How does the PhysicsServer2D generate a physical node that rebounds when encountering a wall

ysypnbh · April 24, 2024, 2:35pm

Godot Version

4.2

Question

You can refer to this code for reference.

godotengine/godot-demo-projects/blob/master/2d/bullet_shower/bullets.gd

extends Node2D
# This demo is an example of controling a high number of 2D objects with logic
# and collision without using nodes in the scene. This technique is a lot more
# efficient than using instancing and nodes, but requires more programming and
# is less visual. Bullets are managed together in the `bullets.gd` script.

const BULLET_COUNT = 500
const SPEED_MIN = 20
const SPEED_MAX = 80

const bullet_image = preload("res://bullet.png")

var bullets := []
var shape


class Bullet:
	var position = Vector2()
	var speed = 1.0
	# The body is stored as a RID, which is an "opaque" way to access resources.

This file has been truncated. show original

CharacterBody2D can this
var collide : KinematicCollision2D=move_and_collide(velocity)

if collide :
#print(collide.get_collider_rid())
var collide_direction = player_direction.bounce(collide.get_normal())

However, I’m not sure how to use a PhysicsServer2D node.

I sincerely hope that an expert can solve my doubts. I would be extremely grateful.