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core: rework actions and a bit of drawables, closes #2492 In the effort of having as less as possible memory allocation in libcore, the usage of actions and drawable no longer copy the original source parameter to let user pass a heap allocated variable or a static storage one. Update predefined drawable and actions to match these new needs.
author David Demelier <markand@malikania.fr>
date Tue, 13 Oct 2020 09:38:44 +0200
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children 8b035f7f978a
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135:eadfed7674ac 136:30b68089ae70
1 /*
2 * example-action.c -- example on how to use automatic drawables
3 *
4 * Copyright (c) 2020 David Demelier <markand@malikania.fr>
5 *
6 * Permission to use, copy, modify, and/or distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19 #include <assert.h>
20
21 #include <core/action.h>
22 #include <core/clock.h>
23 #include <core/event.h>
24 #include <core/image.h>
25 #include <core/maths.h>
26 #include <core/message.h>
27 #include <core/painter.h>
28 #include <core/panic.h>
29 #include <core/script.h>
30 #include <core/sprite.h>
31 #include <core/sys.h>
32 #include <core/texture.h>
33 #include <core/theme.h>
34 #include <core/util.h>
35 #include <core/window.h>
36
37 #include <assets/sprites/chest.h>
38 #include <assets/sprites/people.h>
39
40 #define W 1280
41 #define H 720
42
43 static struct action_stack stack;
44
45 /*
46 * Event object for the chest to click on.
47 */
48 static struct {
49 struct message msg;
50 struct action msg_act;
51 int x;
52 int y;
53 bool opened;
54 struct texture image;
55 struct sprite sprite;
56 struct action event;
57 } chest = {
58 .msg = {
59 .text = {
60 "100000 pièces.",
61 "Te voilà riche sale file de crevette."
62 }
63 }
64 };
65
66 /*
67 * Event object for the guide who ask dialog with you.
68 *
69 * It is a script spawned upon click like this.
70 *
71 * [guide.event]
72 * | spawn
73 * (on click)------------------->[message 1]
74 * v
75 * [message 2]
76 * v
77 * [question 3]
78 * spawn v
79 * [response]<---------------------[check result]
80 * v
81 * [message 4/5]
82 */
83 static struct {
84 struct {
85 struct message msg;
86 struct action act;
87 } msgs[5];
88
89 /* This is the sprite and action to click on. */
90 int x;
91 int y;
92 struct texture image;
93 struct sprite sprite;
94 struct action event;
95
96 /* This is the event for the response. */
97 struct action response;
98
99 struct script script;
100 struct action script_act;
101 } guide = {
102 .msgs = {
103 {
104 .msg = {
105 .text = {
106 "Bienvenue dans ce monde Molko."
107 }
108 },
109 },
110 {
111 .msg = {
112 .text = {
113 "Penses tu vraiment pouvoir me battre ?"
114 }
115 }
116 },
117 {
118 .msg = {
119 .flags = MESSAGE_QUESTION,
120 .text = {
121 "Non j'ai la trouille.",
122 "Bien sûr, je suis la légende."
123 }
124 }
125 },
126
127 /* In case of NO. */
128 {
129 .msg = {
130 .text = {
131 "Poule mouillée."
132 }
133 }
134 },
135
136 /* In case of YES. */
137 {
138 .msg = {
139 .text = {
140 "Prépare toi à souffrir."
141 }
142 }
143 }
144 }
145 };
146
147 static bool
148 guide_response_update(struct action *act, unsigned int ticks)
149 {
150 /* Immediately return to get access to end. */
151 (void)act;
152 (void)ticks;
153
154 return true;
155 }
156
157 static void
158 guide_response_end(struct action *act)
159 {
160 (void)act;
161
162 /* We add a final response depending on the result. */
163 const int index = guide.msgs[2].msg.index + 3;
164
165 message_action(&guide.msgs[index].msg, &guide.msgs[index].act);
166 action_stack_add(&stack, &guide.msgs[index].act);
167 }
168
169 static bool
170 guide_running(void)
171 {
172 return guide.script.actionsz > 0;
173 }
174
175 static void
176 guide_popup(void)
177 {
178 /* Prepare the script with first 3 messages. */
179 for (size_t i = 0; i < 3; ++i) {
180 message_action(&guide.msgs[i].msg, &guide.msgs[i].act);
181 script_append(&guide.script, &guide.msgs[i].act);
182 }
183
184 /* Reset the message index. */
185 guide.msgs[2].msg.index = 0;
186
187 /* This is final action that analyze user input. */
188 guide.response.update = guide_response_update;
189 guide.response.end = guide_response_end;
190 script_append(&guide.script, &guide.response);
191
192 script_action(&guide.script, &guide.script_act);
193 action_stack_add(&stack, &guide.script_act);
194 }
195
196 static void
197 guide_handle(struct action *act, const union event *ev)
198 {
199 (void)act;
200
201 if (guide_running())
202 return;
203
204 switch (ev->type) {
205 case EVENT_CLICKDOWN:
206 if (maths_is_boxed(guide.x, guide.y,
207 guide.sprite.cellw, guide.sprite.cellh,
208 ev->click.x, ev->click.y))
209 guide_popup();
210 break;
211 default:
212 break;
213 }
214 }
215
216 static void
217 guide_draw(struct action *act)
218 {
219 (void)act;
220
221 sprite_draw(&guide.sprite, 0, 0, guide.x, guide.y);
222 }
223
224 static void
225 guide_init(void)
226 {
227 if (!image_openmem(&guide.image, sprites_people, sizeof (sprites_people)))
228 panic();
229
230 sprite_init(&guide.sprite, &guide.image, 48, 48);
231
232 /* This is the global guide action. */
233 guide.event.handle = guide_handle;
234 guide.event.draw = guide_draw;
235 guide.x = 200;
236 guide.y = 200;
237 }
238
239 static void
240 chest_handle(struct action *act, const union event *ev)
241 {
242 (void)act;
243
244 if (chest.opened)
245 return;
246
247 switch (ev->type) {
248 case EVENT_CLICKDOWN:
249 if (maths_is_boxed(chest.x, chest.y, chest.sprite.cellw, chest.sprite.cellh,
250 ev->click.x, ev->click.y)) {
251 chest.opened = true;
252 message_action(&chest.msg, &chest.msg_act);
253 action_stack_add(&stack, &chest.msg_act);
254 }
255 default:
256 break;
257 }
258 }
259
260 static void
261 chest_draw(struct action *act)
262 {
263 (void)act;
264
265 const int row = chest.opened ? 3 : 0;
266
267 sprite_draw(&chest.sprite, row, 0, chest.x, chest.y);
268 }
269
270 static void
271 chest_init(void)
272 {
273 if (!image_openmem(&chest.image, sprites_chest, sizeof (sprites_chest)))
274 panic();
275
276 sprite_init(&chest.sprite, &chest.image, 32, 32);
277
278 chest.x = 100;
279 chest.y = 100;
280 chest.event.handle = chest_handle;
281 chest.event.draw = chest_draw;
282 }
283
284 static void
285 init(void)
286 {
287 if (!sys_init() ||
288 !window_init("Example - Action", W, H) ||
289 !theme_init())
290 panic();
291
292 guide_init();
293 chest_init();
294 }
295
296 static void
297 run(void)
298 {
299 struct clock clock = {0};
300
301 clock_start(&clock);
302 action_stack_add(&stack, &chest.event);
303 action_stack_add(&stack, &guide.event);
304
305 for (;;) {
306 unsigned int elapsed = clock_elapsed(&clock);
307
308 clock_start(&clock);
309
310 for (union event ev; event_poll(&ev); ) {
311 switch (ev.type) {
312 case EVENT_QUIT:
313 return;
314 default:
315 action_stack_handle(&stack, &ev);
316 break;
317 }
318 }
319
320 painter_set_color(0xffffffff);
321 painter_clear();
322 action_stack_update(&stack, elapsed);
323 action_stack_draw(&stack);
324 painter_present();
325
326 if ((elapsed = clock_elapsed(&clock)) < 20)
327 delay(20 - elapsed);
328 }
329 }
330
331 static void
332 quit(void)
333 {
334 theme_finish();
335 window_finish();
336 sys_finish();
337 }
338
339 int
340 main(int argc, char **argv)
341 {
342 (void)argc;
343 (void)argv;
344
345 init();
346 run();
347 quit();
348
349 return 0;
350 }