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annotate libmlk-rpg/rpg/teleport.c @ 258:f978fa0137ce

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extern: provide libcompat
author David Demelier <markand@malikania.fr>
date Sat, 05 Dec 2020 15:57:02 +0100
parents 71b3b7036de7
children
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ddfe0a211169 rpg: experiment with map teleport
David Demelier <markand@malikania.fr>
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1 /*
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2 * teleport.c -- animate and teleport
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3 *
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4 * Copyright (c) 2020 David Demelier <markand@malikania.fr>
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5 *
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6 * Permission to use, copy, modify, and/or distribute this software for any
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7 * purpose with or without fee is hereby granted, provided that the above
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8 * copyright notice and this permission notice appear in all copies.
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9 *
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10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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17 */
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18
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19 #include <assert.h>
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20 #include <string.h>
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21
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22 #include <core/action.h>
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23 #include <core/game.h>
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24 #include <core/painter.h>
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25 #include <core/panic.h>
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26 #include <core/window.h>
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27
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28 #include "map.h"
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29 #include "teleport.h"
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30
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31 static bool
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32 update(struct action *act, unsigned int ticks)
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33 {
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34 return teleport_update(act->data, ticks);
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35 }
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36
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37 static void
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38 draw(struct action *act)
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39 {
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40 teleport_draw(act->data);
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41 }
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42
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43 static void
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44 finish(struct action *act)
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45 {
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46 teleport_finish(act->data);
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47 }
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48
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49 void
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50 teleport_start(struct teleport *tp)
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51 {
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52 assert(tp);
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53
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54 if (!texture_new(&tp->fade, window.w, window.h))
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55 panic();
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56
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57 texture_set_blend_mode(&tp->fade, TEXTURE_BLEND_BLEND);
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58
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59 PAINTER_BEGIN(&tp->fade);
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60 painter_set_color(0x000000ff);
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61 painter_clear();
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62 PAINTER_END();
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63
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64 tp->elapsed = tp->alpha = 0;
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65 }
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66
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67 bool
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68 teleport_update(struct teleport *tp, unsigned int ticks)
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69 {
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70 assert(tp);
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71
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72 tp->elapsed += ticks;
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73
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74 if (tp->elapsed >= 10) {
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75 if (tp->alpha >= 255) {
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76 game_switch(tp->state, false);
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77 return true;
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78 }
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79
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80 tp->elapsed = 0;
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81 tp->alpha += 5;
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82 }
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83
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84 return false;
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85 }
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86
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87 void
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88 teleport_draw(struct teleport *tp)
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89 {
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90 texture_set_alpha_mod(&tp->fade, tp->alpha);
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91 texture_draw(&tp->fade, 0, 0);
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92 }
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93
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94 void
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95 teleport_finish(struct teleport *tp)
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96 {
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97 assert(tp);
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98
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99 texture_finish(&tp->fade);
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100 }
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101
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102 void
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103 teleport_action(struct teleport *tp, struct action *act)
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104 {
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105 assert(tp && tp->state);
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106 assert(act);
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107
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108 memset(act, 0, sizeof (*act));
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109 act->data = tp;
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110 act->update = update;
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111 act->draw = draw;
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112 act->finish = finish;
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113
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114 teleport_start(tp);
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115 }