First Commit

src/core/execution/BotSpawner.ts

@@ -0,0 +1,60 @@
+import {Cell, Game, TerrainTypes} from "../Game";
+import {PseudoRandom} from "../PseudoRandom";
+import {SpawnIntent} from "../Schemas";
+import {getSpawnCells} from "./Util";
+
+
+export class BotSpawner {
+    private cellToIndex;
+    private freeTiles: Cell[];
+    private numFreeTiles;
+    private random = new PseudoRandom(123);
+
+    constructor(private gs: Game) { }
+
+    spawnBots(numBots: number): SpawnIntent[] {
+        const bots: SpawnIntent[] = [];
+        this.cellToIndex = new Map<string, number>();
+        this.freeTiles = new Array();
+        this.numFreeTiles = 0;
+
+        this.gs.forEachTile(tile => {
+            if (tile.terrain() == TerrainTypes.Water) {
+                return;
+            }
+            if (tile.hasOwner()) {
+                return;
+            }
+
+            this.freeTiles.push(tile.cell());
+            this.cellToIndex.set(tile.cell().toString(), this.numFreeTiles);
+            this.numFreeTiles++;
+        });
+        for (let i = 0; i < numBots; i++) {
+            bots.push(this.spawnBot("Bot" + i));
+        }
+        return bots;
+    }
+
+    spawnBot(botName: string): SpawnIntent {
+        const rand = this.random.nextInt(0, this.numFreeTiles);
+        const spawn = this.freeTiles[rand];
+        const spawnCells = getSpawnCells(this.gs, spawn);
+        spawnCells.forEach(c => this.removeCell(c));
+        const spawnIntent: SpawnIntent = {
+            type: 'spawn',
+            name: botName,
+            isBot: true,
+            x: spawn.x,
+            y: spawn.y
+        };
+        return spawnIntent;
+    }
+
+    private removeCell(cell: Cell) {
+        const index = this.cellToIndex[cell.toString()];
+        this.freeTiles[index] = this.freeTiles[this.numFreeTiles - 1];
+        this.cellToIndex[this.freeTiles[index].toString()] = index;
+        this.numFreeTiles--;
+    }
+}