bugfix: ports not spawning on coastline

src/core/execution/PortExecution.ts

@@ -40,27 +40,13 @@ export class PortExecution implements Execution {
     if (this.port == null) {
       const tile = this.tile;
       const player = this.mg.player(this._owner);
-      if (!player.canBuild(UnitType.Port, tile)) {
+      const spawn = player.canBuild(UnitType.Port, tile);
+      if (spawn === false) {
         consolex.warn(`player ${player} cannot build port at ${this.tile}`);
         this.active = false;
         return;
       }
-      const spawns = Array.from(
-        this.mg.bfs(
-          tile,
-          manhattanDistFN(tile, this.mg.config().radiusPortSpawn()),
-        ),
-      ).sort(
-        (a, b) =>
-          this.mg.manhattanDist(a, tile) - this.mg.manhattanDist(b, tile),
-      );
-
-      if (spawns.length == 0) {
-        consolex.warn(`cannot find spawn for port`);
-        this.active = false;
-        return;
-      }
-      this.port = player.buildUnit(UnitType.Port, 0, spawns[0]);
+      this.port = player.buildUnit(UnitType.Port, 0, spawn);
     }
 
     if (!this.port.isActive()) {

src/core/game/PlayerImpl.ts

@@ -730,7 +730,12 @@ export class PlayerImpl implements Player {
   }
 
   portSpawn(tile: TileRef): TileRef | false {
-    const spawns = Array.from(this.mg.bfs(tile, manhattanDistFN(tile, 20)))
+    const spawns = Array.from(
+      this.mg.bfs(
+        tile,
+        manhattanDistFN(tile, this.mg.config().radiusPortSpawn()),
+      ),
+    )
       .filter((t) => this.mg.owner(t) == this && this.mg.isOceanShore(t))
       .sort(
         (a, b) =>