LÖVE

MrFariator wrote: ↑Mon Apr 15, 2019 1:02 pm You need to define a filter for your character and use it in conjuction with world:move().

Consider the example filter from the github page:

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local playerFilter = function(item, other)
  if     other.isCoin   then return 'cross'
  elseif other.isWall   then return 'slide'
  elseif other.isExit   then return 'touch'
  elseif other.isSpring then return 'bounce'
  end
  -- else return nil
end

-- an example on how to use said filter
function movePlayer(player, dt)
  local goalX, goalY = player.vx * dt, player.vy * dt
  local actualX, actualY, cols, len = world:move(player, goalX, goalY, playerFilter)
  player.x, player.y = actualX, actualY
  for i=1,len do
    local other = cols[i].other
    if other.isCoin then
      takeCoin(other)
    elseif other.isExit then
      changeLevel()
    elseif other.isSpring then
      highJump()
    end
  end
end

What this filter does is that the moved object will go right through coins (but still register the collision), slide along the surfaces of walls, stop moving as it touches an exit, and bounces off when hitting a spring. For any other objects, the collisions are ignored.

So in your case, when you want to move your character, it could be something like this:

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local characterFilter = function(item, other)
  if     other.isButton then return 'cross'
  elseif other.isWall then return 'slide'
  end
end

-- in character movement code
world:move ( character, destinationX, destinationY, characterFilter ) -- pass the filter to world:move 

The important part to remember is that the table you are using for the button needs to contain the field "isButton", and it needs to be a non-false and non-nil value. Like for example:

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local buttonObj = {isButton = true, x = 10, y = 10, w = 20, h = 5}
world:add ( buttonObj, buttonObj.x, buttonObj.y, buttonObj.w, buttonObj.h )

After that you'll just have to figure out how to handle the collision response when the player touches the button.

maxtrautwein wrote: ↑Mon Apr 15, 2019 10:18 am If you don't want your character to collide with the button maybe just don't add it with world:add ?