Add defense commitment lock and defense-everywhere support

Defenses now work outside combat mode with stamina cost, recovery lock
(based on timing_window_ms), and broadcast to nearby players. Lock
prevents spamming defenses — you commit to the move. Stamina deduction
moved from encounter.defend() to do_defend command layer. Defense
commands registered with mode="*" instead of "combat".

src/mudlib/combat/commands.py

@@ -1,5 +1,6 @@
 """Combat command handlers."""
 
+import time
 from collections import defaultdict
 from pathlib import Path
 
@@ -81,15 +82,19 @@ async def do_attack(player: Player, target_args: str, move: CombatMove) -> None:
 async def do_defend(player: Player, _args: str, move: CombatMove) -> None:
     """Core defense logic with a resolved move.
 
+    Works both in and outside combat. Applies a recovery lock
+    (based on timing_window_ms) so defenses have commitment.
+
     Args:
         player: The defending player
         _args: Unused (defense moves don't take a target)
         move: The resolved combat move
     """
-    # Check if in combat
-    encounter = get_encounter(player)
-    if encounter is None:
-        await player.send("You're not in combat.\r\n")
+    now = time.monotonic()
+
+    # Commitment check: locked from previous defense
+    if player.defense_locked_until > now:
+        await player.send("You're still recovering!\r\n")
         return
 
     # Check stamina
@@ -97,9 +102,26 @@ async def do_defend(player: Player, _args: str, move: CombatMove) -> None:
         await player.send("You don't have enough stamina for that move.\r\n")
         return
 
-    # Queue the defense
-    encounter.defend(move)
-    await player.send(f"You attempt to {move.name}!\r\n")
+    # Apply lock and stamina cost
+    player.defense_locked_until = now + (move.timing_window_ms / 1000.0)
+    player.stamina -= move.stamina_cost
+
+    # If in combat, queue the defense on the encounter
+    encounter = get_encounter(player)
+    if encounter is not None:
+        encounter.defend(move)
+
+    # Broadcast to nearby players
+    from mudlib.commands.movement import send_nearby_message
+
+    await send_nearby_message(
+        player,
+        player.x,
+        player.y,
+        f"{player.name} {move.name}s!\r\n",
+    )
+
+    await player.send(f"You {move.name}!\r\n")
 
 
 def _make_direct_handler(move: CombatMove, handler_fn):
@@ -174,7 +196,7 @@ def register_combat_commands(content_dir: Path) -> None:
     # Register simple moves (roundhouse, sweep, duck, jump)
     for move in simple_moves:
         handler_fn = do_attack if move.move_type == "attack" else do_defend
-        mode = "*" if move.move_type == "attack" else "combat"
+        mode = "*"
         action = "Attack" if move.move_type == "attack" else "Defend"
         register(
             CommandDefinition(

src/mudlib/combat/encounter.py

@@ -69,16 +69,15 @@ class CombatEncounter:
             self.state = CombatState.TELEGRAPH
 
     def defend(self, move: CombatMove) -> None:
-        """Queue a defense move.
+        """Queue a defense move on the encounter.
+
+        Stamina cost and lock are handled by the command layer (do_defend).
 
         Args:
             move: The defense move to attempt
         """
         self.pending_defense = move
 
-        # Apply stamina cost
-        self.defender.stamina -= move.stamina_cost
-
     def tick(self, now: float) -> None:
         """Advance the state machine based on current time.
 

src/mudlib/entity.py

@@ -14,6 +14,7 @@ class Entity:
     pl: float = 100.0  # power level (health and damage multiplier)
     stamina: float = 100.0  # current stamina
     max_stamina: float = 100.0  # stamina ceiling
+    defense_locked_until: float = 0.0  # monotonic time when defense recovery ends
 
     async def send(self, message: str) -> None:
         """Send a message to this entity. Base implementation is a no-op."""

tests/test_combat_commands.py

@@ -1,10 +1,12 @@
 """Tests for combat commands."""
 
+import time
 from pathlib import Path
 from unittest.mock import AsyncMock, MagicMock
 
 import pytest
 
+import mudlib.commands.movement as movement_mod
 from mudlib.combat import commands as combat_commands
 from mudlib.combat.engine import active_encounters, get_encounter
 from mudlib.combat.moves import load_moves
@@ -21,6 +23,18 @@ def clear_state():
     players.clear()
 
 
+@pytest.fixture(autouse=True)
+def mock_world():
+    """Inject a mock world for send_nearby_message."""
+    fake_world = MagicMock()
+    fake_world.width = 256
+    fake_world.height = 256
+    old = movement_mod.world
+    movement_mod.world = fake_world
+    yield fake_world
+    movement_mod.world = old
+
+
 @pytest.fixture
 def mock_writer():
     writer = MagicMock()
@@ -154,25 +168,23 @@ async def test_attack_sends_telegraph_to_defender(player, target, punch_right):
 
 
 @pytest.mark.asyncio
-async def test_defense_only_in_combat(player, dodge_left):
-    """Test do_defend only works in combat mode."""
+async def test_defense_works_outside_combat(player, dodge_left):
+    """Test do_defend works outside combat (costs stamina, applies lock)."""
+    initial_stamina = player.stamina
     await combat_commands.do_defend(player, "", dodge_left)
 
-    player.writer.write.assert_called()
-    message = player.writer.write.call_args[0][0]
-    assert "not in combat" in message.lower()
+    assert player.stamina == initial_stamina - dodge_left.stamina_cost
+    assert player.defense_locked_until > 0
 
 
 @pytest.mark.asyncio
 async def test_defense_records_pending_defense(player, target, punch_right, dodge_left):
-    """Test do_defend records the defense move."""
+    """Test do_defend queues defense on encounter and costs stamina."""
     # Start combat
     await combat_commands.do_attack(player, "Vegeta", punch_right)
     player.writer.write.reset_mock()
 
-    # Switch to defender's perspective
-    target.writer = player.writer
-    target.mode_stack = ["combat"]
+    initial_stamina = target.stamina
 
     # Defend
     await combat_commands.do_defend(target, "", dodge_left)
@@ -181,23 +193,19 @@ async def test_defense_records_pending_defense(player, target, punch_right, dodg
     assert encounter is not None
     assert encounter.pending_defense is not None
     assert encounter.pending_defense.name == "dodge left"
+    assert target.stamina == initial_stamina - dodge_left.stamina_cost
 
 
 @pytest.mark.asyncio
-async def test_defense_insufficient_stamina(player, target, punch_right, dodge_left):
+async def test_defense_insufficient_stamina(player, dodge_left):
     """Test do_defend with insufficient stamina gives error."""
-    # Start combat
-    await combat_commands.do_attack(player, "Vegeta", punch_right)
-    target.writer = player.writer
-    target.mode_stack = ["combat"]
-    target.stamina = 1.0  # Not enough for dodge (costs 3)
+    player.stamina = 1.0  # Not enough for dodge (costs 3)
 
-    player.writer.write.reset_mock()
-    await combat_commands.do_defend(target, "", dodge_left)
+    await combat_commands.do_defend(player, "", dodge_left)
 
-    target.writer.write.assert_called()
-    message = target.writer.write.call_args[0][0]
-    assert "stamina" in message.lower()
+    player.writer.write.assert_called()
+    messages = [call[0][0] for call in player.writer.write.call_args_list]
+    assert any("stamina" in msg.lower() for msg in messages)
 
 
 # --- variant handler tests ---
@@ -320,3 +328,75 @@ async def test_switch_attack_sends_new_telegraph(
     target_msgs = [call[0][0] for call in target.writer.write.call_args_list]
     # Defender should get a new telegraph
     assert len(target_msgs) > 0
+
+
+# --- defense commitment tests ---
+
+
+@pytest.mark.asyncio
+async def test_defense_rejected_while_locked(player, dodge_left):
+    """Test defense rejected during recovery lock."""
+    await combat_commands.do_defend(player, "", dodge_left)
+    player.writer.write.reset_mock()
+
+    # Immediately try again — should be locked
+    await combat_commands.do_defend(player, "", dodge_left)
+
+    messages = [call[0][0] for call in player.writer.write.call_args_list]
+    assert any("still recovering" in msg.lower() for msg in messages)
+
+
+@pytest.mark.asyncio
+async def test_defense_works_after_lock_expires(player, dodge_left):
+    """Test defense works after recovery lock expires."""
+    await combat_commands.do_defend(player, "", dodge_left)
+
+    # Fast-forward past the lock
+    player.defense_locked_until = time.monotonic() - 1.0
+    player.writer.write.reset_mock()
+
+    await combat_commands.do_defend(player, "", dodge_left)
+
+    messages = [call[0][0] for call in player.writer.write.call_args_list]
+    # Should succeed, not say "still recovering"
+    assert not any("still recovering" in msg.lower() for msg in messages)
+    assert any("dodge left" in msg.lower() for msg in messages)
+
+
+@pytest.mark.asyncio
+async def test_defense_lock_uses_timing_window(player, dodge_left, moves):
+    """Test defense lock duration matches move's timing_window_ms."""
+    before = time.monotonic()
+    await combat_commands.do_defend(player, "", dodge_left)
+
+    expected_lock = dodge_left.timing_window_ms / 1000.0
+    # Lock should be roughly now + timing_window
+    assert player.defense_locked_until >= before + expected_lock - 0.1
+    assert player.defense_locked_until <= before + expected_lock + 0.5
+
+
+@pytest.mark.asyncio
+async def test_defense_in_combat_queues_on_encounter(
+    player, target, punch_right, dodge_left
+):
+    """Test defense in combat queues on encounter AND applies lock."""
+    await combat_commands.do_attack(player, "Vegeta", punch_right)
+
+    await combat_commands.do_defend(target, "", dodge_left)
+
+    encounter = get_encounter(target)
+    assert encounter is not None
+    assert encounter.pending_defense is dodge_left
+    assert target.defense_locked_until > 0
+
+
+@pytest.mark.asyncio
+async def test_defense_broadcast_to_nearby(player, target, dodge_left):
+    """Test defense broadcasts to nearby players."""
+    target.writer.write.reset_mock()
+
+    await combat_commands.do_defend(player, "", dodge_left)
+
+    # Target is at same coords, should get broadcast
+    target_msgs = [call[0][0] for call in target.writer.write.call_args_list]
+    assert any(player.name in msg for msg in target_msgs)

tests/test_combat_encounter.py

@@ -100,15 +100,15 @@ def test_defend_records_pending_defense(attacker, defender, punch, dodge):
     assert encounter.pending_defense is dodge
 
 
-def test_defend_applies_stamina_cost(attacker, defender, punch, dodge):
-    """Test defending costs stamina."""
+def test_defend_does_not_deduct_stamina(attacker, defender, punch, dodge):
+    """Test encounter.defend() does not deduct stamina (command layer does)."""
     encounter = CombatEncounter(attacker=attacker, defender=defender)
     encounter.attack(punch)
 
     initial_stamina = defender.stamina
     encounter.defend(dodge)
 
-    assert defender.stamina == initial_stamina - dodge.stamina_cost
+    assert defender.stamina == initial_stamina
 
 
 def test_tick_telegraph_to_window(attacker, defender, punch):

tests/test_entity.py

@@ -27,6 +27,7 @@ def test_entity_has_combat_stats():
     assert entity.pl == 100.0
     assert entity.stamina == 100.0
     assert entity.max_stamina == 100.0
+    assert entity.defense_locked_until == 0.0
 
 
 def test_entity_combat_stats_can_be_customized():