How to detect what tile player is standing on in a tile-based game

Questions & Answers
1

I have spent two days on this problem and still cannot figure it out. I am trying to make the character slide across oil but I am having an issue with detecting whether he is on oil or not. It is a 2D game and therefore all game elements are 0 on the z-axis so Raycasts wont work. I have also tried determining by using the player co-ordinates to determine what tile the player is on but due to the movement system, the player isn’t exactly always on a tile which is an exact multiple of 1. Any help or advice will be appreciated.

2

As there is an issue with a multiple of 1 you would simply round down the players position.

For example: if the players position of x is 25.5 then you know he is on tile 25

tileNumber = MathF.FloorToInt(Player.position.x);

This could be accompanied by an integer array of all the oil tiles

int [] oilTiles= new int[]  {25,26,27};

A simple check can then be carried out to decide whether the player is on an oiled tile or not

if(oilTiles.Contains(tileNumber))
{
   PlayerSlide();
}
3

You can add trigger on tiles with oil. Create any static variable in your desired class . Set variable to true when you enter the tile with oil and set it to false when you leave it (Use onTriggerEnter and onTriggerExit ).