btaeagle.blogg.se - How to make something bounce when touching a color in scratch

A variable is a way of storing data used in a the project. Let's go through it and explain how it works.įirst, we're using two variables - here named "OldX" and "OldY".

This is the entirety of the script that takes care of it:

Find the ||sprites:mySprite image|| block in the Sprites menu – this is the image that is flippedĬontroller.A.onEvent(ControllerButtonEvent.The way that I do this is through the use of what I call the "old X and old Y" method.Įssentially, you constantly record the current location of the sprite, and then go back to that when touching the lines.

Note use of the function called “flipHorizontal”.

Create a new project and name it “flipImage”.

This can be useful in creating a simple 2 frame walking animation. Example #4: Image Flip with button press eventįlipping an image creates a mirror image when we use ||images:flip horizontal|| block. Concept: Flip Imageīy making a mirror flip of a sprite we can simulate walking by making each leg appear differently. The ||sprites:stay in screen|| block is in the Sprites menu.

Challenge: add button events that stop the sprite’s motion, and reset the sprite to the center of the screen.

Make the sprite stay in the screen boundary.

Change the key pad motion to use the discovered block by placing it in ||game:on start||.

Explore the Controller menu for ||controller:move mySprite with buttons|| and select the plus sign in the block to see ||controller:vx 100 and vy 100||.Start with motion (short method) example above or similar code.Create the sample code and run the codeĬ(ControllerButtonEvent.Pressed, function () ) Student Task #3: Create Velocity Motion.Create a new project and name it “motionLR”.Short methods and functions with motionĮxample #1: Increment position left and right.Setting ||sprites:vx|| and ||sprites:vy|| velocity.Incrementing ||sprites:x|| and ||sprites:y|| coordinates.

In these activities, the student will use: When the velocities of a sprite are not zero, then the sprite will be in motion. Velocity is the rate of change of our position - in real life, this is often measured as kilometers per hour or miles per hour. We will also see how to give a sprite a speed of motion, or velocity. We can use those events to change sprite location, and to make the sprite move. The game pad has ||controller:controller events|| for the ||controller:up||, ||controller:down||, ||controller:left|| and ||controller:right|| buttons. To get sprites moving, we will change their position using a game pad event.