public int[,] getFieldOfViewFromMap(int x, int y)
{
int[,] aField = new int[entity.visionRange * 2 + 1, entity.visionRange *2 + 1];
int mentalMapWidth = entity.getMentalMap().GetLength(0);
int mentalMapHeight = entity.getMentalMap().GetLength(1);
// If the mental map exist and if the vision range is greater than 0
if (entity.getMentalMap() != null && entity.visionRange > 0)
{
// We initialize the field of view
initialiseCurrentFieldOfView(aField);
int radiusSquare = entity.visionRange * entity.visionRange; // use to know the maximum distance a tile can have to be in the vision range
double distanceSquare; // use to know the distance of a tile from the x and y coordinate
//For each tile that could be in the vision range (a square around the x and y coordinate)
int width, height;
for (width = x - entity.visionRange; width <= x + entity.visionRange; width++)
{
for (height = y - entity.visionRange; height <= y + entity.visionRange; height++)
{
//We calculate his distance to the x and y coordinate
distanceSquare = Math.Pow(width - x, 2) + Math.Pow(height - y, 2);
//If it is in the vision range
if (distanceSquare < radiusSquare)
{
// If it doesn't go out of bounds
if (0 < width && width < mentalMapWidth && 0 < height && height < mentalMapHeight)
{
// We add it to the mental map
aField[width - x + entity.visionRange, height - y + entity.visionRange] = entity.getPointFromMentalMap(width, height);
}
}
}
}
}
return(aField);
}