81 lines
2.1 KiB
GDScript
81 lines
2.1 KiB
GDScript
@icon("uid://dek4dvcv5fyh5")
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extends RigidBody3D
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class_name BoatBody3D
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@export var float_force := 20.0
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@export var water_drag := 0.05
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@export var water_angular_drag := 0.05
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@onready var gravity:float = ProjectSettings.get_setting("physics/3d/default_gravity")
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@onready var probes = $ProbeContainer.get_children()
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var submerged := false
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var is_docked: bool = false
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@export var ocean : Ocean #= get_tree().get_nodes_in_group("ocean")[0]
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@export var max_thrust_force: float = 2048
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@export var max_steering: float = 128
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var steering: float = 0 # steering rudder angle in radians
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var thrust_force: float = 0 # forward thrust force in Newtons
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func _process(_delta):
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if Input.get_action_strength("move_forward") > 0.0:
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thrust()
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if Input.get_action_strength("turn_right") > 0.0:
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steer_right()
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if Input.get_action_strength("turn_left") > 0.0:
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steer_left()
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# Called when the node enters the scene tree for the first time.
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func _ready():
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add_to_group("boats",true)
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func _physics_process(delta):
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submerged = false
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for p in probes:
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if p.visible == true:
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var depth = ocean.get_water_level(p.global_position) - p.global_position.y
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if depth > 0:
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submerged = true
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apply_force(Vector3.UP * float_force * gravity * depth, p.global_position - global_position)
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#print("Applying force: "+str(Vector3.UP * float_force * gravity * depth)+" at "+ str(p.position) +"("+str(p)+")")
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## Code for user-input movement
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apply_central_force(self.global_transform.basis.x.normalized() * Vector3(1, 0, 1) * thrust_force * delta)
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#apply_torque(Vector3.UP * steering * delta)
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apply_torque(global_transform.basis.y.normalized() * steering * 0.05) # for sideways motion
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reset_forces()
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func _integrate_forces(state: PhysicsDirectBodyState3D):
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if submerged:
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state.linear_velocity *= 1 - water_drag
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state.angular_velocity *= 1 - water_angular_drag
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func thrust():
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if not is_docked:
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thrust_force = max_thrust_force
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func steer_right():
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if not is_docked:
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steering = -PI * max_steering
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func steer_left():
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if not is_docked:
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steering = PI * max_steering
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func reset_forces():
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thrust_force = 0
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steering = 0
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