p5.js | Mouse movedY
Last Updated :
31 May, 2020
The movedY variable in p5.js contains the vertical movement of the mouse since the last frame of the sketch. A positive value indicates that the mouse moved down and a negative value indicates that it moved up in the last frame.
Syntax:
movedY
The program below illustrates the movedY variable in p5.js:
Example 1:
javascript
function setup() {
createCanvas(400, 300);
textSize(16);
fpsSlider = createSlider(1, 60, 30, 1);
fpsSlider.position(20, 40);
}
function draw() {
clear();
text( "Move the slider to change the framerate of the sketch" , 20, 20);
frameRate(fpsSlider.value());
text( "Current Framerate: " + fpsSlider.value() + " FPS" , 20, 80);
text( "The mouse moved " + movedY + " units in the y-direction" , 20, 140);
text( "since the last frame" , 20, 160);
}
|
Output:
Example 2:
javascript
let gameOver = false ;
function setup() {
createCanvas(600, 300);
textSize(16);
}
function draw() {
clear();
text(
"Move the mouse vertically from one end to the " +
"other end slowly to keep playing" ,
20,
20
);
if (!gameOver) {
text( "The mouse moved " + movedY + " units in " +
"the y-direction" , 20, 60);
if (abs(movedY) > 3) gameOver = true ;
} else text( "You moved too fast! Refresh to try again" , 20, 80);
}
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Output:
Reference: https://p5js.org/reference/#/p5/movedY
Environment Setup: https://www.geeksforgeeks.org/p5-js-soundfile-object-installation-and-methods/
Reference: https://p5js.org/reference/#/p5/setCamera
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