Workshop › Zelda-style Dungeon › Step 13 of 22

Ouch

What we are doing

You have 3 hearts. An enemy touching you costs one. Then you are safe for 60 frames, and you and the enemy bounce apart, so it can't keep hitting you.

```js
let hearts
let hurt // frames the player cannot be hurt again

  hearts = 3
  hurt = 0

  if (hurt > 0) hurt -= 1

    if (e.hp > 0 && hurt === 0 && overlap(box(e), box(player))) {
      hearts -= 1
      hurt = 60
      // Both bounce apart, so an enemy cannot stay stuck on top of you.
      const ax = Math.sign(player.x - e.x) || 1
      const ay = Math.sign(player.y - e.y)
      const horizontal = Math.abs(player.x - e.x) >= Math.abs(player.y - e.y)
      for (let i = 0; i < 6; i++) move(player, horizontal ? ax * 4 : 0, horizontal ? 0 : ay * 4)
      e.knock = 10
      e.kx = horizontal ? -ax * 3 : 0
      e.ky = horizontal ? 0 : -ay * 3
    }
```

What it means

hurt counts down; while it is above 0, touches do nothing.
ax and ay say which side of the enemy you are on (|| 1 when exactly on top).
You are pushed 24 pixels away in 6 small moves, so walls still stop you; the enemy is knocked the other way.

Your turn

Above held, write hearts and hurt; in reset, set them above swing.
At the top of update, count hurt down.
In the enemy loop, after the sword block, handle a touch.

Skills: Collision detection, Game states

← They wander Blinking and hearts →

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