Movement/Wall Detection for Variable sizes

[DustyPorViva]

A small script I threw together to show how you can create a movement system with various speeds(without skipping over walls), and more importantly: various sizes. This means you can shrink your player down to 1 tile and squeeze through cracks, or apply a better wall detection to larger players. What it is lacking is detail to anything else but those two things. It initially started as an experiment with onwall2 for a solid wall detection(instead of lots of onwall()'s), and I decided to add size support later. Lacks important things like sliding around corners, but that's not what this is focused on.

PHP Code:

function onCreated() {
  clientr.movementSpeed = .5;
  clientr.movementSize = 2;
}
//#CLIENTSIDE
function onCreated() {
  showstats(1024);
  disabledefmovement();
  clientr.movementSpeed = .5;
  clientr.movementSize = 2;
  player.x = int(player.x)+.5;
  player.y = int(player.y);

  setTimer(0.05);
}

function onTimeout() {
  temp.speed = clientr.movementSpeed;
  temp.size = clientr.movementSize;
  player.zoom = size/2;
  for (temp.k=0;k<4;k++) {
    if (keydown(k)) {
      player.dir = k;

      temp.cx = (player.x+.5)-((size - 2)/2);
      temp.cy = (player.y+1)-((size - 2)/2);

      temp.horizontalwall = onwall2(cx + vecx(k)*speed,cy,size-1/16,size-1/16);
      temp.verticalwall = onwall2(cx,cy + vecy(k)*speed,size-1/16,size-1/16);

      if (horizontalwall == 0) player.x += vecx(k)*speed;
      else {
        for (i=0;i<(speed > client.size ? speed : size);i+=1/16) {
          if (onwall2(cx+vecx(k)*i,cy,size-1/16,size-1/16)) {
            player.x += vecx(k)*i;
            player.x = int(playerx+((size%2 == 1)*.5))+((size%2 == 0)*.5);
            break;
          }
        }
      }
      if (verticalwall == 0) player.y += vecy(k)*speed;
      else {
        for (i=0;i<(speed > size ? speed : size);i+=1/16) {
          if (onwall2(cx,cy+vecy(k)*i,size-1/16,size-1/16)) {
            player.y += vecy(k)*i;
            player.y = int(playery+((size%2 == 0)*.5))+((size%2 == 1)*.5);
            break;
          }
        }
      }
    }
  }
  showpoly 200,{
    (player.x+.5)-((size - 2)/2),(player.y+1)-((size - 2)/2),
    (player.x+.5)-((size - 2)/2)+size,(player.y+1)-((size-2)/2),
    (player.x+.5)-((size - 2)/2)+size,(player.y+1)-((size-2)/2)+size,
    (player.x+.5)-((size - 2)/2),(player.y+1)-((size - 2)/2)+size,
    (player.x+.5)-((size - 2)/2),(player.y+1)-((size - 2)/2),
    (player.x+.5)-((size - 2)/2),(player.y+1)-((size - 2)/2)+(1/16),
    (player.x+.5)-((size - 2)/2)+size-(1/16),(player.y+1)-((size - 2)/2)+(1/16),
    (player.x+.5)-((size - 2)/2)+size-(1/16),(player.y+1)-((size - 2)/2)+size-(1/16),
    (player.x+.5)-((size - 2)/2)+(1/16),(player.y+1)-((size - 2)/2)+size-(1/16),
    (player.x+.5)-((size - 2)/2)+(1/16),(player.y+1)-((size - 2)/2)+(1/16)
  };
  setTimer(0.05);
}

function onPlayerChats() {
  if (player.chat.starts("size")) {
    temp.newsize = player.chat.substring(5);
    if (newsize >= 1 && newsize <= 20) clientr.movementSize = newsize;
    else if (newsize > 20) player.chat = "Seriously, are you nuts?";
    else player.chat = "Not a compatible size!";
  } else if (player.chat.starts("speed")) {
    temp.newspeed = player.chat.substring(6);
    if (newspeed > 0) clientr.movementSpeed = newspeed;
  }
} 


Video as soon as I can get it uploaded without my internet timing out.