collision system Löve

function love.draw()
  --draws the black border around the screen.
  love.graphics.setColor(0, 0, 0)
  love.graphics.rectangle("fill", 0, 0, 704, 576)
  --draws the white rectangle in the middle and prints the text on the screen.
  love.graphics.setColor(255, 255, 255)
  love.graphics.rectangle("fill", 64, 64, 576, 448)
  love.graphics.print(printvar)
  --draws the player, a blue rectangle.
  love.graphics.setColor(0, 0, 244)
  love.graphics.rectangle("fill", player.x, player.y, 64, 64)
end

--checks which key is pressed when certain keys are pressed it performs certain actions,
--uses WSAD for movement.
function love.keypressed(key)
  if key == "w" and move.up then
    player.y = player.y - 64
  elseif key == "s" and move.down then
    player.y = player.y + 64
  end
  if key == "a" and move.left then
    player.x = player.x - 64
  elseif key == "d" and move.right then
    player.x = player.x + 64
  end
end

--resizes the window to x 704 and y 576.
function window()
  love.window.setMode(704, 576)
end

--draws our map, changing the numbers here will result in either a collision or not, it only checks for 0 so anything except for 0 is a collision.
function sketch_wall()
sketch = {}
sketch[1] = {1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}
sketch[2] = {1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1}
sketch[3] = {1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1}
sketch[4] = {1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1}
sketch[5] = {1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1}
sketch[6] = {1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1}
sketch[7] = {1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1}
sketch[8] = {1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1}
sketch[9] = {1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}
end

--collision function; player.y / 64 + 1 and player.x / 64 + 1 is the current location on the map, see table above. tldr; +2 is for going right or down 0 is for left and up.
--If you were to change the == 0 with == 1 and switch the true and false you can make more than 1 type of tile.
 function collision(sketch)
  if sketch[player.y / 64 + 1][player.x / 64 + 2] == 0 then
    move.right = true
    move.rightnum = 0
  else
    move.right = false
    move.rightnum = 1
  end
  if sketch[player.y / 64 + 1][player.x / 64] == 0 then
    move.left = true
    move.leftnum = 0
  else
    move.left = false
    move.leftnum = 1
  end
  if sketch[player.y / 64][player.x / 64 + 1] == 0 then
    move.up = true
    move.upnum = 0
  else
    move.up = false
    move.upnum = 1
  end
  if sketch[player.y / 64 + 2][player.x / 64 + 1] == 0 then
    move.down = true
    move.downnum = 0
  else
    move.down = false
    move.downnum = 1
  end
end

function love.load()
  --creates a table for the movement.
  move = {}
  move.up = true
  move.down = true
  move.left = true
  move.right = true
  move.upnum = 0
  move.downnum = 0
  move.leftnum = 0
  move.rightnum = 0
  --table for the player
  player = {}
  player.x = 64
  player.y = 64
  --calls the sketch_wall() function.
  sketch_wall()
  --calls the window() function.
  window()
end

function love.update()
  --prints the values of the numbers associated with left, right, up and down 0 means you can move to that spot but 1 means there would be a collision.
  printvar = {"                                                        ", "Up: " .. move.upnum, "      ", "Down: " .. move.downnum, "      ", "Left: " .. move.leftnum, "      ",  "Right: " .. move.rightnum}
  collision(sketch)
end