What is a grid system? How is it used?

Please don't tell me how to make one, I can look up a tutorial for that.

I would like to know how to use one, why you would use one, why are they useful? etc.

Hm.. they could be for making an animation in before a spell
It can also detect where a unit moves (ex.left,right,up,bottom)
You can center a location left of a unit and etc. They can be used for many things

The most effective grid systems can handle anything coordinate input/output related with a certain degree of accuracy. The most common grid systems are 1x1 tile accurate. Application example: the player is asked to enter the X and Y coordinates; then a unit is created at that point.

You know, tutorials often times tell you what the purpose of what you're doing is, so it's a bit pretentious to rule them out. For example, the first link below has example maps for static and mobile gridding.

http://z8.invisionfree.com/xBc_ProDuCtiOnZ/index.php?showtopic=241

http://www.staredit.net/wiki/Grid_Systems



They are usually used to save locations. Mobile grids are useful for creating something near a unit, but not directly next to it. Static grids are good for a nearly endless number of ways, but mostly being able to target specific spots without using a bunch of locations.

Thanks Roy. I guess what I ultimately wanted to know was if I should create a Mobile Grid for the hero in my RPG.

It seems that I probably should, but I'll wait to do it until I see a practical use, which I'm sure I will at some point.

I really like a map in my Tests Compilation that shows a grid in action, in slow motion, it's a good way of showing how they work.