/*
 * 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_DrawStringScaled(int x, int y, char *string, float factor)
{
	while (*string)
	{
		Draw_CharScaled(x, y, *string, factor);
		x += factor*8;
		string++;
	}
}

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

#define DISPLAY_ITEMS 17

// from r_main.c
extern cvar_t	*gl_hudscale;

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;

	float scale = gl_hudscale->value;

	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 - scale*256) / 2;
	y = (viddef.height - scale*240) / 2;

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

	Draw_PicScaled(x, y + scale*8, "inventory", scale);

	y += scale*24;
	x += scale*24;

	Inv_DrawStringScaled(x, y, "hotkey ### item", scale);
	Inv_DrawStringScaled(x, y + scale*8, "------ --- ----", scale);

	y += scale*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)
			{
				Draw_CharScaled(x - scale*8, y, 15, scale);
			}
		}

		Inv_DrawStringScaled(x, y, string, scale);

		y += scale*8;
	}
}