Skip to content

Please update your browser

Your browser version is not supported by this site. CS First may not work properly. Learn more

arrow_back Réaction au rebond

Transcript

This add-on video will show you how to make the ball sprite react to being hit by the athlete. You can make it do something fun, like change colors, or something funny, like say “ouch!” You’ll use another conditional to complete this. Select the ball sprite, and drag out an “if” block. The ball sprite will check if it’s being hit – which means it’s touching the athlete. Find the “touching” block in “sensing,” and drag it into the condition space. Select “Player1” from the dropdown menu. Next, put the ball sprite’s reaction inside the conditional. You can create any type of reaction. The sprite might change colors or say something, or the background could change. Browse around in the “Motion” and “Looks” menus to find something cool for your sprite to do.

The example will show the sprite making a sound when it’s hit. To add a sound to your project, click the “Sounds” tab, then under “New Sound,” click “Choose sound from library.” The example will use “Ya.” Click it, click “OK,” then go back to “Scripts.” To add the sound to the conditional, go to “Sound,” and place the “play sound until done” block inside the “if” block. Add more blocks in here if you’d like your project to play different sounds!

If you click this new stack and the ball sprite isn’t touching the athlete sprite, it won’t do anything.

Drag the ball on top of the athlete sprite, and click again.

Sweet! It makes a noise.

Okay, two more things. First, this new stack needs to run at the same time as the other stack. Drag out another “when flag clicked” event, and snap it on top of your new code stack.

Try running this code now. It doesn’t work. That’s because when the flag is clicked, the code immediately checks to see if the sprites are touching, and if they aren’t, it stops and doesn’t check again. To fix this, use a loop. Add a “forever” loop just like you did in the first stack. That way, the new stack runs for as long as the old one does. All right, Here’s the game plan: Choose a fun action for your sprite to perform when it hits the athlete.

Make a new stack for the ball sprite with “when flag clicked,” “forever,” “if,” and “touching” blocks. Place the new actions inside the “if” block. Test your code, and look back at this video if you need help figuring it out. Still stuck? Go ahead and ask your neighbors, Hosts, or Gurus for help.

Choisir une extension
Réaction au rebond
Programme le lutin Balle pour qu'il dise quelque chose lorsqu'il rebondit.
Maillot d'équipe
Dessine ton athlète pour qu'il représente ton équipe favorite.
Second joueur
Ajoute une second athlète pour créer un jeu à deux joueurs.
Enregistrer le score
Ajoute un compteur de points au jeu.
Jouer contre l'ordinateur
Programme un lutin pour qu'il joue contre l'utilisateur.
Rebond aléatoire
Fais rebondir la balle dans une direction aléatoire.
arrow_backward Retour
Suivant arrow_forward
Instructions
  1. Choisis une extension, et clique sur " Regarder " pour découvrir comment la créer.
  2. Une fois que tu as terminé une extension, essayes-en une autre !