1 files changed, 63 insertions, 0 deletions

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+from collections.abc import Callable
+from typing import TYPE_CHECKING
+
+from BaseClasses import CollectionState, Region
+from .player_logic import AccessRequirements
+
+if TYPE_CHECKING:
+    from . import Lingo2World
+
+
+def lingo2_can_satisfy_requirements(state: CollectionState, reqs: AccessRequirements, regions: list[Region],
+                                    world: "Lingo2World") -> bool:
+    if not all(state.has(item, world.player) for item in reqs.items):
+        return False
+
+    if not all(state.has(item, world.player, amount) for item, amount in reqs.progressives.items()):
+        return False
+
+    if not all(state.can_reach_region(region_name, world.player) for region_name in reqs.rooms):
+        return False
+
+    if not all(state.can_reach(region) for region in regions):
+        return False
+
+    for letter_key, letter_level in reqs.letters.items():
+        if not state.has(letter_key, world.player, letter_level):
+            return False
+
+    if reqs.cyans:
+        if not any(state.has(letter, world.player, amount)
+                   for letter, amount in world.player_logic.double_letter_amount.items()):
+            return False
+
+    if len(reqs.or_logic) > 0:
+        if not all(any(lingo2_can_satisfy_requirements(state, sub_reqs, [], world) for sub_reqs in subjunction)
+                   for subjunction in reqs.or_logic):
+            return False
+
+    if reqs.complete_at is not None:
+        completed = 0
+        checked = 0
+        for possibility in reqs.possibilities:
+            checked += 1
+            if lingo2_can_satisfy_requirements(state, possibility, [], world):
+                completed += 1
+                if completed >= reqs.complete_at:
+                    break
+            elif len(reqs.possibilities) - checked + completed < reqs.complete_at:
+                # There aren't enough remaining possibilities for the check to pass.
+                return False
+        if completed < reqs.complete_at:
+            return False
+
+    return True
+
+def make_location_lambda(reqs: AccessRequirements, world: "Lingo2World",
+                         regions: dict[str, Region]) -> Callable[[CollectionState], bool]:
+    # Replace required rooms with regions for the top level requirement, which saves looking up the regions during rule
+    # checking.
+    required_regions = [regions[room_name] for room_name in reqs.rooms]
+    new_reqs = reqs.copy()
+    new_reqs.rooms.clear()
+    return lambda state: lingo2_can_satisfy_requirements(state, new_reqs, required_regions, world)