How to detect units inside a shape

[neo_sluf]

For example i have an ability that will create a square shape using lightning.,.. now how i can damage enemies inside the square and how to detect them

For example i have an ability that will create a triangle shape using lightning.,.. now how i can damage enemies inside the triangle and how to detect them


For example i have an ability that will create a irregular shape using lightning.,.. now how i can damage enemies inside the irregular shape and how to detect them

Cause Unit - Group uses Circle

 

[jonhysone]

About Square ... CLEAN LEAKS AFTER!

• Actions
  • Set TempPoint_Caster = (Position of TempCaster)
  • Region - Center PlayerSquare <gen> on TempPoint_Caster
  • Set TempGroup = (Units in PlayerSquare <gen>)
  • Unit Group - Pick every unit in TempGroup and do (Actions)
    • Loop - Actions

About Triangle ... Can this be done? Maybe checking if 3 angles around player contain unit . Same thing about Irregular region :/

 

[Nichilus]

jonhy, your trigger won't work well - the square can have different angle than the region, which will bug that trigger.

Anyway, it can be detected, someone actually made a system for that - look here: http://www.wc3c.net/showthread.php?t=96543

 

[Spartipilo]

Find the logic between the Distance and the Angle from the center of the figure to the sides and corner of it (just poligons)

1- Place a Square inside a Circle.

2- You'll have the square sides on angles 0°, 90°, 180°, and 270° and the Square Corners on Angles 45°, 135°, 225°, and 315°. The distance between the center and the sides is the "hick" (cateto in Spanish) and the distance between the center and the corners is the hypotenuse.

3- Now you can see that the distacen between the center of the square and the sides/corners increase from 0° to 45°, and decrease from 45° to 90°, increase from 90° to 135°, and decrease from 135° to 225°, increase from 225° to 270°, and decrease from 270° to 315°, increase from 315° to 405° (The initial 45° again)

4- If the AoE of the Square is 500, Hicks will be AoE/2 = 250. The Hick^2 = 250*250 = 62500. The sum of both will be 125000. The Hypotenuse will be the SquareRoot of that value = 353.

local real AoE = 500
local real Radio = AoE/2
local real Hick = Radio*Radio
local real Hypo = SquareRoot(Hick*2)

5- Now the AoE of the Unit Pick is 603 (Hypo + Hick) AoE. Inside it you'll check the

6- Now you have 353 distance in the corners, and 250 in the mid of the sides. You also have the Angles of the Corners and Mid of the Sides. Next step is finding the relation between these, which I don't know

Once you find that relation you can make from Trinagles to X number of sides figure. The process is the same once you know how the variables are related. Now, for custom forms it's a bit harder. I'm not sure how to :/

Anyway this was just me thinking without deep knowledge of math and stuff. Check this link: http://www.wc3c.net/showthread.php?t=96543

 

[deathismyfriend]

use the system or use the max and minimum x / y values and check if the point is in those x/y coordinates by doing this.

if pX < maxX and pX > minX and pY < maxY and pY > minY then
    // do actions
endif

 

[Maker]

There is a thread somewhere, posted by Nestharus, that has code for the things you need.