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Program thumbnail for "{props.program.title}"

Title	A Shark's Life
ID	4574574299463680
Created	5 years ago, 1589387607172
Updated	5 years ago, 1589468660046
Code	/** __A Shark's Life__ Released: 05/13/20 Made for Primavera 2020 Science Challenge \| Team Mantattack Like this? Subscribe here: khanacademy.org/cs/bluebirds-website/4592583369588736 // NOTE TO JUDGES: I know that this is 2 days past the deadline, and I understand if you disqualify this or take away points for a late entry, but I would be really glad if this were included in the scoring. For the last several days I've had almost no internet access and had not been able to finish this. GOAL: As the apex predator in the area, you're tasked with maintaining the population of fish at a stable level, don't let the number get too high, but don't let them go extinct either! Have fun chasing fish all day :) HOW: Turn with the arrow keys, and press the up arrow key to get a burst of speed when the burst bar is filled. HOW IT WORKS: - Each creature has a psoition, velocity, and acceleration. - The fish flock together in schools. (lookup Boids algorithm) - The fish avoid the edges and the shark. - There are 2 different kinds of fish, with different speeds and flocking parameters. (the bigger ones are harder to catch) / var keys = []; rectMode(CENTER); textFont(loadFont("monospace",40)); textAlign(CENTER,CENTER); //Boundary of the "ocean" var boundary = { left: -800, top: -800, right: 800, bottom: 800 }; // Noise wave texture var tex = function(xOff,yOff,w,h){ loadPixels(); noiseDetail(2,0.7); var pxls = imageData.data; var x,y; for(var i=0;i<widthh4;i+=4){ x = (i/4) % width; y = ((i/4)-x)/width; pxls[i] = 70; pxls[i+1] = 130; pxls[i+2] = 220; pxls[i+3] = 40+noise((x+xOff)/50,(y+yOff)/50)100; if(x>w){ i+=(width-w)4; } } updatePixels(); var img = get(2,0,w,h); return img; }; var tiles=[]; var texSize = 200; // Vector Library{ var V2 = function(x,y){ if(y !== undefined){ return {x:x,y:y}; } else { return {x:x.x,y:x.y}; } }; var addV2 = function(v1,v2){ return V2(v1.x + v2.x,v1.y + v2.y); }; var subV2 = function(v1,v2){ return V2(v1.x - v2.x,v1.y - v2.y); }; var multV2 = function(v1,factor){ return V2(v1.xfactor,v1.yfactor); }; var divV2 = function(v1,s){ return V2(v1.x/s,v1.y/s); }; var normV2 = function(v1){ var mag = sqrt((v1.xv1.x)+(v1.yv1.y)); return V2(v1.x/mag,v1.y/mag); }; var magV2 = function(v1){ return sqrt((v1.xv1.x) + (v1.yv1.y)); }; var limitV2 = function(v1,s){ if(magV2(v1) > s){ return multV2(normV2(v1),s); } return V2(v1.x,v1.y); }; var rotateV2 = function(v1,theta){ var cosT = cos(theta); var sinT = sin(theta); return V2( (cosTv1.x)-(sinTv1.y), (sinTv1.x)+(cosTv1.y)); }; //} //Base mover class var Agent = function(x,y,vel){ this.pos = V2(x,y); this.vel = vel \|\| V2(random(-2,2),random(-2,2)); // this.vel = V2(1,0); this.acc = V2(0,0); this.mass = 3; this.maxSpeed = 1; this.maxForce = 0.1; }; Agent.prototype = { update: function(){ this.vel = addV2(this.vel,this.acc); this.vel = limitV2(this.vel,this.maxSpeed); this.pos = addV2(this.pos,this.vel); this.acc = V2(0,0); if(this.hasBoundary){ this.pos.x = constrain(this.pos.x,this.minX,this.maxX); this.pos.y = constrain(this.pos.y,this.minY,this.maxY); } }, applyForce: function(f){ this.acc = addV2(this.acc, divV2(f,this.mass)); }, setBoundary: function(minX,maxX,minY,maxY){ this.minX = minX; this.maxX = maxX; this.minY = minY; this.maxY = maxY; this.hasBoundary = true; }, avoidBoundary: function(avoidDist){ var desired = V2(this.vel); if(this.pos.x<this.minX+avoidDist){ desired.x += this.maxSpeed; } if(this.pos.x>this.maxX-avoidDist){ desired.x+= -this.maxSpeed; } if(this.pos.y<this.minY+avoidDist){ desired.y += this.maxSpeed; } if(this.pos.y>this.maxY-avoidDist){ desired.y += -this.maxSpeed; } desired = limitV2(desired, this.maxSpeed); var steer = subV2(desired,this.vel); this.applyForce(limitV2(steer,this.maxForce)); }, display: function(){ pushMatrix(); translate(this.pos.x,this.pos.y); rotate(atan2(this.vel.y,this.vel.x)); stroke(0); line(0,0,10,0); ellipse(0,0,10,10); popMatrix(); } }; // Small fish var Fish = function(){ Agent.apply(this, arguments); this.age = 0; this.mass = 2; this.maxSpeed = 1.5; this.maxForce = 0.2; this.lifeSpan = 2000; this.R0 = 1.25; }; Fish.prototype = Object.create(Agent.prototype); Object.assign(Fish.prototype,{ constructor: Fish, display: function(){ pushMatrix(); translate(this.pos.x,this.pos.y); rotate(atan2(this.vel.y,this.vel.x)); scale(0.4); noStroke(); fill(76, 117, 135); triangle(24,0,-5,-20,-5,20); triangle(-30,0,-47,0,-50,7); triangle(-30,0,-50,-7,-47,0); ellipse(2,0,59,20); triangle(-45,0,-20,-7,-20,7); popMatrix(); }, attractWithin: function(attractors,attractDist){ var force = V2(0,0); var c = 0; var t = this; attractors.forEach(function(attractor){ var d = dist(attractor.pos.x,attractor.pos.y,t.pos.x,t.pos.y); if(d < attractDist && d>0){ var dir = subV2(attractor.pos,t.pos); force = addV2(force, multV2(normV2(dir),t.maxSpeedattractor.mass/1)); c++; } }); var steer = subV2(divV2(force,c),t.vel); var steer = limitV2(steer,t.maxForce); if(c>0){ this.applyForce(steer); } }, repulse: function(repulsers,okayDist){ var force = V2(0,0); var c = 0; var t = this; repulsers.forEach(function(repulser){ var d = dist(repulser.pos.x,repulser.pos.y,t.pos.x,t.pos.y); if(d < okayDist && d > 0){ var dir = subV2(t.pos,repulser.pos); var mag = magV2(dir); var desired = divV2(normV2(dir),map(d,0,okayDist,0,t.maxSpeed)); force = addV2(force, desired); c++; } }); var steer = subV2(multV2(normV2(force),this.maxSpeed),t.vel); var steer = limitV2(steer,t.maxForce); if(c>0){ this.applyForce(multV2(steer,1.5)); } }, align: function(others, alignDist){ var force = V2(0,0); var c = 0; var t = this; others.forEach(function(other){ var d = dist(other.pos.x,other.pos.y,t.pos.x,t.pos.y); if(d < alignDist && d > 0){ var desired = multV2(normV2(other.vel),t.maxSpeed); force = addV2(force,desired); c++; } }); var steer = subV2(multV2(normV2(divV2(force,c)),this.maxSpeed),this.vel); var steer = limitV2(steer,this.maxForce); if(c>0){ this.applyForce(multV2(steer,0.6)); } }, run: function(allFish){ this.repulse(allFish,30); this.align(allFish,100); this.attractWithin(allFish,100); this.avoidBoundary(150); this.update(); this.age++; this.display(); }, }); // Big Fish var BigFish = function(){ Agent.apply(this, arguments); this.age = 0; this.mass = 4; this.maxSpeed = this.mass/1.5; this.maxForce = this.maxSpeed/5; this.lifeSpan = 3000; this.R0 = 1.1; }; BigFish.prototype = Object.create(Fish.prototype); Object.assign(BigFish.prototype,{ constructor: BigFish, display: function(){ pushMatrix(); translate(this.pos.x,this.pos.y); rotate(atan2(this.vel.y,this.vel.x)); scale(0.6); noStroke(); fill(52, 70, 150); triangle(24,0,-5,-20,-5,20); triangle(-30,0,-47,0,-50,7); triangle(-30,0,-50,-7,-47,0); ellipse(3,0,59,20); triangle(-45,0,-20,-7,-20,7); popMatrix(); }, run: function(allFish){ this.repulse(allFish,50); this.align(allFish,60); this.attractWithin(allFish,60); this.avoidBoundary(150); this.update(); this.age++; this.display(); }, }); // School class manages a kind of fish. var School = function(fishF, number){ this.fishs = []; this.genFish = fishF; for(var i=0;i<number;i++){ var fish = fishF(this.fishs); fish.age = random(0,fish.lifeSpan); this.fishs.push(fish); } }; School.prototype.run = function(){ this.fishs.forEach(function(fish,i,fishs){ fish.run(fishs); if(fish.age > fish.lifeSpan){ fishs.splice(i,1); } }); if(this.fishs.length > 1 && frameCount % floor(this.fishs[0].lifeSpan/this.fishs[0].R0/this.fishs.length) === 0){ this.fishs.push(this.genFish(this.fishs)); this.fishs[this.fishs.length-1].setBoundary(boundary.left,boundary.right,boundary.top,boundary.bottom); } }; School.prototype.flee = function(shark,wariness){ this.fishs.forEach(function(fish,i,fishs){ fish.repulse(shark,wariness); }); }; // Player (shark) var Player = function(){ Agent.apply(this, arguments); this.mass = 15; this.vel = V2(this.maxSpeed,0); this.maxSpeed = 4; this.burstSpeed = 6; this.normMaxSpeed = this.maxSpeed; this.burstLength = 70; this.burstTime = 70; this.isBursting = false; this.maxForce = 5; this.numEaten = 0; }; Player.prototype = Object.create(Agent.prototype); Object.assign(Player.prototype,{ constructor: Player, display: function(){ pushMatrix(); translate(this.pos.x,this.pos.y); rotate(atan2(this.vel.y,this.vel.x)); scale(1.5); noStroke(); fill(104, 129, 140); triangle(14,0,0,-20,0,20); triangle(-30,0,-41,0,-50,10);//right fin triangle(-30,0,-50,-10,-41,0);//left fin ellipse(10,0,40,18); ellipse(0,0,40,18); triangle(-42,0,-10,-8,-10,8); fill(63, 67, 71); ellipse(22,5,3,2); ellipse(22,-5,3,2); popMatrix(); }, handleKeys: function(){ if(keys[UP] && this.burstTime > 0){ if(this.burstTime >= this.burstLength){ this.isBursting = true; } if(this.isBursting){ this.maxSpeed = this.burstSpeed; this.acc = limitV2(V2(this.vel),this.maxForce/2); this.burstTime--; } else{ void(this.burstTime < this.burstLength && this.burstTime++); } } else { this.isBursting = false; this.maxSpeed = this.normMaxSpeed; void(this.burstTime < this.burstLength && this.burstTime++); } if(keys[LEFT]){ this.applyForce(limitV2(rotateV2(this.vel,-90),this.maxForce)); } else if(keys[RIGHT]){ this.applyForce(limitV2(rotateV2(this.vel,90),this.maxForce)); } }, eat: function(fishs){ var t = this; var dir = multV2(normV2(this.vel),40); fishs.forEach(function(fish,i){ if(dist(t.pos.x+dir.x,t.pos.y+dir.y,fish.pos.x,fish.pos.y) < 20){ t.numEaten+=1; fishs.splice(i,1); } }); }, run: function(allFish){ this.handleKeys(); this.update(); this.display(); } }); var init = function (){ var fishies = new School( function(fishs){ if(random() < 0.1 \|\| fishs.length === 0){ return new Fish(random(boundary.left,boundary.right),random(boundary.top,boundary.bottom)); } var f = (fishs[floor(random(0,fishs.length))]); if(f){ return new Fish(f.pos.x+random(10,20),f.pos.y+random(10,20)); } },20 ); var bigFishies = new School( function(fishs){ if(random() < 0.15 \|\| fishs.length === 0){ return new BigFish(random(boundary.left,boundary.right),random(boundary.top,boundary.bottom)); } var f = (fishs[floor(random(0,fishs.length))]); if(f){ return new BigFish(f.pos.x+random(10,20),f.pos.y+random(10,20)); } },10 ); fishies.fishs[0].pos = V2(100,200); fishies.fishs[1].pos = V2(130,280); fishies.fishs[2].pos = V2(480,280); bigFishies.fishs[0].pos = V2(200,400); bigFishies.fishs[1].pos = V2(400,380); var setBound = function(fish){ fish.setBoundary(boundary.left,boundary.right,boundary.top,boundary.bottom); }; bigFishies.fishs.forEach(setBound); fishies.fishs.forEach(setBound); var player = new Player(width/2,height/2); player.setBoundary(boundary.left,boundary.right,boundary.top,boundary.bottom); var texX = boundary.left; var scene = "start"; var startTime, time; draw = function() { // load wave texture if(texX<boundary.right){ for(var y=boundary.top;y<boundary.bottom;y+=texSize){ var img = tex(texX,y,texSize,texSize); img.worldX = texX; img.worldY = y; tiles.push(img); } texX+=texSize; } background(207, 234, 252); if(scene === "start"){ for(var i=0;i<tiles.length;i++){ if(intersect(player.pos.x-width/2,player.pos.y-width/2,player.pos.x+width/2,player.pos.y+width/2,tiles[i].worldX,tiles[i].worldY,tiles[i].worldX+tiles[i].width,tiles[i].worldY+tiles[i].height)){ image(tiles[i],tiles[i].worldX,tiles[i].worldY); } } fill(0); textSize(80); text("A Shark's \nLife",300,120); textSize(40); text("< click to begin >",300,480); player.display(); fishies.fishs[0].display(); fishies.fishs[1].display(); fishies.fishs[2].display(); bigFishies.fishs[0].display(); bigFishies.fishs[1].display(); } else if(scene === "game"){ pushMatrix(); translate(-player.pos.x+width/2,-player.pos.y+height/2); fill(135, 207, 255); rectMode(CENTER); rect(0,0,1550,1550); for(var i=0;i<tiles.length;i++){ if(intersect(player.pos.x-width/2,player.pos.y-width/2,player.pos.x+width/2,player.pos.y+width/2,tiles[i].worldX,tiles[i].worldY,tiles[i].worldX+tiles[i].width,tiles[i].worldY+tiles[i].height)){ image(tiles[i],tiles[i].worldX,tiles[i].worldY); } } fishies.run(); bigFishies.run(); player.run(); popMatrix(); player.eat(fishies.fishs); player.eat(bigFishies.fishs); bigFishies.flee([player],100); fishies.flee([player],100); //display bar{ rectMode(CORNER); fill(255,100); rect(0,0,width,height/10); fill(170); if((player.isBursting \|\| player.burstTime === player.burstLength)){ stroke(0); } strokeWeight(3); rect(10,12,100,30); fill(0); textSize(20); text("BURST",55,27); noStroke(); fill(252, 220, 41,200); rect(11,13,(player.burstTime/player.burstLength)*99,29); fill(0); text("Time: "+floor((millis()-startTime)/1000)+ " seconds",275, 34); var numFish = (fishies.fishs.length+bigFishies.fishs.length); text("# of Fish: "+numFish,width-130,34); // } // check if game chould be over. if(numFish > 150 \|\| fishies.fishs.length < 2 \|\| bigFishies.fishs.length < 2){ scene = "end"; time = millis() - startTime; } } else if(scene === "end"){ fill(0); textSize(70); text("Uh, Oh!",300,100); textSize(30); if(fishies.fishs.length+bigFishies.fishs.length > 150){ text("The number of fish grew out control",300,280); } else if(fishies.fishs.length < 1 \|\| bigFishies.fishs.length < 1){ text("One of the kinds of fish went extinct!",300,280); } text("You lasted "+floor(time/1000)+" seconds",300,440); textSize(20); text("< Restart to try again >",300,500); } }; keyPressed = function(){ keys[keyCode] = !0; }; keyReleased = function(){ keys[keyCode] = !1; }; mouseReleased = function(){ if(scene === "start"){ scene = "game"; startTime = millis(); } }; }; init();
Folds	0,6,31,36,39,58,63,103,106,114,115,164,167,176,178,260,263,272,274,299,302,310,311,322,323,327,330,346,348,412,414,592
Fork	true
Key	ag5zfmtoYW4tYWNhZGVteXIXCxIKU2NyYXRjaHBhZBiAgPmg0ZGQCAw
Votes	228
Spin-Offs	24
Type	PJS
Width	600
Height	600
User Flagged	false
Origin Scratchpad	{"id":"project-creature-colonies","title":"Project: Creature Colonies","deleted":"false","official":"true"}
Hidden From Hotlist	false
Restricted Posting	false
By Child	false
Author Nick	𝘉𝘭𝘶𝘦𝘣𝘪𝘳𝘥
Author Name	Birdwatcher03
Author ID	kaid_157624541333313939750668
Author Profile Access	PUBLIC

Archive Data

Added	10 months ago, 1739364123787
Updated	10 months ago, 1739364129722
Source Deleted	unknown