/*

	Copyright (C) 1991-2001 and beyond by Bungie Studios, Inc.
	and the "Aleph One" developers.
 
	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.

	This license is contained in the file "COPYING",
	which is included with this source code; it is available online at
	http://www.gnu.org/licenses/gpl.html

*/

/*
 *  Crosshairs_SDL.cpp - Crosshairs display, SDL implementation
 */

#include "cseries.h"
#include "Crosshairs.h"


/*
 *  Crosshairs status
 */

static bool _Crosshairs_IsActive = false;

bool Crosshairs_IsActive(void)
{
	return _Crosshairs_IsActive;
}

bool Crosshairs_SetActive(bool NewState)
{
	return _Crosshairs_IsActive = NewState;
}


/*
 *  Draw crosshairs in center of surface
 */

bool Crosshairs_Render(SDL_Surface *s)
{
	if (!_Crosshairs_IsActive)
		return false;

	// Get the crosshair data
	CrosshairData &Crosshairs = GetCrosshairData();

	// Get color
	uint32 pixel = SDL_MapRGB(s->format, Crosshairs.Color.red >> 8, Crosshairs.Color.green >> 8, Crosshairs.Color.blue >> 8);

	// Get coordinates
	int xcen = s->w / 2 - 1, ycen = s->h / 2 - 1;

	// Left
	SDL_Rect r = {xcen - Crosshairs.FromCenter - Crosshairs.Length, ycen - Crosshairs.Thickness / 2, Crosshairs.Length, Crosshairs.Thickness};
	SDL_FillRect(s, &r, pixel);

	// Right
	r.x = xcen + Crosshairs.FromCenter;
	SDL_FillRect(s, &r, pixel);

	// Top
	r.x = xcen - Crosshairs.Thickness / 2;
	r.y = ycen - Crosshairs.FromCenter - Crosshairs.Length;
	r.w = Crosshairs.Thickness;
	r.h = Crosshairs.Length;
	SDL_FillRect(s, &r, pixel);

	// Bottom
	r.y = ycen + Crosshairs.FromCenter;
	SDL_FillRect(s, &r, pixel);
	return true;
}