Problem with flipping the player in the correct angle after wall bounce.

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Problem with flipping the player in the correct angle after wall bounce.

python3xdev

Hello, I am creating a 'flappy bird' type game and I have run into some player issues. Currently the user can press the spacebar to make the bird flap, when the player reaches the left or right side of the screen, a bounce happens, which will send the player in the opposite direction. I have managed to make the wall bounce and animations happen, but when the player bounces off a wall, the angle in which the player is facing doesn't seem right. I tried multiplying the rotation_degrees by -1 and I can see it work for a short amount of time, but then it changes almost instantly to the incorrect angle. (I think some other part of my code is doing this, but I am not sure which part.)

I have attached a ZIP file with my Godot project. Not many things in the project yet. Only 2 scenes (Player and Main) and one script file for the player (~100 lines of GDScript). Its kind of hard to explain everything in text, if you decide to download and run the game, you will understand what I am talking about.

P.S. I am a beginner. This is my first time using Godot, and my first time using Godot's Forum.

EDIT: In the players script on line 49 I am using a print statement to see how many times this area of code runs.

flame-cube

I think there is a way to just directly flip the sprite? something like $sprite.flip_h

python3xdev

Yes, this works for flipping the sprite and plays the animation in the opposite direction. But the problem is when the player hits the wall facing upwards the code I have currently makes them look and other way & to the ground. (I tried using flip_h like you said, this gave me the same result)

My goal is to mirror flip the players sprite on a wall bounce, flip_h should work but some of my other code is stopping it from working. (might need to change the ang_vel_val, max_rotation_degrees?)

edit: This piece of code here stops the player from rotating further that allowed, this might be the problem?:

# Rotation
if flying_right:
	if rotation_degrees <= -max_rotation_degrees:
		angular_velocity = 0
		rotation_degrees = -max_rotation_degrees
		
	if linear_velocity.y > 0:
		if rotation_degrees <= 90:
			angular_velocity = 2
		else:
			angular_velocity = 0
else:
	if rotation_degrees >= max_rotation_degrees:
		angular_velocity = 0
		rotation_degrees = max_rotation_degrees

	if linear_velocity.y > 0:
		if rotation_degrees >= -90:
			angular_velocity = -2
		else:
			angular_velocity = 0

RudyBlowfish

Try Scaling X or Y by -1

pkowal1982

Using RigidBody2D for player can be tricky. There's a note in the docs, that you should not change some internal variables. Using KinematicBody2D for your game is in my opinion easier. Just modified your example for comparison.

python3xdev

Thank you everyone for you efforts in trying to resolve this issue. Thank you @pkowal1982 for your solution. I did not use this solution in this game (because its already released, it did not bother me that much after a while), but I will definitely make use of this information in my next game. If you're curious about what I made, you can find it at [4mole.itch.io/bird-bounce](http:// "4mole.itch.io/bird-bounce") or at 4mole.com/home