better UX for boats

src/core/execution/BoatAttackExecution.ts

@@ -160,7 +160,7 @@ export class AStar {
     compute(iterations: number): boolean {
         if (this.completed) return true;
 
-        while (!this.openSet.size()) {
+        while (!this.openSet.isEmpty()) {
             iterations--
             this.current = this.openSet.dequeue()!.tile;
             if (iterations <= 0) {

src/core/execution/BotSpawner.ts

@@ -1,7 +1,7 @@
 import {Cell, Game} from "../Game";
 import {PseudoRandom} from "../PseudoRandom";
 import {SpawnIntent} from "../Schemas";
-import {bfs} from "../Util";
+import {bfs, dist as dist} from "../Util";
 import {getSpawnCells} from "./Util";
 
 
@@ -40,7 +40,7 @@ export class BotSpawner {
     spawnBot(botName: string): SpawnIntent {
         const rand = this.random.nextInt(0, this.numFreeTiles);
         const spawn = this.freeTiles[rand];
-        bfs(this.gs.tile(spawn), 50).forEach(t => this.removeCell(t.cell()))
+        bfs(this.gs.tile(spawn), dist(50)).forEach(t => this.removeCell(t.cell()))
         const spawnIntent: SpawnIntent = {
             type: 'spawn',
             name: botName,