mirror of
https://git.do.srb2.org/STJr/SRB2.git
synced 2024-11-17 18:21:10 +00:00
100 lines
2.1 KiB
C
100 lines
2.1 KiB
C
// SONIC ROBO BLAST 2
|
|
//-----------------------------------------------------------------------------
|
|
// Copyright (C) 1993-1996 by id Software, Inc.
|
|
// Copyright (C) 1998-2000 by DooM Legacy Team.
|
|
// Copyright (C) 1999-2016 by Sonic Team Junior.
|
|
//
|
|
// This program is free software distributed under the
|
|
// terms of the GNU General Public License, version 2.
|
|
// See the 'LICENSE' file for more details.
|
|
//-----------------------------------------------------------------------------
|
|
/// \file m_bbox.c
|
|
/// \brief bounding boxes
|
|
|
|
#include "doomtype.h"
|
|
#include "m_bbox.h"
|
|
/** \brief The M_ClearBox function
|
|
|
|
\param box a fixed_t array of 4 to be cleaned
|
|
|
|
\return void
|
|
|
|
|
|
*/
|
|
|
|
void M_ClearBox(fixed_t *box)
|
|
{
|
|
box[BOXTOP] = box[BOXRIGHT] = INT32_MIN;
|
|
box[BOXBOTTOM] = box[BOXLEFT] = INT32_MAX;
|
|
}
|
|
/** \brief The M_AddToBox function
|
|
|
|
\param box a fixed_t array of 4 to be added with
|
|
\param x x of box
|
|
\param y y of box
|
|
|
|
\return void
|
|
|
|
|
|
*/
|
|
|
|
void M_AddToBox(fixed_t *box, fixed_t x, fixed_t y)
|
|
{
|
|
if (x < box[BOXLEFT])
|
|
box[BOXLEFT] = x;
|
|
if (x > box[BOXRIGHT])
|
|
box[BOXRIGHT] = x;
|
|
|
|
if (y < box[BOXBOTTOM])
|
|
box[BOXBOTTOM] = y;
|
|
if (y > box[BOXTOP])
|
|
box[BOXTOP] = y;
|
|
}
|
|
/** \brief The M_PointInBox function
|
|
|
|
\param box a fixed_t array of 4 to be checked with
|
|
\param x x of box
|
|
\param y y of box
|
|
|
|
\return if it's in the box
|
|
|
|
|
|
*/
|
|
|
|
boolean M_PointInBox(fixed_t *box, fixed_t x, fixed_t y)
|
|
{
|
|
if (x < box[BOXLEFT])
|
|
return false;
|
|
if (x > box[BOXRIGHT])
|
|
return false;
|
|
if (y < box[BOXBOTTOM])
|
|
return false;
|
|
if (y > box[BOXTOP])
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
/** \brief The M_CircleTouchBox function
|
|
|
|
\param box a parameter of type fixed_t *
|
|
\param circlex a parameter of type fixed_t
|
|
\param circley a parameter of type fixed_t
|
|
\param circleradius a parameter of type fixed_t
|
|
|
|
\return boolean
|
|
|
|
|
|
*/
|
|
|
|
boolean M_CircleTouchBox(fixed_t *box, fixed_t circlex, fixed_t circley, fixed_t circleradius)
|
|
{
|
|
if (box[BOXLEFT] - circleradius > circlex)
|
|
return false;
|
|
if (box[BOXRIGHT] + circleradius < circlex)
|
|
return false;
|
|
if (box[BOXBOTTOM] - circleradius > circley)
|
|
return false;
|
|
if (box[BOXTOP] + circleradius < circley)
|
|
return false;
|
|
return true;
|
|
}
|