首先，确保你已经正确加载了所有必须的 ammo.js 库文件。然后，确保你已经正确创建了 btBvhTriangleMeshShape 对象，并已将其附加到正确的 btRigidBody 上。最后，确保你已经正确创建了 btDefaultCollisionConfiguration 对象，并将其附加到 btCollisionWorld 中。

以下是可能的代码示例，以解决此问题：

var triangleMesh = new Ammo.btTriangleMesh();

// Add your triangles to the mesh (code omitted)

var shape = new Ammo.btBvhTriangleMeshShape(triangleMesh, true, true);

var rbInfo = new Ammo.btRigidBodyConstructionInfo(0, null, shape);

var rigidBody = new Ammo.btRigidBody(rbInfo);

var collisionConfiguration = new Ammo.btDefaultCollisionConfiguration();

var collisionDispatcher = new Ammo.btCollisionDispatcher(collisionConfiguration);

var broadphase = new Ammo.btDbvtBroadphase();

var solver = new Ammo.btSequentialImpulseConstraintSolver();

var dynamicsWorld = new Ammo.btDiscreteDynamicsWorld(collisionDispatcher, broadphase, solver, collisionConfiguration);

dynamicsWorld.addRigidBody(rigidBody);

// Ensure the scene is rendered and updated properly (code omitted)