Does anyone know how to read the color of a specific pixel on the sprite screen?

Do you mean the sprite page? you can use GPAGE 0,4 and use GSPOIT(X,Y) to get the color value of the sprite. You can also use GPAGE 4,4 to display and edit the sprite sheet.

Could you explain the purpose of your program? (especially line 18)

The purpose is to be a basic raycaster, by using a sprite as the map to be rendered on GPAGE 0,0. Line 18 is used to control the slope of the ray. Look up sprite-based raycasting on Scratch for more.

Heres what i have now

It still doesnt work

Thank you. Please give me a bit, as my parents have to approve downloads. I'll let you know.

Please don't worry. I'll keep it until you give me a reply.

Unfortunately the admins seemed to have deleted your program code. Thank you though.

If you would be willing to post screenshots of your code that would be amazing. If not i understand.

I have no idea the reason why admin remove my post. Actually, I've written the key on the newest post of my play journal. Could you find it? Unfortunately I cannot attach screenshot here because of region lock.

Is it the HNZBI? I found that in the comments of your drawing. Somethibg about airplane combat

No, that's not the one. On the newest article of my play journal (in the attached screenshot, an armed girl is running against a big caterpillar), an US smilebasic user asked me to give him a key, and I gave him the key.

GSPOIT’s parameters should probably be float as it can only read pixel within a whole number. I’m not really sure what you are trying to do, are you trying to create a sprite or a drawing of a sprite on the graphics screen?

I guess he is attempting to measure the length of casted ray (distance to an object) to render 3D map.

Thank you, i have found it. You are correct about my current method.