Raycast in the loop issue.

YAMATO_jp

Hi.
I'm currently creating a system that randomly places items on a grid map.
I've created multiple box collider2Ds to separate areas where items will not drop from areas where they will drop.(image1)
(I used the 2D Roguelike tutorial as a reference for creating the schematics and game objects.)
(https://makinom.com/guide/tutorials/2d-roguelike/02-generating-the-level/)
I then tried using raycast to identify these areas, specifying coordinates in a loop.(image2-4)

The first raycast works fine, but the second raycast gives countless errors.(image5)
I've tried various things, but I can't solve the problem.

Am I specifying the coordinates incorrectly?
Or, if there's a better way to divide the item drop areas, I'd appreciate it if you could tell me.

(image1)

(image2-4)

(image5)

gamingislove

Hm, not really sure, should generally work to raycast multiple times after each other. Might be an issue with start and target position being the same.

You could try using the Shapecast node instead which also has dedicated 2D raycasts (e.g. Circle 2D).

YAMATO_jp

When I set the starting position to (0,0,0), the error disappeared, but I still didn't get the results I wanted, so I followed your suggestion and used Shapecast node, and it worked perfectly! Thank you so much!

YAMATO_jp

Umm...I'm getting a lot of errors no matter what.(image6)
It seems that an overflow is occurring partway through placing the objects.
Sometimes the overflow doesn't occur, and sometimes it occurs when placing the first or fifth object.

As in the previous image, after dividing the area to be placed, I create two lists containing coordinates for random placement (image 7), and then place them using the tagged machine.

I can't figure out what the cause is...
Is there any way to solve this problem?

image6

image7

YAMATO_jp

When I tried it, it seemed like errors occurred when connecting to the third Shapecast.
I'm not sure if this is the root cause, but I hope this helps.

gamingislove

Based on the error it seems to be an issue with loading the data of a component (a trigger machine). Try finding out which one it is in your scene (or a prefab you spawn?) and redo it. Might be some data being broken.

YAMATO_jp

Thank you!!
And sorry, it seems I didn't specify the position properly...

This map's center is (0,0,0) and its dimensions are (30,25).
(The map image size is 3000 pixels x 2500 pixels)
So, I started the loop from (-14.5, -11.5) and looped it (30,25) times, but the error disappeared by reducing the loop by one.

The location where items can be placed has become one square smaller on each side, but it is still working properly.

However, I don't understand why the error occurred, or why it stopped occurring...

gamingislove

Hm, hard to say - I'll probably need a Unity test project to check this out.
By chance - is this only happening if you e.g. have a game object with a machine component selected (i.e. displaying it's inspector)? The error is related to data handling (save/load) of the component, which shouldn't really be related to the raycasts unless they spawn something with such a component.

YAMATO_jp

Sorry, my Unity knowledge is limited, so I don't really understand your question.
However, even when I delete all game objects except the map, an error occurs.
(The first map doesn't throw an error, but the second map does.)

I've sent you the project, so I'd appreciate it if you could take a look.

YAMATO_jp

Sorry, my Unity version is 6000.2.6f2.

gamingislove

Tested the project and this is simply because too much is happening in one frame. Due to looping Y and X positions, once you reach a certain size of rows and columns it can result in too many nodes/functions being used.

To fix this, you can use the Limit Nodes Per Tick settings in the Settings node of the schematic. E.g. limiting to 1000 nodes per tick/frame.

YAMATO_jp

Oh, I don't know there is such a setting.
The error is gone.
Your checking is a great help! Thank you so much!!
Thank you!!