Code(feat) fighter ai #17

Zitchas · 2023-04-20T22:45:08Z

Feature: This PR implements the RearAttack pattern for high speed ships as detailed in Revamp

Feature Details

This is an attack pattern aimed primarily at fighters, causing them to preferentially circle the target ship and focus on attacking the rear of it, thus keeping them out of the line of fire of any guns it might have.

It's not actually working yet, although it does build. I've been testing it with a job that spawns a vanguard with 3x the mass (thus slowing down its turning) and a pack of Terns to attack it (which have 3x the normal engines and their hull reduced to 0 mass, thus they move very fast)

Testing swizzles are using the finchtest ship sprite, which has lots of extra orange painted on it. cloaking red if in front default 0 if atSide salmon if notbehind blue if behind but too far away purplish if behind but too close neon green if behind and in range pink is all else

Zitchas · 2023-04-21T16:52:55Z

https://youtu.be/tB5eZiIUNOc
This is a short clip of a flight of test fighters attacking a test vanguard. The vanguard has +1000 mass compared to normal, and the fighters are actually terns whose anvil engines provide about 5x more thrust than usual. They also have double the drag to keep their top speed from getting too big. They are using a modified finch sprite with large swaths of orange painted onto it to make the swizzle changes extremely obvious. The code for the Rear Attack routine has a bunch of swizzle changes programmed into it so that we can see what part of the code they are in as they move around. Note, none of the terns have cloaks, so when they turn cloaking red they're just denoting that they are in the "in front" part of the code.

cloaking red if in front
orange if atSide
salmon if notbehind
blue if behind but too far away
purplish if behind but too close
neon green if behind and in range
pink is all else

Zitchas · 2023-04-25T13:02:55Z

Tried something new, and actually kind of got the desired behavior. Not entirely sure why it's working, but it is fairly consistent for the test job.

https://youtu.be/oxMLOLVIS8A

RisingLeaf

Are you going to use these variables?

RisingLeaf · 2023-04-26T19:12:37Z

source/AI.cpp

+{
+	int weaponsRange = 370; // attacker weapon range this will be passed in eventually
+	int targetTurretRange = target.GetAICache().TurretRange();
+	Point offset = target.Position() - target.Facing().Unit() * weaponsRange;


Suggested change

Point offset = target.Position() - target.Facing().Unit() * weaponsRange;

RisingLeaf · 2023-04-26T19:12:47Z

source/AI.cpp

+	Point southEastUnit(southUnit.X() + eastUnit.X(), southUnit.Y() + eastUnit.Y());
+	Point southEast = (target.Position() + southEastUnit * targetTurretRange / 1.41);
+
+	Point frontAvoid = (direction.Cross(ship.Facing().Unit()) < 0. ? northWest : northEast);


Suggested change

Point frontAvoid = (direction.Cross(ship.Facing().Unit()) < 0. ? northWest : northEast);

RisingLeaf · 2023-04-26T19:12:56Z

source/AI.cpp

+	Point southEast = (target.Position() + southEastUnit * targetTurretRange / 1.41);
+
+	Point frontAvoid = (direction.Cross(ship.Facing().Unit()) < 0. ? northWest : northEast);
+	Point rearAvoid = (direction.Cross(target.Facing().Unit()) > 0. ? southWest : southEast);


Suggested change

Point rearAvoid = (direction.Cross(target.Facing().Unit()) > 0. ? southWest : southEast);

RisingLeaf · 2023-04-26T19:13:05Z

source/AI.cpp

+	Point rearAvoid = (direction.Cross(target.Facing().Unit()) > 0. ? southWest : southEast);
+
+	bool isBehind = direction.Unit().Dot(target.Facing().Unit()) < -.90;
+	bool justLeft = direction.Unit().Dot(target.Facing().Unit()) < -.8 && direction.Cross(target.Facing().Unit()) > 0;


Suggested change

bool justLeft = direction.Unit().Dot(target.Facing().Unit()) < -.8 && direction.Cross(target.Facing().Unit()) > 0;

RisingLeaf · 2023-04-26T19:13:13Z

source/AI.cpp

+
+	bool isBehind = direction.Unit().Dot(target.Facing().Unit()) < -.90;
+	bool justLeft = direction.Unit().Dot(target.Facing().Unit()) < -.8 && direction.Cross(target.Facing().Unit()) > 0;
+	bool justRight = direction.Unit().Dot(target.Facing().Unit()) < -.8 && direction.Cross(target.Facing().Unit()) <= 0;


Suggested change

bool justRight = direction.Unit().Dot(target.Facing().Unit()) < -.8 && direction.Cross(target.Facing().Unit()) <= 0;

RisingLeaf · 2023-04-26T19:19:39Z

source/AI.cpp

+	bool justRight = direction.Unit().Dot(target.Facing().Unit()) < -.8 && direction.Cross(target.Facing().Unit()) <= 0;
+	bool inFront = direction.Unit().Dot(target.Facing().Unit()) > .75;
+
+	bool atSide = (!inFront && !isBehind);


Suggested change

bool atSide = (!inFront && !isBehind);

RisingLeaf · 2023-04-26T19:19:47Z

source/AI.cpp

+	bool tooClose = direction.Length() < weaponsRange * .9;
+	bool outerRadius = direction.Length() < weaponsRange * 2;
+	double reverseSpeed = ship.MaxReverseVelocity();
+	double speed = ship.MaxVelocity();


Suggested change

double speed = ship.MaxVelocity();

Zitchas · 2023-04-27T13:26:27Z

I don't know. Obviously they aren't being used right now, but they were used in VitalChip's original code to achieve more (and better) functionality than I am getting now. I've left them in for now because they might help me get to that better level. That being said, my brain's a bit fuzzy right now, so not sure when I'll be continuing work on this.

source/AI.cpp

TheGiraffe3 · 2024-09-12T04:20:35Z

I don't know. Obviously they aren't being used right now, but they were used in VitalChip's original code to achieve more (and better) functionality than I am getting now. I've left them in for now because they might help me get to that better level. That being said, my brain's a bit fuzzy right now, so not sure when I'll be continuing work on this.

Maybe just comment them out for now?

Thanks for spotting this! Co-authored-by: Loymdayddaud <[email protected]>

Zitchas · 2024-10-05T18:44:47Z

Are you going to use these variables?

Yes, I was intending to use them. Not sure about all of them or where exactly, but the AI is something that needs a lot of work and complexity.

Zitchas added 4 commits April 20, 2023 09:30

(3000-mass)/3500 or 0.1 if over 3000

4913eca

Change to < 2500

2ee13f0

white space removal

b0ac3e1

AttackRear

7525f98

Zitchas added the enhancement New feature or request label Apr 20, 2023

Zitchas added 6 commits April 20, 2023 16:56

whitespace

e6a9003

More stylistic fixes

814e622

style fixes

1e5e437

Fixing more whitespace

487d12b

A few additional commands

560faaa

Zitchas added 8 commits April 22, 2023 08:42

Merge remote-tracking branch 'upstream/master' into code(feat)-FighterAI

0936b18

Shortening the weaponsrange to match more typical fighter weapons

03368ca

Whitespace errors

b9c3a15

Merge branch 'experimental' into code(feat)-FighterAI

e3be745

Merge remote-tracking branch 'upstream/master' into code(feat)-FighterAI

617f55f

Lateral circling basic

2934c5a

Getting more of the intended behavior

37bd67f

More to the rear

867a285

1010todd mentioned this pull request Apr 26, 2023

Limited turret arc #18

Merged

RisingLeaf reviewed Apr 26, 2023

View reviewed changes

A tighter "isbehind" value for closer to fully at the rear positioning

845545c

Zitchas marked this pull request as draft April 29, 2023 15:00

Merge branch 'experimental' into code(feat)-FighterAI

39cf643

TheGiraffe3 suggested changes Sep 12, 2024

View reviewed changes

source/AI.cpp Outdated Show resolved Hide resolved

Merge branch 'experimental' into code(feat)-FighterAI

7159a93

Zitchas and others added 4 commits September 12, 2024 09:20

Apply suggestions from code review by TheGiraffe3

34ab72b

Thanks for spotting this! Co-authored-by: Loymdayddaud <[email protected]>

Merge branch 'experimental' into code(feat)-FighterAI

4fa77cb

Merge branch 'experimental' into code(feat)-FighterAI

bf27d35

Merge branch 'experimental' into code(feat)-FighterAI

b5d648a

Zitchas added 2 commits October 8, 2024 06:12

Merge branch 'experimental' into code(feat)-FighterAI

783c9c0

Merge branch 'experimental' into code(feat)-FighterAI

1dad564

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Code(feat) fighter ai #17

Code(feat) fighter ai #17

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Zitchas commented Apr 27, 2023

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Zitchas commented Oct 5, 2024

Code(feat) fighter ai #17

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Code(feat) fighter ai #17

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Zitchas commented Apr 20, 2023

Feature Details

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Zitchas commented Apr 27, 2023

TheGiraffe3 commented Sep 12, 2024

Zitchas commented Oct 5, 2024