File: smoke.c

package info (click to toggle)
searchandrescue 0.8.2-10
  • links: PTS
  • area: main
  • in suites: lenny
  • size: 4,656 kB
  • ctags: 6,111
  • sloc: ansic: 89,072; cpp: 7,691; sh: 90; makefile: 80
file content (245 lines) | stat: -rw-r--r-- 5,858 bytes parent folder | download | duplicates (6)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
#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);
}