fix(gta): clear blocked-exit warning when driving resumes

Restore route guidance when the driver moves on after an obstructed exit. / 驾驶恢复后清除下车受阻提示并恢复路线指引。

Author: functionstackx

packages/app/src/components/gta/gta-engine.test.ts

@@ -25,6 +25,16 @@ const advance = (s: ReturnType<typeof newCity>, c = EMPTY_CONTROLS, seconds = 1)
   for (let i = 0; i < Math.round(seconds * 60); i++) stepCity(s, c, 1 / 60);
 };
 describe('GTA 3D simulation', () => {
+  it.each([null, 6])('clears a failed exit warning when driving resumes in mode %s', (tour) => {
+    const s = driving();
+    s.tour = tour;
+    s.message = 'blocked';
+    s.traffic = [];
+    advance(s, EMPTY_CONTROLS, 0.1);
+    expect(s.message).toBe('blocked');
+    advance(s, { ...EMPTY_CONTROLS, forward: true }, 0.1);
+    expect(s.message).toBe('drive');
+  });
   it('offers a driveable, untimed NVIDIA tour without silently teleporting', () => {
     const s = driving();
     const before = { ...s.player };

packages/app/src/components/gta/gta-engine.ts

@@ -207,6 +207,9 @@ export function stepCity(s: CityState, c: Controls, seconds: number) {
   s.immunity = Math.max(0, s.immunity - dt);
   const throttle = Number(c.forward) - Number(c.reverse),
     turn = Number(c.right) - Number(c.left);
+  if (s.message === 'blocked' && (throttle !== 0 || Math.abs(s.car.speed) > 0.5)) {
+    s.message = 'drive';
+  }
   if (s.onFoot) {
     s.player.angle -= turn * 2.4 * dt; // Camera faces the actor's forward direction.
     s.player.speed = throttle * (c.sprint ? 8 : 3.5);