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"text": "Added cached constants BRICK_HALF_WIDTH, BRICK_HALF_HEIGHT, CANVAS_HALF_WIDTH, CANVAS_HALF_HEIGHT to avoid repeated division operations. Updated resetBall() to use CANVAS_HALF_WIDTH and CANVAS_HALF_HEIGHT. Refactored checkBrickCollision() to calculate brickCenterX and brickCenterY once and reuse for particles and floating text. Reduces computational overhead in game loop.",
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"created_at": "2026-01-09T09:41:10",
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"text": "Turn 18: Code optimization - caching calculations",
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