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Lerp between planet-only and total gravity

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This commit is contained in:
karl 2021-06-16 20:53:33 +02:00
parent 596f4ddbc5
commit 78db1629b5
1 changed files with 28 additions and 9 deletions
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37
Player.gd
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@ -3,25 +3,31 @@ extends KinematicBody
const MAX_VEL = 500.0
var acceleration := Vector3(0.0, -9.81, 0.0)
var velocity := Vector3(0.0, 0.0, 0.0)
var acceleration := Vector3.ZERO
var velocity := Vector3.ZERO
var move_accel = 60.0
var rotate_speed = 2.0
var drag = 0.05
export var move_accel = 60.0
export var rotate_speed = 2.0
export var drag = 0.05
# Jumping
var jumping := false
var time_since_jump_start := 0.0
var initial_jump_burst = 10.0
var jump_exponent = 0.05
export var initial_jump_burst = 10.0
export var jump_exponent = 0.05
export var almost_on_ground_length = 1.0
var current_target_velocity := Vector3.ZERO
export(NodePath) var solar_system
func _ready():
$GroundCheckRay.cast_to = Vector3.DOWN * almost_on_ground_length
func _input(event):
if event.is_action_pressed("jump") and is_on_ground():
jumping = true
@ -44,12 +50,25 @@ func apply_acceleration(acceleration):
func get_gravity_acceleration():
var total_gravity = get_node(solar_system).get_gravity_acceleration(transform.origin)
# If we're (almost) on the ground, accelerate only towards the planet we're on the ground of.
# Otherwise, get the total gravity of the solar system.
if $GroundCheckRay.is_colliding():
return get_node(solar_system).get_closest_gravity_acceleration(transform.origin)
# Lerp between the planet's own gravity and the
var planet_gravity = get_node(solar_system).get_closest_gravity_acceleration(transform.origin)
var distance_to_collision = ($GroundCheckRay.get_collision_point()
- $GroundCheckRay.global_transform.origin).length()
# This factor is 0.0 if the player is exactly on the ground, and 1.0 if they're just barely
# almost grounded
var factor = inverse_lerp(0.0, almost_on_ground_length, distance_to_collision)
return lerp(planet_gravity, total_gravity, factor)
else:
return get_node(solar_system).get_gravity_acceleration(transform.origin)
# If the player is not grounded: return the whole acceleration caused by the entire solar
# system.
return total_gravity
# Returns true if the player is currently (almost) on the ground.