function InitializePath(source, goal) {

        this._pathfinder.InitializePath([source, 0xFF], goal);

        if (this._search_range != 0) {

            local source_x = AIMap.GetTileX(source);

            local source_y = AIMap.GetTileY(source);

            local goal_x = AIMap.GetTileX(goal);

            local goal_y = AIMap.GetTileY(goal);

 

            local N_x = source_x > goal_x ? goal_x : source_x;

            local N_y = source_y > goal_y ? goal_y : source_y;

            local S_x = source_x > goal_x ? source_x : goal_x;

            local S_y = source_y > goal_y ? source_y : goal_y;

 

            local min_freeform = AIMap.IsValidTile(0) ? 0 : 1;

            local max_freeform = min_freeform == 0 ? 3 : 2;

 

            this._min_x = N_x - this._search_range < min_freeform ? min_freeform : N_x - this._search_range;

            this._min_y = N_y - this._search_range < min_freeform ? min_freeform : N_y - this._search_range;

            this._max_x = S_x + this._search_range > AIMap.GetMapSizeX() - max_freeform ? AIMap.GetMapSizeX() - max_freeform : S_x + this._search_range;

            this._max_y = S_y + this._search_range > AIMap.GetMapSizeY() - max_freeform ? AIMap.GetMapSizeY() - max_freeform : S_y + this._search_range;

        }

    }

 

function Road::_IsInsideRangeEfficient(self, cur_tile,

        _AIMap = AIMap)

    if (!self._search_range) return true;

    local cur_tile_x = _AIMap.GetTileX(cur_tile);

    local cur_tile_y = _AIMap.GetTileY(cur_tile);

    return cur_tile_x >= self._min_x && cur_tile_x <= self._max_x && cur_tile_y >= self._min_y && cur_tile_y <= self._max_y;