So I dont like to do this but here is a chunk of code...

So hey... Uh... I did not want to do this but I'm absolutely stuck... My character when touching a wall slowly goes into the ground... And I dont know why. I tried a lot of things but I just cant. https://microstudio.io/i/MurdexStudio/with_this/ The problem is in the object player file within the update. Probably with the end but I'm not sure :( Sorry and thank you.

for each axis check collision separately .

Code generated by AI .

update = function(map)
  local _initialX = clone(this.x)
  local _initialY = clone(this.y)
  
  local _direction = keyboard.D - keyboard.A
  
  if _direction != 0 then
    local _xVelocityAccelerated = this.xVelocity + _direction * this.acceleration
    this.xVelocity = max(min(_xVelocityAccelerated, this.speed), -this.speed)
  else
    if this.xVelocity > 0 then
      this.xVelocity = max(0, this.xVelocity - this.friction)
    elsif this.xVelocity < 0 then
      this.xVelocity = min(0, this.xVelocity + this.friction)
    end
  end
  
  if this.grounded == false then
    this.yVelocity -= this.gravity
    if this.yVelocity < -this.maxFallSpeed then
      this.yVelocity = -this.maxFallSpeed
    end
  end
  
  if keyboard.press.SPACE and this.grounded then
    this.yVelocity = this.jumpHeight
    this.grounded = false
  end
  
  resolveCollision = function(axis)
    local velocity = 0
    if (axis == "x")  then 
      velocity = this.xVelocity 
    else 
      velocity = this.yVelocity 
    end
    local originalVelocity = velocity
    
    while abs(velocity) > 0.001
      local tempPos = 0
      if (axis == "x") then 
        tempPos = _initialX + velocity 
      else 
        tempPos = _initialY + velocity
      end
      
      local collision = false
      
      for hb in map.cHitBoxes
        local tempHitBox = clone(this.hitBox)
        if axis == "x" then
          tempHitBox.x = tempPos
        else
          tempHitBox.y = tempPos
        end
        
        if cCollision(tempHitBox, hb) then
          collision = true
          break
        end
      end
      
      if collision then
        velocity *= 0.5
      else
        if axis == "x" then
          this.x = tempPos
        else
          this.y = tempPos
        end
        break
      end
    end
  end

  local xCollided = resolveCollision("x")
  local yCollided = resolveCollision("y")
  
  if yCollided and this.yVelocity < -0.01 then
    this.grounded = true
    this.yVelocity = 0
  else
    this.grounded = false
  end  
  
  if sign(_direction) != 0 then
    this.direction = _direction
  end
  
  this.hitBox.x = this.x
  this.hitBox.y = this.y
  
  if this.grounded then
    if abs(this.xVelocity) > 0.1 then
      this.state = "run"
    else
      this.state = "idle"
    end
  else
    this.state = "jump"
  end
end

I'm sorry but it doesnt work.

https://microstudio.io/i/Loginus/with_this/

Collision works perfectly!

If you modified the code a bit, you would have an easier task.

Typically, three variables are used: position, velocity and acceleration (for each axis).

In the update function, you check if the key is pressed. If so, you set the acceleration.

Then you update the velocity (calculate the velocity from the current velocity and the current acceleration and mass). You calculate the next position of the object in the temporary variable and check if it will collide.

See how it is done in QuickEngine.

I put the charcter in the new pos but save the prev pos in another variable.