diff options
author | 3gg <3gg@shellblade.net> | 2025-06-27 10:18:39 -0700 |
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committer | 3gg <3gg@shellblade.net> | 2025-06-27 10:18:39 -0700 |
commit | bd57f345ed9dbed1d81683e48199626de2ea9044 (patch) | |
tree | 4221f2f2a7ad2244d2e93052bd68187ec91b8ea9 /game/src/game.c | |
parent | 9a82ce0083437a4f9f58108b2c23b957d2249ad8 (diff) |
Diffstat (limited to 'game/src/game.c')
-rw-r--r-- | game/src/game.c | 218 |
1 files changed, 0 insertions, 218 deletions
diff --git a/game/src/game.c b/game/src/game.c deleted file mode 100644 index 51f5cbe..0000000 --- a/game/src/game.c +++ /dev/null | |||
@@ -1,218 +0,0 @@ | |||
1 | /* | ||
2 | * Main game module with entry point and game loop. | ||
3 | * | ||
4 | * The game module sets up the window and GL context and defers the core game | ||
5 | * logic to a plugin. | ||
6 | */ | ||
7 | #define _GNU_SOURCE 200112L // For readlink() | ||
8 | |||
9 | #include "game.h" | ||
10 | |||
11 | #include "plugins/plugin.h" | ||
12 | |||
13 | #include <gfx/app.h> | ||
14 | #include <gfx/core.h> | ||
15 | #include <gfx/gfx.h> | ||
16 | #include <gfx/renderer.h> | ||
17 | |||
18 | #include <error.h> | ||
19 | #include <log/log.h> | ||
20 | #include <plugin.h> | ||
21 | |||
22 | #include <assert.h> | ||
23 | #include <stdbool.h> | ||
24 | #include <stdio.h> | ||
25 | #include <stdlib.h> | ||
26 | |||
27 | #include <linux/limits.h> | ||
28 | |||
29 | #include <unistd.h> | ||
30 | |||
31 | #undef _GNU_SOURCE | ||
32 | |||
33 | static const int WIDTH = 1350; | ||
34 | static const int HEIGHT = 900; | ||
35 | static const int MAX_FPS = 60; | ||
36 | |||
37 | typedef struct GfxAppState { | ||
38 | Game game; | ||
39 | } GfxAppState; | ||
40 | |||
41 | /// Initialize the game's plugin. | ||
42 | static bool init_plugin(Game* game) { | ||
43 | assert(game); | ||
44 | assert(game->plugin); | ||
45 | // Plugin state is allowed to be null, either when the plugin does not | ||
46 | // expose an init() or when init() does not initialize a state. | ||
47 | if (plugin_resolve(game->plugin, plugin_init, "init")) { | ||
48 | State* plugin_state = 0; | ||
49 | if (!plugin_call(game->plugin, plugin_init, "init", game, &plugin_state)) { | ||
50 | return false; | ||
51 | } | ||
52 | set_plugin_state(game->plugin, plugin_state); | ||
53 | } | ||
54 | return true; // Plugin does not need to expose an init(). | ||
55 | } | ||
56 | |||
57 | /// Shutdown the game's plugin. | ||
58 | /// The game's plugin is allowed to be null in the call to this function. | ||
59 | static void shutdown_plugin(Game* game) { | ||
60 | assert(game); | ||
61 | if (game->plugin && | ||
62 | (plugin_resolve(game->plugin, plugin_shutdown, "shutdown"))) { | ||
63 | void* plugin_state = get_plugin_state(game->plugin); | ||
64 | plugin_call(game->plugin, plugin_shutdown, "shutdown", game, plugin_state); | ||
65 | set_plugin_state(game->plugin, 0); | ||
66 | } | ||
67 | } | ||
68 | |||
69 | /// Boot the game's plugin. | ||
70 | static bool boot_plugin(Game* game) { | ||
71 | assert(game); | ||
72 | assert(game->plugin); | ||
73 | if (plugin_resolve(game->plugin, plugin_boot, "boot")) { | ||
74 | void* plugin_state = get_plugin_state(game->plugin); | ||
75 | return plugin_call(game->plugin, plugin_boot, "boot", game, plugin_state); | ||
76 | } | ||
77 | return true; // Plugin does not need to expose a boot(). | ||
78 | } | ||
79 | |||
80 | /// Update the plugin's state. | ||
81 | static void update_plugin(Game* game, double t, double dt) { | ||
82 | assert(game); | ||
83 | assert(game->plugin); | ||
84 | if (plugin_resolve(game->plugin, plugin_update, "update")) { | ||
85 | void* plugin_state = get_plugin_state(game->plugin); | ||
86 | plugin_call( | ||
87 | game->plugin, plugin_update, "update", game, plugin_state, t, dt); | ||
88 | } | ||
89 | } | ||
90 | |||
91 | /// Plugin render. | ||
92 | static void render_plugin(const Game* game) { | ||
93 | assert(game); | ||
94 | assert(game->plugin); | ||
95 | if (plugin_resolve(game->plugin, plugin_render, "render")) { | ||
96 | void* plugin_state = get_plugin_state(game->plugin); | ||
97 | plugin_call(game->plugin, plugin_render, "render", game, plugin_state); | ||
98 | } | ||
99 | } | ||
100 | |||
101 | /// Plugin resize. | ||
102 | static void resize_plugin(Game* game, int width, int height) { | ||
103 | assert(game); | ||
104 | assert(game->plugin); | ||
105 | if (plugin_resolve(game->plugin, plugin_resize, "resize")) { | ||
106 | void* plugin_state = get_plugin_state(game->plugin); | ||
107 | plugin_call( | ||
108 | game->plugin, plugin_resize, "resize", game, plugin_state, width, | ||
109 | height); | ||
110 | } | ||
111 | } | ||
112 | |||
113 | static void Shutdown(Game* game); | ||
114 | |||
115 | static bool Init(Game* game, int argc, const char** argv) { | ||
116 | assert(game); | ||
117 | |||
118 | if (argc <= 1) { | ||
119 | LOGE("Usage: %s <plugin> [plugin args]", argv[0]); | ||
120 | return false; | ||
121 | } | ||
122 | |||
123 | // Syntax: game <plugin> [plugin args] | ||
124 | // | ||
125 | // Here we consume the <plugin> arg so that plugins receive the remainder | ||
126 | // args starting from 0. | ||
127 | game->argc = argc - 1; | ||
128 | game->argv = argv + 1; | ||
129 | |||
130 | char exe_path_buf[NAME_MAX] = {0}; | ||
131 | if (readlink("/proc/self/exe", exe_path_buf, sizeof(exe_path_buf)) == -1) { | ||
132 | LOGE("readlink(/proc/self/exe) failed"); | ||
133 | goto cleanup; | ||
134 | } | ||
135 | |||
136 | // Replace the last / with a null terminator to remove the exe file from the | ||
137 | // path. This gets the file's parent directory. | ||
138 | *strrchr(exe_path_buf, '/') = 0; | ||
139 | |||
140 | const mstring exe_dir = mstring_make(exe_path_buf); | ||
141 | const mstring plugins_path = mstring_concat_cstr(exe_dir, "/src/plugins"); | ||
142 | |||
143 | if (!(game->plugin_engine = new_plugin_engine( | ||
144 | &(PluginEngineDesc){.plugins_dir = mstring_cstr(&plugins_path)}))) { | ||
145 | goto cleanup; | ||
146 | } | ||
147 | |||
148 | const char* plugin = argv[1]; | ||
149 | if (!(game->plugin = load_plugin(game->plugin_engine, plugin))) { | ||
150 | goto cleanup; | ||
151 | } | ||
152 | |||
153 | if (!(game->gfx = gfx_init())) { | ||
154 | goto cleanup; | ||
155 | } | ||
156 | |||
157 | if (!init_plugin(game)) { | ||
158 | goto cleanup; | ||
159 | } | ||
160 | if (!boot_plugin(game)) { | ||
161 | goto cleanup; | ||
162 | } | ||
163 | |||
164 | return true; | ||
165 | |||
166 | cleanup: | ||
167 | LOGE("Gfx error: %s", get_error()); | ||
168 | Shutdown(game); | ||
169 | return false; | ||
170 | } | ||
171 | |||
172 | static void Shutdown(Game* game) { | ||
173 | assert(game); | ||
174 | shutdown_plugin(game); | ||
175 | if (game->gfx) { | ||
176 | gfx_destroy(&game->gfx); | ||
177 | } | ||
178 | if (game->plugin) { | ||
179 | delete_plugin(&game->plugin); | ||
180 | } | ||
181 | if (game->plugin_engine) { | ||
182 | delete_plugin_engine(&game->plugin_engine); | ||
183 | } | ||
184 | } | ||
185 | |||
186 | static void Update(Game* game, double t, double dt) { | ||
187 | plugin_engine_update(game->plugin_engine); | ||
188 | if (plugin_reloaded(game->plugin)) { | ||
189 | shutdown_plugin(game); | ||
190 | const bool result = init_plugin(game); | ||
191 | assert(result); // TODO: handle error better. | ||
192 | |||
193 | // Trigger a resize just like the initial resize that occurs when the gfx | ||
194 | // application starts. | ||
195 | resize_plugin(game, game->width, game->height); | ||
196 | } | ||
197 | |||
198 | update_plugin(game, t, dt); | ||
199 | } | ||
200 | |||
201 | static void Render(const Game* game) { | ||
202 | GfxCore* gfxcore = gfx_get_core(game->gfx); | ||
203 | gfx_start_frame(gfxcore); | ||
204 | render_plugin(game); | ||
205 | gfx_end_frame(gfxcore); | ||
206 | } | ||
207 | |||
208 | static void Resize(Game* game, int width, int height) { | ||
209 | game->width = width; | ||
210 | game->height = height; | ||
211 | |||
212 | GfxCore* gfxcore = gfx_get_core(game->gfx); | ||
213 | gfx_set_viewport(gfxcore, 0, 0, width, height); | ||
214 | |||
215 | resize_plugin(game, width, height); | ||
216 | } | ||
217 | |||
218 | GFX_APP_MAIN(WIDTH, HEIGHT, MAX_FPS, "Game"); | ||