oPlayer::draw_event

var oldLine = [];
// Запоминаем старые значения
array_copy(oldLine, 0, lineOfSight, 0, array_length(lineOfSight))
draw_self();

var lay_id_shadows = layer_get_id("ShadowTiles");
var map_id_shadows = layer_tilemap_get_id(lay_id_shadows);

// Клетка, на которой стоим
var xoCell = x div CellWidth;
var yoCell = y div CellHeight;

// Клетка, на которую смотрим
var xmCell = mouse_x div CellWidth;
var ymCell = mouse_y div CellHeight;

// Обновляем значения
lineOfSight = [];
var line = scrBresenham(xoCell, yoCell, xmCell, ymCell, global.grid);
array_copy(lineOfSight, 0, line, 0, array_length(line))

if !(array_equals(line, oldLine)) {
	var oldLen = array_length(oldLine);
	for (var i = 0; i < oldLen; ++i) {
		tilemap_set(map_id_shadows, 1,
		oldLine[i][0], oldLine[i][1]);
	}
	var newLen = array_length(line);
	for (var i = 0; i < newLen; ++i) {
		tilemap_set(map_id_shadows, 0,
		line[i][0], line[i][1]);
	}
}