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Title	Random Infected Walkers
ID	5898727056359424
Created	Unknown
Updated	5 years ago, 1586112205222
Code	/* A simulation of walkers randomly walking up and down sidewalks and possibly infecting each other. Spin-off ideas: * Add a probability of infection in the maybeInfect function, so that walking into another walker's radius doesn't instantly effect * Teach the walkers to socially distance from each other (see the attractors/repellers lesson in natural simulations course) / // First two walkers always start off as infected (lines 73-74) var startInfectedChance = 0.10; // chance that a new walker starts off infected var newWalkerDelay = 3000; // 1 walker every X milliseconds frameRate(20); var Walker = function(xMin, xMax, isInfected) { this.xMin = xMin; this.xMax = xMax; var sideToSpawn = floor(random(0, 2)); if (sideToSpawn === 0) { // top this.x = floor(random(this.xMin, this.xMax)); this.y = 0; this.direction = -1; } else if (sideToSpawn === 1) { // bottom this.x = floor(random(this.xMin, this.xMax)); this.y = height; this.direction = 1; } this.speed = random(0.5, 3); this.isInfected = isInfected; this.infectionRadius = 30; }; Walker.prototype.display = function() { strokeWeight(6); stroke(0, 0, 0); point(this.x, this.y); if (this.isInfected) { strokeWeight(1); stroke(255, 0, 0); noFill(); ellipse(this.x, this.y, this.infectionRadius, this.infectionRadius); } }; Walker.prototype.walk = function() { var r = random(1); if (r < 0.15) { this.x = min(this.x + this.speed, this.xMax); } else if (r < 0.3) { this.x = max(this.x - this.speed, this.xMin); } else { this.y -= this.speed this.direction; } if (this.y < 0) { //this.y = height; } else if (this.y > height) { //this.y = 0; } }; Walker.prototype.maybeInfect = function(otherWalker) { // if neither is infected yet or both are infected, // no new infecting can happen if (!(this.isInfected \|\| otherWalker.isInfected) \|\| (this.isInfected && otherWalker.isInfected)) { return false; } if (dist(this.x, this.y, otherWalker.x, otherWalker.y) <= this.infectionRadius) { this.isInfected = true; otherWalker.isInfected = true; return true; } }; var leftSideXMin = 20; var leftSideXMax = 80; var rightSideXMin = 320; var rightSideXMax = 380; var lastSpawn = millis(); var walkers = []; walkers.push(new Walker(leftSideXMin, leftSideXMax, true)); walkers.push(new Walker(rightSideXMin, rightSideXMax, true)); var numInfected = walkers.length; var numWalkers = walkers.length; draw = function() { background(74, 199, 28); // sidewalks fill(201, 201, 201); noStroke(); rect(leftSideXMin, 0, leftSideXMax-leftSideXMin, height); rect(rightSideXMin, 0, rightSideXMax-rightSideXMin, height); fill(176, 176, 176); rect(leftSideXMax, 0, 10, height); rect(rightSideXMin-10, 0, 10, height); // road fill(87, 87, 87); rect(leftSideXMax + 10, 0, rightSideXMin - leftSideXMax - 20, height); for (var y = 0; y < height; y += 30) { fill(255, 242, 0); rect(width/2, y, 5, 15); } for (var y = -81; y < height; y += 60) { image(getImage("cute/TreeShort"), -71, y); image(getImage("cute/TreeShort"), 368, y); } for (var i = (walkers.length - 1); i >= 0; i--) { var walker = walkers[i]; walker.walk(); walker.display(); if (walkers.y < 0 \|\| walkers.y > height) { walkers.splice(i, 1); } } for (var i = 0; i < walkers.length; i++) { for (var j = 0; j < walkers.length; j++) { if (i !== j) { if (walkers[i].maybeInfect(walkers[j])) { numInfected++; } } } } if (millis() - lastSpawn > newWalkerDelay) { walkers.push( new Walker( leftSideXMin, leftSideXMax, random(1) < startInfectedChance) ); walkers.push( new Walker( rightSideXMin, rightSideXMax, random(1) < startInfectedChance) ); lastSpawn = millis(); numWalkers += 2; } textAlign(CENTER); textSize(20); text(numWalkers + "\n" + "walkers", 150, 30); text(numInfected + "\n" + "infected", 253, 30); };
Folds
Fork	false
Key	ag5zfmtoYW4tYWNhZGVteXIXCxIKU2NyYXRjaHBhZBiAgMnWxpu9Cgw
Votes	2449
Spin-Offs	377
Type
Width	400
Height	400
User Flagged	false
Origin Scratchpad	null
Hidden From Hotlist	false
Restricted Posting	false
By Child	false
Author Nick	pamela ❤
Author Name	pamela
Author ID	kaid_481802608512872365097525
Author Profile Access	PUBLIC

Archive Data

Added	1 years ago, 1707881062172
Updated	1 months ago, 1744820342536
Source Deleted	unknown