Moving player on Y axis in Godot 2D

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I'm new to Godot. I'm trying to make my player move vertically just like when it's moving horizontally. I've tried a couple of thoughts, but unfortunately, I couldn't move him the I want him to move. I want to code my vertical movement in a similar way to my following horizontal movement code if possible:

var direction: = Vector2(
    Input.get_action_strength("move_right") - Input.get_action_strength("move_left"), 0.0
)
velocity = speed * direction
velocity = move_and_slide(velocity)

And if it's not possible, how can I code it?

gdscript godot game-development
1 Answers

Once upon a time there were vectors. I'm not in the mood to make yet another Introduction to Vector Algebra or to explain How to Work With Arbitrarily Oriented Vectors. Perhaps you might be interested in Math for Game Devs.

In this case, what you need to know is that 2D Vectors have an horizontal an a vertical component (usually called x and y respectively). And you are leaving your vertical component at zero, here:

var direction: = Vector2(
    Input.get_action_strength("move_right") - Input.get_action_strength("move_left"), 0.0
)

So… Er… Don't do that. You say you want it to be like the horizontal, so something like this:

var direction: = Vector2(
    Input.get_action_strength("move_right") - Input.get_action_strength("move_left"),
    Input.get_action_strength("move_down") - Input.get_action_strength("move_up")
)

In computer graphics the vertical component in 2D often goes downwards, due to historical reasons. There are different conventions for 3D, but that is not the issue at hand, pun intended.

The other lines you have already work with arbitrary vectors. You don't need to change them, nor repeat them.

user_4020220
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