/*****************************************************************************
The Dark Mod GPL Source Code

This file is part of the The Dark Mod Source Code, originally based
on the Doom 3 GPL Source Code as published in 2011.

The Dark Mod 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 3 of the License,
or (at your option) any later version. For details, see LICENSE.TXT.

Project: The Dark Mod (http://www.thedarkmod.com/)

******************************************************************************/

#include "precompiled.h"
#pragma hdrstop



#include "qe3.h"

#define	MAX_POINTFILE	8192
static idVec3	s_pointvecs[MAX_POINTFILE];
static int		s_num_points, s_check_point;

void Pointfile_Delete (void)
{
	char	name[1024];

	strcpy (name, currentmap);
	StripExtension (name);
	strcat (name, ".lin");

	remove(name);
}

// advance camera to next point
void Pointfile_Next (void)
{
	idVec3	dir;

	if (s_check_point >= s_num_points-2)
	{
		Sys_Status ("End of pointfile", 0);
		return;
	}
	s_check_point++;
	VectorCopy (s_pointvecs[s_check_point], g_pParentWnd->GetCamera()->Camera().origin);
	VectorCopy (s_pointvecs[s_check_point], g_pParentWnd->GetXYWnd()->GetOrigin());
	VectorSubtract (s_pointvecs[s_check_point+1], g_pParentWnd->GetCamera()->Camera().origin, dir);
	dir.Normalize();
	g_pParentWnd->GetCamera()->Camera().angles[1] = atan2 (dir[1], dir[0])*180/3.14159;
	g_pParentWnd->GetCamera()->Camera().angles[0] = asin (dir[2])*180/3.14159;

	Sys_UpdateWindows (W_ALL);
}

// advance camera to previous point
void Pointfile_Prev (void)
{
	idVec3	dir;

	if ( s_check_point == 0)
	{
		Sys_Status ("Start of pointfile", 0);
		return;
	}
	s_check_point--;
	VectorCopy (s_pointvecs[s_check_point], g_pParentWnd->GetCamera()->Camera().origin);
	VectorCopy (s_pointvecs[s_check_point], g_pParentWnd->GetXYWnd()->GetOrigin());
	VectorSubtract (s_pointvecs[s_check_point+1], g_pParentWnd->GetCamera()->Camera().origin, dir);
	dir.Normalize();
	g_pParentWnd->GetCamera()->Camera().angles[1] = atan2 (dir[1], dir[0])*180/3.14159;
	g_pParentWnd->GetCamera()->Camera().angles[0] = asin (dir[2])*180/3.14159;

	Sys_UpdateWindows (W_ALL);
}

void WINAPI Pointfile_Check (void)
{
	char	name[1024];
	FILE	*f;
	idVec3	v;

	strcpy (name, currentmap);
	StripExtension (name);
	strcat (name, ".lin");

	f = fopen (name, "r");
	if (!f)
		return;

	common->Printf ("Reading pointfile %s\n", name);

	if (!g_qeglobals.d_pointfile_display_list)
		g_qeglobals.d_pointfile_display_list = qglGenLists(1);

	s_num_points = 0;
	qglNewList (g_qeglobals.d_pointfile_display_list,  GL_COMPILE);
	qglColor3f (1, 0, 0);
	qglDisable(GL_TEXTURE_2D);
	qglDisable(GL_TEXTURE_1D);
	qglLineWidth (2);
	qglBegin(GL_LINE_STRIP);

	do
	{
		if (fscanf (f, "%f %f %f\n", &v[0], &v[1], &v[2]) != 3)
			break;
		if (s_num_points < MAX_POINTFILE)
		{
			VectorCopy (v, s_pointvecs[s_num_points]);
			s_num_points++;
		}
		qglVertex3fv( v.ToFloatPtr() );
	} while (1);
	qglEnd();
	qglLineWidth (0.5);
	qglEndList ();

	s_check_point = 0;
	fclose (f);
	//Pointfile_Next ();
}

void Pointfile_Draw( void )
{
	int i;

	qglColor3f( 1.0F, 0.0F, 0.0F );
	qglDisable(GL_TEXTURE_2D);
	qglDisable(GL_TEXTURE_1D);
	qglLineWidth (2);
	qglBegin(GL_LINE_STRIP);
	for ( i = 0; i < s_num_points; i++ )
	{
		qglVertex3fv( s_pointvecs[i].ToFloatPtr() );
	}
	qglEnd();
	qglLineWidth( 0.5 );
}

void Pointfile_Clear (void)
{
	if (!g_qeglobals.d_pointfile_display_list)
		return;

	qglDeleteLists (g_qeglobals.d_pointfile_display_list, 1);
	g_qeglobals.d_pointfile_display_list = 0;
	Sys_UpdateWindows (W_ALL);
}