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/*

Copyright (C) 1996-1997 Id Software, Inc.

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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

*/

#include "quakedef.h"

/*

key up events are sent even if in console mode

*/

#define		MAXCMDLINE	256

char	key_lines[32][MAXCMDLINE];

int		key_linepos;

int		shift_down=false;

int		key_lastpress;

int		edit_line=0;

int		history_line=0;

keydest_t	key_dest;

int		key_count;			// incremented every key event

char	*keybindings[256];

qboolean	consolekeys[256];	// if true, can't be rebound while in console

qboolean	menubound[256];	// if true, can't be rebound while in menu

int		keyshift[256];		// key to map to if shift held down in console

int		key_repeats[256];	// if > 1, it is autorepeating

qboolean	keydown[256];

typedef struct

{

	char	*name;

	int		keynum;

} keyname_t;

keyname_t keynames[] =

{

	{"TAB", K_TAB},

	{"ENTER", K_ENTER},

	{"ESCAPE", K_ESCAPE},

	{"SPACE", K_SPACE},

	{"BACKSPACE", K_BACKSPACE},

	{"UPARROW", K_UPARROW},

	{"DOWNARROW", K_DOWNARROW},

	{"LEFTARROW", K_LEFTARROW},

	{"RIGHTARROW", K_RIGHTARROW},

	{"ALT", K_ALT},

	{"CTRL", K_CTRL},

	{"SHIFT", K_SHIFT},

	{"F1", K_F1},

	{"F2", K_F2},

	{"F3", K_F3},

	{"F4", K_F4},

	{"F5", K_F5},

	{"F6", K_F6},

	{"F7", K_F7},

	{"F8", K_F8},

	{"F9", K_F9},

	{"F10", K_F10},

	{"F11", K_F11},

	{"F12", K_F12},

	{"INS", K_INS},

	{"DEL", K_DEL},

	{"PGDN", K_PGDN},

	{"PGUP", K_PGUP},

	{"HOME", K_HOME},

	{"END", K_END},

	{"MOUSE1", K_MOUSE1},

	{"MOUSE2", K_MOUSE2},

	{"MOUSE3", K_MOUSE3},

	{"JOY1", K_JOY1},

	{"JOY2", K_JOY2},

	{"JOY3", K_JOY3},

	{"JOY4", K_JOY4},

	{"AUX1", K_AUX1},

	{"AUX2", K_AUX2},

	{"AUX3", K_AUX3},

	{"AUX4", K_AUX4},

	{"AUX5", K_AUX5},

	{"AUX6", K_AUX6},

	{"AUX7", K_AUX7},

	{"AUX8", K_AUX8},

	{"AUX9", K_AUX9},

	{"AUX10", K_AUX10},

	{"AUX11", K_AUX11},

	{"AUX12", K_AUX12},

	{"AUX13", K_AUX13},

	{"AUX14", K_AUX14},

	{"AUX15", K_AUX15},

	{"AUX16", K_AUX16},

	{"AUX17", K_AUX17},

	{"AUX18", K_AUX18},

	{"AUX19", K_AUX19},

	{"AUX20", K_AUX20},

	{"AUX21", K_AUX21},

	{"AUX22", K_AUX22},

	{"AUX23", K_AUX23},

	{"AUX24", K_AUX24},

	{"AUX25", K_AUX25},

	{"AUX26", K_AUX26},

	{"AUX27", K_AUX27},

	{"AUX28", K_AUX28},

	{"AUX29", K_AUX29},

	{"AUX30", K_AUX30},

	{"AUX31", K_AUX31},

	{"AUX32", K_AUX32},

	{"PAUSE", K_PAUSE},

	{"MWHEELUP", K_MWHEELUP},

	{"MWHEELDOWN", K_MWHEELDOWN},

	{"SEMICOLON", ';'},	// because a raw semicolon seperates commands

	{NULL,0}

};

/*

==============================================================================

			LINE TYPING INTO THE CONSOLE

==============================================================================

*/

/*

====================

Key_Console

Interactive line editing and console scrollback

====================

*/

void Key_Console (int key)

{

	char	*cmd;

	if (key == K_ENTER)

	{

		Cbuf_AddText (key_lines[edit_line]+1);	// skip the >

		Cbuf_AddText ("\n");

		Con_Printf ("%s\n",key_lines[edit_line]);

		edit_line = (edit_line + 1) & 31;

		history_line = edit_line;

		key_lines[edit_line][0] = ']';

		key_linepos = 1;

		if (cls.state == ca_disconnected)

			SCR_UpdateScreen ();	// force an update, because the command

									// may take some time

		return;

	}

	if (key == K_TAB)

	{	// command completion

		cmd = Cmd_CompleteCommand (key_lines[edit_line]+1);

		if (!cmd)

			cmd = Cvar_CompleteVariable (key_lines[edit_line]+1);

		if (cmd)

		{

			Q_strcpy (key_lines[edit_line]+1, cmd);

			key_linepos = Q_strlen(cmd)+1;

			key_lines[edit_line][key_linepos] = ' ';

			key_linepos++;

			key_lines[edit_line][key_linepos] = 0;

			return;

		}

	}

	if (key == K_BACKSPACE || key == K_LEFTARROW)

	{

		if (key_linepos > 1)

			key_linepos--;

		return;

	}

	if (key == K_UPARROW)

	{

		do

		{

			history_line = (history_line - 1) & 31;

		} while (history_line != edit_line

				&& !key_lines[history_line][1]);

		if (history_line == edit_line)

			history_line = (edit_line+1)&31;

		Q_strcpy(key_lines[edit_line], key_lines[history_line]);

		key_linepos = Q_strlen(key_lines[edit_line]);

		return;

	}

	if (key == K_DOWNARROW)

	{

		if (history_line == edit_line) return;

		do

		{

			history_line = (history_line + 1) & 31;

		}

		while (history_line != edit_line

			&& !key_lines[history_line][1]);

		if (history_line == edit_line)

		{

			key_lines[edit_line][0] = ']';

			key_linepos = 1;

		}

		else

		{

			Q_strcpy(key_lines[edit_line], key_lines[history_line]);

			key_linepos = Q_strlen(key_lines[edit_line]);

		}

		return;

	}

	if (key == K_PGUP || key==K_MWHEELUP)

	{

		con_backscroll += 2;

		if (con_backscroll > con_totallines - (vid.height>>3) - 1)

			con_backscroll = con_totallines - (vid.height>>3) - 1;

		return;

	}

	if (key == K_PGDN || key==K_MWHEELDOWN)

	{

		con_backscroll -= 2;

		if (con_backscroll < 0)

			con_backscroll = 0;

		return;

	}

	if (key == K_HOME)

	{

		con_backscroll = con_totallines - (vid.height>>3) - 1;

		return;

	}

	if (key == K_END)

	{

		con_backscroll = 0;

		return;

	}

	if (key < 32 || key > 127)

		return;	// non printable

	if (key_linepos < MAXCMDLINE-1)

	{

		key_lines[edit_line][key_linepos] = key;

		key_linepos++;

		key_lines[edit_line][key_linepos] = 0;

	}

}

//============================================================================

char chat_buffer[32];

qboolean team_message = false;

void Key_Message (int key)

{

	static int chat_bufferlen = 0;

	if (key == K_ENTER)

	{

		if (team_message)

			Cbuf_AddText ("say_team \"");

		else

			Cbuf_AddText ("say \"");

		Cbuf_AddText(chat_buffer);

		Cbuf_AddText("\"\n");

		key_dest = key_game;

		chat_bufferlen = 0;

		chat_buffer[0] = 0;

		return;

	}

	if (key == K_ESCAPE)

	{

		key_dest = key_game;

		chat_bufferlen = 0;

		chat_buffer[0] = 0;

		return;

	}

	if (key < 32 || key > 127)

		return;	// non printable

	if (key == K_BACKSPACE)

	{

		if (chat_bufferlen)

		{

			chat_bufferlen--;

			chat_buffer[chat_bufferlen] = 0;

		}

		return;

	}

	if (chat_bufferlen == 31)

		return; // all full

	chat_buffer[chat_bufferlen++] = key;

	chat_buffer[chat_bufferlen] = 0;

}

//============================================================================

/*

===================

Key_StringToKeynum

Returns a key number to be used to index keybindings[] by looking at

the given string.  Single ascii characters return themselves, while

the K_* names are matched up.

===================

*/

int Key_StringToKeynum (char *str)

{

	keyname_t	*kn;

	if (!str || !str[0])

		return -1;

	if (!str[1])

		return str[0];

	for (kn=keynames ; kn->name ; kn++)

	{

		if (!Q_strcasecmp(str,kn->name))

			return kn->keynum;

	}

	return -1;

}

/*

===================

Key_KeynumToString

Returns a string (either a single ascii char, or a K_* name) for the

given keynum.

FIXME: handle quote special (general escape sequence?)

===================

*/

char *Key_KeynumToString (int keynum)

{

	keyname_t	*kn;

	static	char	tinystr[2];

	if (keynum == -1)

		return "";

	if (keynum > 32 && keynum < 127)

	{	// printable ascii

		tinystr[0] = keynum;

		tinystr[1] = 0;

		return tinystr;

	}

	for (kn=keynames ; kn->name ; kn++)

		if (keynum == kn->keynum)

			return kn->name;

	return "";

}

/*

===================

Key_SetBinding

===================

*/

void Key_SetBinding (int keynum, char *binding)

{

	char	*new;

	int		l;

	if (keynum == -1)

		return;

// free old bindings

	if (keybindings[keynum])

	{

		Z_Free (keybindings[keynum]);

		keybindings[keynum] = NULL;

	}

// allocate memory for new binding

	l = Q_strlen (binding);

	new = Z_Malloc (l+1);

	Q_strcpy (new, binding);

	new[l] = 0;

	keybindings[keynum] = new;

}

/*

===================

Key_Unbind_f

===================

*/

void Key_Unbind_f (void)

{

	int		b;

	if (Cmd_Argc() != 2)

	{

		Con_Printf ("unbind  : remove commands from a key\n");

		return;

	}

	b = Key_StringToKeynum (Cmd_Argv(1));

	if (b==-1)

	{

		Con_Printf ("\"%s\" isn't a valid key\n", Cmd_Argv(1));

		return;

	}

	Key_SetBinding (b, "");

}

void Key_Unbindall_f (void)

{

	int		i;

	for (i=0 ; i<256 ; i++)

		if (keybindings[i])

			Key_SetBinding (i, "");

}

/*

===================

Key_Bind_f

===================

*/

void Key_Bind_f (void)

{

	int			i, c, b;

	char		cmd[1024];

	c = Cmd_Argc();

	if (c != 2 && c != 3)

	{

		Con_Printf ("bind  [command] : attach a command to a key\n");

		return;

	}

	b = Key_StringToKeynum (Cmd_Argv(1));

	if (b==-1)

	{

		Con_Printf ("\"%s\" isn't a valid key\n", Cmd_Argv(1));

		return;

	}

	if (c == 2)

	{

		if (keybindings[b])

			Con_Printf ("\"%s\" = \"%s\"\n", Cmd_Argv(1), keybindings[b] );

		else

			Con_Printf ("\"%s\" is not bound\n", Cmd_Argv(1) );

		return;

	}

// copy the rest of the command line

	cmd[0] = 0;		// start out with a null string

	for (i=2 ; i< c ; i++)

	{

		if (i > 2)

			strcat (cmd, " ");

		strcat (cmd, Cmd_Argv(i));

	}

	Key_SetBinding (b, cmd);

}

/*

============

Key_WriteBindings

Writes lines containing "bind key value"

============

*/

void Key_WriteBindings (FILE *f)

{

	int		i;

	for (i=0 ; i<256 ; i++)

		if (keybindings[i])

			if (*keybindings[i])

				fprintf (f, "bind \"%s\" \"%s\"\n", Key_KeynumToString(i), keybindings[i]);

}

/*

===================

Key_Init

===================

*/

void Key_Init (void)

{

	int		i;

	for (i=0 ; i<32 ; i++)

	{

		key_lines[i][0] = ']';

		key_lines[i][1] = 0;

	}

	key_linepos = 1;

//

// init ascii characters in console mode

//

	for (i=32 ; i<128 ; i++)

		consolekeys[i] = true;

	consolekeys[K_ENTER] = true;

	consolekeys[K_TAB] = true;

	consolekeys[K_LEFTARROW] = true;

	consolekeys[K_RIGHTARROW] = true;

	consolekeys[K_UPARROW] = true;

	consolekeys[K_DOWNARROW] = true;

	consolekeys[K_BACKSPACE] = true;

	consolekeys[K_PGUP] = true;

	consolekeys[K_PGDN] = true;

	consolekeys[K_SHIFT] = true;

	consolekeys[K_MWHEELUP] = true;

	consolekeys[K_MWHEELDOWN] = true;

	consolekeys['`'] = false;

	consolekeys['~'] = false;

	for (i=0 ; i<256 ; i++)

		keyshift[i] = i;

	for (i='a' ; i<='z' ; i++)

		keyshift[i] = i - 'a' + 'A';

	keyshift['1'] = '!';

	keyshift['2'] = '@';

	keyshift['3'] = '#';

	keyshift['4'] = '$';

	keyshift['5'] = '%';

	keyshift['6'] = '^';

	keyshift['7'] = '&';

	keyshift['8'] = '*';

	keyshift['9'] = '(';

	keyshift['0'] = ')';

	keyshift['-'] = '_';

	keyshift['='] = '+';

	keyshift[','] = '<';

	keyshift['.'] = '>';

	keyshift['/'] = '?';

	keyshift[';'] = ':';

	keyshift['\''] = '"';

	keyshift['['] = '{';

	keyshift[']'] = '}';

	keyshift['`'] = '~';

	keyshift['\\'] = '|';

	menubound[K_ESCAPE] = true;

	for (i=0 ; i<12 ; i++)

		menubound[K_F1+i] = true;

//

// register our functions

//

	Cmd_AddCommand ("bind",Key_Bind_f);

	Cmd_AddCommand ("unbind",Key_Unbind_f);

	Cmd_AddCommand ("unbindall",Key_Unbindall_f);

}

/*

===================

Key_Event

Called by the system between frames for both key up and key down events

Should NOT be called during an interrupt!

===================

*/

void Key_Event (int key, qboolean down)

{

	char	*kb;

	char	cmd[1024];

	keydown[key] = down;

	if (!down)

		key_repeats[key] = 0;

	key_lastpress = key;

	key_count++;

	if (key_count <= 0)

	{

		return;		// just catching keys for Con_NotifyBox

	}

// update auto-repeat status

	if (down)

	{

		key_repeats[key]++;

		if (key != K_BACKSPACE && key != K_PAUSE && key_repeats[key] > 1)

		{

			return;	// ignore most autorepeats

		}

		if (key >= 200 && !keybindings[key])

			Con_Printf ("%s is unbound, hit F4 to set.\n", Key_KeynumToString (key) );

	}

	if (key == K_SHIFT)

		shift_down = down;

//

// handle escape specialy, so the user can never unbind it

//

	if (key == K_ESCAPE)

	{

		if (!down)

			return;

		switch (key_dest)

		{

		case key_message:

			Key_Message (key);

			break;

		case key_menu:

			M_Keydown (key);

			break;

		case key_game:

		case key_console:

			M_ToggleMenu_f ();

			break;

		default:

			Sys_Error ("Bad key_dest");

		}

		return;

	}

//

// key up events only generate commands if the game key binding is

// a button command (leading + sign).  These will occur even in console mode,

// to keep the character from continuing an action started before a console

// switch.  Button commands include the kenum as a parameter, so multiple

// downs can be matched with ups

//

	if (!down)

	{

		kb = keybindings[key];

		if (kb && kb[0] == '+')

		{

			sprintf (cmd, "-%s %i\n", kb+1, key);

			Cbuf_AddText (cmd);

		}

		if (keyshift[key] != key)

		{

			kb = keybindings[keyshift[key]];

			if (kb && kb[0] == '+')

			{

				sprintf (cmd, "-%s %i\n", kb+1, key);

				Cbuf_AddText (cmd);

			}

		}

		return;

	}

//

// during demo playback, most keys bring up the main menu

//

	if (cls.demoplayback && down && consolekeys[key] && key_dest == key_game)

	{

		M_ToggleMenu_f ();

		return;

	}

//

// if not a consolekey, send to the interpreter no matter what mode is

//

	if ( (key_dest == key_menu && menubound[key])

	|| (key_dest == key_console && !consolekeys[key])

	|| (key_dest == key_game && ( !con_forcedup || !consolekeys[key] ) ) )

	{

		kb = keybindings[key];

		if (kb)

		{

			if (kb[0] == '+')

			{	// button commands add keynum as a parm

				sprintf (cmd, "%s %i\n", kb, key);

				Cbuf_AddText (cmd);

			}

			else

			{

				Cbuf_AddText (kb);

				Cbuf_AddText ("\n");

			}

		}

		return;

	}

	if (!down)

		return;		// other systems only care about key down events

	if (shift_down)

	{

		key = keyshift[key];

	}

	switch (key_dest)

	{

	case key_message:

		Key_Message (key);

		break;

	case key_menu:

		M_Keydown (key);

		break;

	case key_game:

	case key_console:

		Key_Console (key);

		break;

	default:

		Sys_Error ("Bad key_dest");

	}

}

/*

===================

Key_ClearStates

===================

*/

void Key_ClearStates (void)

{

	int		i;

	for (i=0 ; i<256 ; i++)

	{

		keydown[i] = false;

		key_repeats[i] = 0;

	}

}