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annotate libadventure/adventure/mainmenu_state.c @ 125:d59efa737fcc

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cmake: add examples and fix
author David Demelier <markand@malikania.fr>
date Tue, 06 Oct 2020 12:43:29 +0200
parents 789b23e01f52
children c679e08b32b2
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1 /*
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2 * mainmenu_state.c -- game main menu
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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 <stdlib.h>
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21 #include <string.h>
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22
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23 #include <core/event.h>
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24 #include <core/font.h>
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25 #include <core/game.h>
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26 #include <core/image.h>
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27 #include <core/map_state.h>
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28 #include <core/painter.h>
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29 #include <core/panic.h>
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30 #include <core/state.h>
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31 #include <core/sys.h>
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32 #include <core/texture.h>
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33 #include <core/window.h>
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34
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35 #include "mainmenu_state.h"
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36 #include "splashscreen_state.h"
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37
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38 #define SPEED 120
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39 #define SEC 1000
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40
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41 enum substate {
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42 SUBSTATE_MOVING,
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43 SUBSTATE_WAITING
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44 };
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45
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46 static int x;
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47 static int y;
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48 static unsigned int selection;
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49 static int destination;
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50 static enum substate substate;
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51 static struct texture image;
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52
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53 /* Menu items. */
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54 static struct {
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55 struct texture texture;
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56 int x;
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57 int y;
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58 } items[3];
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59
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60 static void
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61 enter(void)
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62 {
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63 struct font font = { 0 };
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64
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65 if (!font_open(&font, sys_datapath("fonts/pirata-one.ttf"), 30))
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66 panic();
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67
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68 substate = SUBSTATE_MOVING;
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69 x = splashscreen_state_data.x;
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70 y = splashscreen_state_data.y;
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71 destination = window.h / 4;
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72
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73 /* TODO: change continue color if no game exists. */
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74 font_render(&font, &items[0].texture, "New game");
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75 items[0].x = (window.w / 2) - (items[0].texture.w / 2);
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76 items[0].y = window.h * 0.75;
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77
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78 font_render(&font, &items[1].texture, "Continue");
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79 items[1].x = items[0].x;
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80 items[1].y = items[0].y + items[0].texture.h;
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81
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82 font_render(&font, &items[2].texture, "Quit");
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83 items[2].x = items[0].x;
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84 items[2].y = items[1].y + items[1].texture.h;
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85
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86 font_finish(&font);
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87 }
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88
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89 static void
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90 new(void)
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91 {
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92 /* TODO: convenient map_state_start function? */
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93
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94 /* Prepare map. */
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95 if (!map_data_open(&map_state_data.map.data, sys_datapath("maps/test.map")))
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96 panic();
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97 if (!map_init(&map_state_data.map.map, &map_state_data.map.data))
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98 panic();
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99
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100 /* Prepare image and sprite. */
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101 if (!(image_open(&image, sys_datapath("sprites/test-walk.png"))))
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102 panic();
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103
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104 sprite_init(&map_state_data.player.sprite, &image, 48, 48);
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105 game_switch(&map_state, false);
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106 }
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107
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108 static void
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109 resume(void)
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110 {
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111 }
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112
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113 static void
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114 quit(void)
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115 {
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116 game_quit();
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117 }
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118
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119 static void
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120 perform(void)
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121 {
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122 assert(selection < 3);
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123
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124 static void (*handlers[])(void) = {
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125 [0] = new,
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126 [1] = resume,
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127 [2] = quit
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128 };
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129
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130 handlers[selection]();
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131 }
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132
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133 static void
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134 handle(const union event *event)
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135 {
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136 if (substate != SUBSTATE_WAITING)
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137 return;
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138
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139 switch (event->type) {
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140 case EVENT_KEYDOWN:
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141 switch (event->key.key) {
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142 case KEY_UP:
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143 selection = selection == 0 ? 2 : selection - 1;
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144 break;
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145 case KEY_DOWN:
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146 selection = (selection + 1) % 3;
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147 break;
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148 case KEY_ENTER:
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149 perform();
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150 default:
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151 break;
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152 }
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153 break;
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154 default:
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155 break;
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156 }
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157 }
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158
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159 static void
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160 update(unsigned int ticks)
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161 {
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162 switch (substate) {
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163 case SUBSTATE_MOVING:
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164 y -= SPEED * ticks / SEC;
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165
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166 if (y <= destination) {
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167 y = destination;
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168 substate = SUBSTATE_WAITING;
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169 }
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170
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171 break;
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172 default:
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173 break;
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174 }
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175 }
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176
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177 static void
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178 draw(void)
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179 {
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180 painter_set_color(0xffffffff);
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181 painter_clear();
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182 texture_draw(&splashscreen_state_data.text, x, y);
80
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183
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184 if (substate == SUBSTATE_WAITING) {
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185 texture_draw(&items[0].texture, items[0].x, items[0].y);
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186 texture_draw(&items[1].texture, items[1].x, items[1].y);
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187 texture_draw(&items[2].texture, items[2].x, items[2].y);
80
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188
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189 /* Selection cursor. */
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190
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191 /* TODO: a sword here. */
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192 painter_set_color(0x000000ff);
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04011a942e3b painter: simplify API
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193 painter_draw_rectangle(items[selection].x - 30,
80
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194 items[selection].y + 11, 15, 15);
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195 }
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196 }
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197
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198 static void
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199 leave(void)
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200 {
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201 texture_finish(&items[0].texture);
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202 texture_finish(&items[1].texture);
80
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203 memset(items, 0, sizeof (items));
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204 }
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205
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206 struct state mainmenu_state = {
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207 .enter = enter,
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208 .handle = handle,
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209 .update = update,
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210 .draw = draw,
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211 .leave = leave
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212 };