Parameters
- Game Development course
- Intermediate
- Lesson 22/83
- 4 min
Learn to trigger transitions with Bool, Trigger and Float parameters.
Bool, Float, and Trigger Parameters
Animator Controller parameters control transition conditions using different data types. Bool represents two-state values, Float represents numeric values, and Trigger represents one-time events. Choose the parameter type that matches the animation behavior.
// Bool: isGrounded
// Float: verticalSpeed
// Trigger: takeDamageConnecting Parameters to Transition Conditions
You can use parameters created in the Parameters tab of the Animator window as Transition conditions. For example, a verticalSpeed value falling below a certain threshold can trigger a transition to a falling animation. Multiple conditions can also be defined for the same transition.
// verticalSpeed < 0
// isGrounded == falsePractice Set the Vertical Speed Parameter
Set the value of the Float parameter named verticalSpeed on the Animator component. Use a vertical speed value and then print the assigned value to the console.
Starter code
using UnityEngine;
public class VerticalSpeed : MonoBehaviour
{
public Animator animator;
void Update()
{
}
}Sample solution
using UnityEngine;
public class VerticalSpeed : MonoBehaviour
{
public Animator animator;
public float currentVerticalSpeed;
void Update()
{
animator.SetFloat("verticalSpeed", currentVerticalSpeed);
Debug.Log("Dikey hız güncellendi: " + currentVerticalSpeed);
}
}Expected output
Dikey hız güncellendi: 2
Questions and answers
Review the lesson questions together with their answers. To test yourself, solve the lesson interactively.
1 Which parameter type is suitable for tracking whether a character is touching the ground?
- AnimationClip
- Bool Correct answer
- Float
- Trigger
Explanation: Bool is used to track whether a character is grounded as true or false.
2 Event Parameter
Tek seferlik bir animasyon olayını temsil etmek için ____ parametresi kullanılır.Tek seferlik bir animasyon olayını temsil etmek için Trigger parametresi kullanılır.Explanation: Trigger is designed to activate one-time animation events.
3 Match Parameter Use Cases
| Term | Meaning |
|---|---|
isGrounded |
Indicates if character is grounded |
verticalSpeed |
Stores vertical movement speed |
takeDamage |
Triggers a damage animation event |
Threshold |
Boundary value for a numeric condition |