As part of work I was told to build a small game in phaser where I have to drag and drop some objects using mouse over some static objects in the scene and make out if the drop was done on the matching static object. The static and the not static objects all have non-rectangular boundaries, so I used Physics editor to draw their boundaries and import them into Phaser. To detect collisions while dragging the object I am using matter callbacks for 'collisionstart' and 'collisionend'. Say for example I am trying to drag an apple onto a tree, as soon as the the apple body collides with the tree outline, 'collisionstart' triggers, but as I move the apple inside the tree boundary 'collisionstart' and 'collisionend' trigger multiple times. So this seems to be an unreliable way to detect overlap between two objects.
Collision code:
var canDrag = this.matter.world.nextGroup();
currentObject = this.matter.add.image(360, 360, 'Carrot', 0, { chamfer: 16 }).setCollisionGroup(canDrag);
currentObject.body.label = 'Carrot';
this.matter.add.mouseSpring({ collisionFilter: { group: canDrag } });
this.matter.world.on('collisionstart', function (event, bodyA, bodyB)
{
if ((bodyA.parent.label == 'Tree') || (bodyB.parent.label == 'Tree')) {
tree.tint = tintColor;
}
});
this.matter.world.on('collisionend', function (event, bodyA, bodyB)
{
if ((bodyA.parent.label == 'Tree') || (bodyB.parent.label == 'Tree')) {
tree.tint = normalColor;
}
});
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.
Can you please show me how the dom can communicate mouse pointer movement events as an input to a phaser scene. I've seen how mouse movement can be tracked within the scene area; but once the mouse leaves and goes to other areas of the DOM, that data is not tracked. I figure if perhaps there was a way to have an input to communicate data from "the outside world" then this could be possible. I am very grateful for help and direction you could share.
All you need to do is add an event listener to the DOM object you also want to track movement in using plain JavaScript. Then, you tie the event listener to the game method you want to execute when the event is triggered.
const body = document.querySelector('body');
body.onmousemove = (pointer) => {
updatePoint(pointer);
};
And then setup your game as normal:
const config = {
type: Phaser.CANVAS,
height: 400,
width: 400,
parent: 'gameContainer',
scene: {
create: create
}
};
const game = new Phaser.Game(config);
let dataText;
function create() {
this.input.on('pointermove', (pointer) => {
updatePoint(pointer);
});
dataText = this.add.text (10, 10, 'x, y');
}
function updatePoint(pointer) {
dataText.text = 'x: ' + pointer.offsetX + ', y: ' + pointer.offsetY;
}
You may have to refactor your code a little bit to get this to work, because the event listener on your DOM element needs to be able to access the game methods. I created a quick codepen showing the setup that worked for me.
I used latest version cocos2d-js to create my game. On the game screen, I added multiple sprites overlay in a row, like this
Overlay sprites
I added an event listener to move up a sprite on y-axis when it was clicked. However, when I clicked on the point that any two sprites contain, the two sprites moved up together.
This is my event listener code
var listener = cc.EventListener.create({
event: cc.EventListener.TOUCH_ONE_BY_ONE,
swallowTouches: true,
onTouchBegan: function (touch, event) {
var target = event.getCurrentTarget();
var location = target.convertToNodeSpace(touch.getLocation());
var targetSize = target.getContentSize();
var targetRectangle = cc.rect(0, 0, targetSize.width, targetSize.height);
if (cc.rectContainsPoint(targetRectangle, location)){
target.setPositionY(50);
}
}
});
How can I prevent to move them up together and move only one sprite?
Thanks.
onTouchBegan must returns boolean value as result, if returns true it's means touch was handled and event cycle will be stopped. Try to return true, if rect contains point.
Hope this helps. And sorry for my English.
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
}
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
}
}
}