Merge pull request #1360 from Acha0203/fix/examples-en-09-simulate-00-forces

Fix an incorrect text and modify the format of source code on examples/en/09_Simulate/00_Forces

Author: limzykenneth

src/data/examples/en/09_Simulate/00_Forces.js

@@ -9,7 +9,7 @@
 // Bodies experience gravity continuously
 // Bodies experience fluid resistance when in "water"
 
-// Five moving bodies
+// Nine moving bodies
 let movers = [];
 
 // Liquid
@@ -29,7 +29,6 @@ function draw() {
   liquid.display();
 
   for (let i = 0; i < movers.length; i++) {
-
     // Is the Mover in the liquid?
     if (liquid.contains(movers[i])) {
       // Calculate drag force
@@ -48,10 +47,8 @@ function draw() {
     movers[i].display();
     movers[i].checkEdges();
   }
-
 }
 
-
 function mousePressed() {
   reset();
 }
@@ -74,8 +71,12 @@ let Liquid = function(x, y, w, h, c) {
 // Is the Mover in the Liquid?
 Liquid.prototype.contains = function(m) {
   let l = m.position;
-  return l.x > this.x && l.x < this.x + this.w &&
-         l.y > this.y && l.y < this.y + this.h;
+  return (
+    l.x > this.x &&
+    l.x < this.x + this.w &&
+    l.y > this.y &&
+    l.y < this.y + this.h
+  );
 };
 
 // Calculate drag force
@@ -127,23 +128,15 @@ Mover.prototype.update = function() {
 Mover.prototype.display = function() {
   stroke(0);
   strokeWeight(2);
-  fill(255,127);
+  fill(255, 127);
   ellipse(this.position.x, this.position.y, this.mass * 16, this.mass * 16);
 };
 
 // Bounce off bottom of window
 Mover.prototype.checkEdges = function() {
-  if (this.position.y > (height - this.mass * 8)) {
+  if (this.position.y > height - this.mass * 8) {
     // A little dampening when hitting the bottom
     this.velocity.y *= -0.9;
-    this.position.y = (height - this.mass * 8);
+    this.position.y = height - this.mass * 8;
   }
 };
-
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-