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No collision between circles and drawn lines in matter.js

I am having trouble creating a line in p5/matter.js. My sketch is available on the p5 editor. On mousePressed and mouseDragged, the code grabs the mouse position every ten moves and uses curveVertex to draw a line between the current and last point. All of these points are stored in an array. This draws on the canvas perfectly but cannot interact with other objects.
function mouseDragged(){
if (pointCount == 0) {
points.push({x: mouseX, y: mouseY});
pointCount += 1;
} else if (pointCount == 10) {
pointCount = 0;
} else {
pointCount += 1;
}
}
function mousePressed(){
points.push({x: mouseX, y: mouseY});
}
function mouseReleased(){
line = new Line(points);
console.log(points);
}
function draw() {
background("#efefef");
circles.push(new Circle(200, 50, random(5, 10)));
Engine.update(engine);
for (let i = 0; i < circles.length; i++) {
circles[i].show();
if (circles[i].isOffScreen()) {
circles[i].removeFromWorld();
circles.splice(i, 1);
i--;
}
}
// for (let i = 0; i < boundaries.length; i++) {
// boundaries[i].show();
// // console.log(boundaries[i].body.isStatic)
// }
if (points.length > 0) {
// Loop through creating line segments
beginShape();
noFill();
// Add the first point
stroke('black');
strokeWeight(5);
curveVertex(points[0].x,points[0].y)
curveVertex(points[0].x,points[0].y)
// Draw line
points.forEach(function(p){
curveVertex(p.x,p.y);
})
vertex(points[points.length-1].x,points[points.length-1].y) // Duplicate ending point
endShape()
}
// Draw points for visualization
stroke('#ff9900')
strokeWeight(10)
// points.push({x: x, y: y})
points.forEach(function(p){
point(p.x, p.y)
})
}
I tried creating a class and passed the points array to it, thinking that the matter.vertices function would take the points and make the needed body for the falling balls to bounce off. The code does not throw an error, but no collision occurs with the line. The example provided in matter.js document for the vertices function is unavailable and I have been unable to find any examples online. Hoping someone can point me in the right direction to get the created line to interact with the falling balls.
class Line {
constructor(vertices) {
let options = {
friction:0,
restitution: 0.95,
// angle: a,
isStatic: true
}
this.body = Matter.Body.create(options);
this.v = Matter.Vertices.create(vertices, this.body)
World.add(world, this.body);
}
}

How to collide a player with walls?

I'm trying to create a top down shooter game and I am using Tiled to create my map. I've made my map and exported it as a .json file. I was finally able to make the map appear in my game, but I am having a hard time making the collision work.
I've been going through tutorials for hours and seem to have tried everything under the sun with no luck. I have an object layer in Tiled with the walls marked with the insert rectangle tool. I have every wall tile also marked with insert rectangle in the edit tileset menu. But I still cant get it to work. Walls are Tile Layer 1, ground is Tile Layer 2, object layer is called collision and the tile set name is tiles 48x48. Here's all my relevant code:
var game = new Phaser.Game(1440, 960, Phaser.man, 'phaser-example', { preload: preload, create: create, update: update, render: render });
var sprite
//sounds
var music
//movement
var controls
var cursors
//shooting
var fireRate = 200;
var nextFire = 0;
var Bullets
//map
var map
var walls
var ground
//var collision
function preload() {
game.load.audio('groove', ['sewer groove.mp3']);
game.load.audio('gunshot', 'pistol.mp3');
game.load.image('player', 'player lite.png');
game.load.image('bullet', 'bullet.png');
game.load.tilemap('map', 'sewermap.json', null, Phaser.Tilemap.TILED_JSON);
game.load.image('tiles 48x48','tiles 48x48.png')
}
function create() {
map = game.add.tilemap('map');
map.addTilesetImage('tiles 48x48');
//var tileset = map.addTilesetImage('map','tiles 48x48');
//map.physics.arcade.enable(sprite, Phaser.Physics.ARCADE);
ground = map.createLayer('Tile Layer 2');
walls = map.createLayer('Tile Layer 1');
//collision = map.createLayer('Object Layer 1')
map.setCollisionBetween(0, 65, true, 'Tile Layer 1');
//sprite.body.collideWorldbounds = true;
//layer.resizeWorld();
music = game.add.audio('groove',1,true);
music.play();
game.physics.startSystem(Phaser.Physics.ARCADE);
//game.physics.startSystem(Phaser.Physics.P2JS)
game.stage.backgroundColor = '#313131';
bullets = game.add.group();
bullets.enableBody = true;
bullets.physicsBodyType = Phaser.Physics.ARCADE;
bullets.createMultiple(50, 'bullet');
bullets.setAll('checkWorldBounds', true);
bullets.setAll('outOfBoundsKill', true);
sprite = game.add.sprite(620, 920, 'player');
sprite.anchor.set(0.5, 0.5);
//game.physics.p2.enable(sprite)
game.physics.arcade.enable(sprite, Phaser.Physics.ARCADE);
sprite.body.allowRotation = true;
cursors = game.input.keyboard.createCursorKeys();
}
function update() {
game.physics.arcade.collider(sprite, walls);
//console.log(sprite.rotation);
sprite.rotation = game.physics.arcade.angleToPointer(sprite);
if (game.input.activePointer.isDown)
{
fire();
}
//sprite.body.setZeroVelocity();
if (game.input.keyboard.isDown(Phaser.Keyboard.LEFT))
{
sprite.x -= 4;
}
else if (game.input.keyboard.isDown(Phaser.Keyboard.RIGHT))
{
sprite.x += 4;
}
if (game.input.keyboard.isDown(Phaser.Keyboard.UP))
{
sprite.y -= 4;
}
else if (game.input.keyboard.isDown(Phaser.Keyboard.DOWN))
{
sprite.y += 4;
}
}
function fire() {
if (game.time.now > nextFire && bullets.countDead() > 0)
{
nextFire = game.time.now + fireRate;
var bullet = bullets.getFirstDead();
bullet.reset(sprite.x - 8, sprite.y - 8);
game.physics.arcade.moveToPointer(bullet, 300);
}
}
function render() {
game.debug.text('Active Bullets: ' + bullets.countLiving() + ' / ' + bullets.total, 32, 32);
game.debug.spriteInfo(sprite, 32, 450);
//game.debug.spriteBounds(sprite);
//game.debug.spriteBounds(bullets);
//game.debug.body(sprite);
}

Alright, I've had the chance to take a look at this, the issue should solely lie in how you're moving the main player:
sprite.x -= 4;
Collisions only fire if the body has a velocity, the following table by samme should sum it up
You can apply acceleration, for the sake of example, to move the character towards the direction you're pointing at:
if (game.input.keyboard.isDown(Phaser.Keyboard.UP) || game.input.keyboard.isDown(Phaser.Keyboard.W)) {
game.physics.arcade.accelerationFromRotation(sprite.rotation, 200, sprite.body.acceleration);
}
In the image I'm also applying a certain drag and reducing acceleration when nothing is pressed but that's your call:
sprite.body.drag.x = 200;
sprite.body.drag.y = 200;
If you wanted to strafe an idea could be at dealing with multiple presses and applying a different accelerationFromRotation accordingly (with a variety of degrees converted with Phaser.Math.degToRad)
For debug's sake, if needed, you might want to use some of the following:
[...]
walls = map.createLayer("Tile Layer 1");
walls.debug = true;
[...]
function collisionHandler(obj1, obj2) {
console.log("Colliding!", obj1, obj2)
}
game.physics.arcade.collide(sprite, walls, collisionHandler, null, this);
game.debug.body(sprite);

Make identical objects move independently in Javascript Canvas

So I am trying to make a simple space game. You will have a ship that moves left and right, and Asteroids will be generated above the top of the canvas at random X position and size and they will move down towards the ship.
How can I create Asteroid objects in seperate positions? Like having more than one existing in the canvas at once, without creating them as totally seperate objects with seperate variables?
This sets the variables I would like the asteroid to be created on.
var asteroids = {
size: Math.floor((Math.random() * 40) + 15),
startY: 100,
startX: Math.floor((Math.random() * canvas.width-200) + 200),
speed: 1
}
This is what I used to draw the asteroid. (It makes a hexagon shape with random size at a random x coordinate)
function drawasteroid() {
this.x = asteroids.startX;
this.y = 100;
this.size = asteroids.size;
ctx.fillStyle = "#FFFFFF";
ctx.beginPath();
ctx.moveTo(this.x,this.y-this.size*0.5);
ctx.lineTo(this.x+this.size*0.9,this.y);
ctx.lineTo(this.x+this.size*0.9,this.y+this.size*1);
ctx.lineTo(this.x,this.y+this.size*1.5);
ctx.lineTo(this.x-this.size*0.9,this.y+this.size*1);
ctx.lineTo(this.x-this.size*0.9,this.y);
ctx.fill();
}
I included ALL of my code in this snippet. Upon running it, you will see that I currently have a ship that moves and the asteroid is drawn at a random size and random x coordinate. I just need to know about how to go about making the asteroid move down while creating other new asteroids that will also move down.
Thank You for all your help! I am new to javascript.
// JavaScript Document
////// Variables //////
var canvas = {width:300, height:500, fps:30};
var score = 0;
var player = {
x:canvas.width/2,
y:canvas.height-100,
defaultSpeed: 5,
speed: 10
};
var asteroids = {
size: Math.floor((Math.random() * 40) + 15),
startY: 100,
startX: Math.floor((Math.random() * canvas.width-200) + 200),
speed: 1
}
var left = false;
var right = false;
////// Arrow keys //////
function onkeydown(e) {
if(e.keyCode === 37) {
left = true;
}
if(e.keyCode === 39) {
right = true;
}
}
function onkeyup(e) {
if (e.keyCode === 37) {
left = false;
}
if(e.keyCode === 39) {
right = false;
}
}
////// other functions //////
//function to clear canvas
function clearCanvas() {
ctx.clearRect(0,0,canvas.width,canvas.height);
}
// draw the score in the upper left corner
function drawscore(score) {
var score = 0;
ctx.fillStyle = "#FFFFFF";
ctx.fillText(score,50,50);
}
// Draw Player ship.
function ship(x,y) {
var x = player.x;
var y = player.y;
ctx.fillStyle = "#FFFFFF";
ctx.beginPath();
ctx.moveTo(x,y);
ctx.lineTo(x+15,y+50);
ctx.lineTo(x-15,y+50);
ctx.fill();
}
// move player ship.
function moveShip() {
document.onkeydown = onkeydown;
document.onkeyup = onkeyup;
if (left === true && player.x > 50) {
player.x -= player.speed;
}
if (right === true && player.x < canvas.width - 50) {
player.x += player.speed;
}
}
// Draw Asteroid
function drawasteroid() {
this.x = asteroids.startX;
this.y = 100;
this.size = asteroids.size;
ctx.fillStyle = "#FFFFFF";
ctx.beginPath();
ctx.moveTo(this.x,this.y-this.size*0.5);
ctx.lineTo(this.x+this.size*0.9,this.y);
ctx.lineTo(this.x+this.size*0.9,this.y+this.size*1);
ctx.lineTo(this.x,this.y+this.size*1.5);
ctx.lineTo(this.x-this.size*0.9,this.y+this.size*1);
ctx.lineTo(this.x-this.size*0.9,this.y);
ctx.fill();
}
// move Asteroid
function moveAsteroid() {
//don't know how I should go about this.
}
// update
setInterval (update, 1000/canvas.fps);
function update() {
// test collisions and key inputs
moveShip();
// redraw the next frame of the animation
clearCanvas();
drawasteroid();
drawscore();
ship();
}
<!doctype html>
<html>
<head>
<meta charset="UTF-8">
<title>My Game</title>
<script src="game-functions.js"></script>
<!--
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.5.7/angular.min.js"></script>
-->
</head>
<body>
<canvas id="ctx" width="300" height="500" style="border: thin solid black; background-color: black;"></canvas>
<br>
<script>
////// Canvas setup //////
var ctx = document.getElementById("ctx").getContext("2d");
</script>
</body>
</html>

You want to make the creation of asteroids dynamic...so why not set up a setInterval that gets called at random intervals as below. You don't need a separate declaration for each Asteroids object you create. You can just declare a temporary one in a setInterval function. This will instantiate multiple different objects with the same declaration. Of course you need to store each object somewhere which is precisely what the array is for.
You also have to make sure that asteroids get removed from the array whenever the moveAsteroid function is called if they are off of the canvas. The setInterval function below should be called on window load and exists alongside your main rendering setInterval function.
You are also going to have to change your moveAsteroid function a bit to be able to point to a specific Asteroids object from the array. You can do this by adding the Asteroids object as a parameter of the function or by making the function a property of the Asteroids class and using this. I did the latter in the example below.
var astArray = [];
var manageAsteroidFrequency = 2000;
var Asteroids {
X: //something
Y://something
speed:1
move: function() {
this.X -= speed;
}
}
var mainRenderingFunction = setInterval( function() {
for (var i = astArray.length-1 ; i > -1; i --){
if(astArray[i].Y < 0){
astArray.splice(i, 1)
}else{
astArray[i].move;
}
}
}, 40);
var manageAsteroids = setInterval( function () {
if (astArray.length < 4){
var tmpAst = new Asteroids();
astArray.push(tmpAst);
}
manageAsteroidFrequency = Math.floor(Math.random()*10000);
}, manageAsteroidFrequency);

Animating multiple items in Paper.js while anchored to a path

I have five rectangles placed at different points along a circle like this - http://imgur.com/uVYkwl7.
Upon clicking any rectangle i want the circle to move to the left of the screen, gradually scaling down it's radius until the circle's center reaches x=0. I'd like the five rectangles to move along with the circle while its being scaled down and also adjust their own positions and scale on the circle so that they are within the view's bounds, like this - http://imgur.com/acDG0Aw
I'd appreciate any help on how to go about doing this. Heres my code for getting to the 1st image and animating the circle:
var radius = 300;
var center = view.center;
var circle = new Path.Circle({
center: view.center,
radius: radius,
strokeColor: 'black',
name: 'circle'
});
var path = new Path.Rectangle({
size: [230, 100],
fillColor: '#1565C0'
});
var rectText = ['Text 1',
'Text 2',
'Text 3',
'Text 4',
'Text 5'
];
var symbol = new Symbol(path);
var corners = [
new Point(center.x, center.y - radius),
new Point(center.x - radius, center.y - radius / 2),
new Point(center.x + radius, center.y - radius / 2),
new Point(center.x - radius, center.y + radius / 2),
new Point(center.x + radius, center.y + radius / 2)
];
var rectClicked = false;
var clickedRect = null;
var rectClick = function(event) {
rectClicked = true;
clickedRect = this;
};
function onFrame(event) {
// Your animation code goes in here
if (rectClicked) {
for (var i = 0; i < 1; i++) {
var item = project.activeLayer.children[i];
if (item.name == 'circle') {
if (item.position.x < 0) {
rectClicked = false;
} else {
item.position.x -= 10;
item.scale(1/1.01);
}
}
}
}
}
// Place the instances of the symbol:
for (var i = 0; i < corners.length; i++) {
var placedSymbol = symbol.place(corners[i]);
placedSymbol.onMouseDown = rectClick;
var rText = new PointText({
point: placedSymbol.bounds.topLeft + 20,
content: rectText[i],
fontSize: '20',
fillColor: 'white'
});
}

Paper.js provides rotations around a pivot out of the box.
var pivotPoint = new Point(10, 5);
circle.rotate(30,pivotPoint);
Here is the docs reference for this behaviour and here is a very basic Sketch example to illustrate this
The above snippet will rotate a circle(you can change this to rectangle in your case) by 30 degrees around a pivot point at coordinates 10,5 on the x/y axis.
Thus what you describe is certainly doable as long as the path that your elements will follow is always circular.
Bear in mind that in order for the pivot rotation to work the way you want them to you need to update the pivotPoint and reinitiate the rotation again.
Note: In case you want to move along an arbitrary shape instead of circular path, you should search for Paper.js animation-along-a-path which is something that I've seen been done before without much difficulty - e.g this simple Sketch by the creator of Paper.js himself.
The sketch I provided above is a basic example of rotation around a pivot point.
I'm dumping the Sketch code here in case the link goes dead:
//Create a center point
var centerCircle = new Path.Circle(paper.view.center, 100);
centerCircle.strokeColor = 'black';
centerCircle.dashArray = [10, 12];
//Create the circles
var circle1Radius = 30;
var circle1 = new Path.Circle((centerCircle.position-centerCircle.bounds.width/2)+circle1Radius, circle1Radius);
circle1.fillColor = '#2196F3';
var circle2Radius = 40;
var circle2 = new Path.Circle((centerCircle.position-centerCircle.bounds.width/2)+circle2Radius, circle2Radius);
circle2.fillColor = '#E91E63';
var circle3Radius = 40;
var circle3 = new Path.Circle((centerCircle.position-centerCircle.bounds.width/2)+circle2Radius, circle2Radius);
circle3.fillColor = '#009688';
var i=0;
var animationGap = 125; //how long to move before animating the next circle
var rotationSpeed = 2;
function onFrame(event) {
circle1.rotate(rotationSpeed,centerCircle.position);
if(i>animationGap)
circle2.rotate(rotationSpeed,centerCircle.position);
if(i>animationGap*2)
circle3.rotate(rotationSpeed,centerCircle.position);
i++;
}

Tweened Kinetic.js shape doesn't fire most of clicks

Purpose
I'm making a simple "shoot the word" game, where user needs to click on some moving rectangles with words to "shoot" them.
Problem
So i create some objects and move them using simple kinetic.js tweening.
Word creation
function createWord(value){
//here comes some word object construction
var wordGroup = new Kinetic.Group({
x: 0,
y: 0
});
var padding = 10;
wordGroup.label = new Kinetic.Text({
x: padding,
y: padding,
text: value,
fontFamily: 'Times New Roman',
fontSize: 30,
fill: 'white'
});
wordGroup.tag = new Kinetic.Rect({
x: 0,
y: 0,
width: wordGroup.label.width() + (padding << 1),
height: wordGroup.label.height() + (padding << 1),
fill: 'black',
shadowColor: 'black',
shadowBlur: 10,
shadowOffset: {x:10,y:20},
shadowOpacity: 0.5,
cornerRadius: 10
});
wordGroup.add(wordGroup.tag);
wordGroup.add(wordGroup.label);
wordGroup.shoot = function(){ //shooting mechanism (simple stop from moving and remove from scene)
wordGroup.tween.pause();
wordGroup.clean();
dropNextWord(); //drops fresh blood! (new word instead of shooted)
}
wordGroup.clean = function(){ //remove from scene and set it free to drop again
wordGroup.remove();
wordGroup.isActive = false;
}
wordGroup.move = function(callback){ //animates word
wordLayer.add(wordGroup);
moveToSide(wordGroup, callback); //calls moving function
}
wordGroup.on('click', function(e){
wordGroup.shoot();
});
return wordGroup;
}
Tweening part
//move word to opposite side
function moveToSide(word, callback){
var side = Math.random();
var d = 100;
spawnFromSide(word, side); //set random side word position
tweenPosition = {
x: word.x(),
y: word.y()
}
if(side < 0.25){ //left
tweenPosition.x = - d;
} else if(side > 0.25 && side < 0.5){ //right
tweenPosition.x = defaultStageWidth + d;
} else if(side > 0.5 && side < 0.75){ //up
tweenPosition.y = - d;
} else { //down
tweenPosition.y = defaultStageHeight + d;
}
word.tween = new Kinetic.Tween({
node: word,
duration: 4,
easing: Kinetic.Easings.Linear,
x: tweenPosition.x,
y: tweenPosition.y,
onFinish: function(){
word.clean();
callback();
}
});
word.tween.play();
}
But the problem is that click event doesn't fire on large amount of user clicks. As i think, this caused by delayed drawHit() calls inside tweening mechanism, that draws new object position before updating the hit area, so when we shoot object thinking that we hit its current position we miss because its hit area still have the same old position.
Live example
http://jsfiddle.net/hd6z21de/7/
Take a minute on shooting to see this effect in action

Solved this weird behavior by listening canvas touches and check if pointer collide some target word-rect by myself instead of using their own onclick events.
//i listen to canvas because of my app specific, you could simple listen your own layer or even document
$("canvas").bind('click', function(event){
var x = (event.pageX) / stage.scaleX(); //you don't need to divide by scale if your stage isn't scaled as mine does
var y = (event.pageY) / stage.scaleY();
var wordArray = wordGroup.getChildren();
for(var i = 0; i < wordArray.length; i++){ //go through all words and check if we shoot someone (is mouse position included in some word rect)
if(x > wordArray[i].x() &&
y > wordArray[i].y() &&
x < (wordArray[i].x() + wordArray[i].width()) &&
y < (wordArray[i].y() + wordArray[i].height())){
wordArray[i].shoot(); //shoot that word
break;
}
}
}