Summary - Input

Reinforce Input usage with a summary task.

Input Management Summary

Input handling in Unity directly determines the game's responsiveness and feel. For key states, Input.GetKey, Input.GetKeyDown, and Input.GetKeyUp are used, while Input.GetAxis is preferred for analog and directional movement. Mouse clicks and screen coordinates are accessed via GetMouseButton and mousePosition.

if (Input.GetKeyDown(KeyCode.Space)) Jump();
float h = Input.GetAxis("Horizontal");

Exercise Comprehensive Input Controller

Complete the character input logic: if Input.GetKeyDown(KeyCode.Space) is true, print Debug.Log("Zipla");. Then assign Input.GetAxis("Horizontal") to variable yatay and print Debug.Log("Eksen: " + yatay);.

Show example solution

using System;

public enum KeyCode { Space, Escape }

public static class Input
{
    public static bool GetKeyDown(KeyCode key) => key == KeyCode.Space;
    public static float GetAxis(string axis) => 1.0f;
}

public static class Debug
{
    public static void Log(object message) => Console.WriteLine(message);
}

public class Program
{
    public static void Main()
    {
        if (Input.GetKeyDown(KeyCode.Space))
        {
            Debug.Log("Zipla");
        }
        float yatay = Input.GetAxis("Horizontal");
        Debug.Log("Eksen: " + yatay);
    }
}

Test yourself

Which of the following returns true only on the first frame a key is pressed, rather than while being held?
- Input.GetKey
- Input.GetKeyDown
- Input.GetAxis
- Input.mousePosition
Show answer

Input.GetKeyDown — GetKeyDown returns true only on the initial frame the key is pressed; GetKey continues to return true as long as it is held.

Summary Fill in the Blank

if (Input.____(KeyCode.Escape))

Show answer

if (Input.GetKeyDown(KeyCode.Escape))

All Input Concepts

Input.GetKeyDown

Catches first frame a key is pressed
Input.GetAxis

Returns axis input value as float
Input.GetMouseButton

Checks if mouse button is held down
new Vector3(x, 0, z)

Creates movement vector from axes

Next lesson: What is a Rigidbody?

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