Mercurial > molko

comparison libmlk-rpg/mlk/rpg/battle-indicator.c @ 434:4e78f045e8c0

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
rpg: cleanup hierarchy
author David Demelier <markand@malikania.fr>
date Sat, 15 Oct 2022 21:24:17 +0200
parents src/libmlk-rpg/rpg/battle-indicator.c@862b15c3a3ae
children 773a082f0b91
comparison
equal deleted inserted replaced
433:862b15c3a3ae 434:4e78f045e8c0
1 /*
2 * battle-indicator.c -- drawable for rendering a hp/mp count usage
3 *
4 * Copyright (c) 2020-2022 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 #include <math.h>
21 #include <stdio.h>
22 #include <string.h>
23
24 #include <mlk/core/color.h>
25 #include <mlk/core/font.h>
26 #include <mlk/core/panic.h>
27
28 #include <mlk/ui/theme.h>
29
30 #include "battle-indicator.h"
31
32 #define THEME(bti) ((bti)->theme ? (bti)->theme : theme_default())
33 #define STEP (2)
34 #define DELAY (5)
35
36 static inline unsigned int
37 inc(int cmp, int tgt)
38 {
39 return tgt > cmp ? fmin(cmp + STEP, tgt) : fmax(cmp - STEP, tgt);
40 }
41
42 static inline int
43 colored(const struct battle_indicator *bti)
44 {
45 /* Only check r, g, b and ignore alpha. */
46 return COLOR_R(bti->cur) == COLOR_R(bti->color) &&
47 COLOR_G(bti->cur) == COLOR_G(bti->color) &&
48 COLOR_B(bti->cur) == COLOR_B(bti->color);
49 }
50
51 void
52 battle_indicator_start(struct battle_indicator *bti)
53 {
54 assert(bti);
55
56 char buf[128];
57 const struct theme *theme = THEME(bti);
58
59 snprintf(buf, sizeof (buf), "%u", bti->amount);
60
61 bti->cur = 0xffffffff;
62 bti->elapsed = 0;
63 bti->alpha = 250;
64
65 if (font_render(theme->fonts[THEME_FONT_INTERFACE], &bti->tex[0], buf, bti->cur) < 0||
66 font_render(theme->fonts[THEME_FONT_INTERFACE], &bti->tex[1], buf, 0x000000ff) < 0)
67 panic();
68 }
69
70 int
71 battle_indicator_completed(const struct battle_indicator *bti)
72 {
73 assert(battle_indicator_ok(bti));
74
75 return colored(bti) && bti->alpha == 0;
76 }
77
78 int
79 battle_indicator_ok(const struct battle_indicator *bti)
80 {
81 return bti && texture_ok(&bti->tex[0]) && texture_ok(&bti->tex[1]);
82 }
83
84 int
85 battle_indicator_update(struct battle_indicator *bti, unsigned int ticks)
86 {
87 assert(battle_indicator_ok(bti));
88
89 bti->elapsed += ticks;
90
91 if (bti->elapsed > DELAY) {
92 bti->elapsed = 0;
93
94 if (!colored(bti)) {
95 /* Update colors first. */
96 bti->cur = COLOR_HEX(
97 inc(COLOR_R(bti->cur), COLOR_R(bti->color)),
98 inc(COLOR_G(bti->cur), COLOR_G(bti->color)),
99 inc(COLOR_B(bti->cur), COLOR_B(bti->color)),
100 255
101 );
102
103 texture_set_color_mod(&bti->tex[0], bti->cur);
104 } else {
105 /* Update alpha next. */
106 bti->alpha -= 10;
107
108 texture_set_alpha_mod(&bti->tex[0], bti->alpha);
109 texture_set_alpha_mod(&bti->tex[1], bti->alpha);
110 }
111 }
112
113 return battle_indicator_completed(bti);
114 }
115
116 void
117 battle_indicator_draw(const struct battle_indicator *bti, int x, int y)
118 {
119 assert(battle_indicator_ok(bti));
120
121 texture_draw(&bti->tex[1], x + 1, y + 1);
122 texture_draw(&bti->tex[0], x, y);
123 }
124
125 void
126 battle_indicator_finish(struct battle_indicator *bti)
127 {
128 assert(bti);
129
130 texture_finish(&bti->tex[0]);
131 texture_finish(&bti->tex[1]);
132
133 memset(bti, 0, sizeof (*bti));
134 }