mtd/PCs/view_movement.gd

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GDScript3
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class_name ViewMovement extends Node3D
@export var player: Hero
@export_category("Bobbing")
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@export var camera: Camera3D
@export var focus_raycast: RayCast3D
@export var enable_head_bob: bool = true
@export var head_bob_max_effect_speed: float = 4.317
@export var head_bob_amplitude: float = 0.08
@export var head_bob_frequency: float = 8.0
@export var target_stabilisation: bool = false
@export_category("Strafe Tilting")
@export var enable_strafe_tilt: bool = false
@export var tilt_max_effect_speed: float = 4.317
@export var tilt_amount_x: float = 0.75
@export var tilt_amount_y: float = 0.0
var sample_point: float = 0.0
var speed_factor: float = 0.0
var trauma: float = 0.0
var trauma_recovery_speed: float = 0.7
var camera_shake: float = 0.0
var noise_sample: float = 0.0
var shake_speed: float = 50.0
var max_shake_angle: float = 45.0
var pitch_noise: FastNoiseLite = FastNoiseLite.new()
var yaw_noise: FastNoiseLite = FastNoiseLite.new()
var roll_noise: FastNoiseLite = FastNoiseLite.new()
var constant_trauma: float = 0.0
func _ready() -> void:
pitch_noise.noise_type = FastNoiseLite.TYPE_PERLIN
yaw_noise.noise_type = FastNoiseLite.TYPE_PERLIN
roll_noise.noise_type = FastNoiseLite.TYPE_PERLIN
pitch_noise.frequency = 0.03
yaw_noise.frequency = 0.03
roll_noise.frequency = 0.01
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var noise_seed: int = randi()
pitch_noise.seed = noise_seed
yaw_noise.seed = noise_seed + 1
roll_noise.seed = noise_seed + 2
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func _physics_process(delta: float) -> void:
if enable_head_bob and player.is_on_floor():
#TODO: maybe make the speed slower/faster on slopes?
var player_speed: float = Vector2(player.velocity.x, player.velocity.z).length()
speed_factor = lerp(speed_factor, player_speed / head_bob_max_effect_speed, 20.0 * delta)
else:
speed_factor = lerp(speed_factor, 0.0, 20.0 * delta)
func _process(delta: float) -> void:
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#trauma = max(0.0, trauma - ((1.0 / trauma_recovery_speed) * delta))
#camera_shake = pow(max(trauma, constant_trauma), 2.0)
#noise_sample += shake_speed * delta
#$Camera3D/ProgressBar.value = max(trauma, constant_trauma) * 100.0
#$Camera3D/ProgressBar2.value = camera_shake * 100.0
#if Input.is_action_just_pressed("damage"):
#add_trauma()
#if Input.is_action_just_pressed("big_damage"):
#add_trauma(1.0)
#if Input.is_action_just_pressed("increase_trauma"):
#constant_trauma = min(1.0, constant_trauma + 0.1)
#if Input.is_action_just_pressed("decrease_trauma"):
#constant_trauma = max(0.0, constant_trauma - 0.1)
sample_point += delta * head_bob_frequency * speed_factor
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var camera_translation: Vector3 = Vector3.ZERO
var camera_tilt: Vector3 = Vector3.ZERO
camera_translation = minecraft_translation(head_bob_amplitude * speed_factor)
camera_tilt += minecraft_tilt(head_bob_amplitude * speed_factor)
if target_stabilisation:
camera.look_at(focus_target())
if enable_strafe_tilt:
camera_tilt += get_strafe_tilt(player.velocity)
#var shake_vector: Vector3 = Vector3.ZERO
#shake_vector.x = deg_to_rad(pitch_noise.get_noise_1d(noise_sample) * camera_shake * max_shake_angle)
#shake_vector.y = deg_to_rad(yaw_noise.get_noise_1d(noise_sample) * camera_shake * max_shake_angle)
#shake_vector.z = deg_to_rad(roll_noise.get_noise_1d(noise_sample) * camera_shake * max_shake_angle)
#camera_tilt += shake_vector
camera.rotation = camera_tilt
translate_camera(camera_translation)
func hfov_to_vfov(hfov_degrees: float) -> void:
return rad_to_deg(2.0 * atan(tan(deg_to_rad(hfov_degrees) / 2.0) * 9.0 / 16.0))
func minecraft_translation(amplitude: float) -> Vector3:
return sample_u_shape(sample_point, amplitude, 0.7)
func minecraft_tilt(amplitude: float) -> Vector3:
var pitch_angle: float = deg_to_rad(5)
var roll_angle: float = deg_to_rad(2)
var x: float = -abs(sin(sample_point + (PI / 2))) * pitch_angle * amplitude
var z: float = sin(sample_point) * roll_angle * amplitude
return Vector3(x, 0.0, z)
func sample_sine(sample: float, amplitude: float) -> Vector3:
return Vector3(0.0, sin(sample) * amplitude, 0.0)
func sample_lemniscate(sample: float, amplitude: float, ratio: float = 1.0) -> Vector3:
var y: float = sin(sample) * amplitude
var x: float = (cos(sample / 2.0) * amplitude * 2.0) * ratio
return Vector3(x, y, 0.0)
func sample_u_shape(sample: float, amplitude: float, ratio: float = 1.0) -> Vector3:
var y: float = ((abs(sin(sample + (PI / 2.0)))) * amplitude) - (amplitude / 2.0)
var x: float = sin(sample) * amplitude * ratio
return Vector3(x, y, 0.0)
func translate_camera(offset: Vector3) -> void:
var target_position: Vector3 = Vector3.ZERO
target_position += global_transform.basis.x * offset.x
target_position += Vector3.UP * offset.y
target_position += global_transform.basis.z * offset.z
camera.global_position = global_position + target_position
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func focus_target() -> Vector3:
if focus_raycast.is_colliding():
return focus_raycast.get_collision_point()
else:
return focus_raycast.global_position + -focus_raycast.global_transform.basis.z * 30.0
#func tilt_camera(tilt: Vector3, speed: float) -> void:
##camera.rotation.x = lerp(camera.rotation.x, tilt.x, speed)
##camera.rotation.y = lerp(camera.rotation.y, tilt.y, speed)
##camera.rotation.z = lerp(camera.rotation.z, tilt.z, speed)
#camera.rotation.x = tilt.x
#camera.rotation.y = tilt.y
#camera.rotation.z = tilt.z
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func get_strafe_tilt(player_velocity: Vector3) -> Vector3:
var side_dot: float = player_velocity.normalized().dot(-global_transform.basis.z)
var front_dot: float = player_velocity.normalized().dot(-global_transform.basis.x)
var speed_factor: float = player_velocity.length() / tilt_max_effect_speed
var tilt_vector: Vector3 = Vector3.ZERO
tilt_vector.z = deg_to_rad(tilt_amount_x * front_dot * speed_factor)
tilt_vector.x = deg_to_rad(tilt_amount_y * -side_dot * speed_factor)
return tilt_vector
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func add_trauma(amount: float = 0.3) -> void:
trauma = min(1.0, trauma + amount)