mirror of https://github.com/bjornbytes/lovr.git
230 lines
6.4 KiB
C
230 lines
6.4 KiB
C
#include "api.h"
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#include "event/event.h"
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#include "thread/thread.h"
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#include "util.h"
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#include <stdlib.h>
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#include <string.h>
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StringEntry lovrEventType[] = {
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[EVENT_QUIT] = ENTRY("quit"),
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[EVENT_RESTART] = ENTRY("restart"),
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[EVENT_FOCUS] = ENTRY("focus"),
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[EVENT_RESIZE] = ENTRY("resize"),
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[EVENT_KEYPRESSED] = ENTRY("keypressed"),
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[EVENT_KEYRELEASED] = ENTRY("keyreleased"),
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[EVENT_TEXTINPUT] = ENTRY("textinput"),
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#ifndef LOVR_DISABLE_THREAD
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[EVENT_THREAD_ERROR] = ENTRY("threaderror"),
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#endif
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[EVENT_PERMISSION] = ENTRY("permission"),
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{ 0 }
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};
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static LOVR_THREAD_LOCAL int pollRef;
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void luax_checkvariant(lua_State* L, int index, Variant* variant) {
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int type = lua_type(L, index);
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switch (type) {
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case LUA_TNIL:
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case LUA_TNONE:
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variant->type = TYPE_NIL;
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break;
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case LUA_TBOOLEAN:
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variant->type = TYPE_BOOLEAN;
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variant->value.boolean = lua_toboolean(L, index);
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break;
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case LUA_TNUMBER:
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variant->type = TYPE_NUMBER;
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variant->value.number = lua_tonumber(L, index);
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break;
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case LUA_TSTRING: {
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size_t length;
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const char* string = lua_tolstring(L, index, &length);
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if (length <= sizeof(variant->value.ministring.data)) {
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variant->type = TYPE_MINISTRING;
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variant->value.ministring.length = length;
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memcpy(variant->value.ministring.data, string, length);
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} else {
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variant->type = TYPE_STRING;
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variant->value.string.pointer = malloc(length + 1);
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lovrAssert(variant->value.string.pointer, "Out of memory");
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memcpy(variant->value.string.pointer, string, length);
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variant->value.string.pointer[length] = '\0';
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variant->value.string.length = length;
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}
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break;
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}
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case LUA_TUSERDATA:
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variant->type = TYPE_OBJECT;
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Proxy* proxy = lua_touserdata(L, index);
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lua_getmetatable(L, index);
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lua_pushliteral(L, "__info");
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lua_rawget(L, -2);
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TypeInfo* info = lua_touserdata(L, -1);
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variant->value.object.type = info->name;
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variant->value.object.destructor = info->destructor;
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lua_pop(L, 1);
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variant->value.object.pointer = proxy->object;
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lovrRetain(proxy->object);
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lua_pop(L, 1);
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break;
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default:
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lovrThrow("Bad variant type for argument %d: %s", index, lua_typename(L, type));
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return;
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}
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}
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int luax_pushvariant(lua_State* L, Variant* variant) {
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switch (variant->type) {
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case TYPE_NIL: lua_pushnil(L); return 1;
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case TYPE_BOOLEAN: lua_pushboolean(L, variant->value.boolean); return 1;
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case TYPE_NUMBER: lua_pushnumber(L, variant->value.number); return 1;
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case TYPE_STRING: lua_pushlstring(L, variant->value.string.pointer, variant->value.string.length); return 1;
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case TYPE_MINISTRING: lua_pushlstring(L, variant->value.ministring.data, variant->value.ministring.length); return 1;
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case TYPE_OBJECT: _luax_pushtype(L, variant->value.object.type, hash64(variant->value.object.type, strlen(variant->value.object.type)), variant->value.object.pointer); return 1;
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default: return 0;
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}
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}
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static int nextEvent(lua_State* L) {
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Event event;
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if (!lovrEventPoll(&event)) {
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return 0;
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}
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if (event.type == EVENT_CUSTOM) {
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lua_pushstring(L, event.data.custom.name);
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} else {
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luax_pushenum(L, EventType, event.type);
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}
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switch (event.type) {
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case EVENT_QUIT:
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lua_pushnumber(L, event.data.quit.exitCode);
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return 2;
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case EVENT_FOCUS:
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lua_pushboolean(L, event.data.boolean.value);
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return 2;
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case EVENT_RESIZE:
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lua_pushinteger(L, event.data.resize.width);
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lua_pushinteger(L, event.data.resize.height);
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return 3;
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case EVENT_KEYPRESSED:
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luax_pushenum(L, KeyboardKey, event.data.key.code);
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lua_pushinteger(L, event.data.key.scancode);
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lua_pushboolean(L, event.data.key.repeat);
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return 4;
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case EVENT_KEYRELEASED:
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luax_pushenum(L, KeyboardKey, event.data.key.code);
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lua_pushinteger(L, event.data.key.scancode);
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return 3;
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case EVENT_TEXTINPUT:
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lua_pushlstring(L, event.data.text.utf8, strnlen(event.data.text.utf8, 4));
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lua_pushinteger(L, event.data.text.codepoint);
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return 3;
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#ifndef LOVR_DISABLE_THREAD
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case EVENT_THREAD_ERROR:
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luax_pushtype(L, Thread, event.data.thread.thread);
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lua_pushstring(L, event.data.thread.error);
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lovrRelease(event.data.thread.thread, lovrThreadDestroy);
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return 3;
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#endif
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case EVENT_PERMISSION:
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luax_pushenum(L, Permission, event.data.permission.permission);
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lua_pushboolean(L, event.data.permission.granted);
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return 3;
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case EVENT_CUSTOM:
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for (uint32_t i = 0; i < event.data.custom.count; i++) {
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Variant* variant = &event.data.custom.data[i];
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luax_pushvariant(L, variant);
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lovrVariantDestroy(variant);
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}
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return event.data.custom.count + 1;
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default:
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return 1;
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}
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}
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static int l_lovrEventClear(lua_State* L) {
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lovrEventClear();
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return 0;
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}
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static int l_lovrEventPoll(lua_State* L) {
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lua_rawgeti(L, LUA_REGISTRYINDEX, pollRef);
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return 1;
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}
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static int l_lovrEventPump(lua_State* L) {
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lovrEventPump();
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return 0;
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}
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static int l_lovrEventPush(lua_State* L) {
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CustomEvent eventData;
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const char* name = luaL_checkstring(L, 1);
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strncpy(eventData.name, name, MAX_EVENT_NAME_LENGTH - 1);
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eventData.count = MIN(lua_gettop(L) - 1, 4);
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for (uint32_t i = 0; i < eventData.count; i++) {
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luax_checkvariant(L, 2 + i, &eventData.data[i]);
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}
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lovrEventPush((Event) { .type = EVENT_CUSTOM, .data.custom = eventData });
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return 0;
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}
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static int l_lovrEventQuit(lua_State* L) {
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int exitCode = luaL_optinteger(L, 1, 0);
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Event event = { .type = EVENT_QUIT, .data.quit.exitCode = exitCode };
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lovrEventPush(event);
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return 0;
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}
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static int l_lovrEventRestart(lua_State* L) {
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Event event = { .type = EVENT_RESTART };
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lovrEventPush(event);
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return 0;
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}
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static const luaL_Reg lovrEvent[] = {
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{ "clear", l_lovrEventClear },
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{ "poll", l_lovrEventPoll },
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{ "pump", l_lovrEventPump },
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{ "push", l_lovrEventPush },
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{ "quit", l_lovrEventQuit },
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{ "restart", l_lovrEventRestart },
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{ NULL, NULL }
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};
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int luaopen_lovr_event(lua_State* L) {
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lua_newtable(L);
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luax_register(L, lovrEvent);
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// Store nextEvent in the registry to avoid creating a closure every time we poll for events.
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lua_pushcfunction(L, nextEvent);
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pollRef = luaL_ref(L, LUA_REGISTRYINDEX);
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if (lovrEventInit()) {
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luax_atexit(L, lovrEventDestroy);
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}
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return 1;
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}
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