[MadeMan]

area.JPG

You need to take coords from 2 places only (red dots on picture)

And then the code would be:

pawn Код:

stock IsPlayerInArea(playerid, Float:minX, Float:minY, Float:maxX, Float:maxY)
{
    new Float:pX, Float:pY, Float:pZ;
    GetPlayerPos(playerid, pX, pY, pZ);
    if(pX >= minX && pX <= maxX && pY >= minY && pY <= maxY)
        return true;
    else
        return false;
}