Implement LeaveChallengeCsReq (#63)

* Implement LeaveChallengeCsReq

* CodeFactor LeaveChallengeCsReq

This commit resolves the "no-unsafe-finally" check

src/server/packets/LeaveChallengeCsReq.ts

@@ -0,0 +1,70 @@
+import { GetCurSceneInfoScRsp, LeaveChallengeScRsp } from "../../data/proto/StarRail";
+import Packet from "../kcp/Packet";
+import Session from "../kcp/Session";
+import MapEntryExcel from "../../util/excel/MapEntryExcel";
+import MazePlaneExcel from "../../util/excel/MazePlaneExcel";
+import { ActorEntity } from "../../game/entities/Actor";
+
+export default async function handle(session: Session, packet: Packet) {
+    const bfArray: number[] = [];
+    for (let i = 0; i < 500; i++) {
+        bfArray.push(i);
+    }
+
+    try {
+        // Challenge maze data doesn't get saved to DB.. We can abuse this and fall back to default
+        const posData = session.player.db.posData;
+        const entry = MapEntryExcel.fromFloorId(posData.floorID);
+        const maze = MazePlaneExcel.fromPlaneId(posData.planeID);
+        if (!entry || !maze) return session.send(LeaveChallengeScRsp, LeaveChallengeScRsp.fromPartial({ retcode: 2 }));
+
+        const dataObj = LeaveChallengeScRsp.fromPartial({
+            retcode: 0,
+            maze: {
+                floor: {
+                    floorId: posData.floorID,
+                    scene: {
+                        entityList: [],
+                        entryId: entry.ID,
+                        floorId: entry.FloorID,
+                        planeId: entry.PlaneID,
+                        gameModeType: MazePlaneExcel.getGameModeForPlaneType(maze.PlaneType),
+                        lightenSectionList: bfArray,
+                        entityBuffList: [],
+                        envBuffList: [],
+                    }
+                },
+                id: posData.planeID,
+                mapEntryId: entry.ID
+            }
+        });
+
+        session.send(LeaveChallengeScRsp, dataObj);
+    } catch (e) {
+        session.c.error(e as Error);
+        session.send(LeaveChallengeScRsp, LeaveChallengeScRsp.fromPartial({ retcode: 2 }));
+    } finally {
+        // Force us back
+        const posData = session.player.db.posData;
+        const entry = MapEntryExcel.fromFloorId(posData.floorID);
+        const maze = MazePlaneExcel.fromPlaneId(posData.planeID);
+        if (entry && maze) {
+            const actor = new ActorEntity(session.player.scene, session.player.db.lineup.lineups[session.player.db.lineup.curIndex].avatarList[0], posData.pos).getSceneActorInfo();
+
+            session.send(GetCurSceneInfoScRsp, {
+                retcode: 0,
+                scene: {
+                    planeId: posData.planeID,
+                    floorId: posData.floorID,
+                    lightenSectionList: bfArray,
+                    gameModeType: MazePlaneExcel.getGameModeForPlaneType(maze.PlaneType),
+                    entityBuffList: [],
+                    envBuffList: [],
+                    entryId: entry.ID,
+                    entityList: [actor],
+                    leaderEntityId: actor.entityId
+                }
+            });
+        }
+    }
+}