer ) {
			Com_Printf( "(%i)", count );
		}

		// begin a client move command
		if ( cl_nodelta->integer || !cl.snap.valid || clc.demowaiting
			|| clc.serverMessageSequence != cl.snap.messageNum ) {
			MSG_WriteByte (&buf, clc_moveNoDelta);
		} else {
			MSG_WriteByte (&buf, clc_move);
		}

		// write the command count
		MSG_WriteByte( &buf, count );

		// use the checksum feed in the key
		key = clc.checksumFeed;
		// also use the message acknowledge
		key ^= clc.serverMessageSequence;
		// also use the last acknowledged server command in the key
		key ^= Com_HashKey(clc.serverCommands[ clc.serverCommandSequence & (MAX_RELIABLE_COMMANDS-1) ], 32);

		// write all the commands, including the predicted command
		for ( i = 0 ; i < count ; i++ ) {
			j = (cl.cmdNumber - count + i + 1) & CMD_MASK;
			cmd = &cl.cmds[j];
			MSG_WriteDeltaUsercmdKey (&buf, key, oldcmd, cmd);
			oldcmd = cmd;
		}
	}

	//
	// deliver the message
	//
	packetNum = clc.netchan.outgoingSequence & PACKET_MASK;
	cl.outPackets[ packetNum ].p_realtime = cls.realtime;
	cl.outPackets[ packetNum ].p_serverTime = oldcmd->serverTime;
	cl.outPackets[ packetNum ].p_cmdNumber = cl.cmdNumber;
	clc.lastPacketSentTime = cls.realtime;

	if ( cl_showSend->integer ) {
		Com_Printf( "%i ", buf.cursize );
	}

	CL_Netchan_Transmit (&clc.netchan, &buf);

	// clients never really should have messages large enough
	// to fragment, but in case they do, fire them all off
	// at once
	// TTimo: this causes a packet burst, which is bad karma for winsock
	// added a WARNING message, we'll see if there are legit situations where this happens
	while ( clc.netchan.unsentFragments ) {
		Com_DPrintf( "WARNING: #462 unsent fragments (not supposed to happen!)\n" );
		CL_Netchan_TransmitNextFragment( &clc.netchan );
	}
}


// called every frame to build and send a command packet to the server

void CL_SendCmd()
{
	// don't send any message if not connected
	if ( cls.state < CA_CONNECTED ) {
		return;
	}

	// don't send commands if paused
	if ( com_sv_running->integer && sv_paused->integer && cl_paused->integer ) {
		return;
	}

	// we create commands even if a demo is playing,
	CL_CreateNewCommands();

	// don't send a packet if the last packet was sent too recently
	if ( !CL_ReadyToSendPacket() ) {
		if ( cl_showSend->integer ) {
			Com_Printf( ". " );
		}
		return;
	}

	CL_WritePacket();
}


///////////////////////////////////////////////////////////////


static void IN_UpDown(void) {IN_KeyDown(&in_up);}
static void IN_UpUp(void) {IN_KeyUp(&in_up);}
static void IN_DownDown(void) {IN_KeyDown(&in_down);}
static void IN_DownUp(void) {IN_KeyUp(&in_down);}
static void IN_LeftDown(void) {IN_KeyDown(&in_left);}
static void IN_LeftUp(void) {IN_KeyUp(&in_left);}
static void IN_RightDown(void) {IN_KeyDown(&in_right);}
static void IN_RightUp(void) {IN_KeyUp(&in_right);}
static void IN_ForwardDown(void) {IN_KeyDown(&in_forward);}
static void IN_ForwardUp(void) {IN_KeyUp(&in_forward);}
static void IN_BackDown(void) {IN_KeyDown(&in_back);}
static void IN_BackUp(void) {IN_KeyUp(&in_back);}
static void IN_LookupDown(void) {IN_KeyDown(&in_lookup);}
static void IN_LookupUp(void) {IN_KeyUp(&in_lookup);}
static void IN_LookdownDown(void) {IN_KeyDown(&in_lookdown);}
static void IN_LookdownUp(void) {IN_KeyUp(&in_lookdown);}
static void IN_MoveleftDown(void) {IN_KeyDown(&in_moveleft);}
static void IN_MoveleftUp(void) {IN_KeyUp(&in_moveleft);}
static void IN_MoverightDown(void) {IN_KeyDown(&in_moveright);}
static void IN_MoverightUp(void) {IN_KeyUp(&in_moveright);}

static void IN_SpeedDown(void) {IN_KeyDown(&in_speed);}
static void IN_SpeedUp(void) {IN_KeyUp(&in_speed);}
static void IN_StrafeDown(void) {IN_KeyDown(&in_strafe);}
static void IN_StrafeUp(void) {IN_KeyUp(&in_strafe);}

static void IN_Button0Down(void) {IN_KeyDown(&in_buttons[0]);}
static void IN_Button0Up(void) {IN_KeyUp(&in_buttons[0]);}
static void IN_Button1Down(void) {IN_KeyDown(&in_buttons[1]);}
static void IN_Button1Up(void) {IN_KeyUp(&in_buttons[1]);}
static void IN_Button2Down(void) {IN_KeyDown(&in_buttons[2]);}
static void IN_Button2Up(void) {IN_KeyUp(&in_buttons[2]);}
static void IN_Button3Down(void) {IN_KeyDown(&in_buttons[3]);}
static void IN_Button3Up(void) {IN_KeyUp(&in_buttons[3]);}
static void IN_Button4Down(void) {IN_KeyDown(&in_buttons[4]);}
static void IN_Button4Up(void) {IN_KeyUp(&in_buttons[4]);}
static void IN_Button5Down(void) {IN_KeyDown(&in_buttons[5]);}
static void IN_Button5Up(void) {IN_KeyUp(&in_buttons[5]);}
static void IN_Button6Down(void) {IN_KeyDown(&in_buttons[6]);}
static void IN_Button6Up(void) {IN_KeyUp(&in_buttons[6]);}
static void IN_Button7Down(void) {IN_KeyDown(&in_buttons[7]);}
static void IN_Button7Up(void) {IN_KeyUp(&in_buttons[7]);}
static void IN_Button8Down(void) {IN_KeyDown(&in_buttons[8]);}
static void IN_Button8Up(void) {IN_KeyUp(&in_buttons[8]);}
static void IN_Button9Down(void) {IN_KeyDown(&in_buttons[9]);}
static void IN_Button9Up(void) {IN_KeyUp(&in_buttons[9]);}
static void IN_Button10Down(void) {IN_KeyDown(&in_buttons[10]);}
static void IN_Button10Up(void) {IN_KeyUp(&in_buttons[10]);}
static void IN_Button11Down(void) {IN_KeyDown(&in_buttons[11]);}
static void IN_Button11Up(void) {IN_KeyUp(&in_buttons[11]);}
static void IN_Button12Down(void) {IN_KeyDown(&in_buttons[12]);}
static void IN_Button12Up(void) {IN_KeyUp(&in_buttons[12]);}
static void IN_Button13Down(void) {IN_KeyDown(&in_buttons[13]);}
static void IN_Button13Up(void) {IN_KeyUp(&in_buttons[13]);}
static void IN_Button14Down(void) {IN_KeyDown(&in_buttons[14]);}
static void IN_Button14Up(void) {IN_KeyUp(&in_buttons[14]);}
static void IN_Button15Down(void) {IN_KeyDown(&in_buttons[15]);}
static void IN_Button15Up(void) {IN_KeyUp(&in_buttons[15]);}


static void IN_Restart_f()
{
	Sys_ShutdownInput();
	CL_ShutdownInput();

	CL_InitInput();
	Sys_InitInput();
}


static const cvarTableItem_t cl_cvars[] =
{
	{ NULL, "cl_drawMouseLag", "0", 0, CVART_BOOL, NULL, NULL, "draws sampling to display/upload delays" },
	{ &m_speed, "m_speed", "2", CVAR_ARCHIVE, CVART_FLOAT, "0", "100", "mouse sensitivity" },
	{ &m_accel, "m_accel", "0", CVAR_ARCHIVE, CVART_FLOAT, "0", NULL, "mouse acceleration" },
	{ &m_accelStyle, "m_accelStyle", "0", CVAR_ARCHIVE, CVART_INTEGER, "0", "1", "0=original, 1=new" },
	{ &m_accelOffset, "m_accelOffset", "5", CVAR_ARCHIVE, CVART_FLOAT, "0.001", "5000", "offset for the power function\nfor m_accelStyle 1 only" },
	{ &m_limit, "m_limit", "0", CVAR_ARCHIVE, CVART_FLOAT, "0", NULL, "mouse speed cap (0=disabled)\nfor m_accelStyle 0 only" },
	{ &m_pitch, "m_pitch", "0.022", CVAR_ARCHIVE, CVART_FLOAT, "-100", "100", "post-accel vertical mouse sens." },
	{ &m_yaw, "m_yaw", "0.022", CVAR_ARCHIVE, CVART_FLOAT, "-100", "100", "post-accel horizontal mouse sens." },
	{ &m_forward, "m_forward", "0.25", CVAR_ARCHIVE, CVART_FLOAT, "-32767", "32767", "forward/backwards mouse sensitivity (+strafe)" },
	{ &m_side, "m_side", "0.25", CVAR_ARCHIVE, CVART_FLOAT, "-32767", "32767", "left/right mouse sensitivity (+strafe)" },
	{ &m_filter, "m_filter", "0", CVAR_ARCHIVE, CVART_BOOL, NULL, NULL, "mouse smoothing" },
	{ &cl_pitchspeed, "cl_pitchspeed", "140", CVAR_ARCHIVE, CVART_FLOAT, "0", NULL, "+lookup +lookdown speed" },
	{ &cl_yawspeed, "cl_yawspeed", "140", CVAR_ARCHIVE, CVART_FLOAT, "0", NULL, "+right +left speed" },
	{ &cl_anglespeedkey, "cl_anglespeedkey", "1.5", 0, CVART_FLOAT },
	{ &cl_run, "cl_run", "1", CVAR_ARCHIVE, CVART_BOOL, NULL, NULL, "running enabled (0=walk)" },
	{ &cl_freelook, "cl_freelook", "1", CVAR_ARCHIVE, CVART_BOOL, NULL, NULL, "0 means you can't look up/down" },
	{ &cl_showMouseRate, "cl_showmouserate", "0", 0, CVART_BOOL, NULL, NULL, "prints info when m_accel != 0" },
	{ &cl_nodelta, "cl_nodelta", "0", 0, CVART_BOOL, NULL, NULL, "disables delta-compression on uploaded user commands" },
	{ &cl_debugMove, "cl_debugMove", "0", 0, CVART_INTEGER, "0", "2", help_cl_debugMove }
};


static const cmdTableItem_t cl_cmds[] =
{
#define help_button1 "\nYou can't move and there's a chat bubble over your head."
	{ "in_restart", IN_Restart_f, NULL, "restarts the input system" },
	{ "+moveup", IN_UpDown, NULL, "starts jumping/moving up" help_plus_minus },
	{ "-moveup", IN_UpUp, NULL, "stops jumping/moving up" help_plus_minus },
	{ "+movedown", IN_DownDown, NULL, "starts crouching/moving down" help_plus_minus },
	{ "-movedown", IN_DownUp, NULL, "stops crouching/moving down" help_plus_minus },
	{ "+left", IN_LeftDown, NULL, "starts rotating left" help_plus_minus },
	{ "-left", IN_LeftUp, NULL, "stops rotating left" help_plus_minus },
	{ "+right", IN_RightDown, NULL, "starts rotating right" help_plus_minus },
	{ "-right", IN_RightUp, NULL, "stops rotating right" help_plus_minus },
	{ "+forward", IN_ForwardDown, NULL, "starts moving forward" help_plus_minus },
	{ "-forward", IN_ForwardUp, NULL, "stops moving forward" help_plus_minus },
	{ "+back", IN_BackDown, NULL, "starts moving backwards" help_plus_minus },
	{ "-back", IN_BackUp, NULL, "stops moving backwards" help_plus_minus },
	{ "+lookup", IN_LookupDown, NULL, "starts looking up" help_plus_minus },
	{ "-lookup", IN_LookupUp, NULL, "stops looking up" help_plus_minus },
	{ "+lookdown", IN_LookdownDown, NULL, "starts looking down" help_plus_minus },
	{ "-lookdown", IN_LookdownUp, NULL, "stops looking down" help_plus_minus },
	{ "+strafe", IN_StrafeDown, NULL, "starts mouse strafing mode" help_plus_minus },
	{ "-strafe", IN_StrafeUp, NULL, "stops mouse strafing mode" help_plus_minus },
	{ "+moveleft", IN_MoveleftDown, NULL, "starts strafing left" help_plus_minus },
	{ "-moveleft", IN_MoveleftUp, NULL, "stops strafing left" help_plus_minus },
	{ "+moveright", IN_MoverightDown, NULL, "starts strafing right" help_plus_minus },
	{ "-moveright", IN_MoverightUp, NULL, "stops strafing right" help_plus_minus },
	{ "+speed", IN_SpeedDown, NULL, "start walk/run toggle" },
	{ "-speed", IN_SpeedUp, NULL, "stops walk/run toggle" },
	{ "+attack", IN_Button0Down, NULL, "starts firing the gun" help_plus_minus },
	{ "-attack", IN_Button0Up, NULL, "stops firing the gun" help_plus_minus },
	{ "+button0", IN_Button0Down, NULL, "starts firing the gun" help_plus_minus },
	{ "-button0", IN_Button0Up, NULL, "stops firing the gun" help_plus_minus },
	{ "+button1", IN_Button1Down, NULL, "starts chat stance" help_button1 help_plus_minus },
	{ "-button1", IN_Button1Up, NULL, "stops chat stance" help_button1 help_plus_minus },
	{ "+button2", IN_Button2Down, NULL, "starts using item" help_plus_minus },
	{ "-button2", IN_Button2Up, NULL, "stops using item" help_plus_minus },
	{ "+button3", IN_Button3Down, NULL, "starts taunt" help_plus_minus },
	{ "-button3", IN_Button3Up, NULL, "stops taunt" help_plus_minus },
	{ "+button4", IN_Button4Down },
	{ "-button4", IN_Button4Up },
	{ "+button5", IN_Button5Down },
	{ "-button5", IN_Button5Up },
	{ "+button6", IN_Button6Down },
	{ "-button6", IN_Button6Up },
	{ "+button7", IN_Button7Down },
	{ "-button7", IN_Button7Up },
	{ "+button8", IN_Button8Down },
	{ "-button8", IN_Button8Up },
	{ "+button9", IN_Button9Down },
	{ "-button9", IN_Button9Up },
	{ "+button10", IN_Button10Down },
	{ "-button10", IN_Button10Up },
	{ "+button11", IN_Button11Down },
	{ "-button11", IN_Button11Up },
	{ "+button12", IN_Button12Down },
	{ "-button12", IN_Button12Up },
	{ "+button13", IN_Button13Down },
	{ "-button13", IN_Button13Up },
	{ "+button14", IN_Button14Down },
	{ "-button14", IN_Button14Up },
	{ "+button15", IN_Button15Down },
	{ "-button15", IN_Button15Up },
	{ "+mlook", IN_MLookDown, NULL, "enables free look when cl_freelook is 0" help_plus_minus },
	{ "-mlook", IN_MLookUp, NULL, "disables free look when cl_freelook is 0" help_plus_minus }
#undef help_button1
};


void CL_InitInput()
{
	Cmd_RegisterArray( cl_cmds, MODULE_INPUT );
	Cvar_RegisterArray( cl_cvars, MODULE_INPUT );
}


void CL_ShutdownInput()
{
	Cmd_UnregisterModule( MODULE_INPUT );
}