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#include <stdlib.h>
#include <string.h>
#include "v3dtex.h"
#include "obj.h"
#include "objutils.h"
#include "smoke.h"
int SmokeCreate(
sar_scene_struct *scene,
sar_object_struct ***ptr, int *total,
sar_smoke_type smoke_type,
const sar_position_struct *pos,
const sar_position_struct *respawn_offset,
float radius_start, /* In meters */
float radius_max, /* In meters */
float radius_rate, /* In meters per second */
int hide_at_max,
int total_units, /* Max smoke units in trail */
time_t respawn_int, /* In ms */
const char *tex_name,
int ref_object, /* Can be -1 for none */
time_t life_span
);
int SmokeCreateSparks(
sar_scene_struct *scene,
sar_object_struct ***ptr, int *total,
const sar_position_struct *pos,
const sar_position_struct *respawn_offset,
float sparks_distance, /* How far should sparks fly */
int ref_object,
time_t life_span
);
#define ATOI(s) (((s) != NULL) ? atoi(s) : 0)
#define ATOL(s) (((s) != NULL) ? atol(s) : 0)
#define ATOF(s) (((s) != NULL) ? atof(s) : 0.0f)
#define STRDUP(s) (((s) != NULL) ? strdup(s) : NULL)
#define MAX(a,b) (((a) > (b)) ? (a) : (b))
#define MIN(a,b) (((a) < (b)) ? (a) : (b))
#define CLIP(a,l,h) (MIN(MAX((a),(l)),(h)))
#define STRLEN(s) (((s) != NULL) ? strlen(s) : 0)
#define STRISEMPTY(s) (((s) != NULL) ? (*(s) == '\0') : 1)
#define RADTODEG(r) ((r) * 180.0 / PI)
#define DEGTORAD(d) ((d) * PI / 180.0)
/*
* Creates a new Smoke Trail.
*/
int SmokeCreate(
sar_scene_struct *scene,
sar_object_struct ***ptr, int *total,
sar_smoke_type smoke_type,
const sar_position_struct *pos,
const sar_position_struct *respawn_offset,
float radius_start, /* In meters */
float radius_max, /* In meters */
float radius_rate, /* In meters per cycle */
int hide_at_max,
int total_units, /* Max smoke units in trail */
time_t respawn_int, /* In ms */
const char *tex_name,
int ref_object, /* Can be -1 for none */
time_t life_span /* In ms */
)
{
int i, obj_num;
sar_object_struct *obj_ptr;
sar_object_smoke_struct *smoke;
if((scene == NULL) || (pos == NULL))
return(-1);
/* Create a new Smoke Trail */
obj_num = SARObjNew(
scene, ptr, total,
SAR_OBJ_TYPE_SMOKE
);
if(obj_num < 0)
return(-1);
obj_ptr = (*ptr)[obj_num];
if(obj_ptr == NULL)
return(-1);
smoke = SAR_OBJ_GET_SMOKE(obj_ptr);
if(smoke == NULL)
return(-1);
/* Need to automatically calculate radius_rate? */
if(radius_rate < 0.0f)
{
float dt = (float)(total_units * respawn_int / 1000.0f);
if(dt > 0.0f)
radius_rate = (float)((radius_max - radius_start) / dt);
else
radius_rate = 0.0f;
}
/* Begin setting values */
/* Position */
memcpy(
&obj_ptr->pos,
pos,
sizeof(sar_position_struct)
);
/* Set visible range based on maximum size */
if(radius_max >= 400.0f)
obj_ptr->range = (float)SFMMilesToMeters(18.0);
else if(radius_max >= 200.0f)
obj_ptr->range = (float)SFMMilesToMeters(16.0);
else if(radius_max >= 100.0f)
obj_ptr->range = (float)SFMMilesToMeters(13.0);
else
obj_ptr->range = (float)SFMMilesToMeters(10.0);
SARObjAddContactBoundsSpherical(
obj_ptr,
0, 0, /* Crash flags and crash type */
radius_start /* Use starting radius size as contact bounds */
);
obj_ptr->life_span = life_span;
obj_ptr->temperature = 0.25;
/* Set smoke trail type to smoke */
smoke->type = smoke_type;
/* Set smoke trail specific values */
if(respawn_offset != NULL)
memcpy(
&smoke->respawn_offset,
respawn_offset,
sizeof(sar_position_struct)
);
smoke->radius_start = radius_start;
smoke->radius_max = radius_max;
smoke->radius_rate = radius_rate;
smoke->hide_at_max = hide_at_max;
smoke->delete_when_no_units = 0;
smoke->respawn_int = respawn_int;
smoke->respawn_next = 0l;
smoke->tex_num = SARGetTextureRefNumberByName(
scene, tex_name
);
smoke->ref_object = ref_object;
smoke->total_units = total_units;
if(smoke->total_units > 0)
{
smoke->unit = (sar_object_smoke_unit_struct *)realloc(
smoke->unit,
smoke->total_units * sizeof(sar_object_smoke_unit_struct)
);
if(smoke->unit == NULL)
{
smoke->total_units = total_units = 0;
}
}
for(i = 0; i < smoke->total_units; i++)
{
sar_object_smoke_unit_struct *smoke_unit_ptr = &smoke->unit[i];
memset(&smoke_unit_ptr->pos, 0x00, sizeof(sar_position_struct));
smoke_unit_ptr->radius = 0.0f;
smoke_unit_ptr->visibility = 0.0f;
}
return(obj_num);
}
/*
* Creates a new Sparks.
*/
int SmokeCreateSparks(
sar_scene_struct *scene,
sar_object_struct ***ptr, int *total,
const sar_position_struct *pos,
const sar_position_struct *respawn_offset,
float sparks_distance, /* How far should sparks fly */
int ref_object,
time_t life_span
)
{
const time_t respawn_int = 1000l;
int obj_num;
sar_object_struct *obj_ptr;
sar_object_smoke_struct *smoke;
if((scene == NULL) || (pos == NULL))
return(-1);
/* Note about respawn interval: The respawning of sparks per
* respawn interval is a group of sparks (instead of just one
* unit like the smoke puffs)
*/
/* Create a new Sparks */
obj_num = SmokeCreate(
scene, ptr, total,
SAR_SMOKE_TYPE_SPARKS,
pos, respawn_offset,
1.0f, /* Radius start (ignored for sparks) */
sparks_distance, /* Radius max (how far sparks should fly) */
1.0f, /* Radius growth rate in meters per cycle
* (ignored for sparks) */
0, /* Do not hide at max */
20, /* Total units */
respawn_int, /* Respawn interval in ms (*) */
NULL, /* No texture */
ref_object,
life_span
);
if(obj_num < 0)
return(-1);
obj_ptr = (*ptr)[obj_num];
if(obj_ptr == NULL)
return(-1);
smoke = SAR_OBJ_GET_SMOKE(obj_ptr);
if(smoke == NULL)
return(-1);
return(obj_num);
}
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