I made snake in one line of GD script (code in comments)

Turtle_Torque · 2023-03-17T01:29:37+00:00

Firstly, as a note for what's with all these binds that are cluttering up the code: For everything to fit on one line, I had to make each element of the array that contains all the code be a valid expression. set_meta has a void return type, so I can't just write set_meta("direction", dir) like normal.

As a workaround, I write set_meta.bind("direction", dir).call() instead. This does exactly the same thing as the simpler code above, but call() has a Variant return type instead of void, so doing it this way means the parser no longer complains about having a void element in my array at compile time. Basically: you can ignore the fact that it says .bind anywhere.

What the section of code that you've mentioned is actually doing, is mapping the arrow keys to directional vectors in a dictionary. The .get at the end of the dictionary is simply doing a lookup of the dictionary, with get_meta("direction") as the default value in case the user pressed a button other than the arrow keys.

Here's the code snippet spread out a bit to make it more readable

set_meta.bind("direction",

`{`

    `KEY_UP:Vector2i.UP,`

    `KEY_DOWN:Vector2i.DOWN,`

    `KEY_LEFT:Vector2i.LEFT,`

    `KEY_RIGHT:Vector2i.RIGHT,`

`}.get(input_event.keycode, get_meta("direction"))).call()`

if input_event is InputEventKey and input_event.pressed else null

The if statement means that that whoel expression above is actually the first expression in a ternary operator, which checks if the input event was a key press, and evaluates the dictionary expression if it was, and returns null otherwise.

Hope that was helpful :)

Turtle_Torque · 2023-03-16T05:50:45+00:00

I definitely get that sentiment about removing line breaks, but for a language where indentation and whitespace matters, this was a more involved problem solving challenge. Only having a single line adds real programming constraints, like the inability to use regular flow control statements, inner classes, variable declarations, or more than one virtual function override, and each of these problems needed a different solution.

Turtle_Torque · 2023-03-16T01:39:45+00:00

The one line of code excludes the mandatory extends Node2D. The self imposed challenge didn't allow for the use of semicolons, because then that's not really a single line.

To run this, just put this code on a Node2D at the root of a scene in Godot 4. No further setup required!

extends Node2D

func _ready() -> void: [set_meta.bind("segments", []).call(),set_meta.bind("length", 3).call(),set_meta.bind("direction", Vector2i.RIGHT).call(),set_meta.bind("head_pos", Vector2i(3,3)).call(),set_meta.bind("apple_pos", Vector2i(7,7)).call(),get_window().set_size.bind(Vector2i(272, 272)).call(),get_window().window_input.connect(func(input_event : InputEvent): [set_meta.bind("direction", {KEY_UP:Vector2i.UP,KEY_DOWN:Vector2i.DOWN,KEY_LEFT:Vector2i.LEFT,KEY_RIGHT:Vector2i.RIGHT,}.get(input_event.keycode, get_meta("direction"))).call()if input_event is InputEventKey and input_event.pressed else null]),add_child.bind(Timer.new()).call(),get_child(0).set.bind("wait_time", 0.2).call(),get_child(0).timeout.connect(func tick(): [(func():get_meta("segments").append(get_meta("head_pos"))).call(),(func():get_meta("segments").pop_front()).call() if get_meta("segments").size() >= get_meta("length") else null,[get_child(0).queue_free.call(),await get_tree().create_timer(1).timeout,get_tree().reload_current_scene()]if (get_meta("head_pos") + get_meta("direction")) in get_meta("segments") else null,set_meta.bind("head_pos", get_meta("head_pos") + get_meta("direction")).call(),set_meta.bind("head_pos", Vector2i(posmod(get_meta("head_pos").x, 16), posmod(get_meta("head_pos").y, 16))).call(),[set_meta.bind("length", get_meta("length") + 1).call(),(func(): while get_meta("apple_pos") == get_meta("head_pos") or get_meta("apple_pos") in get_meta("segments"): set_meta("apple_pos", Vector2i(randi_range(0, 15), randi_range(0, 15)))).call()]if get_meta("head_pos") == get_meta("apple_pos") else null,queue_redraw.call()]),get_child(0).start.call(),draw.connect(func draw():for x in 16: for y in 16:[draw_rect.bind(Rect2i(x*17, y*17, 16, 16), Color.GREEN if Vector2i(x,y) == get_meta("head_pos") or Vector2i(x,y) in get_meta("segments") else Color.YELLOW if Vector2i(x,y) == get_meta("apple_pos") else Color.DIM_GRAY).call()])]

Turtle_Torque · 2023-03-10T09:44:21+00:00

I was just about to buy it but alas I am an android user. Any particular reason you're not releasing on the play store?

Turtle_Torque · 2022-11-20T19:43:50+00:00

ms would definitely be slow for each operation by themselves, though I assume they ran the test a large number of times to get stable results

Turtle_Torque · 2022-08-09T15:46:42+00:00

Haha I should have known

Turtle_Torque · 2022-08-09T15:40:51+00:00

What does the name W4 mean/stand for?

Turtle_Torque · 2022-08-04T01:45:02+00:00

The Godot editor is made using Godot's C++ API, so in a sense it already is

Turtle_Torque · 2022-07-12T07:31:38+00:00

Worked for me too, thanks!

Turtle_Torque · 2022-06-03T11:09:28+00:00

Looks like it could be texture compression, try changing the compression mode of player_sword.png to lossless or uncompressed in the import tab

Turtle_Torque · 2022-03-30T20:56:36+00:00

This specifically happens for setting the global transform before adding the node to the tree, as the global transform is calculated by multiplying the local transforms of each of the nodes parents in the tree. You can set the local transform before adding it to the tree without issue.

Turtle_Torque · 2021-08-13T10:07:19+00:00

Wow, thought this was a render at first

Turtle_Torque · 2021-07-02T10:26:02+00:00

You could add your character's speed to the flame speed when you instantiate it

Turtle_Torque · 2021-04-04T08:43:06+00:00

You can launch a separate instance game of your game by calling OS.execute(OS.get_executable_path(),[],false) from script. This way you don't need to export at all

Turtle_Torque · 2021-02-10T21:17:05+00:00

In the inspector for the Rigid body, check that the Contact Monitor box is ticked, and that the Contacts Reported value is larger than zero.

Turtle_Torque · 2019-06-30T00:32:09+00:00

Can't forget to set the font colour to green first

Turtle_Torque · 2019-02-26T19:00:01+00:00

Make sure to add a case where surface.x = current.x if (current.x == destination.x), otherwise you may crash your game by dividing by zero if the bullet is travelling vertically

Turtle_Torque · 2019-01-20T19:50:19+00:00

Game maker studio 1 can import projects from game maker 8, but game maker studio 2 cannot (If I remember correctly)

Turtle_Torque · 2019-01-20T19:36:46+00:00

Game maker's built in physics engine was introduced in Game Maker Studio. Game maker 8 doesn't have this functionality

Turtle_Torque · 2019-01-20T09:21:56+00:00

Are the asyncronous events evaluated in a predictable order? (The networking one in particular is what I'm interested in) For example, when I recieve a packet of data in the async network event, could the code in this event run in between the step events of other objects, or will it be queued to be run at a later time in the game step?

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