Implement trainer battles and various changes

Implement trainer battles; add dialogue functionality; add random session seed for predictable random results; remove capitalization from text; add full party heal after every 10 waves

src/ui/pokeball-tray.ts

@@ -0,0 +1,116 @@
+import BattleScene from "../battle-scene";
+import Pokemon from "../pokemon";
+
+export default class PokeballTray extends Phaser.GameObjects.Container {
+  private player: boolean;
+
+  private bg: Phaser.GameObjects.NineSlice;
+  private balls: Phaser.GameObjects.Sprite[];
+
+  public shown: boolean;
+
+  constructor(scene: BattleScene, player: boolean) {
+    super(scene, player ? (scene.game.canvas.width / 6) : 0, player ? -72 : -144);
+    this.player = player;
+  }
+
+  setup(): void {
+    this.bg = this.scene.add.nineslice(0, 0, `pb_tray_overlay_${this.player ? 'player' : 'enemy'}`, null, 104, 4, 48, 8, 0, 0);
+    this.bg.setOrigin(this.player ? 1 : 0, 0);
+
+    this.add(this.bg);
+
+    this.balls = new Array(6).fill(null).map((_, i) => this.scene.add.sprite((this.player ? -83 : 76) + (this.scene.game.canvas.width / 6) * (this.player ? -1 : 1) + 10 * i * (this.player ? 1 : -1), -8, 'pb_tray_ball', 'empty'));
+
+    for (let ball of this.balls) {
+      ball.setOrigin(0, 0);
+      this.add(ball);
+    }
+
+    this.setVisible(false);
+    this.shown = false;
+  }
+
+  showPbTray(party: Pokemon[]): Promise<void> {
+    return new Promise(resolve => {
+      if (this.shown)
+        return resolve();
+
+      (this.scene as BattleScene).fieldUI.bringToTop(this);
+
+      this.x += 104 * (this.player ? 1 : -1);
+
+      this.bg.width = 104;
+      this.bg.alpha = 1;
+
+      this.balls.forEach((ball, b) => {
+        ball.x += (this.scene.game.canvas.width / 6 + 104) * (this.player ? 1 : -1);
+        let ballFrame = 'ball';
+        if (b >= party.length)
+          ballFrame = 'empty';
+        else if (!party[b].hp)
+          ballFrame = 'fainted';
+        else if (party[b].status)
+          ballFrame = 'status';
+        ball.setFrame(ballFrame);
+      });
+
+      this.scene.sound.play('pb_tray_enter');
+
+      this.scene.tweens.add({
+        targets: this,
+        x: `${this.player ? '-' : '+'}=104`,
+        duration: 500,
+        ease: 'Sine.easeIn',
+        onComplete: () => {
+          this.balls.forEach((ball, b) => {
+            this.scene.tweens.add({
+              targets: ball,
+              x: `${this.player ? '-' : '+'}=104`,
+              duration: b * 100,
+              ease: 'Sine.easeIn',
+              onComplete: () => this.scene.sound.play(b < party.length ? 'pb_tray_ball' : 'pb_tray_empty')
+            });
+          });
+        }
+      });
+    
+      this.setVisible(true);
+      this.shown = true;
+
+      this.scene.time.delayedCall(1100, () => resolve());
+    });
+  }
+
+  hide(): Promise<void> {
+    return new Promise(resolve => {
+      if (!this.shown)
+        return resolve();
+
+      this.balls.forEach((ball, b) => {
+        this.scene.tweens.add({
+          targets: ball,
+          x: `${this.player ? '-' : '+'}=${this.scene.game.canvas.width / 6}`,
+          duration: 250,
+          delay: b * 100,
+          ease: 'Sine.easeIn'
+        });
+      });
+
+      this.scene.tweens.add({
+        targets: this.bg,
+        width: 144,
+        alpha: 0,
+        duration: 500,
+        ease: 'Sine.easeIn'
+      });
+
+      this.scene.time.delayedCall(850, () => {
+        this.setVisible(false);
+        resolve();
+      });
+
+      this.shown = false;
+    });
+  };
+}