User talk:Starrynte/DCLSHResearch - Revision history

RednaxelaBot: Using .

2010-07-01T08:43:18Z

Using <syntaxhighlight>.

Voidious: /* Disabled */ pros and cons

2009-10-03T03:01:42Z

Disabled: pros and cons

Starrynte: collecting data when disabled?

2009-10-03T02:54:10Z

collecting data when disabled?

Starrynte: theoretical maximum lateral velocity deceleration is 8

2009-09-30T03:25:23Z

theoretical maximum lateral velocity deceleration is 8

Voidious: /* Lateral Acceleration */ test vs Stop And Go

2009-09-30T02:26:33Z

Lateral Acceleration: test vs Stop And Go

Starrynte: thanks xyz; assuming direction is 1 when enemy isn't moving?

2009-09-30T02:08:08Z

thanks xyz; assuming direction is 1 when enemy isn't moving?

Zyx: /* Lateral Acceleration */ real maximum lateral accel/deccel

2009-09-30T01:53:32Z

Lateral Acceleration: real maximum lateral accel/deccel

Zyx: /* Lateral Acceleration */

2009-09-30T01:28:15Z

Lateral Acceleration

Starrynte: forgot that it was MEA

2009-09-30T01:13:09Z

forgot that it was *M*EA

Rednaxela: /* Max Escape Angle */ comment

2009-09-29T15:06:25Z

Max Escape Angle: comment

@@ Line 23: / Line 23: @@
 Do you have:
-<pre>
+<syntaxhighlight>
 while(true) {
      turnRadarRightRadians(Double.POSITIVE_INFINITY);
+}
-</pre>
+</syntaxhighlight>
 -- or --
-<pre>
+<syntaxhighlight>
 while(true) {
      if (getRadarTurnRemaining() == 0)
@@ Line 36: / Line 36: @@
      execute();
+}
-</pre>
+</syntaxhighlight>
 Or do you just do:
-<pre>
+<syntaxhighlight>
 setTurnRadarRightRadians(Double.POSITIVE_INFINITY);
 while (true) {
@@ Line 45: / Line 45: @@
      execute();
+}
-</pre>
+</syntaxhighlight>
 ? If you do the last one, than if you are not moving you might sometimes lost the radar lock, which result exactly the same as your. I'm not sure it is Robocode's bug or not. [[User:Nat|<span style="color:#099;">Nat</span>]] [[User talk:Nat|<span style="color:#0a5;">Pavasant</span>]] 11:16, 24 September 2009 (UTC)
 * I have the last one. What doesn't make sense to me is that the scan arc is still there, the radar stopped turning but the arc isn't a line. --[[User:Starrynte|Starrynte]] 01:17, 25 September 2009 (UTC)
@@ Line 91: / Line 91: @@
 : I went ahead I try to figure them out again, this is the C++ code I used.
-<pre>
+<syntaxhighlight>
 double max_deccel = 0, dsv, dev;
 double max_accel = 0, asv, aev;
@@ Line 118: / Line 118: @@
 printf("lat deccel (%.4f -> %.4f): %.10lf\n", dsv, dev, max_deccel);
 printf("lat accel (%.4f -> %.4f): %.10lf\n", asv, aev, max_accel);
-</pre>
+</syntaxhighlight>
 : The results are
 <pre>

@@ Line 157: / Line 157: @@
 ===Disabled===
 What are pros and cons of collecting GF data while disabled? --[[User:Starrynte|Starrynte]] 02:54, 3 October 2009 (UTC)
 == Comparison to segmentation ==

← Older revision		Revision as of 02:54, 3 October 2009
Line 154:		Line 154:

	Bots that do "[[Maximum Escape Angle/Precise\|Precise MEA]]" cannot shoot out of bounds since the no GF with that scheme can be out of bounds. Many bots don't use that either though (none of mine do) and still have very strong guns. As I see it, if the bot has a decent wall segment (or that "Precise MEA"), then it will tend to avoid shooting out of bounds on it's own without an explicit mechanism. --[[User:Rednaxela\|Rednaxela]] 15:01, 29 September 2009 (UTC)		Bots that do "[[Maximum Escape Angle/Precise\|Precise MEA]]" cannot shoot out of bounds since the no GF with that scheme can be out of bounds. Many bots don't use that either though (none of mine do) and still have very strong guns. As I see it, if the bot has a decent wall segment (or that "Precise MEA"), then it will tend to avoid shooting out of bounds on it's own without an explicit mechanism. --[[User:Rednaxela\|Rednaxela]] 15:01, 29 September 2009 (UTC)
		+
		+	===Disabled===
		+	What are pros and cons of collecting GF data while disabled? --[[User:Starrynte\|Starrynte]] 02:54, 3 October 2009 (UTC)

	== Comparison to segmentation ==		== Comparison to segmentation ==

@@ Line 132: / Line 132: @@
 : Hope this helps. --[[User:Zyx|zyx]] 01:53, 30 September 2009 (UTC)
 * It does, in fact, thank you! As for the "odd" velocities, it isn't that odd I think because if you're going slower you can turn faster. --[[User:Starrynte|Starrynte]] 02:08, 30 September 2009 (UTC)
 Does assuming the direction is 1 when the enemy isn't moving cause a large performance hit, compared with assuming the direction is the last "good" lateral velocity?

@@ Line 135: / Line 135: @@
 Does assuming the direction is 1 when the enemy isn't moving cause a large performance hit, compared with assuming the direction is the last "good" lateral velocity?
 --[[User:Starrynte|Starrynte]] 02:08, 30 September 2009 (UTC)
 ===Max Escape Angle===

← Older revision		Revision as of 02:08, 30 September 2009
Line 131:		Line 131:

	: Hope this helps. --[[User:Zyx\|zyx]] 01:53, 30 September 2009 (UTC)		: Hope this helps. --[[User:Zyx\|zyx]] 01:53, 30 September 2009 (UTC)
		+	* It does, in fact, thank you! As for the "odd" velocities, it isn't that odd I think because if you're going slower you can turn faster. --[[User:Starrynte\|Starrynte]] 02:08, 30 September 2009 (UTC)
		+
		+	Does assuming the direction is 1 when the enemy isn't moving cause a large performance hit, compared with assuming the direction is the last "good" lateral velocity?
		+	--[[User:Starrynte\|Starrynte]] 02:08, 30 September 2009 (UTC)

	===Max Escape Angle===		===Max Escape Angle===

← Older revision		Revision as of 01:53, 30 September 2009
Line 89:		Line 89:

	[[Rednaxela]] is right, I once calculated those values, but don't have them anymore. But they where somewhere around [2.02, 1.02]. --[[User:Zyx\|zyx]] 01:28, 30 September 2009 (UTC)		[[Rednaxela]] is right, I once calculated those values, but don't have them anymore. But they where somewhere around [2.02, 1.02]. --[[User:Zyx\|zyx]] 01:28, 30 September 2009 (UTC)
		+
		+	: I went ahead I try to figure them out again, this is the C++ code I used.
		+	<pre>
		+	double max_deccel = 0, dsv, dev;
		+	double max_accel = 0, asv, aev;
		+	const double delta = 1e-5;
		+	const double pi = acos(-1.);
		+	for ( double x = 2; x < 8; x += delta ) {
		+	double y = x - 2;
		+	double vx = x * sin(pi / 2);
		+	double vy = y * sin(pi / 2 + pi / 18 - y * pi / 240);
		+	if ( vx - vy > max_deccel ) {
		+	max_deccel = vx - vy;
		+	dsv = x;
		+	dev = y;
		+	}
		+	}
		+	for ( double x = 0; x + 1 - 1e-9 < 8; x += delta ) {
		+	double y = x + 1;
		+	double vx = x * sin(pi / 2 - pi / 18 + y * pi / 240);
		+	double vy = y * sin(pi / 2);
		+	if ( vy - vx > max_accel ) {
		+	max_accel = vy - vx;
		+	asv = x;
		+	aev = y;
		+	}
		+	}
		+	printf("lat deccel (%.4f -> %.4f): %.10lf\n", dsv, dev, max_deccel);
		+	printf("lat accel (%.4f -> %.4f): %.10lf\n", asv, aev, max_accel);
		+	</pre>
		+	: The results are
		+	<pre>
		+	lat deccel (6.4478 -> 4.4478): 2.0300517561
		+	lat accel (4.1138 -> 5.1138): 1.0237884289
		+	</pre>
		+	: This maximums are achieved at rather odd velocities (6.4478, 4.1138) those aren't lateral velocities but actual velocities. Changing delta to 1, uses only integer values for speed, and the maximums are:
		+	<pre>
		+	lat deccel (6.0000 -> 4.0000): 2.0298153934
		+	lat accel (4.0000 -> 5.0000): 1.0237746471
		+	</pre>
		+
		+	: Hope this helps. --[[User:Zyx\|zyx]] 01:53, 30 September 2009 (UTC)

	===Max Escape Angle===		===Max Escape Angle===

← Older revision		Revision as of 01:28, 30 September 2009
Line 87:		Line 87:

	No, it's not the same Skilgannon. Consider the situation where a bot is moving at 8 speed perpendicular. In order to decelerate it can reduce it's speed by 2 units, AND it can also simultaneously rotate away from perpendicular in order to reduce the lateral velocity even further. --[[User:Rednaxela\|Rednaxela]] 04:00, 29 September 2009 (UTC)		No, it's not the same Skilgannon. Consider the situation where a bot is moving at 8 speed perpendicular. In order to decelerate it can reduce it's speed by 2 units, AND it can also simultaneously rotate away from perpendicular in order to reduce the lateral velocity even further. --[[User:Rednaxela\|Rednaxela]] 04:00, 29 September 2009 (UTC)
		+
		+	[[Rednaxela]] is right, I once calculated those values, but don't have them anymore. But they where somewhere around [2.02, 1.02]. --[[User:Zyx\|zyx]] 01:28, 30 September 2009 (UTC)

	===Max Escape Angle===		===Max Escape Angle===

← Older revision		Revision as of 01:13, 30 September 2009
Line 94:		Line 94:

	Er, I don't think "asin(enemy velocity/11)" makes sense. That would ''only'' make sense if they never exceeded their current speed. If you mean [[Maximum Escape Angle/Precise\|MEA via Precise Prediction]] (which does depend on current velocity), then some people seem to think it's good for guns but not for surfing. I don't think there's any kind of valid MEA that depends on current velocity other than "Precise MEA", or perhaps a variant on standard MEA that doesn't quite use precise prediction but considers how the enemy must accelerate (which would be almost as complicated as "Precise MEA" anyway I think) --[[User:Rednaxela\|Rednaxela]] 15:06, 29 September 2009 (UTC)		Er, I don't think "asin(enemy velocity/11)" makes sense. That would ''only'' make sense if they never exceeded their current speed. If you mean [[Maximum Escape Angle/Precise\|MEA via Precise Prediction]] (which does depend on current velocity), then some people seem to think it's good for guns but not for surfing. I don't think there's any kind of valid MEA that depends on current velocity other than "Precise MEA", or perhaps a variant on standard MEA that doesn't quite use precise prediction but considers how the enemy must accelerate (which would be almost as complicated as "Precise MEA" anyway I think) --[[User:Rednaxela\|Rednaxela]] 15:06, 29 September 2009 (UTC)
		+
		+	Ah yes, I forgot that this is Max escape angle :) --[[User:Starrynte\|Starrynte]] 01:13, 30 September 2009 (UTC)

	===Shooting out of bounds===		===Shooting out of bounds===

← Older revision		Revision as of 15:06, 29 September 2009
Line 92:		Line 92:

	No it isn't the same. Haven't test asin(enemy velocity/11) though. But one BIG problem is when enemy is currently stop, this code will yield zero as an MEA. Now enemy moves, wave hit, and we found that the angle offset is 40°, which is ~GF0.86 (40°/46.6°) with normal MEA, but it is (40°/0°), which is Double.POSITIVE_INFINITY in java, with your variable MEA. You see the point. [[User:Nat\|<span style="color:#099;">Nat</span>]] [[User talk:Nat\|<span style="color:#0a5;">Pavasant</span>]] 12:23, 29 September 2009 (UTC)		No it isn't the same. Haven't test asin(enemy velocity/11) though. But one BIG problem is when enemy is currently stop, this code will yield zero as an MEA. Now enemy moves, wave hit, and we found that the angle offset is 40°, which is ~GF0.86 (40°/46.6°) with normal MEA, but it is (40°/0°), which is Double.POSITIVE_INFINITY in java, with your variable MEA. You see the point. [[User:Nat\|<span style="color:#099;">Nat</span>]] [[User talk:Nat\|<span style="color:#0a5;">Pavasant</span>]] 12:23, 29 September 2009 (UTC)
		+
		+	Er, I don't think "asin(enemy velocity/11)" makes sense. That would ''only'' make sense if they never exceeded their current speed. If you mean [[Maximum Escape Angle/Precise\|MEA via Precise Prediction]] (which does depend on current velocity), then some people seem to think it's good for guns but not for surfing. I don't think there's any kind of valid MEA that depends on current velocity other than "Precise MEA", or perhaps a variant on standard MEA that doesn't quite use precise prediction but considers how the enemy must accelerate (which would be almost as complicated as "Precise MEA" anyway I think) --[[User:Rednaxela\|Rednaxela]] 15:06, 29 September 2009 (UTC)

	===Shooting out of bounds===		===Shooting out of bounds===