/*
 * Copyright (C) 1997-2001 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.
 *
 * =======================================================================
 *
 * This file implements the inventory screen
 *
 * =======================================================================
 */

#include "header/client.h"

void CL_ParseInventory (void)
{
	int		i;

	for (i=0 ; i<MAX_ITEMS ; i++)
		cl.inventory[i] = MSG_ReadShort (&net_message);
}

static void Inv_DrawString (int x, int y, char *string)
{
	while (*string)
	{
		re.DrawChar (x, y, *string);
		x+=8;
		string++;
	}
}

static void SetStringHighBit (char *s)
{
	while (*s)
		*s++ |= 128;
}

#define	DISPLAY_ITEMS	17

void CL_DrawInventory (void)
{
	int		i, j;
	int		num, selected_num, item;
	int		index[MAX_ITEMS];
	char	string[1024];
	int		x, y;
	char	binding[1024];
	const char	*bind;
	int		selected;
	int		top;

	selected = cl.frame.playerstate.stats[STAT_SELECTED_ITEM];

	num = 0;
	selected_num = 0;

	for (i=0 ; i<MAX_ITEMS ; i++)
	{
		if (i==selected)
			selected_num = num;

		if (cl.inventory[i])
		{
			index[num] = i;
			num++;
		}
	}

	/* determine scroll point */
	top = selected_num - DISPLAY_ITEMS/2;

	if (num - top < DISPLAY_ITEMS)
		top = num - DISPLAY_ITEMS;

	if (top < 0)
		top = 0;

	x = (viddef.width-256)/2;

	y = (viddef.height-240)/2;

	/* repaint everything next frame */
	SCR_DirtyScreen ();

	re.DrawPic (x, y+8, "inventory");

	y += 24;

	x += 24;

	Inv_DrawString (x, y, "hotkey ### item");

	Inv_DrawString (x, y+8, "------ --- ----");

	y += 16;

	for (i=top ; i<num && i < top+DISPLAY_ITEMS ; i++)
	{
		item = index[i];
		/* search for a binding */
		Com_sprintf (binding, sizeof(binding), "use %s", cl.configstrings[CS_ITEMS+item]);
		bind = "";

		for (j=0 ; j<256 ; j++)
			if (keybindings[j] && !Q_stricmp (keybindings[j], binding))
			{
				bind = Key_KeynumToString(j);
				break;
			}

		Com_sprintf (string, sizeof(string), "%6s %3i %s", bind, cl.inventory[item],

		             cl.configstrings[CS_ITEMS+item] );

		if (item != selected)
			SetStringHighBit (string);
		else 
		{
			/* draw a blinky cursor by the selected item */
			if ( (int)(cls.realtime*10) & 1)
				re.DrawChar (x-8, y, 15);
		}

		Inv_DrawString (x, y, string);

		y += 8;
	}
}