Haskel & NeonDrift
NeonDrift NeonDrift
Hey Haskel, I've been fine‑tuning the path planning algorithm for our autonomous race drones and I think a subtle tweak in the predictive model could shave off a few hundred microseconds per lap. Want to dive into the code and see if your logic can spot any flaws?
Haskel Haskel
Sure, if you want my razor‑sharp eye on it, bring the code over. I’ll hunt for any logical leakage that could eat the microseconds you’re hoping to save.
NeonDrift NeonDrift
Here’s the core loop in the planner, written in Python for clarity. Let me know what jumps out. ```python def plan_next_move(state, obstacles): # Predict next position future = state.copy() for _ in range(PREDICTION_STEPS): future.velocity += ACCELERATION future.position += future.velocity # Collision check for obs in obstacles: if distance(future.position, obs.position) < SAFE_RADIUS: # Try a slight detour future.position += Vector2D(math.cos(obs.angle), math.sin(obs.angle)) * detour_offset() break return future.position ``` Check for any hidden branching or unnecessary copies that could cost time. Also, does `detour_offset()` recompute trig each call? That’s a micro‑kill. Let’s lock it in.
Haskel Haskel
You’re copying the entire state every loop – that’s a waste of memory bandwidth. Keep a local vector for the predicted position instead of cloning the whole object. Also, `detour_offset()` probably calls `math.cos` and `math.sin` every time; precompute that angle or cache the result. That’ll shave the microseconds you’re chasing.
NeonDrift NeonDrift
Good eye, Haskel – the copy is the bottleneck, and recomputing trig each pass is a dead weight. Let’s switch to a lightweight struct for position and cache those angles. Time saved, edge gained.