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⚙️ Methods & Parameters

Understanding how functions inside classes receive information

What Are Methods?

A method is a function that belongs to a class.
It describes something the object can do.

Example:

class Pirate {
    attack(target) {
        // method logic
    }
}

Here, attack is a method of the Pirate class.

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What Are Parameters?

Parameters are the input values a method needs in order to work.

They allow your method to react differently depending on what is passed in.

Example:

attack(target)

• target is a parameter
• It tells the method who the pirate is attacking

Without parameters, methods would always do the same thing.

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Why Use Methods With Parameters?

Parameters let you:

• Pass information into a method
• Control behavior dynamically
• Handle interactions between objects
• Reuse the same method for many situations

This is essential in games, simulations, and object‑oriented programming.

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Example: collisionHandler(other, direction)

A common pattern in games is a method that handles collisions.

class Player {
    collisionHandler(other, direction) {
        // `other` = the object we collided with
        // `direction` = where the collision came from
    }
}

What the parameters mean:

• other → the object the player bumped into
• direction → "left", "right", "up", "down"

This lets the method respond differently depending on the situation.

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Why?

Using methods with parameters shows that you understand:

• How objects interact
• How to pass data between objects
• How to design flexible, reusable code
• How to structure game logic cleanly

It’s a core skill in object‑oriented programming.