how are people writing to the box next to their pod?
like so?
1 Like
Add a space and your text at the end of any of your AIās output lines.
2 Likes
This was due to a fault in your code. Either you outputted something wrong or you faulted.
Iām making some predictions and I want to know what is the max speed BOOST can get. Any idea?
The game doesnāt end in JavaScript. There seem to be a problem with the site script (getTitle of undefined) and the game freezes. Canāt click any of the buttons. Please have a look 
Hi, itās fixed now ! just refresh the page to get the fix ! 
Hi guys how do i use the boost with C?
3 Likes
Just as in other languages: by printing " BOOST"!
yep thanks, just to check we cant use it with thrust right? so BOOST would replace thrust value?
I noticed, in bronze ligue, āoponentX & Yā coordinates. Is that curent position of the oponent, and what could we do with it for example?
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Hi guys, is there a variable for current thrust/speed? i know that there is inertia and the current thrust of my pod differs from my desired thrust. I am trying to tune my pod better.
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Hi guys, iām just wondering something. iāve started this some days ago and a friend just joined in.
I was rank 3K in bronze using Go. My friend went to silver with something really different and simple.
I used the same algo, in GO and got ranked 4K Bronze,with 15points. He used JS and went top 1 with 20.03 in score and i just had 19.11 points using the same algo using ruby.
Any guess on why the language makes the output difference? or is it pure RNG?
Thanks!
Hi,
I wood be interested to see a PID controller example for this puzzle
For the wood league (with or without the boost feature)
Thank you for sharing.
There shouldnāt be any difference depending on the language. Unless youāre timing out some of the matches.
Between 19.11 and 20.03, there isnāt much difference. You could try to resubmit and check. Did you really implement the same algo?
1 Like
Nothing happen when use BOOST. This code I assume will trigger BOOST effect (got larger fire trail?) at least once.
while (true) {
//default code here
print(nextCheckpointX + ' ' + nextCheckpointY + ' '+'BOOST');
}
Since the question state that it I can only use once, so I expect will receive some kind of error, āyou have use more than onceā
BTW, hereās my full code
When there is no boost available, the BOOST is like using a max thrust.
1 Like
Iāve been trying to understand Magusā simulator these past few days. It tracks the output pretty well but the impulse calculation seems weird. Iām gonna try a neural network so I want to clarify something before I generate millions of training data.
float product = nx*dvx + ny*dvy;
// fx and fy are missing a factor of 2?
float fx = (nx * product) / (nxnysquare * mcoeff);
float fy = (ny * product) / (nxnysquare * mcoeff);
apply_impact_vector();
float impulse = sqrt(fx*fx + fy*fy); // I think this is only a quarter of the true impulse
if (impulse < 120.0) {
fx = fx * 120.0 / impulse;
fy = fy * 120.0 / impulse;
}
apply_impact_vector_again();
If the variable impulse is greater than the minimum of 120, this algorithm is the same as applying the impact vector once using the correct(?) impulse. The calculated coordinates after the collision are off by +/-1, Iām not sure if itās a rounding error or the algorithm is incorrect. If itās correct, can someone explain why the minimum is being checked against the quarter of the true impulse?
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Hereās my PID version. Works until collisions set in, then I havenāt tuned it further.
import sys
import math
# Auto-generated code below aims at helping you parse
# the standard input according to the problem statement.
boosted = False
checkpoints = []
accumerr = 0
lasterr = 0
P, I, D = 0.03, 0.00, 0.02
lasttarget = (0,0)
def distance(p1, p2):
return math.sqrt( (p1[0]-p2[0])**2 + (p1[1]-p2[1])**2 )
# game loop
while True:
# next_checkpoint_x: x position of the next check point
# next_checkpoint_y: y position of the next check point
# next_checkpoint_dist: distance to the next checkpoint
# next_checkpoint_angle: angle between your pod orientation and the direction of the next checkpoint
x, y, next_checkpoint_x, next_checkpoint_y, next_checkpoint_dist, next_checkpoint_angle = [int(i) for i in raw_input().split()]
opponent_x, opponent_y = [int(i) for i in raw_input().split()]
# Write an action using print
# To debug: print >> sys.stderr, "Debug messages..."
newpos = (x,y)
target = (next_checkpoint_x, next_checkpoint_y)
if target not in checkpoints:
checkpoints.append(target)
if target != lasttarget:
lasttarget = target
accumerr = 0
lasterr = 0
err = distance(newpos, target)
accumerr += err
errdiff = err - lasterr
PID = (P*err + D*errdiff + I*accumerr)
lasterr = err
print >> sys.stderr, "P: " + str(P*err) + " I: " + str(I*accumerr) + " D: " + str(D*errdiff)
print >> sys.stderr, "PID: " + str(PID)
thrust = max(0, min(100, PID))
if 60 <= abs(next_checkpoint_angle):
thrust = 10
print >> sys.stderr, "Angle big: " + str(next_checkpoint_angle)
# You have to output the target position
# followed by the power (0 <= thrust <= 100)
# i.e.: "x y thrust"
if not boosted and 10 >= abs(next_checkpoint_angle) and next_checkpoint_dist >= 6000:
strthrust = "BOOST"
boosted = True
else:
strthrust = str(int(thrust))
print >> sys.stderr, "Thrust: " + strthrust
print >> sys.stderr, "Checkpoints: " + str(checkpoints)
print str(next_checkpoint_x) + " " + str(next_checkpoint_y) + " " + strthrust
3 Likes
well in Ruby :
pastebin com/DeHS92hP
and in go:
pastebin com/bqgtksh4
(need to modify the links cause of the limitation 
)
itās just an If/else ā¦
My concern is not between Ruby and JS, itās between Go being very low compared to there others
Is there any way to look in to the tutorial part which Iāve already passed. I need the picture from tutorial that shows which angle is + and which is -. I need to know does it starts relatively from checkpoint (or bot) and which one is counted clockwise.
4 Likes