108 lines
3.7 KiB
GDScript
108 lines
3.7 KiB
GDScript
extends RigidBody3D
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class_name Car
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@export var road_path : RoadPath
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@export var forward_force: float = 100.0
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@export var backward_force: float = 50.0
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@export var steer_speed: float = 2.0
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@export var base_lateral_friction: float = 5.0
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@export var lateral_velocity_start_drift_threshold: float = 10.0
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@export var lateral_velocity_total_drift_threshold: float = 15.0
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@onready var forward_left: RayCast3D = $ForwardLeft
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@onready var forward_right: RayCast3D = $ForwardRight
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@onready var backward_right: RayCast3D = $BackwardRight
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@onready var backward_left: RayCast3D = $BackwardLeft
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@onready var forward_left_respawn: RayCast3D = $RaycastsRespawn/ForwardLeftRespawn
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@onready var forward_right_respawn: RayCast3D = $RaycastsRespawn/ForwardRightRespawn
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@onready var backward_right_respawn: RayCast3D = $RaycastsRespawn/BackwardRightRespawn
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@onready var backward_left_respawn: RayCast3D = $RaycastsRespawn/BackwardLeftRespawn
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var base_steer_speed: float
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var current_steer_speed = base_steer_speed
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var last_steer_input := 0.0
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var rotation_angle := 0.0
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var respawn_trans : Transform3D
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var thread: Thread = Thread.new()
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var steer_input = 0.0
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var air_time := 0.0
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func custom_gravity() -> Vector3:
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var closest_offset = road_path.curve.get_closest_offset(road_path.to_local(position))
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var closest_transform = road_path.curve.sample_baked_with_rotation(closest_offset, true, true)
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var closest_point = road_path.to_global(closest_transform.origin)
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return -closest_transform.basis.y
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func return_to_road():
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var closest_offset = road_path.curve.get_closest_offset(road_path.to_local(position))
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var closest_transform = road_path.curve.sample_baked_with_rotation(closest_offset, true, true)
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transform = respawn_trans
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position += closest_transform.basis.y * 2.0
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linear_velocity = Vector3.ZERO
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angular_velocity = Vector3.ZERO
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air_time = 0.0
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func _process(_delta: float) -> void:
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if Input.is_action_just_pressed("restart"):
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return_to_road()
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if Input.is_action_just_pressed("hardRestart"):
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get_tree().reload_current_scene()
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func _physics_process(delta: float) -> void:
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var move_input := Input.get_axis("back", "forward")
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var steer_input_brut := Input.get_axis("right", "left")
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steer_input = lerpf(steer_input, steer_input_brut, 0.1)
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var is_on_floor := backward_left_respawn.is_colliding() || backward_right_respawn.is_colliding() || forward_left_respawn.is_colliding() || forward_right_respawn.is_colliding()
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var is_all_wheel_on_floor := backward_left_respawn.is_colliding() && backward_right_respawn.is_colliding() && forward_left_respawn.is_colliding() && forward_right_respawn.is_colliding()
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# Doing custom gravity like a chad
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PhysicsServer3D.area_set_param(get_viewport().find_world_3d().space, PhysicsServer3D.AREA_PARAM_GRAVITY_VECTOR, custom_gravity())
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if is_all_wheel_on_floor:
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respawn_trans = transform
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if !is_on_floor:
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air_time += delta
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if air_time > 3:
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return_to_road()
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return
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air_time = 0.0
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# Movement
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if move_input > 0.0:
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apply_central_force(global_transform.basis.z * forward_force)
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elif move_input < 0.0:
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var break_or_backward = 2*backward_force if global_transform.basis.z.dot(linear_velocity) > 0 else backward_force
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apply_central_force(global_transform.basis.z * -break_or_backward)
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# Rotation
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rotation_angle = steer_input * delta
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rotate(global_transform.basis.y, rotation_angle)
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var velocity = linear_velocity
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var forward_dir = global_transform.basis.z
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if forward_dir.length_squared() == 0.0:
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return
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forward_dir = forward_dir.normalized()
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var forward_velocity = forward_dir * velocity.dot(forward_dir)
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var lateral_velocity = velocity - forward_velocity
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var lateral_friction_force = -lateral_velocity * base_lateral_friction
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apply_central_force(lateral_friction_force)
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