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 1 Sep. 15, 2024
• 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