Hello, I am trying to create a pacman-like game. I have an array that looks like this:

array:

1111111111111
1000000000001
1111110111111
1000000000001
1111111111111

1 = Wall, 0 = Empty space

I use this array to draw tiles that are 16x16 in size. The Game character is 32x32.

Initially I represented the character's position in array indexes, [1,1] etc.

I would update his position if array[character.new_y][charater.new_x] == 0

Then I translated these array coordinates to pixels, [y*16, x*16] to draw him.

He was lining up nicely, wouldn't go into walls, but I noticed that since I was updating him by 16 pixels each, he was moving very fast.

I decided to do it in reverse, to store the game character's position in pixels instead, so that he could use less than 16 pixels per move.

I thought that a simple if statement such as this:

if array[(character.new_pixel_y)/16][(character.new_pixel_x)/16] == 0

would prevent him from going into walls, but unfortunately he eats a bit of the bottom and right side walls.

Any ideas how would I properly translate pixel position to the array indexes? I guess this is something simple, but I really can't figure it out :(