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Found 54 results

  1. Hello, Here's a PG: and here's what should happen: The problem is the large cylinder does not "lookAt" the smaller cylinder. The large cylinder is parented to an empty which in turn is parented to an animated mesh and I think that is where the problem is. Is this by design or am I being hard of thinking? Thank you,
  2. IKStreamIvo

    Parenting to sprites

    I have a sprite using (arcade) physics and I'm setting velocity to move around. When the player overlaps with a weapon, you can press a key to pick it up. I want the gun to be at an offset-ed position to the player and follow it around.. I thought parenting it was the easiest, but I can't figure out how to do it. Can anyone help me with this? 😃
  3. Hello, Say I have ParentName > ChildName1 > ChildName2 > ChildName3, is there a quick way to have Babylon tell me the name of the ultimate parent, no matter which child I choose? I can get immediate parent using... scene.meshes[i].parent ... but I need to go right to the top. Cheers,
  4. Hi I'm trying to create a scene where randomly generated balloons move across the screen with toys hanging from them. When the user clicks the balloon the toy will drop and either hit or miss a basket. I would like to use a tween on the y position of each balloon so that they move up and down as well. I would like to use a tween on the toy so that it swings a bit (less important). I am thinking of setting up an array to push the balloon objects into so that I can push and pop as they are generated and destroyed. What is the best way to set up the parent > child relationship for the balloon and toys though please? Should I create a Phaser.GameObjects.Group() and create() the balloon and toy within that group and then push that group into my array? Or should I create each balloon and toy as a Phaser.GameObjects.Sprite and set a parent > child relationship somehow (I think you could use addChild() in Phaser 2?)? Or should I be using physics bodies and linking the toy to the balloon somehow, and then releasing that link to drop the toy when the balloon is clicked? Thanks! By the way, I don't know if it's helpful, but there is an error in\physics\arcade\circular body.js - "Uncaught ReferenceError: GetOverlapX is not defined".
  5. Howdy, Is it possible to create a group that contains a few meshes and then create instances of that group which includes the child meshes? How might one go about doing so? Thus far my attempts to create an instance of the group on creates the transform node but no children. Thanks! JPS
  6. Is it possible to get the absolute rotation of a child mesh, in the same way it is possible to get the absolute position of a child mesh via mesh.getAbsolutePosition?
  7. Hi, I've been using sprites but they don't seem to following the normal rules of being based off the parent objects position? I've made a quick example here to illustrate: Essentially the case seems to be: • A sprite can have another sprite as it's parent, but won't incorporate the parent's position • A sprite can have a mesh as it's parent, but won't incorporate the parent's position • A mesh cannot have a sprite as a parent • A mesh can have a mesh as a parent, and the child correctly follows the parent Is this correct? I was under the impression all objects with position should follow the parent:child positioning?
  8. Hi All, the issue I'm facing is probably trivial to solve but I couldn't find a solution. Basically I need to set the parent of a mesh (used as rotation pivot) to null after a rotation, because I need to use that pivot again for another group of meshes. I tried to use the following approach: var pos = box.getAbsolutePosition(); var rot = box.rotation; box.parent = null; box.setAbsolutePosition(pos); box.rotation = rot; but it seem to keep only the position, but not the rotation. I have created a simple playground to reproduce the problem : As you can see, when the animation is completed the bigger box returns to the original rotation. Any suggestion ? Thanks a lot in advance
  9. I am using the last official release 2.6.2. Given the following code, which can be found on the following jsbin:,output var MainState={ create: function(){ var circleGraphic = new Phaser.Graphics(); circleGraphic.beginFill(0xFFBBBB); circleGraphic.drawCircle(0, 0, 100); circleGraphic.endFill(); circleSprite =, 0, circleGraphic.generateTexture()); //circleSprite.anchor.setTo(0.5); // (Try barSprite anchor below first.) Ugh, this doesn't fix it... var barGraphic = new Phaser.Graphics(); barGraphic.beginFill(0x88FF88); barGraphic.lineTo(250, 0); barGraphic.lineTo(250, 10); barGraphic.lineTo(0, 10); barGraphic.lineTo(0, 0); barGraphic.endFill(); var barSprite =,, barGraphic.generateTexture()); barSprite.addChild(circleSprite); //barSprite.anchor.setTo(0.5); // Why doesn't the child adjust to the anchor with the parent? } }; var game = new Phaser.Game(640, 480, Phaser.CANVAS, 'phaser-example', MainState); As long as the two lines remain commented out, what is rendered makes perfect sense: 1. A circleSprite is created and registered to position 0,0 of the parent sprite that it is later attached to. 2. A barSprite is created and its top left is added to the center of the world. 3. The circleSprite is added as a child to barSprite, and consequently, the top left of that child sprite is found at 0,0 of the parent sprite. As a result, you can see a sort of sideways "b" graphically depicted. Now, my (reasonable?) assumption is that the parent barSprite can be treated like any ordinary sprite as a composite whole. Anything I do to the parent sprite should automatically cause cascaded adjustments to the children so that the parent sprite would behave as it would if it were just an individual sprite on its own without any children behavior artifacts. However, if you notice, uncomment the line that sets the barSprite anchor, and the child does not follow. The child remains in place as if the anchor to the parent is not applied. To make matters worse, I have no easy recourse. I cannot recover the intended sideways "b" by uncommenting the circleSprite anchor. Is this a bug with anchor? Or is this intended behavior for some reason? What are my best options? (I am also curious if this behavior will exist in v3.) Also, please make me aware if you happen to see a violation of good/best practices!
  10. Hello It is possible turn off parent rotation ? var box = BABYLON.MeshBuilder.CreateBox("box1", 1, scene); var sphere = BABYLON.MeshBuilder.CreateSphere("sphere1", 1, scene); box.parent = sphere;
  11. Hi All, I have issue with clone mesh and cloned mesh attach to parent. After attached to parent cloned mesh position behaving strangely. Line 22-23-24 //behaving strangely I've been scratching my head for a while, any suggestion?
  12. Hi guys! Jus wanted to update regarding a new feature that was pushed today. Until today any mesh with a parent couldn't have its own physics impostor and was considered to be a part of a compound along with the parent. This behavior can now be controlled using a new flag in the impostor options (part of the constructor. The behavior can be best seen in this simple playground: . The right sphere is a simple mesh and has no impostor. the left sphere has its parent set to the right sphere, and the impostor is set with the ignoreParent flag. The right sphere's position is still updated when the parent mesh is moving, but it is also being controlled by the physics engine. Fun times!! Another flag that I added has the amazing long name disableBidirectionalTransformation (a boolean). This flag will disable the bidirection transofmration between the physics engine and babylon, meaning - changing the mesh's position in babylon will practically do nothing. The object will be controlled solely by the impostor. This is done to add a performance boost, as the transformation step is being skipped. I am here for any questions! The playground is not fully updated, so this feature will be there pretty soon. Until then you can think what you can do with it
  13. So.... to my great disappointment - yes, another one of those - it looks like parented meshes don't work with physics engine. Is there any workaround? I think it's impossible for me to unroll all parenting in the project, it would break animations and god knows what else... BTW it looks like @Wingnut is currently working on similar issues (poor physics support). thumbs up to you for all the great work
  14. jroosterman

    Freeze Rotation

    Hey Guys, I have an object parented to a modified ArcRotateCamera. The Camera can pan left and right. I want my object to move left and right with the camera but not rotate when the camera rotates around its target. Is there any way to freeze the rotations of a mesh so that it does not rotate with its parent?
  15. I'm fairly new to pixi.js and programming altogether. I am making a plugin that parses the xml save file of a sprite animation program and recreates the result in a game engine. The animation program uses bones for skeletal animations and the images (sprite parts) inherit the x, y, angle, scale_x, scale_y of the parent bone. The main idea would be to create sprites for the bones and the images, set up the bone inheritance to make the skeleton animation work correctly and then addChild the image sprites to the respective bone sprites. The only problem is that along with the aforementioned values, my image sprites also inherit the z_index of their container. The spriter does not limit the z hierarchy of the images to that of the parent bones, meaning that the user can change their z. I attempted to use worldTransform and worldAlpha for the parent bone values (keeping all the image sprites in a single container, thus controlling the z_index), but I am unable to get the parent bone's rotation. So, I either need to get all the values of the container and apply them correctly on the image sprites, or keep the image sprites inside the container and find a way to change their world z. Any suggestions would be appreciated and I thank you for your time.
  16. Hello there, What an amazing engine to render on webGL/Canvas! We are getting such a boost on performance thanks to this great library. Now, let's go to the point: We managed to partly migrate all our SVG animations to canvas using PixiJS. In order to do that, we had to parse our SVG so we could have a Container/Sprite/Textures structure that Pixi could manage and understand. We finally did it, and we have an Object like the onw you can see on the attached image: It is coming from the SVG you can find here: So, what we have, is a lot of containers (what used to be groups in our SVG) and inside them, more Containers and finally Sprites containing Textures (what used to be paths). THE PROBLEM: We want to use Pixi's AnimatedSprite class so we can animate the mouth of our character, and when we do it, it works, but we lose the position of our Textures and they show at the upper left corner of our character. I can't see any position on this Sprites and Textures, so I guess they are just drawed where they are supposed to be and therefore when we try to animate them, we lose this relativeness to the parent and position. Any way to make them stay in place? Thank you very very much
  17. hi all, i'm trying to calculate the boundingbox of a parent mesh, so that i may get a good camera asprect. but failed to get the boundingbox size of the parent. are there any tricks there? pg // Our built-in 'sphere' shape. Params: name, subdivs, size, scene var sphere = BABYLON.Mesh.CreateSphere("sphere1", 16, 2, scene); // Move the sphere upward 1/2 its height sphere.position.y = 1; // Our built-in 'ground' shape. Params: name, width, depth, subdivs, scene var ground = BABYLON.Mesh.CreateGround("ground1", 6, 6, 2, scene); var parent = new BABYLON.Mesh("parent",scene); sphere.parent = parent; ground.parent=parent; parent.showBoundingBox =true;
  18. Hi, have a problem with parenting physics objects together. Here an easy playground: Why is b dont collide with the ground too like the parent? I want both collide the ground and behave like one. Is it a bug?
  19. Hello guys, I have a little problem in my scenario. I am able to set the parent child relation among two meshes and i am able to move them along only if the parent mesh is dragged but not counter-wise. Both objects need to be able to be dragged and moved along together no matter which object is dragged. So i will be very thankful if anybody could help me. Thanks!
  20. gamify


    this.updateMovement( ); and this.parent( ); is not supporting in melonjs melonJS Game Engine v4.1.0 can anyone help for this
  21. Hello! I am working on a voxel project and creating a very basic voxel player. It has a box as head, a bigger box for body, etc. I created the whole thing like this: this.player_head = BABYLON.MeshBuilder.CreateBox(PLAYER_HEAD, {size: 1, updatable: true}, scene); this.player_body = BABYLON.MeshBuilder.CreateBox(PLAYER_BODY, {width: 1, depth: 0.5, height: 1.5, updatable: true}, scene); this.player_right_arm = BABYLON.MeshBuilder.CreateBox(PLAYER_RIGHT_ARM, {width: 0.5, depth: 0.5, height: 1.5, updatable: true}, scene); this.player_left_arm = BABYLON.MeshBuilder.CreateBox(PLAYER_LEFT_ARM, {width: 0.5, depth: 0.5, height: 1.5, updatable: true}, scene); this.player_right_leg = BABYLON.MeshBuilder.CreateBox(PLAYER_RIGHT_LEG, {width: 0.5, depth: 0.5, height: 1.5, updatable: true}, scene); this.player_left_leg = BABYLON.MeshBuilder.CreateBox(PLAYER_LEFT_LEG, {width: 0.5, depth: 0.5, height: 1.5, updatable: true}, scene); // Head this.player_head.parent = this.player_body; this.player_head.position.y += 1.25; // Right arm this.player_right_arm.parent = this.player_body; this.player_right_arm.position.x += 0.75; // Left arm this.player_left_arm.parent = this.player_body; this.player_left_arm.position.x -= 0.75; // Right leg this.player_right_leg.parent = this.player_body; this.player_right_leg.position.x -= 0.25; this.player_right_leg.position.y -= 1.5; // Left leg this.player_left_leg.parent = this.player_body; this.player_left_leg.position.x += 0.25; this.player_left_leg.position.y -= 1.5; Since I need all the meshes to be treated as a single mesh, I merged them with: BABYLON.Mesh.MergeMeshes([this.player_head, this.player_body, this.player_right_arm, this.player_left_arm, this.player_left_leg, this.player_right_leg]); Until here, all beautiful and nice. But a problem arises: I want to be able to move the arms, legs and head to make some sort of animation for walking but it doesn't seem to work. My player object has the references to all the meshes before the merging, so I thought I would still be able to transform them even after the merging. What's wrong then? Also, is there perchance a better way to create a bunch of simple meshes, apply a specific material to each of them and then 'merging' them into 1 bigger BABYLON.Mesh without losing their individual texture/material? MergeMeshes destroys the materials of the children objects, which is quite bad :/.
  22. Hi, I hope someone can help me. I want to export my Blender model with the Babylon.js Blender Exporter and import it in my App. In general this works fine, but I have one problem that I can't solve. In Blender I added a parent connection between a plane and a bone of my armature. The idea is that the plane should move if the bone moves. In Blender this works fine, but not with Babylon if I import the exported scene (tried my app and the BABYLON sandbox). Now I have two problems (which may be related to each other ?) 1. The plane is in a different place in Babylon (compared to the Blender model) 2. The parent connection is not exported and if I set the connection in my app directly after the import the plane moves to a weird place (but it follows the bone) Would be nice if someone can have a look at my Blender model. In my model there are actually two planes LED.L and LED.R and a want to attach these planes to the Neck bone of my ReetiArmature. Reeti.blend Reeti.babylon
  23. Hi there, I'm working on a little project where I do a lot of parenting and swapping parents/children around, etc.. Is there an easy way to preserve a child's world position when changing its parent? I'm really new to Babylon so I don't always know what's available to me. If this doesn't exist how would I go about it? Inverse the parent's world matrix and apply to it its child? If someone has an example handy I'd appreciate Thanks!
  24. Hi there! So here's my issue. I have a player sprite which has an orb sprite attached to it as a child. Player = function (game, x, y, image) {, game, x, y, image); //calls constructor this.orb = this.addChild(game.make.sprite(0, 0, 'orb')); game.add.existing(this); }; /*--------------------------------------------------------*/ Player.prototype = Object.create(Phaser.Sprite.prototype); Player.prototype.constructor = Player; /*--------------------------------------------------------*/ I want to reference the x and y positions of the orb so that I can shoot bullets out of it. BUT, if I console.log(this.orb.x) or the y position, the value that is returned is 0. What do I do so that I can get the x and y positions of the orb, relative to the game world and not the parent sprite??
  25. Hi @all, I have a new Demo with strange camera behavior: In the Demo is one player again (green box). The player has two children: the camera and a red box. The red box is the view direction of the player. You can move the player with WASD and the camera with the arrowkeys. Now the Problem: You can rotate the player body by pressing the R key. I rotate also the camera, but the camera.getTarget() is very wrong. You can check it by moving around with the camera after some rotations. Similar problem if I dont rotate the camera. I want the vector of the camera view direction if I use camera.getTarget(), like i get if there is still no rotation.