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Ground height and high-ground level at any point of the dota map.

A lane as a polyline: the point on it nearest to a creep, the heading there, and a walk of N units along it.

Where each enemy hero is while nobody sees him: the tick he left vision, his last cast in the fog, a teleport's landing, a position another script worked out, plus the enemy smokes.

Enemy casts the overlays and the dodger react to: which particle system or sound belongs to which ability, where its spot is, and its radius, width, speed and timing from valve's ability data; and for

判断单位能否从世界中的一点走到另一点：基于 GridNav 的可达性检查，带按调用方区分的缓存、每 tick 的寻路预算和玛尔斯竞技场的墙。

Neutral camp data the stacking packs share: valve's stack window for each camp, the trained stack data (camp positions, approach and pull points, difficulties) and the stacking routines that jungle, s