fix npc aiming and shooting

crates/shared/src/ai/mod.rs

@@ -127,7 +127,7 @@ fn rotate(agent: Query<(Entity, &Engage)>, mut transform: Query<&mut Transform>)
         };
 
         // Get the direction vector from the current position to the target
-        let direction = (target_pos - agent_transform.translation).normalize();
+        let direction = (agent_transform.translation - target_pos).normalize();
 
         // Project the direction onto the XZ plane by zeroing out the Y component
         let xz_direction = Vec3::new(direction.x, 0.0, direction.z).normalize();