Este video tutorial cubre el uso del sistema de física 2D integrado en Godot 3. Cubriremos colisiones simples usando Area2D, luego simulaciones físicas completas usando cuerpos rígidos, cuerpos cinemáticos y cuerpos estáticos, mostrando cómo responder a colisiones usando código. Finalmente, observamos las máscaras y capas de colisión para controlar qué objetos físicos chocan con otros objetos en su simulación.
El video
Activos y muestras de código
Gravedad.gd
extends Node
func _ready():
pass
func _process(delta):
#impulsePoint is the position relative to the objects center to apply the impulse
var impulsePoint = Vector2(0.0,$RigidBody2D/CollisionShape2D.shape.extents.y/2)
#The impulse amount is impulse * mass added directly to the linear velocity
if Input.is_mouse_button_pressed(BUTTON_LEFT):
$RigidBody2D.apply_impulse(impulsePoint,Vector2(0,-10))
if Input.is_mouse_button_pressed(BUTTON_RIGHT):
$RigidBody2D.apply_impulse(impulsePoint,Vector2(0,10))
func _on_RigidBody2D_body_entered(body):
print("Collision with " + body.get_name())
CircleShapeController.gd
extends Area2D
func _process(delta):
if Input.is_key_pressed(KEY_RIGHT):
self.move_local_x(5)
if Input.is_key_pressed(KEY_LEFT):
self.move_local_x(-5)
if Input.is_key_pressed(KEY_UP):
self.move_local_y(-5)
if Input.is_key_pressed(KEY_DOWN):
self.move_local_y(5)
pass
func _on_Area2D_area_entered(area):
print("Entered area!")
func _on_Area2D_area_exited(area):
print("Area exited")
CinemáticaCuerpo2d.gd
extends KinematicBody2D
func _physics_process(delta):
var moveBy = Vector2(0,0)
if Input.is_key_pressed(KEY_LEFT):
moveBy = Vector2(-5,0)
if Input.is_key_pressed(KEY_RIGHT):
moveBy = Vector2(5,0)
if Input.is_key_pressed(KEY_UP):
moveBy = Vector2(0,-5)
if Input.is_key_pressed(KEY_DOWN):
moveBy = Vector2(0,5)
self.move_and_collide(moveBy)
KinematicBody2dSlide.gd
extends KinematicBody2D
var priorFrame = Vector2(0,0)
func _physics_process(delta):
var moveBy = Vector2(0,0)
if Input.is_key_pressed(KEY_LEFT):
moveBy = Vector2(-50,0)
if Input.is_key_pressed(KEY_RIGHT):
moveBy = Vector2(50,0)
if Input.is_key_pressed(KEY_UP):
moveBy = Vector2(0,-250)
if Input.is_key_pressed(KEY_DOWN):
moveBy = Vector2(0,50)
self.move_and_slide(moveBy,Vector2(0,-1))
if(is_on_floor()):
print("Currently on Floor")
# If we aren't currently on the floor, lets simulate gravity to pull us downwards
else:
self.move_and_collide(Vector2(0,1))
if(is_on_ceiling()):
print("Currently on Ceiling")
if(self.get_slide_count() > 0):
var collide = self.get_slide_collision(0).collider
print(collide.rotation)
if collide.is_class("StaticBody2D"):
self.rotation = collide.rotation
