feat: async pathfinding

src/logic/scripting/lua/libs/libpathfinding.cpp

@@ -31,8 +31,10 @@ static int l_make_route(lua::State* L) {
     if (auto agent = get_agent(L)) {
         auto start = lua::tovec3(L, 2);
         auto target = lua::tovec3(L, 3);
-        auto route = level->pathfinding->perform(*agent, start, target);
-        agent->route = route;
+        agent->state = {};
+        agent->start = start;
+        agent->target = target;
+        auto route = level->pathfinding->perform(*agent);
         if (!route.found) {
             return 0;
         }
@@ -46,6 +48,37 @@ static int l_make_route(lua::State* L) {
     return 0;
 }
 
+static int l_make_route_async(lua::State* L) {
+    if (auto agent = get_agent(L)) {
+        auto start = lua::tovec3(L, 2);
+        auto target = lua::tovec3(L, 3);
+        agent->state = {};
+        agent->start = start;
+        agent->target = target;
+        level->pathfinding->perform(*agent, 0);
+    }
+    return 0;
+}
+
+static int l_pull_route(lua::State* L) {
+    if (auto agent = get_agent(L)) {
+        auto& route = agent->route;
+        if (!agent->state.finished) {
+            return 0;
+        }
+        if (!route.found) {
+            return lua::createtable(L, 0, 0);
+        }
+        lua::createtable(L, route.nodes.size(), 0);
+        for (int i = 0; i < route.nodes.size(); i++) {
+            lua::pushvec3(L, route.nodes[i].pos);
+            lua::rawseti(L, i + 1);
+        }
+        return 1;
+    }
+    return 0;
+}
+
 static int l_set_max_visited_blocks(lua::State* L) {
     if (auto agent = get_agent(L)) {
         agent->maxVisitedBlocks = lua::tointeger(L, 2);
@@ -58,6 +91,8 @@ const luaL_Reg pathfindinglib[] = {
     {"set_enabled", lua::wrap<l_set_enabled>},
     {"is_enabled", lua::wrap<l_is_enabled>},
     {"make_route", lua::wrap<l_make_route>},
+    {"make_route_async", lua::wrap<l_make_route_async>},
+    {"pull_route", lua::wrap<l_pull_route>},
     {"set_max_visited", lua::wrap<l_set_max_visited_blocks>},
     {NULL, NULL}
 };