stick-the-quick/objects/Bumper/Bumper.gd

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GDScript3
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class_name Bumper extends Area3D
const BASE_SPIN_SPEED := 120.0
const MIN_LAUNCH_SPEED := 12.0
@export var launch_factor: float = 2.0
@onready var mesh := $'Mesh' as MeshInstance3D
@onready var audio_player := $'AudioStreamPlayer' as AudioStreamPlayer
func _ready() -> void:
body_entered.connect(propel)
mesh.set_instance_shader_parameter(
&'hue_shift',
launch_factor*MIN_LAUNCH_SPEED - 24.0
)
func propel(body: PhysicsBody3D) -> void:
if body is RigidBody3D:
var rbody := body as RigidBody3D
audio_player.play()
var launch_vector := -rbody.linear_velocity.project(
rbody.global_position + rbody.center_of_mass - global_position
)*launch_factor
if launch_vector.is_zero_approx():
launch_vector = Vector3.UP*launch_factor
elif launch_vector.length() < launch_factor*MIN_LAUNCH_SPEED:
launch_vector = (
launch_vector.normalized()*launch_factor*MIN_LAUNCH_SPEED
)
rbody.linear_velocity += launch_vector
func _process(delta: float) -> void:
global_rotation_degrees += Vector3.UP*BASE_SPIN_SPEED*launch_factor*delta