Adding Circles to Regions

[Zeatherann]

There is no native to add a circle to a region, so how can this functionality be created in an efficient manner?

 

[aple]

I don't think circular regions exist in WarCraft III. You can determine if something comes within so much of a circular range of a point, but that's as close as you'll get and I think it has some major limitations.

I THINK You can also just add points into a circular shape and then make a region out of them. I think...I don't know if that works with more then just 4 points.

 

[Zeatherann]

Regions are not limited to rectangles, those are called rectsregion rect.

 

[sethmachine]

I don't think circular regions exist in WarCraft III. You can determine if something comes within so much of a circular range of a point, but that's as close as you'll get and I think it has some major limitations.

This would work. Then in your events that use enter/leave region and it's for the circular region, you check to make sure that whatever is entering your circular region is within X range of that point.

So you'd need a location and a region, along with a trigger condition specific to that location/circle/region.

 

[WaterKnight]

If you want to use the functionality of regions, you can approximate a circle of rectangles. The smallest cells of regions are 32*32. But that may be unperformant to set up or include some nasty maths. What do you exactly want to do? Maybe region is not the best solution for that.

 

[Zeatherann]

I want to create a Unit - Leaves Range event.

 

[Solu9]

I want to create a Unit - Leaves Range event.

Is it a possibility to preplace a dummy unit from which you can do the range check or does the region move?

 

[Chaosy]

In that case you could just loop and check distance every 0.01 seconds?

 

[Zeatherann]

The region will move with the unit, should the unit be moving. I am looking into a solution that involves lattice points of a circle.

 

[WaterKnight]

Then using a region won't help you much because you would have to adjust it onMove/periodically and removing cells does not trigger the leave event. There is no simple MoveRegion function and it would get overall expensive, imprecise and complicated. Better do what Chaosy suggested.