/*
 * Portions of this file are copyright Rebirth contributors and licensed as
 * described in COPYING.txt.
 * Portions of this file are copyright Parallax Software and licensed
 * according to the Parallax license below.
 * See COPYING.txt for license details.

THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
SOFTWARE CORPORATION ("PARALLAX").  PARALLAX, IN DISTRIBUTING THE CODE TO
END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
IN USING, DISPLAYING,  AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
FREE PURPOSES.  IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES.  THE END-USER UNDERSTANDS
AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
COPYRIGHT 1993-1999 PARALLAX SOFTWARE CORPORATION.  ALL RIGHTS RESERVED.
*/

/*
 *
 * Header for fireball.c
 *
 */


#ifndef _FIREBALL_H
#define _FIREBALL_H

#include <physfs.h>

#ifdef __cplusplus

struct object;
struct objptridx_t;
struct vobjptridx_t;
struct vms_vector;

// explosion types
#define ET_SPARKS       0   //little sparks, like when laser hits wall
#define ET_MULTI_START  1   //first part of multi-part explosion
#define ET_MULTI_SECOND 2   //second part of multi-part explosion

struct expl_wall
{
	segnum_t segnum;
	int sidenum;
	fix time;
};

// data for exploding walls (such as hostage door)

#define MAX_EXPLODING_WALLS     10
extern expl_wall expl_wall_list[MAX_EXPLODING_WALLS];

objptridx_t object_create_explosion(segnum_t segnum, vms_vector *position, fix size, int vclip_type);
void object_create_muzzle_flash(segnum_t segnum, vms_vector *position, fix size, int vclip_type);

objptridx_t object_create_badass_explosion(objptridx_t objp, segnum_t segnum,
		vms_vector *position, fix size, int vclip_type,
		fix maxdamage, fix maxdistance, fix maxforce, objptridx_t parent);

// blows up a badass weapon, creating the badass explosion
// return the explosion object
void explode_badass_weapon(vobjptridx_t obj,vms_vector *pos);

// blows up the player with a badass explosion
void explode_badass_player(vobjptridx_t obj);

void explode_object(vobjptridx_t obj,fix delay_time);
void do_explosion_sequence(object *obj);
void do_debris_frame(vobjptridx_t obj);      // deal with debris for this frame

/* Cannot use objptridx_t since endlevel external_explosion is outside
 * Objects[].
 */
void draw_fireball(object *obj);

void explode_wall(segnum_t segnum, int sidenum);
void do_exploding_wall_frame(void);
void init_exploding_walls(void);
extern void maybe_drop_net_powerup(int powerup_type);
extern void maybe_replace_powerup_with_energy(object *del_obj);

extern int get_explosion_vclip(object *obj, int stage);

#if defined(DXX_BUILD_DESCENT_II)
objptridx_t drop_powerup(int type, int id, int num, vms_vector *init_vel, vms_vector *pos, segnum_t segnum);

// creates afterburner blobs behind the specified object
void drop_afterburner_blobs(object *obj, int count, fix size_scale, fix lifetime);

/*
 * reads n expl_wall structs from a PHYSFS_file and swaps if specified
 */
extern void expl_wall_read_n_swap(expl_wall *ew, int n, int swap, PHYSFS_file *fp);
extern fix	Flash_effect;
#endif

int pick_connected_segment(struct object *objp, int max_depth);

#endif

#endif /* _FIREBALL_H */