Fix goalie collision on failed saves by adding 500ms cooldown

When goalies fail to save shots, they now have a 500ms collision cooldown
to prevent the puck from bouncing off them repeatedly. This allows the
puck to continue into the goal after a failed save.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

src/entities/puck.js

@@ -12,6 +12,9 @@ class Puck {
         this.bounceCount = 0;
         this.trail = [];
         this.maxTrailLength = 10;
+
+        // Collision cooldown tracking
+        this.goalieCollisionCooldowns = new Map(); // Maps player ID to cooldown end time
     }
 
     update(deltaTime, gameState, players) {
@@ -91,6 +94,24 @@ class Puck {
         }
     }
 
+    isGoalieOnCooldown(goalie) {
+        const playerId = goalie.id || `${goalie.team}-${goalie.role}`;
+        const cooldownEnd = this.goalieCollisionCooldowns.get(playerId);
+        if (cooldownEnd && Date.now() < cooldownEnd) {
+            return true;
+        }
+        // Clean up expired cooldowns
+        if (cooldownEnd && Date.now() >= cooldownEnd) {
+            this.goalieCollisionCooldowns.delete(playerId);
+        }
+        return false;
+    }
+
+    setGoalieCooldown(goalie, durationMs = 500) {
+        const playerId = goalie.id || `${goalie.team}-${goalie.role}`;
+        this.goalieCollisionCooldowns.set(playerId, Date.now() + durationMs);
+    }
+
     checkBoardCollisions(gameState) {
         const rink = gameState.rink;
         let collision = false;
@@ -302,6 +323,11 @@ class Puck {
         let closestDistance = Infinity;
 
         players.forEach(player => {
+            // Skip goalies who are on collision cooldown
+            if (player.role === 'G' && this.isGoalieOnCooldown(player)) {
+                return;
+            }
+
             const distance = this.position.distance(player.position);
             const collisionDistance = this.radius + player.radius;
 
@@ -392,10 +418,13 @@ class Puck {
                 difficulty: difficulty
             });
         } else {
-            console.log("Failed save")
+            console.log("Failed save - setting collision cooldown")
             // Failed save - puck continues with reduced velocity (already bounced from collision)
             // The collision physics have already been applied, so the puck will continue toward the goal
             this.velocity = this.velocity.multiply(0.8); // Slightly reduce speed but let it continue
+
+            // Set collision cooldown to prevent immediate re-collision with goalie
+            this.setGoalieCooldown(goalie, 500); // 500ms cooldown
         }
     }
 
@@ -417,6 +446,9 @@ class Puck {
         this.lastTeamTouch = null;
         this.bounceCount = 0;
         this.trail = [];
+
+        // Clear all goalie collision cooldowns
+        this.goalieCollisionCooldowns.clear();
     }
 
     faceoffDrop(winningTeam, location, participants) {