Challenge 4: Godot blend

Write GDScript that uses blend in an AnimationTree.

Blending with Blend2D

In Godot the Blend2D node inside AnimationTree blends between 2 to 4 animations placed in a 2D space based on position. The blend position is set by assigning a Vector2 value to the blend_position property, and as speed increases the animation transitions toward running. This value is easily updated from GDScript.

agac.set("parameters/Blend2D/blend_position", Vector2(0.3, 0.0));

This allows smooth transitions between animations like walking and running.

Exercise Blend by speed

In the script BlendGirdisi, assign the $AnimationTree node to a variable named agac and define a variable named hiz with the value 0.7. Assign the value Vector2(hiz, 0.0) to the blend_position path and print the text "Blend: " joined with the hiz value using print.

Show example solution

extends Node

func _ready():
    var agac = $AnimationTree
    var hiz = 0.7
    agac.set("parameters/Blend2D/blend_position", Vector2(hiz, 0.0))
    print("Blend: " + str(hiz))

Exercise State transition

In the script GecisGirdisi, assign the $AnimationTree node to a variable named agac. Get the state machine into a variable named playback using the "parameters/playback" path, transition with playback.travel("ziplama") and print the text "Hedef: ziplama" with print.

Show example solution

extends Node

func _ready():
    var agac = $AnimationTree
    var playback = agac.get("parameters/playback")
    playback.travel("ziplama")
    print("Hedef: ziplama")

Test yourself

Which value type does the blend_position property of the Blend2D node accept?
```
agac.set("parameters/Blend2D/blend_position", Vector2(0.2, 0.0));
```
- int
- string
- Vector2
- float
Show answer

Vector2 — Since blend_position is a two dimensional position it takes a Vector2 value.

The vector value

    var hizVektoru = ____(0.5, 0.0)

Show answer

    var hizVektoru = Vector2(0.5, 0.0)

Blending terms

Blend2D

Blend 2-4 animations using 2D position
blend_position

The 2D position value used to blend
Vector2

A two dimensional vector value
GDScript

Godot's scripting language

Next lesson: Challenge 5: Final synthesis

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