Lesson Q&A

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• Sprite turns right when I don't press any arrow on keyboardAlcedoHi, after the completion of the script when I left the arrow keys on the keyboard, the sprite turns on the right side but keeping the y position. I think this is due to the last line of code `_skin.flip_h = sign(direction.x) < 0.0`. To prevent this behavior I added an If to check if there is no direction input. So my last lines of code are `if direction.x != 0.0:` ` _skin.flip_h = sign(direction.x) < 0.0` Do you guys think there is a better way to prevent this behavior? 1 8 Aug. 21, 2024
• About the Dictionary techniqueWatchinofoyeAt the beginning of the lesson, you say "I will run you through different techniques to do that, starting with simple if and elif statements and ***moving on to a more advanced technique using a dictionary***." Guess it have been missed because it does not appear in the lesson. I presume it would be something where we have a dictionary using Vector directions as keys and textures as values? Something like this : ```gdscript var directions = { Vector2.LEFT: RUNNER_RIGHT, Vector2.RIGHT: RUNNER_RIGHT, Vector2.UP: RUNNER_UP, Vector2.DOWN: RUNNER_DOWN, UP_LEFT: RUNNER_UP_RIGHT, UP_RIGHT: RUNNER_UP_RIGHT, DOWN_LEFT: RUNNER_DOWN_RIGHT, DOWN_RIGHT: RUNNER_DOWN_RIGHT, } ``` ```gdscript func _physics_process(delta: float) -> void: # [...] - match direction_discrete: - Vector2.RIGHT, Vector2.LEFT: - _skin.texture = RUNNER_RIGHT - Vector2.UP: - _skin.texture = RUNNER_UP - Vector2.DOWN: - _skin.texture = RUNNER_DOWN - UP_RIGHT, UP_LEFT: - _skin.texture = RUNNER_UP_RIGHT - DOWN_RIGHT, DOWN_LEFT: - _skin.texture = RUNNER_DOWN_RIGHT + if directions.has(direction_discrete): + _skin.texture = directions[direction_discrete] if direction_discrete.length() > 0: _skin.flip_h = sign(direction.x) < 0.0 ``` 1 2 Sep. 15, 2024
• Is flipping strictly required for any reason?BONDEGGI was just wondering if the flipping is required, something in my primitive brain just doesn't let me see the flipping technique as more readable as you mentioned in the module ```gdscript Vector2.RIGHT: _skin.texture = RUNNER_RIGHT Vector2.LEFT: _skin.texture = RUNNER_LEFT ``` seems an awful lot easier to read to me rather than ```gdscript Vector2.RIGHT, Vector2.LEFT: _skin.texture = RUNNER_RIGHT if direction_discrete.length() > 0: _skin.flip_h = direction.x < 0.0 ``` Anything bad going to happen in the future if I stick to individuals? 1 0 Mar. 29, 2025
• Is there any special reason we preload the sprites as const?SesselsI did a few small tutorials before this course and ive become pretty accustomed to using the animatedsprite2d. To me it seems a lot simpler(maybe just because im used to it) to just use the single sprites as one frame "animations" and reference those in code or is the an advantage to using the preloading method? 3 0 Mar. 23, 2025
• Regarding the convention and spritesyellow-anteaterStating that it was a convention answered a doubt I got when making the game for Game You can Make from previous module. I made a sprite top down view and I wanted it to rotate to view at the position where a projectile would launch to. The sprite in question was a warning sign that spawns at the location where a meteorite would appear, its top side has an arrow that points to the location. I was preloading the texture directly from code and for some reason the texture never pointed to the position where the projectile had to go. I reviewed all other assets we have work with like the ship from the Loot it all module and saw that the sprite is looking to the right. When I created my ship asset I draw it and saved it looking up and then rotated it on the Editor same as the other ship example. I didnt made the connection, was just following the example. For my texture rotation then I had to set the rotation to 90 degree to make it look right and the sum the angle from diection_to() to set it up correctly. I think maybe there was a better way to do it besides creating the sprite looking to the right. 1 0 Mar. 17, 2025
• Buffer timerequired-cheetahHi. May I have a hint or two on how to add buffer time between inputs? 6 0 Mar. 05, 2025
• $ vs %blushing-squidMine shows/works with $Skin instead of %Skin. Why's that? 1 0 Feb. 07, 2025
• Symmetrical SpritesTechosHello! I think that the final method shown using flip_h and match cases is very cool, I've been using my own method with flip_h and booleans but this is a lot simpler. It made me wonder though does something like this only work because the sprite is symmetrical going left to right.? If the sprite had a difference on the left side for example, would you have to write out the match case similar to the previous examples or is there a simpler method? 2 0 Jan. 14, 2025
• Can't we just use '%Skin' directly in code?DMKAt first I thought the Unique Name feature was intended to allow using %NodeName in code directly instead of creating a path reference variable, since it makes the node path short. But still you seem to create a reference variable each time. I think I heard somewhere that calling %NodeName multiple times doesn't make the engine re-process it every time, since it stores a cache of it once you call it? 1 0 Jan. 06, 2025
• Sprite stattering after some framesPurpleSunriseHello! I am experiencing some stattering in the sprite after I leave it going in the same direction for a while, like after 1 secondo or so. It statters a couple of times and the stops. What could the reason be? Thank you! 8 0 Dec. 04, 2024
• Question about multiple cursor mode◆ LP[https://i.imgur.com/Jb1knjh.png](https://i.imgur.com/Jb1knjh.png) I want to copy the direction(LEFT, RIGHT, UP_LEFT, etc) all at once & paste it after RUNNER_. So I need to enable multiple cursor on lines that are not adjacent to each other. Would that possible? Oh, and is there a shortcut to fold indented lines? I think that would solve my issue if we can only use multiple cursor with adjacent lines. 2 0 Dec. 03, 2024
• Pseudo Private VariablesHodeoboBagginsI am at the pseudo private variable part of the lesson. I have this code. The displayed sprite never changes regardless of direction. Also if I just copy and paste code from the end of the lesson the displayed sprite never changes either. What am I missing? ```gdscript extends CharacterBody2D const RUNNER_DOWN = preload("res://assets/runner_down.png") const RUNNER_DOWN_LEFT = preload("res://assets/runner_down_left.png") const RUNNER_DOWN_RIGHT = preload("res://assets/runner_down_right.png") const RUNNER_LEFT = preload("res://assets/runner_left.png") const RUNNER_RIGHT = preload("res://assets/runner_right.png") const RUNNER_UP = preload("res://assets/runner_up.png") const RUNNER_UP_LEFT = preload("res://assets/runner_up_left.png") const RUNNER_UP_RIGHT = preload("res://assets/runner_up_right.png") @onready var _skin: Sprite2D = %Skin var max_speed := 600.0' var direction := Vector2(0, 0) func _physics_process(_delta: float) -> void: var direction := Input.get_vector("move_left", "move_right", "move_up", "move_down") velocity = direction * max_speed if velocity.length() > 0.0: rotation = velocity.angle() if direction.x > 0.0 and direction.y > 0.0: _skin.texture = RUNNER_DOWN_RIGHT elif direction.x < 0.0 and direction.y > 0.0: _skin.texture = RUNNER_DOWN_LEFT move_and_slide() ``` 3 0 Nov. 25, 2024
• Question: Why does const DOWN_RIGHT work in Match?MrBright01When using match for character facing, why does DOWN_LEFT and the other constants work? Is matching for DOWN_LEFT a boolean check to see if DOWN_LEFT is true? 3 0 Nov. 16, 2024
• "Try this on your own" if/elif chain question:MrBright01When I did this, I added the direction that was eliminated in the offered solution for the up/down/left/right straight movement and checked if it was zero. When I tested it, that eliminated the need to have the diagonals above the straights. Is there any reason I should not do this? ```gdscript if direction.x > 0.0 and direction.y > 0.0: _skin.texture = RUNNER_DOWN_RIGHT elif direction.x < 0.0 and direction.y > 0.0: _skin.texture = RUNNER_DOWN_LEFT elif direction.x > 0.0 and direction.y < 0.0: _skin.texture = RUNNER_UP_RIGHT elif direction.x < 0.0 and direction.y < 0.0: _skin.texture = RUNNER_UP_LEFT elif direction.x > 0.0 and direction.y == 0.0: _skin.texture = RUNNER_RIGHT elif direction.x < 0.0 and direction.y == 0.0: _skin.texture = RUNNER_LEFT elif direction.x == 0.0 and direction.y > 0.0: _skin.texture = RUNNER_DOWN elif direction.x == 0.0 and direction.y < 0.0: _skin.texture = RUNNER_UP ``` 2 0 Nov. 16, 2024
• Question, related to direction_discrete.lenght()oliver_gzzHey there, got a little lost, of what **direction_discrete.lenght()**, when it comes to simplify the code and flip textures horizontally. Why shouldn't just be `if direction_discrete > 0:` And why, is `if direction_discrete GREATER THAN 0` shouldn't it be, less than 0 because we're moving the character to the left? thanks in advance! 4 0 Oct. 28, 2024
• Question relating `sign()` functionAbdul Hannan AhmedHi! I just wanted to ask that in the following code: ```gdscript if direction_discrete.length() > 0: _skin.flip_h = sign(direction.x) < 0.0 ``` Why did we do `sign(direction.x)`. We already have a `direction_discrete: Vector2` which returns the `direction.sign()`. We could do: ```gdscript if direction_discrete.length() > 0: _skin.flip_h = direction_discrete.x < 0.0 ``` Was there any specific reason to use `sign(direction.x)`? 1 0 Sep. 15, 2024