How to Make Double Press Run/Dash in Godot4

Introduction

In this tutorial, you will learn how to implement a double press mechanism in Godot 4 that allows your character to run or dash using the same key. This functionality enhances gameplay by enabling fluid movement transitions between walking and running, making your character more responsive and dynamic. By the end of this guide, you will have a solid understanding of how to set this up in your game.

Step 1: Set Up Your Project

• Open Godot 4 and create a new project or open an existing one.
• Ensure you have a character scene ready, which includes a KinematicBody2D or CharacterBody2D node.
• Add a script to your character node where you will implement the double press logic.

Step 2: Define Input Actions

• Go to the "Project" menu and select "Project Settings."
• Navigate to the "Input Map" section.
• Add the following actions if they don’t already exist:
  • ui_up (or the key you want to use for running)

This action will be used for both walking and running.

Step 3: Implement Input Handling

• In your character script, define variables to track the input state and timing:

var can_run = false
var last_press_time = 0.0
var double_press_delay = 0.3  # Time frame for double press

• In the _process(delta) function, check for input and implement the double press logic:

func _process(delta):
    if Input.is_action_just_pressed("ui_up"):
        if OS.get_ticks_msec() - last_press_time < double_press_delay * 1000:
            can_run = true  # Allow running after double press
        last_press_time = OS.get_ticks_msec()

Step 4: Implement Movement Logic

• Still within your character script, add logic to handle walking and running based on the can_run variable:

var speed = 200  # Walking speed
var run_speed = 400  # Running speed
var motion = Vector2.ZERO

func _physics_process(delta):
    motion = Vector2.ZERO  # Reset motion each frame

    # Handle walking and running
    if can_run:
        motion.x += run_speed * Input.get_action_strength("ui_right") - Input.get_action_strength("ui_left")
    else:
        motion.x += speed * Input.get_action_strength("ui_right") - Input.get_action_strength("ui_left")

    # Move the character
    move_and_slide(motion)

Step 5: Reset Running State

• To ensure the character stops running, you may want to reset the can_run variable after a period or when the character stops moving. You can do this by modifying your _process(delta) function:

if motion.length() == 0:
    can_run = false  # Reset can_run if not moving

Conclusion

You have successfully implemented a double press mechanism in Godot 4 that allows your character to transition seamlessly between walking and running. This feature enhances the player experience and adds depth to the character's movement.

Key Takeaways

• Use the Input Map to set up actions for movement.
• Track input timing to determine double presses.
• Control movement speed based on input state.

Next Steps

You can further enhance this mechanic by adding animations for running and walking or adjusting the speed settings to fit your game's style. Experiment with different input keys or add more complex movement behaviors to enrich your game's controls!