FPS Controller

demo/assets/scripts/player/player_controller.gd

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+class_name PlayerController extends CharacterBody3D
+
+@export var debug: bool = false
+@export_category("References")
+@export var camera: CameraController
+@export var camera_effects: CameraEffects
+@export var state_chart: StateChart
+@export var standing_collision: CollisionShape3D
+@export var crouching_collision: CollisionShape3D
+@export var crouch_check: ShapeCast3D
+@export var interaction_raycast: RayCast3D
+@export var step_handler: StepHandlerComponet
+@export_category("Movement Settings")
+@export_group("Easing")
+@export var acceleration: float = 0.2
+@export var deceleration: float = 0.5
+@export_group("Speed")
+@export var default_speed: float = 7.0
+@export var sprint_speed: float = 3.0
+@export var crouch_speed: float = -5.0
+@export_category("Jump Settings")
+@export var jump_velocity: float = 5.0
+@export var fall_velocity_threashold: float = -5.0
+
+var _input_dir: Vector2 = Vector2.ZERO
+var _movement_velocity: Vector3 = Vector3.ZERO
+var sprint_modifier: float = 0.0
+var crouch_modifier: float = 0.0
+var speed: float = 0.0
+var current_fall_velocity: float
+var previous_velocity: Vector3
+
+func _physics_process(delta: float) -> void:
+	previous_velocity = self.velocity
+	
+	if not is_on_floor():
+		velocity += get_gravity() * delta
+		
+	var speed_modifier = sprint_modifier + crouch_modifier
+	speed = default_speed + speed_modifier
+	
+	_input_dir = Input.get_vector("move_left", "move_right", "move_forward", "move_backward")
+	var current_velocity = Vector2(_movement_velocity.x, _movement_velocity.z)
+	var direction = (transform.basis * Vector3(_input_dir.x, 0, _input_dir.y)).normalized()
+	
+	if direction:
+		current_velocity = lerp(current_velocity, Vector2(direction.x, direction.z) * speed, acceleration)
+	else:
+		current_velocity = current_velocity.move_toward(Vector2.ZERO, deceleration)
+	
+	_movement_velocity = Vector3(current_velocity.x, velocity.y, current_velocity.y)
+	
+	velocity = _movement_velocity
+
+	move_and_slide()
+	
+	if is_on_floor():
+		step_handler.handle_step_climbing()
+
+func get_input_direction() -> Vector2:
+	return _input_dir
+
+func update_rotation(rotation_input) -> void:
+	global_transform.basis = Basis.from_euler(rotation_input)
+
+
+func sprint() -> void:
+	sprint_modifier = sprint_speed
+
+
+
+func walk() -> void:
+	sprint_modifier = 0.0
+
+
+func stand() -> void:
+	crouch_modifier = 0.0
+	standing_collision.disabled = false
+	crouching_collision.disabled = true
+
+
+func crouch() -> void:
+	crouch_modifier = crouch_speed
+	standing_collision.disabled = true
+	crouching_collision.disabled = false
+
+
+func jump() -> void:
+	velocity.y += jump_velocity
+
+
+func check_fall_speed() -> bool:
+	if current_fall_velocity < fall_velocity_threashold:
+		current_fall_velocity = 0.0
+		return true
+	
+	current_fall_velocity = 0.0
+	return false