From a4c4e2a1929e8282fa4a7511ceb5b4f99b42334d Mon Sep 17 00:00:00 2001
From: Ilia Mashkov <hikkikomori7@gmail.com>
Date: Sun, 19 Jul 2026 14:31:35 +0300
Subject: [PATCH] =?UTF-8?q?feat(spawnRandomPerk):=20=D0=94=D0=BE=D0=B1?=
 =?UTF-8?q?=D0=B0=D0=B2=D0=BB=D0=B5=D0=BD=D0=B0=20=D1=84=D1=83=D0=BD=D0=BA?=
 =?UTF-8?q?=D1=86=D0=B8=D1=8F=20=D1=81=D0=BE=D0=B7=D0=B4=D0=B0=D0=BD=D0=B8?=
 =?UTF-8?q?=D1=8F=20=D1=81=D0=BB=D1=83=D1=87=D0=B0=D0=B9=D0=BD=D0=BE=D0=B3?=
 =?UTF-8?q?=D0=BE=20=D0=B1=D0=BE=D0=BD=D1=83=D1=81=D0=B0=20=D0=BF=D0=BE=20?=
 =?UTF-8?q?=D0=B7=D0=B0=D0=B4=D0=B0=D0=BD=D1=8B=D0=BC=20=D0=BA=D0=BE=D0=BE?=
 =?UTF-8?q?=D1=80=D0=B4=D0=B8=D0=BD=D0=B0=D1=82=D0=B0=D0=BC?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/config.js                                 |  6 ++++
 src/lib/spawnRandomPerk/spawnRandomPerk.js    | 28 +++++++++++++++++++
 .../spawnRandomPerk/spawnRandomPerk.test.js   | 24 ++++++++++++++++
 3 files changed, 58 insertions(+)
 create mode 100644 src/lib/spawnRandomPerk/spawnRandomPerk.js
 create mode 100644 src/lib/spawnRandomPerk/spawnRandomPerk.test.js

diff --git a/src/config.js b/src/config.js
index c61245a..bd1abe1 100644
--- a/src/config.js
+++ b/src/config.js
@@ -18,3 +18,9 @@ export const BRICK_HEIGHT = 10;
 
 export const BRICK_ROW_AMOUNT = 5;
 export const BRICK_COLUMN_AMOUNT = 20;
+
+export const PERK_WIDTH = 16;
+export const PERK_HEIGHT = 16;
+export const PERK_FALL_SPEED = 3;
+export const PERK_DROP_CHANCE = 0.3;
+export const PERK_BALL_SPEED_DECREASE = 2;
diff --git a/src/lib/spawnRandomPerk/spawnRandomPerk.js b/src/lib/spawnRandomPerk/spawnRandomPerk.js
new file mode 100644
index 0000000..8d97713
--- /dev/null
+++ b/src/lib/spawnRandomPerk/spawnRandomPerk.js
@@ -0,0 +1,28 @@
+import { PERK_FALL_SPEED, PERK_HEIGHT, PERK_WIDTH } from '../../config';
+import { Perk } from '../../entities/perk/perk';
+
+/**
+ * Типы бонусов
+ */
+const DROPPABLE_PERKS = ['slow'];
+
+/**
+ * Создает случайный бонус в заданной точке
+ * @param {number} x координата бонуса по оси X
+ * @param {number} y координата бонуса по оси Y
+ * @returns {Perk | null}
+ */
+export function spawnRandomPerk(x, y) {
+  try {
+    if (typeof x !== 'number' || typeof y !== 'number') {
+      throw new Error('Координаты бонуса должны являться числами');
+    }
+
+    const type = DROPPABLE_PERKS[Math.floor(Math.random() * DROPPABLE_PERKS.length)];
+
+    return new Perk(x, y, PERK_WIDTH, PERK_HEIGHT, type, PERK_FALL_SPEED);
+  } catch (err) {
+    console.error(err);
+    return null;
+  }
+}
diff --git a/src/lib/spawnRandomPerk/spawnRandomPerk.test.js b/src/lib/spawnRandomPerk/spawnRandomPerk.test.js
new file mode 100644
index 0000000..1e42b82
--- /dev/null
+++ b/src/lib/spawnRandomPerk/spawnRandomPerk.test.js
@@ -0,0 +1,24 @@
+import { PERK_FALL_SPEED, PERK_HEIGHT, PERK_WIDTH } from '../../config';
+import { Perk } from '../../entities/perk/perk';
+import { spawnRandomPerk } from './spawnRandomPerk';
+
+describe('spawnRandomPerk', () => {
+  it('Возвращает корректное значение при неверных типах аргументов', () => {
+    expect(spawnRandomPerk(null, 0)).toBeNull();
+    expect(spawnRandomPerk(0, null)).toBeNull();
+    expect(spawnRandomPerk('10', 0)).toBeNull();
+    expect(spawnRandomPerk(0, undefined)).toBeNull();
+  });
+
+  it('Создает бонус в заданной точке с размерами и скоростью из конфига', () => {
+    const perk = spawnRandomPerk(10, 20);
+
+    expect(perk).toBeInstanceOf(Perk);
+    expect(perk.x).toBe(10);
+    expect(perk.y).toBe(20);
+    expect(perk.width).toBe(PERK_WIDTH);
+    expect(perk.height).toBe(PERK_HEIGHT);
+    expect(perk.fallSpeed).toBe(PERK_FALL_SPEED);
+    expect(perk.alive).toBe(true);
+  });
+});