Information Technology IT – 20 Animation | e-Consult

To implement this animation, the following steps would be taken:

1. Variable Declaration and Initialisation: A variable named xPosition would be declared and initialised with a starting value. This value would represent the initial horizontal position of the square. For example, in Python: xPosition = 0. In JavaScript: let xPosition = 0;. In Scratch, this would be done in the variable pane.
2. Updating xPosition during each frame: During each animation frame (e.g., within a game loop or a repeating function), the xPosition variable would be updated. This update would involve increasing the value of xPosition by a specific amount. The amount would determine the speed of the animation. For example, in Python: xPosition += animationSpeed. In JavaScript: xPosition += animationSpeed;. In Scratch, the xPosition variable would be changed by a set amount in the event block.
3. Handling Edge Detection and Reset: To handle the case where the square reaches the right edge of the screen, a condition would be checked. This condition would check if xPosition is greater than or equal to the screen width. If this condition is true, xPosition would be reset to the initial value (e.g., 0). For example, in Python: if xPosition >= screenWidth: xPosition = 0. In JavaScript: if (xPosition >= screenWidth) { xPosition = 0; }. In Scratch, a conditional block would be used to check if the xPosition is greater than or equal to the screen width, and if so, the xPosition would be set back to the initial value.

Example (Conceptual Python):

screenWidth = 800
xPosition = 0
animationSpeed = 2
while True:
xPosition += animationSpeed
if xPosition >= screenWidth:
xPosition = 0
# Draw the square at (xPosition, yPosition)