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3865888 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 | """Deterministic world specification (V6).
Meters, +Z up, origin at meadow center. Layout derives from seed; the spec
dict is hashed (spec_hash) and persisted with every backup.
"""
import hashlib
import json
from typing import Any, Dict, List
WORLD_SPEC_VERSION = "world3d_v1"
WORLD_SIZE = 40.0 # 40 x 40 m ground
def build_world_spec(seed: int = 7) -> Dict[str, Any]:
import numpy as _np
rng = _np.random.RandomState(seed)
trees = [{"id": f"tree_{i}", "x": round(float(x), 2), "y": round(float(y), 2)}
for i, (x, y) in enumerate([(-12.0, -9.0), (-9.5, -12.5), (11.0, -10.0),
(13.5, 6.0), (-13.0, 8.0), (9.0, 12.0)])]
rocks = [{"id": f"rock_{i}", "x": x, "y": y, "r": r} for i, (x, y, r) in
enumerate([(6.0, -4.0, 0.7), (-5.0, 5.5, 0.5), (2.0, 10.0, 0.9)])]
foods = [{"id": f"food_{i}", "x": round(float(rng.uniform(-14, 14)), 2),
"y": round(float(rng.uniform(-14, 14)), 2), "energy": 0.25}
for i in range(8)]
spec = {
"version": WORLD_SPEC_VERSION, "seed": int(seed), "size": WORLD_SIZE,
"ground": {"size": WORLD_SIZE},
"home": {"cx": 0.0, "cy": 10.0, "w": 7.0, "d": 6.0, "wall_h": 2.4,
"wall_t": 0.3, "door_w": 1.4, "door_side": "south"},
"furniture": [
{"id": "table", "kind": "static_box", "x": -1.5, "y": 10.5,
"sx": 1.6, "sy": 0.9, "sz": 0.75},
{"id": "crate_1", "kind": "dynamic_box", "x": 1.8, "y": 9.0,
"sx": 0.7, "sy": 0.7, "sz": 1.2, "mass": 4.0},
],
"trees": trees, "rocks": rocks, "foods": foods,
"water": {"id": "lake", "cx": -9.0, "cy": -2.0, "sx": 6.0, "sy": 4.0,
"note": "zone effect (thirst relief + speed factor), no fluid sim"},
"doors": [{"id": "home_door", "x": 0.0, "y": 7.0, "w": 1.4, "h": 2.0,
"hinge": "west", "state": "closed"}],
"spawn": {"x": 0.0, "y": 4.0, "heading": 0.0},
}
spec["spec_hash"] = hashlib.sha256(
json.dumps({k: v for k, v in spec.items() if k != "spec_hash"},
sort_keys=True).encode()).hexdigest()
return spec
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