im developing a game using andangine and the tmx and body2d extensions.
i create Objects(sprites) like coins an specific positions while creating my map.
i use a contactlistener to check if the player collides with a coin.
how can i delete this sprite?
and how can i organize my sprites best?
thanks =)
I assume you create a PhysicsConnector to connect between your sprites and bodies. Create a list of these physics connectors, and when you decide you should remove a body (And its sprite), do the following:
Body bodyToRemove = //Get it from your contact listener
for(PhysicsConnector connector : mPhysicsConnectors) //mPhysicsConnectors is the list of your coins physics connectors.
if(connector.getBody() == bodyToRemove)
removeSpriteAndBody(connector); //This method should also delete the physics connector itself from the connectors list.
About sprites organization: Coins are re-useable sprite, you shouldn't recreate them every time. You can use an object pool, here's a question about this topic.
I advice you to set user data of a body. And in your collision handler you would be able to work with it. Small example:
body.setUserData(...);
..
public void postSolve(Contact contact, ContactImpulse impulse) {
... bodyAType = (...) bodyA.getUserData();
... bodyBType = (...) bodyB.getUserData();
if (bodyAType != null && bodyBType != null) {
if (bodyAType.getUserData.equals(...)) {
//.......do what you need
}
}
}
Related
I want to duplicate my GLTF models with different positions/colors dynamically, to do so I have done:
const L_4_G = new Object3D();
...
const multiLoad_4 = (result, position) => {
const model = result.scene.children[0];
model.position.copy(position);
model.scale.set(0.05, 0.05, 0.05);
//
L_4_G.add(model.clone())
scene.add(model);
};
...
function duplicateModel4() {
L_4_G.translateX(-1.2)
L_4_G.translateY(0.0)//0.48
L_4_G.translateZ(1.2)
L_4_G.rotateY(Math.PI / 2);
scene.add(L_4_G);
}
I didn't find out how can I change the Object3D color from the documentation, can you please tell me how can I do that? thanks in advance.
Here is the full code that I'm using, and here are the models
Update
I have seen this solution, to store a set of colors in the object's userData and choose the color later:
L_2_G.userData.colors = {green : #00FF00, red : ..., ...}
L_2_G.children[0].material.color(userData.colors["green"])
But I'm getting an error that children[0] undefined, but I can see that this object has a child and a material, and color via the console: console.log(L_2_G.children), console.log(L_2_G.children.length)--> 0
Also I have tried getObjectByName as explained here:
scene.getObjectByName(name).children[0].material.color.set(color);
which also reslts: children[0] is undefined, scene.getObjectByName(name).children.length is 0.
THREE.Object3D is a base class for anything that can go in a scene graph, including lights, cameras, and empty objects. Not all Object3D instances have geometry or materials. You may be looking for the THREE.Mesh subclass which does have materials and colors.
In general, code like getObjectByName(...) and model = result.scene.children[0] is very content-specific. The file might contain many nested objects, and .children[0] just grabs the first part. It's usually best to traverse the scene graph instead, looking for the objects you want to modify (e.g. looking for all Meshes, or Meshes with a particular name).
const model = result.scene;
model.traverse((object) => {
if (object.isMesh) {
object.material.color.setHex( 0x404040 );
}
});
Then you can either add the entire group to your scene (scene.add(model)), or just add parts of it. Keep in mind that adding meshes to a new parent removes them from their previous parent, and you shouldn't do that while traversing the previous parent. Instead you can make a list of meshes, and add them in a second step:
const meshes = [];
result.scene.traverse((object) => {
if (object.isMesh) {
meshes.push(object);
}
});
for (const mesh of meshes) {
scene.add(mesh);
}
Finally, the position of an object is inherited from its parents. By removing the object from its original parents you might change its position in the scene. If you are planing to assign a new position to the object anyway, that is fine.
I would like to change the material of all the spatial meshes at runtime:
If I start the application in Room1, then walk to Room2 and change the material to "newMaterial" I can do that with the following code:
foreach (SpatialAwarenessMeshObject meshObject in observer.Meshes.Values)
{
if (meshObject?.GameObject == null)
continue;
meshObject.Renderer.sharedMaterial = newMaterial;
}
But the above code changes only the visible meshes (so the meshes in Room2). Because if I walk back to Room1 I still have the old material.
So how I can ensure that the material is changed with all the meshes, and not only the visible ones?
I'm using MRTK v2.53 and the XR SDK pipeline
Spatial observer is: WindowsMixedRealitySpatialMeshObserver
To sets the Material to be used when displaying Meshes, it is recommended to change the configuration of Spatial Awareness Mesh Observer instead of change every mesh object. Please refer to the following code:
IMixedRealityDataProviderAccess dataProviderAccess =
CoreServices.SpatialAwarenessSystem as IMixedRealityDataProviderAccess;
if (dataProviderAccess != null)
{
IReadOnlyList<IMixedRealitySpatialAwarenessMeshObserver> observers =
dataProviderAccess.GetDataProviders<IMixedRealitySpatialAwarenessMeshObserver>();
foreach (IMixedRealitySpatialAwarenessMeshObserver observer in observers)
{
// Update the visible material
observer.VisibleMaterial = myMaterial;
}
}
I'm trying to create a 'Bomber-man' like game using Phaser3 library.
For this purpose I'd like to define a collision relationship between the player and the bricks,
and more importantly - detect the collision direction relative the the player.
I've noticed body properties like touching or blocked but they are always set to false. (please see below)
//scene.js
// bricks static group
this.scene.physics.add.staticGroup({ immovable: true });
// player defined in external file (as sprite)
this.player = new Player(this, 90, 90)
// player.js
// ...
this.physics.add.collider(
this,
scene.bricks,
function(player, brick) {
if(player.body.touching.left) { //ALWAYS FALSE!!!
this.isBlockedFromLeft = true;
}, else if(player.body.touching.right) {
this.isBlockedFromRight = true; // ALWAYS FALSE!!!
}
},
null,
this
);
I'd appreciate any help. This is driving me crazy. Maybe there is a better way to do it and i'm missing something...
Thanks in advance.
So I finally figured it out.
The major issue was the way I defined the player movement. It should be
if (this.keyboard.right.isDown) {
this.body.setVelocityX(this.speed);
}
rather than
if (this.keyboard.right.isDown) {
this.x += this.speed;
}
The second way prevent collision detection and the body.touching and body.blocked properties to be updated.
Furthermore, I've found out that when it comes to top-down tiled games, it's really easier to build up the game using the tile-map feature.
official examples can be found here:
https://phaser.io/examples/v3/search?search=map
and here is a tutorial of how to make a tiled-map using a light-weight software called 'Tiled'
https://www.youtube.com/watch?v=2_x1dOvgF1E
Thank you all!
I want to be able to just place a View component (plugin) into the page through code and have it appear at some X\Y on the page... but I'm a bit stumped.
Any attempt to add via page.content kinda adds it to the layout\render pass so it occupies space.
So this would get injected into "any" page at "any" time, I have no control over the markup this would be used in (know what I mean?) There is no XML for it and unfortunately the answer can't just be wrap everything in an AbsoluteLayout because one can't mandate that on users apps\layouts.
Thoughts, even possible?
Basically the simplest way to do this is to dynamically and be fully cross platform compatible is to create a AbsoluteLayout item in your JavaScript code, and dynamically insert your item and the AL into the page container.
Code would be something like this:
var AbsoluteLayout = require('ui/layouts/absolute-layout').AbsoluteLayout;
var myAL = new AbsoluteLayout();
var myItem = new myPluginItem();
// Set you left, right, top, bottom coords.
myItem.top = x;
// Add our item to the AbsoluteItem
myAL.addChild(myItem);
var frame = require('ui/frame');
var page = frame.topmost().currentPage;
var LayoutBase = require('ui/layouts/layout-base').LayoutBase;
page._eachChildView(function(view) {
if (view instanceof LayoutBase) {
view.addChild(myAL);
return false;
}
return true;
});
However, if you don't want to do this the really simple way; the only other way is to actually go a bit lower level. You can natively access the iOS view controller (page._ios.view) and the android view (page._nativeView), and then manually add it to the view by using things like addView (https://developer.android.com/reference/android/view/ViewManager.html) or addSubview (https://developer.apple.com/library/ios/documentation/UIKit/Reference/UIView_Class/).
I would like to add you can set the Top and Left properties in TypeScript by importing AbsoluteLayout like so
import {AbsoluteLayout} from 'ui/layouts/absolute-layout';
and then using the exposed functions setLeft or setTop
AbsoluteLayout.setLeft(YourItem, LeftValue);
or
AbsoluteLayout.setTop(YourItem, TopValue);
I'm new to phaser, and for the past few days I've been trying to make a really simple game, platformer-style, where the player must navigate to certain areas before being able to exit the level.
I have the basics running, but now I can't seem to figure out how to check if the player is in those areas.
The relevant part of the code so far is as follows:
var game = new Phaser.Game(800, 600, Phaser.AUTO, "mygame", {
preload: preload,
create: create,
update: update,
render: render
});
function preload() {
game.load.tilemap("questMap", "assets/quest.json", null, Phaser.Tilemap.TILED_JSON);
game.load.image("tilesheet", "assets/tilesheet.png");
game.load.image("npc", "assets/npc.png");
game.load.spritesheet("player", "assets/player.png", 64, 64);
}
var map;
var tileset;
var groundBg;
var props;
var houses;
var houseProps;
var npc;
var ground;
var areas;
var player;
function create() {
game.physics.startSystem(Phaser.Physics.ARCADE);
game.stage.backgroundColor = "#A8DBFF";
map = game.add.tilemap("questMap");
map.addTilesetImage("tilesheet");
map.addTilesetImage("npc");
ground = map.createLayer("ground");
groundBg = map.createLayer("groundbg");
props = map.createLayer("props");
houses = map.createLayer("houses");
houseProps = map.createLayer("houseprops");
npc = map.createLayer("npc");
map.setCollisionBetween(1, 5000);
ground.resizeWorld();
Not too pretty, I know.
I've created the map with tiled and there are a lot of small props and decorative tiles, hence the multiple "map.createLayer()" calls. The only one with collision is the ground layer.
Now, on my Tiled file, I've created an Object layer and drawn small rectangles on the areas I want to check if the player is in. I thought this was going to be an easy process but I can't seem to figure out how to load those areas into Phaser, and then check if the player is within bounds.
Googling has given me some results, but none seem to fit, as they usually cover how to add a sprite to an object, which in this case does not apply.
I simply need that small area to exist and check if the player is there. I've also given names to each of those rectangles in Tiled, via the custom properties tab.
I would try using a transparent image as the area you wish to check if your sprite is over and use
if(sprite1.overlap(transparentImage)){
//do something
}