Pico-8 Collisions with background tiles using fget and mget 

for someone who is brand new to pico-8 you've done a great job explaining it and helping me get an understanding of the program. Great job.

Can’t tell you how helpful these are. Thank you so much for posting.

As I continue to learn PICO-8, I always come back to your videos as the best tutorials with the best explanations, and no time wasted. Thanks again!

This is so well explained. I understand everything the first time, I see it. Due to your systematic approach, I even see your small errors before you correct them yourself :) . Thank you so much for your videos!

Great video! Very easy to understand and implement into my game.

Thanks for this! :D

always makes me move without stopping and when i collide, i cant move at all to any direction that doesnt have a wall

there is an issue. when we collide diagonally, the player get stuck in the wall by one pixel

Could someone explain what the `i` variable is for in the `for` loop? My code works, but I didn't catch him explaining it in the video.

much appreciated!

The piece of code that says "DO" doesn't work. I do not understand why.

Does anyone know if pico8 had any updates that make this code a little broken? I have the exact same code and the sprites with the same flags, but my character randomly changes direction even if I don't press any button, it looks like it "collides" with blank spaces on the map and then goes on a different axis. Here's the code: grid_x=0 grid_y=0 flag_tile=0 x=63 y=63 dx=0 dy=0 function _update() grid_x=flr(x/8) grid_y=flr(y/8) flag_tile=fget(mget(grid_x,grid_y),0) if btn(0) then dx=-1 end if btn(1) then dx=1 end if btn(2) then dy=-1 end if btn(3) then dy=1 end if hit(x+dx,y,7,7) then dx=0 end if hit(y+dy,x,7,7) then dy=0 end x+=dx y+=dy end function _draw() cls() map(0,0,0,0,16,16) spr(2,x,y) print(grid_x..","..grid_y,5,5,7) print(flag_tile,5,11) end function hit(x,y,w,h) collide=false for i=x,x+w,w do if fget(mget(i/8,y/8))>0 or fget(mget(i/8,(y+h)/8))>0 then collide=true end end return collide end

I cant seem to find my error. I followed the instructions and checked against your code. My sprite is colliding perfectly. However, it just continues to move in any direction I give it without stopping (unless colliding). Any suggestions?

I stopped being able to move as you did x y and d y

My brain gave up immediately

the code breaks when the player si flipped

The fget doesnt work when i print it, it always says 0