Function
makeQuadtree
(pos: Vec2, width: number, height: number, maxObjects: number, maxLevels: number): QuadtreeMake a new quadtree
param pos- The position of the top level node
param width- The width of the top level node
param height- The height of the top level node
param maxObjects- The maximum amount of objects per node before splitting
param maxLevels- The maximum amount of levels
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