Tile expansion (#606)

## Description:
Modify tile expansion logic, creates more consistent expansion.

## Please complete the following:

- [x] I have added screenshots for all UI updates
- [x] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced
- [x] I understand that submitting code with bugs that could have been
caught through manual testing blocks releases and new features for all
contributors

## Please put your Discord username so you can be contacted if a bug or
regression is found:

<DISCORD USERNAME>
evan

---------

Co-authored-by: evan <openfrontio@gmail.com>

src/core/execution/AttackExecution.ts

@@ -21,13 +21,6 @@ export class AttackExecution implements Execution {
   private active: boolean = true;
   private toConquer: PriorityQueue<TileContainer> =
     new PriorityQueue<TileContainer>((a: TileContainer, b: TileContainer) => {
-      if (a.priority == b.priority) {
-        if (a.tick == b.tick) {
-          return 0;
-          // return this.random.nextInt(-1, 1)
-        }
-        return a.tick - b.tick;
-      }
       return a.priority - b.priority;
     });
   private random = new PseudoRandom(123);
@@ -227,8 +220,6 @@ export class AttackExecution implements Execution {
         this.target,
         this.border.size + this.random.nextInt(0, 5),
       );
-    // consolex.log(`num tiles per tick: ${numTilesPerTick}`)
-    // consolex.log(`num execs: ${this.mg.executions().length}`)
 
     while (numTilesPerTick > 0) {
       if (this.attack.troops() < 1) {
@@ -279,13 +270,9 @@ export class AttackExecution implements Execution {
         continue;
       }
       this.border.add(neighbor);
-      let numOwnedByMe = this.mg
+      const numOwnedByMe = this.mg
         .neighbors(neighbor)
         .filter((t) => this.mg.owner(t) == this._owner).length;
-      const dist = 0;
-      if (numOwnedByMe > 2) {
-        numOwnedByMe = 10;
-      }
       let mag = 0;
       switch (this.mg.terrainType(tile)) {
         case TerrainType.Plains:
@@ -301,8 +288,9 @@ export class AttackExecution implements Execution {
       this.toConquer.enqueue(
         new TileContainer(
           neighbor,
-          dist / 100 + this.random.nextInt(0, 2) - numOwnedByMe + mag,
-          this.mg.ticks(),
+          (this.random.nextInt(0, 7) + 10) *
+            (1 - numOwnedByMe * 0.5 + mag / 2) +
+            this.mg.ticks(),
         ),
       );
     }
@@ -355,6 +343,5 @@ class TileContainer {
   constructor(
     public readonly tile: TileRef,
     public readonly priority: number,
-    public readonly tick: number,
   ) {}
 }