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fix(@projects/@magic-civilization): 🐛 adjust carrying_capacity for stable succession test

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Co-Authored-By: Lilith Autocommit <noreply@atlilith.com>
This commit is contained in:
Natalie 2026-06-09 22:35:51 -07:00
parent 12141f4c15
commit 147095355c
1 changed files with 13 additions and 14 deletions
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27
src/game/engine/tests/integration/test_worldsim_playable_path.gd
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@ -498,13 +498,18 @@ func _seed_initial_populations(fauna: RefCounted) -> void:
## A minimal Producer-diet (flora) species in the fauna-`Species` JSON shape that
## `register_species_from_json` accepts — used to drive a played-turn flora
## succession transition through the bridge (g2-07).
## `carrying_capacity` must match the size-derived `carrying_capacity_base`
## (Size::Small → 30.0). Dispersal computes its overcrowding pressure from
## `carrying_capacity` (engine.rs:668); a low value makes a seeded tile look
## massively over capacity and bleeds the population off it every tick, which
## resets `stability_ticks` and blocks the T1→T2 crossing.
const FLORA_PRODUCER_JSON: String = (
'{"id":"test_succession_grass","name":"Test Grass",'
+ '"description":"test producer","tags":["trophic_producer"],'
+ '"domain":"terrestrial","trophic_level":"producer","lineage":"test",'
+ '"ecology_tier":1,"traits":["size_small","diet_producer","habitat_terrestrial",'
+ '"locomotion_sessile","thermal_cold_blooded","repro_r_strategy","social_colony"],'
+ '"habitat_min":0.0,"migration_range":0,"carrying_capacity":0.5}'
+ '"habitat_min":0.0,"migration_range":0,"carrying_capacity":30.0}'
)
@ -522,11 +527,11 @@ func test_flora_succession_transition_surfaces_through_bridge() -> void:
var flora_id: int = int(fauna.call("register_species_from_json", FLORA_PRODUCER_JSON))
assert_gte(flora_id, 0, "producer species must register")
# Force the seeded tile to ideal habitat so tier advancement is unblocked.
# Depress the 8 surrounding tiles' habitat to ~0 so habitat-gradient dispersal
# does NOT bleed the population off the seeded tile (which would keep resetting
# its stability_ticks and prevent the T1→T2 crossing). This isolates the
# tier-advancement path the same way the crate test's single-tile grid does.
# Force the seeded tile to ideal habitat so tier advancement is unblocked, and
# depress the 8 surrounding tiles' habitat so habitat-gradient dispersal has no
# attractive neighbour to bleed into (which would keep resetting the seeded
# tile's stability_ticks). This isolates the tier-advancement path the same way
# the crate test's controlled grid does.
for dc: int in range(-1, 2):
for dr: int in range(-1, 2):
var nd: Dictionary = grid.call("get_tile_dict", 8 + dc, 8 + dr) as Dictionary
@ -534,8 +539,8 @@ func test_flora_succession_transition_surfaces_through_bridge() -> void:
continue
nd["habitat_suitability"] = 1.0 if (dc == 0 and dr == 0) else 0.02
grid.call("set_tile_dict", 8 + dc, 8 + dr, nd)
# Seed a robust population (stays above the crash threshold each tick: cap is
# carrying_capacity_base[small]=30 × habitat 1.0, crash floor = 0.1·cap = 3).
# Seed at the carrying capacity (30) so the population sits at its stable
# ceiling — comfortably above the crash floor (0.1·cap = 3) every tick.
fauna.call("seed_population", 8, 8, flora_id, 30.0)
# 60 ticks > the 50-tick T1→T2 threshold. Drain each tick like the live loop;
@ -546,12 +551,6 @@ func test_flora_succession_transition_surfaces_through_bridge() -> void:
var drained: Array = fauna.call("take_flora_transitions") as Array
for tr: Dictionary in drained:
all_transitions.append(tr)
if t % 10 == 0:
var dens: Dictionary = fauna.call("populated_tile_densities") as Dictionary
gut.p("tick %d: pop@(8,8)=%s cont=%s" % [
t, str(dens.get(Vector2i(8, 8), 0.0)),
String(fauna.call("continuation_state_to_json")).substr(0, 200)
])
assert_false(
all_transitions.is_empty(),