[General] The Angle of the Attack

[maxodors]

Can someone help me with the formula to determine from which angle the unit got attacked, please? I need an output between 0 and 360.

 

[Duckfarter]

Its not hard to determine the angle from which a unit is attacked.
Set Loc[1] = Position of attacking unit
Set Loc[2] = Position of attacked unit
Set Angle = Angle between Loc[2] and Loc[1]
call RemoveLocation(udg_Loc[1])
call RemoveLocation(udg_Loc[2])
Do you mean some way of determining the angle from the unit that is attacked in relation to where its facing and where the attacker is standing?

 

[maxodors]

Its not hard to determine the angle from which a unit is attacked.
Set Loc[1] = Position of attacking unit
Set Loc[2] = Position of attacked unit
Set Angle = Angle between Loc[2] and Loc[1]
call RemoveLocation(udg_Loc[1])
call RemoveLocation(udg_Loc[2])
Do you mean some way of determining the angle from the unit that is attacked in relation to where its facing and where the attacker is standing?

Sorry, forgot to mention. In relation to where it is facing. Also, I need it for X and Y coordinates.

 

[Duckfarter]

I cant wrap my head around these angles. I am about 100% sure that others have already dealt with this issue. Have you tried making some searches?

 

[maxodors]

I cant wrap my head around these angles. I am about 100% sure that others have already dealt with this issue. Have you tried making some searches?

I did, but I found only from the back.

 

[maxodors]

up

 

[A]mun]

Not sure what you looking for, can you give an example?
Because, the function is already in the editor:

• AngleTest
  • Events
    • Unit - A unit Is attacked
  • Conditions
  • Actions
    • Set VariableSet temp_real = (Facing of (Attacking unit))
    • Floating Text - Create floating text that reads (String(temp_real)) at (Position of (Attacking unit)) with Z offset 0.00, using font size 10.00, color (100.00%, 0.00%, 0.00%), and 0.00% transparency
    • Floating Text - Change (Last created floating text): Disable permanence
    • Floating Text - Change the lifespan of (Last created floating text) to 3.00 seconds
    • Floating Text - Change the fading age of (Last created floating text) to 3.00 seconds

The attacked event isn't really precise btw, you would be better off using Bribe's Damage System and fire angle calculations upon damage dealt.
I guess you are looking for backstab damage or front/side-only shield block?

 

[maxodors]

Not sure what you looking for, can you give an example?
Because, the function is already in the editor:

• AngleTest
  • Events
    • Unit - A unit Is attacked
  • Conditions
  • Actions
    • Set VariableSet temp_real = (Facing of (Attacking unit))
    • Floating Text - Create floating text that reads (String(temp_real)) at (Position of (Attacking unit)) with Z offset 0.00, using font size 10.00, color (100.00%, 0.00%, 0.00%), and 0.00% transparency
    • Floating Text - Change (Last created floating text): Disable permanence
    • Floating Text - Change the lifespan of (Last created floating text) to 3.00 seconds
    • Floating Text - Change the fading age of (Last created floating text) to 3.00 seconds

The attacked event isn't really precise btw, you would be better off using Bribe's Damage System and fire angle calculations upon damage dealt.
I guess you are looking for backstab damage or front/side-only shield block?

I am looking to determine the angle of the attack relative to the attacked unit facing. So, backstab would be somewhere between 30 and 330 degrees, and front attack somewhere between 150 and 210. I need the angle from which the unit got attacked as the output (from 0 to 360). Ideally, an efficient formula in Jass. The only problem I have is with the math part.

 

[Duckfarter]

I did, but I found only from the back.

I am pretty sure you can set the OutputAngle to OutputAngle + -180 for the front then.

 

[A]mun]

Found this old post:

[Solved] - Angles (how to detect a backstab attack)?

Hey guys, got a quick question which i am unsure of, how can i check if a unit is within say 60 angle range of another units facing angle? My problem is that if i were to get the units facing angle and have 2 reals for the angle +30 and angle -30, what if one of those angles go below 0.00 or...

www.hiveworkshop.com

 

[pr114]

57.296*math.atan(TargetUnitY-UnitY,TargetUnitX-UnitX)

 

[maxodors]

57.296*math.atan(TargetUnitY-UnitY,TargetUnitX-UnitX)

This does not take into account facing.

I am pretty sure you can set the OutputAngle to OutputAngle + -180 for the front then.

I don't need only back and front. As I said, I need an output from 0 to 360

Can someone help me, please? I don't believe no one had a similar problem. However, i can't find anything of the forum

 

[Duckfarter]

Maker posted a solution to detect the angle from which a unit is attacked in degrees from 0 to 360 in the thread A]mun posted.

 

[Dr Super Good]

1. Work out the angle the attack came from. This is what [db]east has posted.
2. Change frame of reference to be with respect to attacked unit's facing. This is done by subtracting the attacked units facing from the angle worked out in 1.
3. Convert it to within the desired range. I think this is done using the real based modulus operation with a modulus of 360.
4. If everything worked out the angle should be a number between 0 and 360 (not inclusive) as desired.

As an alternative to 3 and 4 for doing facing comparisons you might be able to use cosine or sine space for the comparison. This handles the cyclic nature of of the angular number space without needing to modulus or complicated comparisons.

 

[pr114]

This does not take into account facing.

?? You asked for formula to find angle of attack and that I gave.

Facing can be gotten by function GetUnitFacing.