| 1 | """Orbit Wars' built-in starter agent, as kaggle-environments ships it: half the ships of each planet to the nearest static planet it does not own.""" |
| 2 | import math |
| 3 | import random |
| 4 | from collections import namedtuple |
| 5 | |
| 6 | Planet = namedtuple("Planet", ["id", "owner", "x", "y", "radius", "ships", "production"]) |
| 7 | CENTER = 50.0 |
| 8 | ROTATION_RADIUS_LIMIT = 50.0 |
| 9 | |
| 10 | def agent(obs, config=None): |
| 11 | moves = [] |
| 12 | player = obs.get("player", 0) |
| 13 | planets = [Planet(*p) for p in obs.get("planets", [])] |
| 14 | |
| 15 | |
| 16 | static_targets = [] |
| 17 | for p in planets: |
| 18 | orbital_r = math.sqrt((p.x - CENTER) ** 2 + (p.y - CENTER) ** 2) |
| 19 | if orbital_r + p.radius >= ROTATION_RADIUS_LIMIT and p.owner != player: |
| 20 | static_targets.append(p) |
| 21 | |
| 22 | my_planets = [p for p in planets if p.owner == player] |
| 23 | for mp in my_planets: |
| 24 | if mp.ships <= 0: |
| 25 | continue |
| 26 | |
| 27 | closest = None |
| 28 | min_dist = float("inf") |
| 29 | for t in static_targets: |
| 30 | dist = math.sqrt((mp.x - t.x) ** 2 + (mp.y - t.y) ** 2) |
| 31 | if dist < min_dist: |
| 32 | min_dist = dist |
| 33 | closest = t |
| 34 | |
| 35 | if closest: |
| 36 | angle = math.atan2(closest.y - mp.y, closest.x - mp.x) |
| 37 | ships = mp.ships // 2 |
| 38 | if ships >= 20: |
| 39 | moves.append([mp.id, angle, ships]) |
| 40 | |
| 41 | return moves |
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