void load_game_dll(game_state *gstate) {
char *source_dll_name = "game_logic.dll";
char *temp_dll_name = "game_logic_temp.dll";
CopyFile(source_dll_name, temp_dll_name, FALSE);
gstate->lib = LoadLibrary(temp_dll_name);
gstate->last_write_time = get_last_write_time(source_dll_name);
if(gstate->lib) {
gstate->update = (game_update_func *) GetProcAddress(gstate->lib, "update");
gstate->render = (game_render_func *) GetProcAddress(gstate->lib, "render");
gstate->init = (game_init_func *) GetProcAddress(gstate->lib, "init");
gstate->is_init = 0;
} else {
gstate->update = game_update_stub;
gstate->render = game_render_stub;
gstate->init = game_init_stub;
}
}
int main(int argc, char ** argv) {
game_state gamestate = {};
GLFWwindow *window = init(&gamestate);
load_program_attrib_location(&gamestate);
bool run = true;
int max_frames_to_simulate = 2;
gamestate.update = game_update_stub;
gamestate.render = game_render_stub;
gamestate.init = game_init_stub;
gamestate.window_width_height = vec2(SCREEN_SIZE_X, SCREEN_SIZE_Y);
load_game_dll(&gamestate);
// glfwSetTime(0);
double total_time = 0;
double current_time = glfwGetTime();
double previous_time = current_time;
double frame_time = 0;
glfwSwapInterval(0);
sh_circle testing(0, 0, 10, vec2(0, 1), vec4(1, 0, 0, 1));
while(run) {
current_time = glfwGetTime();
frame_time = (current_time - previous_time);
if(frame_time > 0.25)
frame_time = 0.25;
total_time += frame_time;
previous_time = current_time;
FILETIME last_write_dll = get_last_write_time("game_logic.dll");
if(CompareFileTime(&gamestate.last_write_time, &last_write_dll) != 0) {
unload_game_dll(&gamestate);
load_game_dll(&gamestate);
}
if(!gamestate.is_init) {
gamestate.init(&gamestate);
gamestate.is_init = 1;
}
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
if((glfwGetKey(window, GLFW_KEY_ESCAPE) == GLFW_PRESS)) {
run = false;
glfwSetWindowShouldClose(window, true);
}
while(( total_time >= dt )) {
gamestate.update(&gamestate, &mouse_st);
total_time -= dt;
}
const double time_left_alpha = total_time/dt;
gamestate.render(&gamestate, time_left_alpha);
glfwSwapBuffers(window);
glfwPollEvents();
}
glfwDestroyWindow(window);
return 0;
}
void lua_script_init(lua_State **L,HANDLE **lua_filenotify,__int64 *ft)
{
char fscript[MAX_PATH]={0};
int script_changed=FALSE;
get_lua_script_fname(fscript,sizeof(fscript));
if(lua_script_enable){
__int64 tt=0;
get_last_write_time(fscript,&tt);
if(tt!=(*ft)){
script_changed=TRUE;
hide_tooltip();
}
}
if(lua_script_enable){
if((*L)==0 || script_changed){
lua_State *lua;
lua=luaL_newstate();
if(lua!=0){
luaL_openlibs(lua);
if(luaL_loadfile(lua,fscript)!=LUA_OK){
printf("luaL_loadfile error:%s\n",lua_tostring(lua, -1));
show_tooltip(lua_tostring(lua, -1),0,0);
lua_close(lua);
}
else{
lua_register_c_functions(lua);
if(lua_pcall(lua,0,0,0)!=LUA_OK){
printf("lua_pcall error:%s\n",lua_tostring(lua, -1));
show_tooltip(lua_tostring(lua, -1),0,0);
lua_close(lua);
}
else{
if((*L)!=0)
lua_close(*L);
*L=lua;
get_last_write_time(fscript,ft);
lua_error_msg=0;
hide_tooltip();
}
}
}
}
}
if(*lua_filenotify!=0){
if(FindNextChangeNotification(*lua_filenotify)==0){
FindCloseChangeNotification(*lua_filenotify);
*lua_filenotify=0;
}
}
if(*lua_filenotify==0){
HANDLE fn;
char path[MAX_PATH]={0};
get_ini_path(path,sizeof(path));
fn=FindFirstChangeNotification(path,FALSE,FILE_NOTIFY_CHANGE_FILE_NAME|FILE_NOTIFY_CHANGE_LAST_WRITE);
if(fn!=INVALID_HANDLE_VALUE)
*lua_filenotify=fn;
}
}
