Line data    Source code

       1             : /**
       2             :  * @file An Area is a set of Vector2D points and a cache to lookup membership quickly.
       3             :  */
       4             : 
       5             : function Area(points)
       6             : {
       7          10 :         this.points = deepfreeze(points);
       8             : 
       9          10 :         let mapSize = g_Map.getSize();
      10             : 
      11        4544 :         this.cache = new Array(mapSize).fill(0).map(() => new Uint8Array(mapSize));
      12          10 :         for (let point of points)
      13       23956 :                 this.cache[point.x][point.y] = 1;
      14             : }
      15             : 
      16           6 : Area.prototype.getPoints = function()
      17             : {
      18           3 :         return this.points;
      19             : };
      20             : 
      21           6 : Area.prototype.contains = function(point)
      22             : {
      23        1276 :         return g_Map.inMapBounds(point) && this.cache[point.x][point.y] == 1;
      24             : };
      25             : 
      26           6 : Area.prototype.getClosestPointTo = function(position)
      27             : {
      28           0 :         if (!this.points.length)
      29           0 :                 return undefined;
      30             : 
      31           0 :         let closestPoint = this.points[0];
      32           0 :         let shortestDistance = Infinity;
      33             : 
      34           0 :         for (let point of this.points)
      35             :         {
      36           0 :                 let currentDistance = point.distanceToSquared(position);
      37           0 :                 if (currentDistance < shortestDistance)
      38             :                 {
      39           0 :                         shortestDistance = currentDistance;
      40           0 :                         closestPoint = point;
      41             :                 }
      42             :         }
      43             : 
      44           0 :         return closestPoint;
      45             : };