Calculates the closest FOV of an entity list

CalculateEntityClosestFOV.cs

void CalculateEntityClosestFOV(List<Entity> _listOfEntities) {

    	// We iterate through each item of the Entity list that was passed as an argument
        foreach (var enemy in _listOfEntities)
        {
        	// If entity != null, proceed
            if (enemy != null)
            {
            	// Get its position and set some constants that will create the quadrant around the entity:
                Vector3 _entityLocation = new Vector3(enemy.entityLocation.x, enemy.entityLocation.y, 0);
                int _entityVisibilityRadius = 3; 
                int _offsetQuadrant4 = (int)_entityLocation.x - _entityVisibilityRadius; // Top left corner of the entity quadrant. If were a clock, ir would be the 4th quarter.
                int _offsetQuadrant1 = (int)_entityLocation.y - _entityVisibilityRadius; // Top right corner of the enemy quadrant. If were a clock, ir would be the 1st quarter.

                // Loop through this quadrant
                for (int x = _offsetQuadrant4; x < _entityLocation.x + _entityVisibilityRadius; x++)
                {
                    for (int y = _offsetQuadrant1; y < _entityLocation.y + _entityVisibilityRadius; y++)
                    {
                    	// If is floor, set a new color
                        if (floorMap.GetTile(new Vector3Int(x, y, 0)) != null && floorMap.tag == "Floor")
                        {
                            _testing_closestFovMap.SetTile(new Vector3Int(x, y, 0), floorTile);
                            _testing_closestFovMap.SetColor(new Vector3Int(x, y, 0), Color.red);
                        }
                        // If is wall, set a new color
                        else if (wallMap.GetTile(new Vector3Int(x, y, 0)) != null && wallMap.tag == "Wall")
                        {
                            _testing_closestFovMap.SetTile(new Vector3Int(x, y, 0), wallTile);
                            _testing_closestFovMap.SetColor(new Vector3Int(x, y, 0), Color.red);
                        }
                    }
                }
            }
        }
    }