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#include "honey.h"
void honey_print_help()
{
printf("usage: honey [OPTIONS] SCRIPT_DIR\n"
" -v Enable verbose logging\n"
" -h Show this help message and exit\n"
" -l LOG Log to LOG instead of stdout\n");
}
/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
bool honey_parse_options(honey_options* options, int argc, char** argv)
{
honey_options opts;
opts.verbose = false;
opts.script_directory = NULL;
opts.logfile = NULL;
opterr = 0;
int c;
while ((c = getopt(argc, argv, "vhl:")) != -1) {
switch (c) {
case 'v':
opts.verbose = true;
break;
case 'h':
honey_print_help();
return false;
case 'l':
opts.logfile = optarg;
break;
case '?':
fprintf(stderr, "unknown option: '%c'\n", optopt);
honey_print_help();
return false;
default:
return false;
}
}
if (optind < argc) {
opts.script_directory = argv[optind];
}
*options = opts;
return true;
}
/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
bool honey_setup(lua_State** L)
{
/* set up lua and honey lua bindings */
*L = luaL_newstate();
luaL_openlibs(*L);
lua_createtable(*L, 0, 1);
if (!honey_setup_window(*L))
return false;
lua_setfield(*L, -2, "window");
honey_setup_input(*L);
lua_setfield(*L, -2, "input");
honey_setup_cglm(*L);
lua_setfield(*L, -2, "cglm");
lua_pushcfunction(*L, honey_exit);
lua_setfield(*L, -2, "exit");
lua_setglobal(*L, "honey");
return true;
}
/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
bool honey_run(lua_State* L, honey_options opts) {
lua_rawgeti(L, LUA_REGISTRYINDEX, honey_window_info_ref);
honey_window_information* info = lua_touserdata(L, -1);
honey_window window = info->window;
char* script;
honey_result res = honey_format_string(&script,
"%s/main.lua",
opts.script_directory);
if (res != HONEY_OK) {
fprintf(stderr, "[honey] FATAL: could not allocate space for script filename!");
return false;
}
if (luaL_loadfile(L, script) == 0) {
if (!honey_lua_pcall(L, 0, 1) == 0) {
const char* error = lua_tostring(L, -1);
fprintf(stderr, "[honey] ERROR: %s\n", error);
return false;
}
}
else {
fprintf(stderr, "ERROR: failed to open %s!\n", script);
return false;
}
int update_callback = honey_get_callback(L, "update");
int draw_callback = honey_get_callback(L, "draw");
float prevTime = 0;
float currentTime = 0;
float dt;
while (!glfwWindowShouldClose(window)) {
currentTime = (float) glfwGetTime();
dt = currentTime - prevTime;
prevTime = currentTime;
glfwPollEvents();
if (update_callback != LUA_NOREF) {
lua_rawgeti(L, LUA_REGISTRYINDEX, update_callback);
lua_pushnumber(L, dt);
int result = honey_lua_pcall(L, 1, 0);
if (result != 0) {
const char* error = lua_tostring(L, -1);
fprintf(stderr, "[honey] ERROR: %s\n", error);
glfwSetWindowShouldClose(window, true);
}
}
if (draw_callback != LUA_NOREF) {
lua_rawgeti(L, LUA_REGISTRYINDEX, draw_callback);
int result = honey_lua_pcall(L, 0, 0);
if (result != 0) {
const char* error = lua_tostring(L, -1);
fprintf(stderr, "[honey] ERROR: %s\n", error);
glfwSetWindowShouldClose(window, true);
}
}
}
lua_close(L);
glfwTerminate();
return true;
}
/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
int honey_get_callback(lua_State* L, char* callback)
{
lua_getglobal(L, "honey");
lua_getfield(L, -1, callback);
int ref = LUA_NOREF;
if (lua_isfunction(L, -1))
ref = luaL_ref(L, LUA_REGISTRYINDEX);
else
lua_pop(L, 1);
lua_pop(L, 1);
return ref;
}
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