Dodge the Creeps - no player collision

UnknownUser

I have followed the tutorial & compared against the completed project on github - At this point, i should be spawing mobs & controlling the player. The UI code is not present. However, the player does not seem to disappear or react when colliding with enemies.

I've attached my player& mob files.

In addition, I have recieved the following error whenever I attempt to run the game. This function is found in the player file.

W 0:00:00.709 The argument 'body' is never used in the function 'on_Player_body_entered'. If this is intended, prefix it with an underscore: 'body' <C++ Error> UNUSED_ARGUMENT <Source> Player.gd:61

TwistedTwigleg

Welcome to the forums @vite!

Does your player and mob scenes have collision shapes setup? Each should have CollisionShape2D, and without them they will not be able to detect each other.

Also, have you connected the body_entered signal in the Player scene to the _on_Player_body_entered function? You can connect the signal through the editor or though code (like connect("body_entered", self, "_on_Player_body_entered") in the _ready function).

cybereality

I can't see how you wired up the signals. Most likely you forgot to connect the "hit" signal with the "game_over" function. Maybe if you zipped up the whole project folder I can take a closer look.

UnknownUser

@TwistedTwigleg Both the player and mob scenes have CollisionShape2Ds covering the sprites.

@cybereality PFA the project file & screenshots of the connections.

TwistedTwigleg

While I'm not 100% sure why this fixes it, but if you swap the layer and mask around in the Mob.tscn file, so there is nothing in the layer and a single mask in the top left corner, it works as expected in Godot 3.2.3 RC5.

The layer and mask system in Godot is confusing and every time I think I kinda have a handle on it, things seem to change and do not line up with what I thought was how it worked. :sweat_smile: Swapping the layer and mask should fix the issue though, even if I do not totally understand why!

UnknownUser

@TwistedTwigleg Know of anyone who can update the tutorial? I made the switch as suggested, and it worked flawlessly - attached is how the tutorial appears. I can't be the only one who was tripped up by this!

TwistedTwigleg

Anyone can make an issue on the Godot documentation and/or make a pull request supplying the change to the RST file. I'm glad the fix works, and I agree that the issue is likely to occur to others whom follow the tutorial given the image. The only thing I'm not sure about is whether the issue occurs in all cases, if the tutorial not working is a bug and the image shows what is supposed to be working, or if it is something else entirely. I suppose it couldn't hurt to make a GitHub issue though?

cybereality

The example Creeps project that comes with the engine has the collision layer as shown in the tutorial and that works.

TwistedTwigleg

@cybereality said: The example Creeps project that comes with the engine has the collision layer as shown in the tutorial and that works.

This is what I was worried about in my last post on this thread. I was wondering if the issue occurs everywhere or if it was a project-specific issue that, for some reason, occurs in vite's project but not in the project from the documentation. No reason to open a bug on GitHub then, since it's not a issue with the tutorial but rather is something project-specific.