Mercurial > MadButterfly
annotate src/animate.c @ 129:ba581d8a4b9b
Now, tank1 can be controlled by user with keyboard
author | Thinker K.F. Li <thinker@branda.to> |
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date | Tue, 16 Sep 2008 17:35:04 +0800 |
parents | 07dc9ec71221 |
children | 6a8588df68af |
rev | line source |
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111 | 1 /*! \file |
2 * \brief Animation tools. | |
3 * | |
117 | 4 * \sa \ref ani |
111 | 5 */ |
6 /*! \page ani What is Animation? | |
41 | 7 * |
117 | 8 * Animation is a program to move, resize, rotate, ..., changing |
9 * graphics on the output screen. | |
10 * | |
11 * \image html program.png | |
12 * | |
41 | 13 * XXX: Program is a sequence of actions duration a perior. |
14 * Actions are grouped into words. A program defines | |
15 * the order and time of playing of words. A word | |
16 * defines how long to perform a set of actions. Actions | |
17 * in a word are performed concurrently. | |
45 | 18 * |
19 * Animation shapes are updated periodically. Every action | |
20 * are working with start, step, and stop 3 calls. start is | |
21 * called when start time the word, contain it, due. step is | |
22 * called periodically in duration of playing time start at | |
23 * 'start time'. When the clock run out the playing time of | |
24 * a word, it call stop of actions in the word. | |
111 | 25 * |
26 * A program is driven by a timer. Once a program is started, it registers | |
27 * with timer for periodic running. \ref mb_tman_t is timer of | |
28 * MadButterfly. The update frequence is 10fps by default, now. | |
29 * | |
117 | 30 * \section use_progm How to Use Animation Program? |
31 * Following code block creates a program with 2 words. First word is | |
32 * started immediately after the program been started. It is consisted | |
33 * for 1 second. Second word is started 1 second after the program been | |
34 * started. It is consisted for 2 seconds. There are 2 action in | |
35 * first word, they shift graphics managed by coord1 & coord2 by (50,50) and | |
36 * (-50,50) pixels, respectly. The shifting is performed incrementally | |
37 * in 1 second. Second word shifts coord1 and coord2, too. And, graphics | |
38 * managed by coord3 are hidden at end of the word. At end of code in the | |
39 * block, mb_progm_start() starts the program. 3rd argument of | |
40 * mb_progm_start() must be current wall time. | |
41 * | |
42 * \code | |
43 * progm = mb_progm_new(10, &rdman); | |
44 * | |
45 * MB_TIMEVAL_SET(&start, 0, 0); | |
46 * MB_TIMEVAL_SET(&playing, 1, 0); | |
47 * word = mb_progm_next_word(progm, &start, &playing); | |
48 * | |
49 * act = mb_shift_new(50, 50, coord1, word); | |
50 * act = mb_shift_new(-50, 50, coord2, word); | |
51 * | |
52 * MB_TIMEVAL_SET(&start, 1, 0); | |
53 * MB_TIMEVAL_SET(&playing, 2, 0); | |
54 * word = mb_progm_next_word(progm, &start, &playing); | |
55 * | |
56 * act = mb_shift_new(0, 20, coord1, word); | |
57 * act = mb_shift_new(0, -20, coord2, word); | |
58 * act = mb_visibility_new(VIS_HIDDEN, coord3, word); | |
59 * | |
60 * gettimeofday(&tv, NULL); | |
61 * MB_TIMEVAL_SET(&mbtv, tv.tv_sec, tv.tv_usec); | |
62 * mb_progm_start(progm, tman, &mbtv); | |
63 * \endcode | |
64 * | |
65 * | |
66 * \sa \ref animate.c | |
41 | 67 */ |
68 #include <stdio.h> | |
69 #include <stdlib.h> | |
70 #include <string.h> | |
71 #include "mb_types.h" | |
72 #include "redraw_man.h" | |
73 #include "mb_timer.h" | |
74 #include "animate.h" | |
75 | |
76 | |
122
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77 #define STEP_INTERVAL 90000 |
41 | 78 #define ASSERT(x) |
79 | |
80 /*! \brief A word is a set of concurrent actions in a program. | |
81 */ | |
82 struct _mb_word { | |
83 mb_timeval_t start_time; /*!< time to start the word */ | |
84 mb_timeval_t playing_time; /*!< time duration of playing */ | |
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85 mb_timeval_t abs_start, abs_stop; |
41 | 86 STAILQ(mb_action_t) actions; |
87 }; | |
88 | |
89 /*! \brief A program describe a series of actions to animate shapes. | |
51 | 90 * |
91 * first_playing is an index to one of words. It always points to | |
92 * the first of words that is playing or waiting for playing. | |
41 | 93 */ |
94 struct _mb_progm { | |
95 redraw_man_t *rdman; | |
96 | |
46 | 97 mb_timeval_t start_time; |
41 | 98 int first_playing; /*!< first playing word. */ |
99 mb_tman_t *tman; | |
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100 subject_t *complete; /*!< notify when a program is completed. */ |
41 | 101 |
102 int n_words; | |
103 int max_words; | |
104 mb_word_t words[1]; | |
105 }; | |
106 | |
119 | 107 /*! \brief Create a program object. |
108 * | |
109 * \param max_words is maximum number of words the program can hold. | |
110 * \param rdman is a rdman that show graphics manipulated by it. | |
111 */ | |
41 | 112 mb_progm_t *mb_progm_new(int max_words, redraw_man_t *rdman) { |
113 mb_progm_t *progm; | |
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114 #ifndef UNITTEST |
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115 ob_factory_t *factory; |
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116 #endif /* UNITTEST */ |
41 | 117 int i; |
118 | |
119 progm = (mb_progm_t *)malloc(sizeof(mb_progm_t) + | |
120 (sizeof(mb_word_t) * (max_words - 1))); | |
121 if(progm == NULL) | |
122 return NULL; | |
123 | |
124 progm->rdman = rdman; | |
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125 |
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126 #ifndef UNITTEST |
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127 factory = rdman_get_ob_factory(rdman); |
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128 progm->complete = subject_new(factory, progm, OBJT_PROGM); |
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129 #endif /* UNITTEST */ |
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130 |
41 | 131 progm->n_words = 0; |
132 progm->max_words = max_words; | |
133 for(i = 0; i < max_words; i++) | |
134 STAILQ_INIT(progm->words[i].actions); | |
135 return progm; | |
136 } | |
137 | |
138 void mb_progm_free(mb_progm_t *progm) { | |
139 int n_words; | |
140 mb_word_t *word; | |
141 mb_action_t *cur_act; | |
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142 #ifndef UNITTEST |
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143 ob_factory_t *factory; |
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144 #endif /* UNITTEST */ |
41 | 145 int i; |
146 | |
147 n_words = progm->n_words; | |
148 for(i = 0; i < n_words; i++) { | |
149 word = progm->words + i; | |
150 for(cur_act = STAILQ_HEAD(word->actions); | |
151 cur_act != NULL; | |
152 cur_act = STAILQ_HEAD(word->actions)) { | |
153 STAILQ_REMOVE(word->actions, mb_action_t, next, cur_act); | |
154 cur_act->free(cur_act); | |
155 } | |
156 } | |
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157 |
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158 #ifndef UNITTEST |
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159 factory = rdman_get_ob_factory(progm->rdman); |
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160 subject_free(factory, progm->complete); |
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161 #endif /* UNITTEST */ |
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162 |
41 | 163 free(progm); |
164 } | |
165 | |
166 /*! \brief Add a new word into a program. | |
167 * | |
168 * The start time of new word should bigger or equal to last one. | |
169 * The time should be specified in incremental order. | |
170 */ | |
171 mb_word_t *mb_progm_next_word(mb_progm_t *progm, | |
172 const mb_timeval_t *start, | |
173 const mb_timeval_t *playing) { | |
174 mb_word_t *word; | |
175 if(progm->n_words >= progm->max_words) | |
176 return NULL; | |
177 if(progm->n_words && | |
178 MB_TIMEVAL_LATER(&progm->words[progm->n_words - 1].start_time, start)) | |
179 return NULL; | |
180 word = progm->words + progm->n_words++; | |
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181 MB_TIMEVAL_CP(&word->start_time, start); |
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182 MB_TIMEVAL_CP(&word->playing_time, playing); |
41 | 183 return word; |
184 } | |
185 | |
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186 void mb_word_add_action(mb_word_t *word, mb_action_t *act) { |
41 | 187 STAILQ_INS_TAIL(word->actions, mb_action_t, next, act); |
188 } | |
189 | |
190 static void mb_word_start(mb_word_t *word, const mb_timeval_t *tmo, | |
191 const mb_timeval_t *now, redraw_man_t *rdman) { | |
42 | 192 mb_action_t *act; |
193 | |
194 for(act = STAILQ_HEAD(word->actions); | |
195 act != NULL; | |
196 act = STAILQ_NEXT(mb_action_t, next, act)) { | |
197 act->start(act, tmo, &word->playing_time, rdman); | |
198 } | |
41 | 199 } |
200 | |
201 static void mb_word_step(mb_word_t *word, const mb_timeval_t *tmo, | |
202 const mb_timeval_t *now, redraw_man_t *rdman) { | |
42 | 203 mb_action_t *act; |
204 | |
205 for(act = STAILQ_HEAD(word->actions); | |
206 act != NULL; | |
207 act = STAILQ_NEXT(mb_action_t, next, act)) { | |
208 act->step(act, tmo, rdman); | |
209 } | |
41 | 210 } |
211 | |
212 static void mb_word_stop(mb_word_t *word, const mb_timeval_t *tmo, | |
213 const mb_timeval_t *now, redraw_man_t *rdman) { | |
42 | 214 mb_action_t *act; |
215 | |
216 for(act = STAILQ_HEAD(word->actions); | |
217 act != NULL; | |
218 act = STAILQ_NEXT(mb_action_t, next, act)) { | |
219 act->stop(act, tmo, rdman); | |
220 } | |
41 | 221 } |
222 | |
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223 /*! \brief Time stepping for a program. |
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224 * |
46 | 225 * Any two actions in concurrent words never change the same attribute. |
226 * Start time of words in a program are specified in incremental order. | |
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227 * |
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228 * \note Program will take a big step at last monent. It is because |
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229 * mb_progm_step() running mb_word_stop() if the word being stop |
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230 * between now and next_tmo. It is not obviously if time stepping |
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231 * small. |
46 | 232 */ |
41 | 233 static void mb_progm_step(const mb_timeval_t *tmo, |
120 | 234 const mb_timeval_t *now, |
235 void *arg) { | |
41 | 236 mb_progm_t *progm = (mb_progm_t *)arg; |
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237 #ifndef UNITTEST |
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238 /*! \todo Leverage aspective programming to prevent problem of unittest. |
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239 */ |
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240 ob_factory_t *factory; |
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241 mb_progm_complete_t comp_evt; |
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242 #endif /* UNITTEST */ |
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243 mb_timeval_t next_tmo; |
41 | 244 mb_word_t *word; |
245 mb_timer_t *timer; | |
246 int i; | |
247 | |
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248 MB_TIMEVAL_SET(&next_tmo, 0, STEP_INTERVAL); |
120 | 249 MB_TIMEVAL_ADD(&next_tmo, now); |
41 | 250 |
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251 /* _step() or _stop() words that in playing. */ |
41 | 252 i = progm->first_playing; |
253 for(word = progm->words + i; | |
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254 i < progm->n_words && MB_TIMEVAL_LATER(tmo, &word->abs_start); |
41 | 255 word = progm->words + ++i) { |
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256 if(MB_TIMEVAL_LATER(tmo, &word->abs_stop)) |
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257 continue; |
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258 if(MB_TIMEVAL_LATER(&next_tmo, &word->abs_stop)) |
46 | 259 mb_word_stop(word, tmo, now, progm->rdman); |
260 else | |
41 | 261 mb_word_step(word, tmo, now, progm->rdman); |
262 } | |
263 | |
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264 /* Start words that their abs_start is in duration |
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265 * from now to timeout for next update. |
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266 */ |
41 | 267 for(word = progm->words + i; |
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268 i < progm->n_words && MB_TIMEVAL_LATER(&next_tmo, &word->abs_start); |
41 | 269 word = progm->words + ++i) { |
270 mb_word_start(word, tmo, now, progm->rdman); | |
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271 if(MB_TIMEVAL_LATER(&next_tmo, &word->abs_stop)) |
46 | 272 mb_word_stop(word, tmo, now, progm->rdman); |
41 | 273 } |
274 | |
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275 /* Find a new first_playing if any consequence words, following current |
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276 * first_playing word, are stoped. |
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277 */ |
46 | 278 i = progm->first_playing; |
279 for(word = progm->words + i; | |
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280 i < progm->n_words && MB_TIMEVAL_LATER(&next_tmo, &word->abs_stop); |
46 | 281 word = progm->words + ++i) { |
282 progm->first_playing++; | |
283 } | |
284 | |
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285 /* Setup timeout for next update. */ |
41 | 286 if(progm->first_playing < progm->n_words) { |
42 | 287 word = progm->words + progm->first_playing; |
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288 if(MB_TIMEVAL_LATER(&word->abs_start, &next_tmo)) |
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289 MB_TIMEVAL_CP(&next_tmo, &word->abs_start); |
46 | 290 timer = mb_tman_timeout(progm->tman, &next_tmo, |
291 mb_progm_step, progm); | |
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292 } else { |
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293 #ifndef UNITTEST |
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294 factory = rdman_get_ob_factory(progm->rdman); |
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295 comp_evt.event.type = EVT_PROGM_COMPLETE; |
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296 comp_evt.event.tgt = comp_evt.event.cur_tgt = progm->complete; |
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297 comp_evt.progm = progm; |
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298 subject_notify(factory, progm->complete, &comp_evt.event); |
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299 #endif /* UNITTEST */ |
41 | 300 } |
301 } | |
302 | |
303 void mb_progm_start(mb_progm_t *progm, mb_tman_t *tman, | |
304 mb_timeval_t *now) { | |
305 mb_timer_t *timer; | |
48
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306 mb_word_t *word; |
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307 int i; |
41 | 308 |
309 if(progm->n_words == 0) | |
310 return; | |
311 | |
312 progm->tman = tman; | |
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313 MB_TIMEVAL_CP(&progm->start_time, now); |
41 | 314 progm->first_playing = 0; |
315 | |
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316 for(i = 0; i < progm->n_words; i++) { |
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317 word = progm->words + i; |
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318 MB_TIMEVAL_CP(&word->abs_start, &word->start_time); |
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319 MB_TIMEVAL_ADD(&word->abs_start, now); |
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320 MB_TIMEVAL_CP(&word->abs_stop, &word->abs_start); |
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321 MB_TIMEVAL_ADD(&word->abs_stop, &word->playing_time); |
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322 } |
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323 |
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324 if(MB_TIMEVAL_EQ(&progm->words[0].abs_start, now)) { |
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325 mb_progm_step(now, now, progm); |
41 | 326 return; |
327 } | |
328 | |
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329 timer = mb_tman_timeout(tman, &progm->words[0].abs_start, |
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330 mb_progm_step, progm); |
41 | 331 ASSERT(timer != NULL); |
332 } | |
333 | |
42 | 334 void mb_progm_abort(mb_progm_t *progm, mb_tman_t *tman) { |
335 } | |
336 | |
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337 /*! \brief Return event subject for completion of a program. |
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338 */ |
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339 subject_t *mb_progm_get_complete(mb_progm_t *progm) { |
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340 return progm->complete; |
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341 } |
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342 |
50 | 343 #ifdef UNITTEST |
344 | |
345 #include <CUnit/Basic.h> | |
346 | |
347 typedef struct _mb_dummy mb_dummy_t; | |
348 | |
349 struct _mb_dummy { | |
350 mb_action_t action; | |
351 int id; | |
352 int *logidx; | |
353 int *logs; | |
354 }; | |
355 | |
356 | |
357 static void mb_dummy_start(mb_action_t *act, | |
358 const mb_timeval_t *now, | |
359 const mb_timeval_t *playing_time, | |
360 redraw_man_t *rdman) { | |
361 mb_dummy_t *dummy = (mb_dummy_t *)act; | |
362 | |
363 dummy->logs[(*dummy->logidx)++] = dummy->id; | |
364 } | |
365 | |
366 static void mb_dummy_step(mb_action_t *act, | |
367 const mb_timeval_t *now, | |
368 redraw_man_t *rdman) { | |
369 mb_dummy_t *dummy = (mb_dummy_t *)act; | |
370 | |
371 dummy->logs[(*dummy->logidx)++] = dummy->id; | |
372 } | |
373 | |
374 static void mb_dummy_stop(mb_action_t *act, | |
375 const mb_timeval_t *now, | |
376 redraw_man_t *rdman) { | |
377 mb_dummy_t *dummy = (mb_dummy_t *)act; | |
378 | |
379 dummy->logs[(*dummy->logidx)++] = dummy->id; | |
380 } | |
381 | |
382 static void mb_dummy_free(mb_action_t *act) { | |
383 free(act); | |
384 } | |
385 | |
386 mb_action_t *mb_dummy_new(int id, int *logidx, int *logs, mb_word_t *word) { | |
387 mb_dummy_t *dummy; | |
388 | |
389 dummy = (mb_dummy_t *)malloc(sizeof(mb_dummy_t)); | |
390 if(dummy == NULL) | |
391 return NULL; | |
392 | |
393 dummy->id = id; | |
394 dummy->logidx = logidx; | |
395 dummy->logs = logs; | |
396 | |
397 dummy->action.start = mb_dummy_start; | |
398 dummy->action.step = mb_dummy_step; | |
399 dummy->action.stop = mb_dummy_stop; | |
400 dummy->action.free = mb_dummy_free; | |
401 | |
402 mb_word_add_action(word, (mb_action_t *)dummy); | |
403 | |
404 return (mb_action_t *)dummy; | |
405 } | |
406 | |
407 void test_animate_words(void) { | |
408 mb_progm_t *progm; | |
409 mb_word_t *word; | |
410 mb_action_t *acts[4]; | |
411 mb_tman_t *tman; | |
412 mb_timeval_t tv1, tv2, now, tmo_after; | |
413 int logcnt = 0; | |
414 int logs[256]; | |
415 int r; | |
416 | |
417 tman = mb_tman_new(); | |
418 CU_ASSERT(tman != NULL); | |
419 | |
420 progm = mb_progm_new(3, NULL); | |
421 CU_ASSERT(progm != NULL); | |
422 | |
423 MB_TIMEVAL_SET(&tv1, 1, 0); | |
424 MB_TIMEVAL_SET(&tv2, 0, STEP_INTERVAL * 3); | |
425 word = mb_progm_next_word(progm, &tv1, &tv2); | |
426 CU_ASSERT(word != NULL); | |
427 acts[0] = mb_dummy_new(0, &logcnt, logs, word); | |
428 CU_ASSERT(acts[0] != NULL); | |
429 | |
430 MB_TIMEVAL_SET(&tv1, 1, STEP_INTERVAL * 4 / 3); | |
431 MB_TIMEVAL_SET(&tv2, 0, STEP_INTERVAL / 3); | |
432 word = mb_progm_next_word(progm, &tv1, &tv2); | |
433 CU_ASSERT(word != NULL); | |
434 acts[1] = mb_dummy_new(1, &logcnt, logs, word); | |
435 CU_ASSERT(acts[1] != NULL); | |
436 | |
437 MB_TIMEVAL_SET(&tv1, 1, STEP_INTERVAL * 2); | |
438 MB_TIMEVAL_SET(&tv2, 0, STEP_INTERVAL * 3); | |
439 word = mb_progm_next_word(progm, &tv1, &tv2); | |
440 CU_ASSERT(word != NULL); | |
441 acts[2] = mb_dummy_new(2, &logcnt, logs, word); | |
442 CU_ASSERT(acts[2] != NULL); | |
443 | |
444 MB_TIMEVAL_SET(&now, 0, 0); | |
445 mb_progm_start(progm, tman, &now); | |
446 | |
447 r = mb_tman_next_timeout(tman, &now, &tmo_after); | |
448 CU_ASSERT(r == 0); | |
449 CU_ASSERT(MB_TIMEVAL_SEC(&tmo_after) == 1 && | |
450 MB_TIMEVAL_USEC(&tmo_after) == 0); | |
451 | |
452 /* 1.0s */ | |
453 MB_TIMEVAL_ADD(&now, &tmo_after); | |
454 mb_tman_handle_timeout(tman, &now); | |
455 CU_ASSERT(logcnt == 1); | |
456 | |
457 r = mb_tman_next_timeout(tman, &now, &tmo_after); | |
458 CU_ASSERT(r == 0); | |
459 CU_ASSERT(MB_TIMEVAL_SEC(&tmo_after) == 0 && | |
460 MB_TIMEVAL_USEC(&tmo_after) == STEP_INTERVAL); | |
461 | |
462 /* 1.1s */ | |
463 MB_TIMEVAL_ADD(&now, &tmo_after); | |
464 mb_tman_handle_timeout(tman, &now); | |
465 CU_ASSERT(logcnt == 4); | |
466 | |
467 r = mb_tman_next_timeout(tman, &now, &tmo_after); | |
468 CU_ASSERT(r == 0); | |
469 CU_ASSERT(MB_TIMEVAL_SEC(&tmo_after) == 0 && | |
470 MB_TIMEVAL_USEC(&tmo_after) == STEP_INTERVAL); | |
471 | |
472 /* 1.2s */ | |
473 MB_TIMEVAL_ADD(&now, &tmo_after); | |
474 mb_tman_handle_timeout(tman, &now); | |
475 CU_ASSERT(logcnt == 6); | |
476 | |
477 r = mb_tman_next_timeout(tman, &now, &tmo_after); | |
478 CU_ASSERT(r == 0); | |
479 CU_ASSERT(MB_TIMEVAL_SEC(&tmo_after) == 0 && | |
480 MB_TIMEVAL_USEC(&tmo_after) == STEP_INTERVAL); | |
481 | |
482 /* 1.3s */ | |
483 MB_TIMEVAL_ADD(&now, &tmo_after); | |
484 mb_tman_handle_timeout(tman, &now); | |
485 CU_ASSERT(logcnt == 8); | |
486 | |
487 r = mb_tman_next_timeout(tman, &now, &tmo_after); | |
488 CU_ASSERT(r == 0); | |
489 CU_ASSERT(MB_TIMEVAL_SEC(&tmo_after) == 0 && | |
490 MB_TIMEVAL_USEC(&tmo_after) == STEP_INTERVAL); | |
491 | |
492 /* 1.4s */ | |
493 MB_TIMEVAL_ADD(&now, &tmo_after); | |
494 mb_tman_handle_timeout(tman, &now); | |
495 CU_ASSERT(logcnt == 9); | |
496 | |
497 r = mb_tman_next_timeout(tman, &now, &tmo_after); | |
498 CU_ASSERT(r == 0); | |
499 CU_ASSERT(MB_TIMEVAL_SEC(&tmo_after) == 0 && | |
500 MB_TIMEVAL_USEC(&tmo_after) == STEP_INTERVAL); | |
501 | |
502 /* 1.5s */ | |
503 MB_TIMEVAL_ADD(&now, &tmo_after); | |
504 mb_tman_handle_timeout(tman, &now); | |
505 CU_ASSERT(logcnt == 10); | |
506 | |
507 r = mb_tman_next_timeout(tman, &now, &tmo_after); | |
508 CU_ASSERT(r == -1); | |
509 | |
510 mb_progm_free(progm); | |
511 mb_tman_free(tman); | |
512 } | |
513 | |
514 CU_pSuite get_animate_suite(void) { | |
515 CU_pSuite suite; | |
516 | |
517 suite = CU_add_suite("Suite_animate", NULL, NULL); | |
518 if(suite == NULL) | |
519 return NULL; | |
520 | |
521 CU_ADD_TEST(suite, test_animate_words); | |
522 | |
523 return suite; | |
524 } | |
525 | |
526 #endif /* UNITTEST */ |