Alexver

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  1. Alexver

    Rotating sprite with gyroscope

    Hi guys, I'm making a game which uses browser gyroscope data as player's input. The aim of the game is to align a bar controlled by the player with a bar that continuously rotates. In order to rotate player's bar, the phone must be tilted on its x axis. When holding the phone perfectly vertical (first image) there is no problem. But when the phone has some rotation on its y axis or is pointing downwards (second image), the rotation that I'm interested in is no longer correct. Is there any workaround to make x rotation relative to the position that the back of the phone is pointing to? It is ok to use any library. I've tried gyronorm.js and gyro.js so far, but none of them are giving me the desired results.
  2. Alexver

    Collisions not working when using Phaser & webpack

    Thank you. Thought it was my fault and it was driving me crazy!
  3. I'm making a game using Phaser, P2 physics and webpack. When it comes to P2 I can not use custom physic shapes because they won't collide with world bounds. I'm using Phaser webpack example template (https://github.com/photonstorm/phaser-ce/tree/master/resources/Project Templates/Webpack) and an example from the website (https://phaser.io/examples/v2/p2-physics/pick-up-object). The point is that when using custom colision shapes, entities won't collide. But they do if I use the default squared shapes or the circle ones that Phaser provide. The game code is simple and you can check it here: /** * Import Phaser dependencies using `expose-loader`. * This makes then available globally and it's something required by Phaser. * The order matters since Phaser needs them available before it is imported. */ import PIXI from 'expose-loader?PIXI!phaser-ce/build/custom/pixi.js'; import p2 from 'expose-loader?p2!phaser-ce/build/custom/p2.js'; import Phaser from 'expose-loader?Phaser!phaser-ce/build/custom/phaser-split.js'; var game = new Phaser.Game(800, 600, Phaser.CANVAS, 'phaser-example', { preload: preload, create: create, update: update, render: render }); function preload() { game.scale.scaleMode = Phaser.ScaleManager.SHOW_ALL; game.load.image('tetrisblock1', 'assets/sprites/tetrisblock1.png'); game.load.image('tetrisblock2', 'assets/sprites/tetrisblock2.png'); game.load.image('tetrisblock3', 'assets/sprites/tetrisblock3.png'); game.load.physics('physicsData', 'assets/physics/sprites.json'); } var tetris1; var tetris2; var tetris3; var mouseBody; var mouseConstraint; function create() { // Enable p2 physics game.physics.startSystem(Phaser.Physics.P2JS); game.physics.p2.gravity.y = 1000; tetris1 = game.add.sprite(300, 100, 'tetrisblock1'); tetris2 = game.add.sprite(375, 200, 'tetrisblock2'); tetris3 = game.add.sprite(450, 300, 'tetrisblock3'); // Create collision group for the blocks var blockCollisionGroup = game.physics.p2.createCollisionGroup(); // This part is vital if you want the objects with their own collision groups to still collide with the world bounds // (which we do) - what this does is adjust the bounds to use its own collision group. game.physics.p2.updateBoundsCollisionGroup(); // Enable the physics bodies on all the sprites game.physics.p2.enable([ tetris1, tetris2, tetris3 ], false); tetris1.body.clearShapes(); tetris1.body.loadPolygon('physicsData', 'tetrisblock1'); tetris1.body.setCollisionGroup(blockCollisionGroup); tetris1.body.collides([blockCollisionGroup]); tetris2.body.clearShapes(); tetris2.body.loadPolygon('physicsData', 'tetrisblock2'); tetris2.body.setCollisionGroup(blockCollisionGroup); tetris2.body.collides([blockCollisionGroup]); tetris3.body.clearShapes(); tetris3.body.loadPolygon('physicsData', 'tetrisblock3'); tetris3.body.setCollisionGroup(blockCollisionGroup); tetris3.body.collides([blockCollisionGroup]); // create physics body for mouse which we will use for dragging clicked bodies mouseBody = new p2.Body(); game.physics.p2.world.addBody(mouseBody); // attach pointer events game.input.onDown.add(click, this); game.input.onUp.add(release, this); game.input.addMoveCallback(move, this); } function click(pointer) { var bodies = game.physics.p2.hitTest(pointer.position, [ tetris1.body, tetris2.body, tetris3.body ]); // p2 uses different coordinate system, so convert the pointer position to p2's coordinate system var physicsPos = [game.physics.p2.pxmi(pointer.position.x), game.physics.p2.pxmi(pointer.position.y)]; if (bodies.length) { var clickedBody = bodies[0]; var localPointInBody = [0, 0]; // this function takes physicsPos and coverts it to the body's local coordinate system clickedBody.toLocalFrame(localPointInBody, physicsPos); // use a revoluteContraint to attach mouseBody to the clicked body mouseConstraint = this.game.physics.p2.createRevoluteConstraint(mouseBody, [0, 0], clickedBody, [game.physics.p2.mpxi(localPointInBody[0]), game.physics.p2.mpxi(localPointInBody[1]) ]); } } function release() { // remove constraint from object's body game.physics.p2.removeConstraint(mouseConstraint); } function move(pointer) { // p2 uses different coordinate system, so convert the pointer position to p2's coordinate system mouseBody.position[0] = game.physics.p2.pxmi(pointer.position.x); mouseBody.position[1] = game.physics.p2.pxmi(pointer.position.y); } function update() { } function render() { // game.debug.text(result, 32, 32); } If you need to have a look at the project, you can check it here: https://github.com/alexZalachenko/Phaser-Webpack Any toughts about why the collisions are not working when using custom collision shapes? Thanks in advance, Alex