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[Part 1] Why the Ground Check uses Raycasts.

Home Forums Video Game Tutorial Series Creating a Metroidvania in Unity [Part 1] Why the Ground Check uses Raycasts.

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    Kiefer Neo

    The main reason for using raycasts in the way we did for our Ground Check is so that we can have accurate Platform Edge Detection for future parts. Raycasts can be extended horizontally to detect the edge of platforms, enabling better handling of player character movement and preventing them from walking or falling off edges.

    Using raycasts for ground checks for our Ground Check has several other advantages that contribute to a more robust and reliable character movement system. Some of the key advantages include:

    Precision: Raycasts allow the precise detection of ground surfaces by shooting a ray downward from the player character by a length based on a float variable. This enables accurate determination of whether the character is on the ground or in the air, preventing unintended floating or falling issues.

    Customization: With raycasts, you have control over the length and direction of the rays, making it easy to adapt the ground check to fit various terrain types, slopes, and elevations in your platformer game.

    Flexibility: Raycasts work well with various types of platforms and can handle irregular shapes or uneven terrain, allowing the character to interact seamlessly with the game environment.

    Independent of Physics Settings: Raycasts are not affected by the physics settings like Rigidbody2D mass or gravity scale, which makes them consistent and reliable regardless of the player character’s physics properties.

    Immediate Feedback: Raycasts provide instant feedback on whether the character is grounded or not, allowing for immediate responses to player input, resulting in a more responsive and polished gameplay experience.

    In summary, using raycasts for ground checks in Unity platformer games offers precision, efficiency, flexibility, and reliability, resulting in smoother character movement, improved player experience, and better overall gameplay.

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