This system of prioritization is known as 'aggro' (aggression), and mastering it is the most critical mechanical skill in the game.
This article will dissect the mathematics of sightlines, retargeting, and unit hitboxes to help you manipulate the AI flawlessly.
How Units See the Arena
Every single unit in the game possesses a hidden 'sight range' value, usually measured in invisible tiles.
If a massive, slow-moving tank is lumbering toward your tower, you do not need to place your defense directly in front of it.
- Use the arena tiles as a visual guide.
- You must use a stun spell (like Zap) to force it to rescan.
- Adjust your placements for air threats.
The Geometry of Defense
Large tanks have massive hitboxes, meaning melee defenders can attack them from slightly further away than smaller troops.
The physical mass of the tank will actually push the Miner backward, forcing him to lose range on the tower and retarget onto the tank.
| Unit Category | AI Pattern |
|---|---|
| Tower Hunters | Completely ignore all enemy troops, making them incredibly easy to kite across the entire map with cheap structures |
| Melee Assassins | Often have dash abilities that lock onto targets from far away; must be intercepted before the dash animation begins |
Practice Makes Perfect
Reading about aggro ranges is completely different from actually executing pixel-perfect placements in the heat of a live match.
Once you internalize the invisible grid that governs the AI, the game slows down dramatically.
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