From a734600390574315e58caa94e4e09402ecd893fe Mon Sep 17 00:00:00 2001
From: Ilia Mashkov <hikkikomori7@gmail.com>
Date: Sun, 19 Jul 2026 17:41:51 +0300
Subject: [PATCH] =?UTF-8?q?refactor:=20=D0=A1=D0=BE=D0=B7=D0=B4=D0=B0?=
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---
 .../processBrickCollision.js                  | 74 +++++++++++++++++++
 .../processBrickCollision.test.js             | 33 +++++++++
 2 files changed, 107 insertions(+)
 create mode 100644 src/lib/processBrickCollision/processBrickCollision.js
 create mode 100644 src/lib/processBrickCollision/processBrickCollision.test.js

diff --git a/src/lib/processBrickCollision/processBrickCollision.js b/src/lib/processBrickCollision/processBrickCollision.js
new file mode 100644
index 0000000..ef2a3cf
--- /dev/null
+++ b/src/lib/processBrickCollision/processBrickCollision.js
@@ -0,0 +1,74 @@
+import { PERK_DROP_CHANCE, PERK_HEIGHT, PERK_WIDTH } from '../../config';
+import { Ball } from '../../entities/ball/ball';
+import { Game } from '../../game';
+import { calculateAABBCollision } from '../calculateAABBCollision/calculateAABBCollision';
+import { calculateDirection } from '../calculateDirection/calculateDirection';
+import { spawnRandomPerk } from '../spawnRandomPerk/spawnRandomPerk';
+
+/**
+ * Базовое взаимодействие мяча и кирпичей: меняет направление, разрушает кирпич и роняет бонус
+ * @param {Game} game экземпляр класса игры
+ * @param {Ball} ball мяч
+ * @returns {boolean | null} true, если произошло столкновение с кирпичом
+ */
+export function processBrickCollision(game, ball) {
+  try {
+    if (!(game instanceof Game)) {
+      throw new Error('Аргумент game должен быть экземпляром класса игра');
+    }
+
+    if (!(ball instanceof Ball)) {
+      throw new Error('Аргумент ball должен быть экземпляром класса мяч');
+    }
+
+    for (const brick of game.bricks) {
+      if (!brick.alive) {
+        continue;
+      }
+
+      const ballObject = {
+        left: ball.x - ball.radius,
+        right: ball.x + ball.radius,
+        top: ball.y - ball.radius,
+        bottom: ball.y + ball.radius,
+      };
+      const brickObject = {
+        left: brick.x,
+        right: brick.x + brick.width,
+        top: brick.y,
+        bottom: brick.y + brick.height,
+      };
+
+      const isCollided = calculateAABBCollision(ballObject, brickObject);
+
+      if (!isCollided) {
+        continue;
+      }
+
+      const directions = calculateDirection(ballObject, brickObject);
+
+      if (directions === null) {
+        continue;
+      }
+
+      ball.horizontalSpeed *= directions[0];
+      ball.verticalSpeed *= directions[1];
+      brick.kill();
+
+      if (!brick.alive && Math.random() < PERK_DROP_CHANCE) {
+        const perk = spawnRandomPerk(
+          brick.x + brick.width / 2 - PERK_WIDTH / 2,
+          brick.y + brick.height / 2 - PERK_HEIGHT / 2,
+        );
+        game.perks.push(perk);
+      }
+
+      return true;
+    }
+
+    return false;
+  } catch (err) {
+    console.error(err);
+    return null;
+  }
+}
diff --git a/src/lib/processBrickCollision/processBrickCollision.test.js b/src/lib/processBrickCollision/processBrickCollision.test.js
new file mode 100644
index 0000000..e0321fb
--- /dev/null
+++ b/src/lib/processBrickCollision/processBrickCollision.test.js
@@ -0,0 +1,33 @@
+import { Game } from '../../game';
+import { processBrickCollision } from './processBrickCollision';
+
+describe('processBrickCollision', () => {
+  it('Возвращает корректное значение при неверных типах аргументов', () => {
+    const game = new Game([[[1]]]);
+
+    expect(processBrickCollision(null, game.ball)).toBeNull();
+    expect(processBrickCollision(game, null)).toBeNull();
+  });
+
+  it('Возвращает креектное значение если мяч не касается кирпичей', () => {
+    const game = new Game([[[1]]]);
+    game.ball.x = 5;
+    game.ball.y = 500;
+
+    expect(processBrickCollision(game, game.ball)).toBe(false);
+  });
+
+  it('При столкновении разрушает кирпич и меняет направление мяча', () => {
+    const game = new Game([[[1]]]);
+    const brick = game.bricks[0];
+    game.ball.x = brick.x + game.ball.radius + 1;
+    game.ball.y = brick.y + brick.height + game.ball.radius + 1;
+    game.ball.horizontalSpeed = 0;
+    game.ball.verticalSpeed = -10;
+    game.ball.moveForward(1);
+
+    expect(processBrickCollision(game, game.ball)).toBe(true);
+    expect(brick.alive).toBe(false);
+    expect(game.ball.verticalSpeed).toBe(10);
+  });
+});