Breakdown
- Make a Line2D. One end of line is head and other end is tail.
- When user presses a position, the head lerps towards it until it reaches that position.
- After that, tail lerps towards head until it has reached the head.
- While it is happening, set the position of player to tail’s position each frame.
- Will write a detaield tutorial on it after sometime. For now, take the raw code.
Code
# Author: Mujtaba muhammadmujtaba150@gmail.com
# GitHub: github.com/mujtaba-io/
extends CharacterBody2D
const SPEED = 100.0
const JUMP_VELOCITY = -300.0
# Get the gravity from the project settings to be synced with RigidBody nodes.
var gravity = ProjectSettings.get_setting("physics/2d/default_gravity")
var rope : Line2D
var rope_head : Node2D
var is_triggered : bool = false
var is_grippling : bool = false
var source : Vector2
var destination : Vector2
func trigger_grippling() -> void:
is_triggered = true
func _ready():
rope = $Rope
rope_head = $Rope/Head
func _process(delta):
if is_triggered:
is_triggered = false
is_grippling = true
destination = get_global_mouse_position() * global_transform
source = self.position
# If attempted to gripple below horizontal, do nothing
if destination.dot(Vector2.UP) < 0:
is_triggered = false
is_grippling = false
rope.points[0] = Vector2.ZERO
rope.points[1] = Vector2.ZERO
rope.position = Vector2.ZERO
if is_grippling:
if not rope.points[1].distance_to(destination) < 1:
rope.points[1] = lerp(rope.points[1], destination, 0.3)
else:
rope.points[0] = lerp(rope.points[0], destination, 0.2)
self.position = rope.points[0] + source
if rope.points[0].distance_to(destination) < 1:
is_grippling = false
rope.points[0] = Vector2.ZERO
rope.points[1] = Vector2.ZERO
rope.position = self.position
rope.position = -rope.points[0]
rope_head.position = rope.points[1]
func _physics_process(delta):
# Add the gravity.
if not is_on_floor():
velocity.y += gravity * delta
# Handle Jump.
if Input.is_action_just_pressed("ui_accept") and is_on_floor():
velocity.y = JUMP_VELOCITY
if Input.is_action_just_pressed("shift_key"):
trigger_grippling()
# Get the input direction and handle the movement/deceleration.
# As good practice, you should replace UI actions with custom gameplay actions.
var direction = Input.get_axis("ui_left", "ui_right")
if direction:
velocity.x = direction * SPEED
else:
velocity.x = move_toward(velocity.x, 0, SPEED)
move_and_slide()Link to github repo.