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annotate libmlk-adventure/adventure/actions/teleport.c @ 259:16be1ad3ddba

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adventure: start working on maps and teleport
author David Demelier <markand@malikania.fr>
date Sun, 06 Dec 2020 11:22:03 +0100
parents
children 60a214ec1ab4
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16be1ad3ddba adventure: start working on maps and teleport
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1 /*
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2 * teleport.c -- teleport contact
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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 <compat.h>
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20
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21 #include <assert.h>
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22 #include <stdlib.h>
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23 #include <string.h>
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24
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25 #include <core/alloc.h>
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26 #include <core/maths.h>
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27 #include <core/painter.h>
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28 #include <core/panic.h>
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29 #include <core/texture.h>
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30 #include <core/window.h>
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31
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32 #include <rpg/map.h>
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33
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34 #include "molko.h"
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35 #include "teleport.h"
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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 struct teleport *tp = act->data;
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41
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42 texture_set_blend_mode(&tp->overlay, TEXTURE_BLEND_BLEND);
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43 texture_set_alpha_mod(&tp->overlay, tp->alpha);
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44
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45 PAINTER_BEGIN(&tp->overlay);
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46 painter_set_color(0x000000ff);
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47 painter_clear();
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48 PAINTER_END();
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49
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50 texture_draw(&tp->overlay, 0, 0);
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51 }
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52
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53 static bool
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54 update_fadeout(struct action *act, unsigned int ticks)
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55 {
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56 struct teleport *tp = act->data;
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57
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58 tp->elapsed += ticks;
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59
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60 if (tp->elapsed >= 10) {
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61 if (tp->alpha >= 255) {
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62 molko_teleport("assets/maps/map-world.map", tp->origin_x, tp->origin_y);
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63 return true;
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64 }
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65
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66 tp->elapsed = 0;
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67 tp->alpha += 5;
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68 }
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69
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70 return false;
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71 }
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72
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73 static bool
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74 update_touch(struct action *act, unsigned int ticks)
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75 {
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76 (void)ticks;
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77
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78 struct teleport *tp = act->data;
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79 const int x = tp->x - tp->map->player_sprite->cellw;
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80 const int y = tp->y - tp->map->player_sprite->cellh;
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81 const unsigned int w = tp->w + tp->map->player_sprite->cellw;
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82 const unsigned int h = tp->h + tp->map->player_sprite->cellh;
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83
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84 if (maths_is_boxed(x, y, w, h, tp->map->player_x, tp->map->player_y)) {
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85 /* Stop movement and disable input. */
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86 tp->map->player_movement = 0;
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87 game.inhibit = INHIBIT_STATE_INPUT;
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88
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89 /*
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90 * We change our update function and add a draw function that
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91 * fade the screen out.
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92 */
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93 if (!texture_new(&tp->overlay, window.w, window.h))
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94 panic();
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95
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96 act->update = update_fadeout;
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97 act->draw = draw;
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98 }
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99
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100 return false;
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101 }
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102
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103 static void
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104 finish(struct action *act)
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105 {
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106 struct teleport *self = act->data;
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107
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108 texture_finish(&self->overlay);
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109
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110 free(act->data);
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111 }
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112
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113 struct action *
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114 teleport_new(struct map *map,
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115 const char *destination,
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116 int x,
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117 int y,
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118 unsigned int w,
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119 unsigned int h,
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120 int origin_x,
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121 int origin_y)
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122 {
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123 assert(map);
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124 assert(destination);
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125
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126 struct teleport *tp;
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127
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128 tp = alloc_new0(sizeof (*tp));
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129 tp->map = map;
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130 tp->x = x;
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131 tp->y = y;
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132 tp->w = w;
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133 tp->h = h;
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134 tp->origin_x = origin_x;
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135 tp->origin_y = origin_y;
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136 strlcpy(tp->destination, destination, sizeof (tp->destination));
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137
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138 tp->action.data = tp;
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139 tp->action.update = update_touch;
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140 tp->action.finish = finish;
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141
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142 return &tp->action;
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143 }