I've got a moving sprite that animates over a loop of 4 images to make it look like it's walking in one spot. I want to make the sprite move forward by a certain amount when I click a button. I've tried looking for how this might be done, but it's just made me confused. I've found this information sheet by Flame Game that explain effects, but I don't understand how to apply it to what I've got (https://docs.flame-engine.org/1.0.0/effects.html).
This is the constructor for the class that makes the dog move:
Dog()
: super(
priority: 1,
playing: true,
scale: Vector2(1, 1),
size: Vector2.all(50),
) {
animation = SpriteAnimation.spriteList(runPictures, stepTime: 0.2);
position = Vector2(150.0, 150.0);
}
I want the dog to move 100 pixels towards the top of the screen, while it's going through the loop above, when a button is clicked. This button would send it to a class that would make it move. If someone could provide sample code or a useful tutorial, it would be very helpful.
You are on the right track, you want to add a MoveByEffect to the component.
I assume that you already have the button set up and that you have access to an instance of the Dog component from there, then you simply add the effect to the component:
final dog = Dog(...);
// Or whatever callback you have for the button
void onTap() {
dog.add(
MoveByEffect(Vector2(0, -100), EffectController(duration: 1)),
);
}
This will move the dog 100px upwards during one second.
Related
I am trying to make a game which allows moving objects by snapping them on the grid, I already figured out to snape them to grid but there is one thing little problem, I want to check if there is already a game object placed on that same grid so that I won't let the dragging game object snap to that same spot but the thing is that I have a different game object shapes.
see for yourself
Click to see the image
how can I achieve that?
Since you're on a square grid I think the best way to do this is with Physics2D.Boxcast(). Basically what you're doing is casting a box at the snap vector before moving the game object.
So in your code before you move the game object to the snap location:
RaycastHit2D hit = Physics2D.BoxCast(snapTo, boxSize, 0.0f, Vector2.zero);
if (hit == null)
{
// We're clear to move
}
else
{
// Something is in the way
}
Where snapTo is the Vector2 of the location you're going to snap to and boxSize is a Vector2 equal to the size of one grid position (you might need to play around with this a bit). The last two arguments, 0.0f refers to the angle of the box, which we don't need so just set it to zero and Vector2.zero is the direction of the cast, but we're casting in one spot so this also doesn't matter.
I'm assuming that only one game object can occupy the space at once, so there will only ever be one hit. If there's a chance for more than one you can change it to RaycastHit2D[] hits and Physics2D.BoxCastAll then check if hits.Length is greater than 0.
I had some troubles with Physics2D.Boxcast() , so instead i used Physics2D.OverlapBox() and it is working just fine.
isColl = Physics2D.OverlapBox(ObjectToMove.position, size, 0f, layerM);
if (isColl == true)
{
// Something is in the way
}
else
{
//Clear to go
}
I'm trying to create a scroll grid view in which every cell object is tapable.
When a cell object is tapped I want to scale and traslate it to the center of the screen and render it above other cells.
I was able to make it tapable and scale it in its position. Now I want to move the cell object to the center of the screen and render it above other cells.
I've tried many solutions but none of them works.
This is my hierarchy:
This is the grid in normal state:
This is the grid when a cell was tapped:
I'm populating the grid from a C# script dynamically.
void Populate()
{
GameObject cardContainerInstance, cardInstance;
foreach (var c in cardsCollection.GetAll())
{
if (c.IsOwned)
{
cardContainerInstance = Instantiate(cardContainer, transform);
cardInstance = cardContainerInstance.transform.Find("Card").gameObject;
var cardManager = cardInstance.GetComponent<CardManager>();
cardManager.card = c;
cardManager.AddListener(this);
}
else
{
Instantiate(cardSlot, transform);
}
}
}
public void OnCardClick(GameObject cardObject, Card card)
{
Debug.Log("OnCardClick " + card.name);
if (openedCard != null) {
if (openedCard.Number == card.Number)
{
CloseCard(openedCardObject);
}
else
{
CloseCard(openedCardObject);
OpenCard(cardObject, card);
}
}
else
{
OpenCard(cardObject, card);
}
}
void OpenCard(GameObject cardObject, Card card)
{
//cardObject.GetComponent<Canvas>().sortingOrder = 1;
var animator = cardObject.GetComponent<Animator>();
animator.SetTrigger("Open");
openedCard = card;
openedCardObject = cardObject;
}
void CloseCard(GameObject cardObject)
{
var animator = cardObject.GetComponent<Animator>();
animator.SetTrigger("Close");
openedCard = null;
openedCardObject = null;
}
I can't figure out how to move the cell to the center and render it above others.
Note that all is animated using an animator attached to the object itself.
Could anyone help me please? Thank you very much!
EDIT: more details
All cell object have the following hierarchy:
where:
CardContainer is an empty object added to use animator on Card child object
Card is the object itself that has a script, a canvas renderer and an animator
StatsImage is the object that slide out when the card is tapped
Image is a calssic UIImage with Image script, Shadow script and canvas renderer
Other component are simple texts.
EDIT: fix in progress
Trying to apply this suggestions I was able to manage the rendering order (as you see on the image below) but it seems that prevent touch events to be detected on the game object.
I've added a GraphicsRaycaster too and now the bottom horizontal scroll view scrolls again but only if I click and drag a card.
Moreover, with the GraphicsRaycaster, the main grid card still are not clickable and it's possible to open the card only if it is behind the bottom panel (if I click on the red spot in the image below the card behind the panel receives che click)
This is the CardContainer at runtime(note that I'm attaching new Canvas and GraphicsRaycaster on the CardContainer, which is the "root" element):
You didn't clarify whether you are using a sprite renderer or some other method but here is an answer for each.
Sprite renderer:
this the simple one. In each sprite renderer, there is a variable called "sortingOrder" in script and "Order in layer" in the inspector. sprite renderer with sorting Orders that are higher is rendered first. All you would need to do is call:
cardObject.GetComponent<SpriteRenderer>().sortingOrder = 1;
when you click the card, and
cardObject.GetComponent<SpriteRenderer>().sortingOrder = 0;
when you unclick it. I hope that makes sense!
Other Method:
this one is a bit harder and I would suggest that you switch to sprite renderers and it will be much easier and more stable down the road, but I can understand if you have already written a lot of scripts and don't want to go back and change them.
Anyway, all you will need to do Is create two layers: cardLower and cardUpper. then create a new camera and call it topCamera. now under the top camera object in the inspector, change the culling mask (it's near the top) and make sure cardUpper is selected. then change the Clear flags (first one) to "Don't Clear" finally change the depth to 0 (if that doesn't work change it to -2). Now objects in the cardUpper will always be rendered above everything else. You can change the layer through script with
cardObject.layer = "cardUpper"
or
cardObject.layer = "cardLower"
I hope that helps!
Ok, so its pretty simple. So you are going to want to add another canvas component to the game object, and check the override sorting to true. Then use
cardObject.GetComponent<Canvas>().sortingOrder = 1;
to place it in the front and
cardObject.GetComponent<Canvas>().sortingOrder = 0;
to put it in the back.
you are also going to need to put a GraphicsRaycaster on to each of the cardObjects
Ignore my other answer about sprite renderers, they are not needed here
I have made a gameobject together with some children gameobject to represent the information to show up when specific circumstances occurred.
I have already ajusted the position of the information gameobject(together with its' children) in the cameraarea. The thing is that I want to move the gameobject(together with its' children) out of the camera, maybe on top or maybe on left. Following is the scratch to demonstrate the position I want to put it:
So that I could move the information gameobject and its' children (Red box) with some movement effect when needed, I have no problem with moving it back but could find an elegant way to move it out of the camera when the game started.
Mostly because I don't know how to calculate the position out of the camera.
Maybe find the upper border of the camera and the size of the gameobject and its children?
I know I could do this by maybe add a marker gameobject to represent the downer border of the information gameobject, and move it until it's not visible, but is there a more elegant way?
Any ideas?
For this one, I would use the following trick: use any method (animation, coroutine, Update method...) to move your item out of screen the way you desire. Then you can use the OnBecameInvisible event which is called when the item does not need to be rendered on any camera anymore. The event will there be used to detect that the parent object moved out of screen, and that you want to stop the current movement. You then just need to define in this event that you want to stop the current moving behavior, and you will be done.
void OnBecameInvisible() {
// Stop moving coroutine, moving in Update or current animation.
}
There are probably more elegant ways of doing it as you said, but I think this method should be enough for what you want to achieve.
It took me time, but I found this way for you, attach this script to your gameObject:
public Renderer rend;
//drag the camera to the script in the inspector
public Camera camera1;
Vector3 bottomleft;
Vector3 topright;
void Start()
{
rend = GetComponent<Renderer>();
//the top-right point of the camera bounds
topright= camera1.ViewportToWorldPoint(new Vector3(0, 0, transform.position.z));
//the bottom-left point of the camera bounds
bottomleft = camera1.ViewportToWorldPoint(new Vector3(1, 1, transform.position.z));
StartCoroutine(MoveUp());
}
IEnumerator MoveUp()
{
//while the position and the height are lower that the Y of top right
while (transform.position.y + rend.bounds.size.y < topright.y)
{
//move the object to the new position (move it up)
transform.position = new Vector3(transform.position.x, transform.position.y + .01f, transform.position.z);
//and wait for 1/100 of a second
yield return new WaitForSecondsRealtime(.001f);
}
}
you can play with the WaitForSecondsRealtime value to change the velocity of moving.
I have just started unity. I have 4 Images(sprites) aligned in a grid.
As soon as i touch the particular chocolate, its texture changes[I wrote a code for that]. There is a button on screen.After pressing the button, I want to move only those chocolates whose texture has been changed.
I know the following move code but i don't know how to use it here.
void Update () {
float step=speed*Time.deltaTime;
transform.position=Vector3.MoveTowards(transform.position,target.position,step);
}
I just don't know to move that particular sprite whose texture is changed. Thanks
Do you want to be moving the sprites over the course of a duration or instantly?
If it's over the course of a duration I suggest you use Lerp. You can Lerp between two Vector.3's in a time scale. Much cleaner and once learned a very useful function.
Code examples below:
http://docs.unity3d.com/ScriptReference/Vector3.Lerp.html
http://www.blueraja.com/blog/404/how-to-use-unity-3ds-linear-interpolation-vector3-lerp-correctly
However if you want to move it instantly. This can be done very easily using the built in localPosition properties which you can set in or outside the object.
Set your changed sprites Bool moved property (create this) to true on click (if you're using Unity 4.6 UI canvas then look at the IClick interfaces available for registering mouse activity in canvas elements) and then when you press the button, loop through a list in a handler file which contains all your button texture objects and move those that the moved property is set to true for.
foreach(GameObject chocolate in chocolateList)
{
if (chocolate.moved == true)
{
gameObject.transform.localPosition.x = Insert your new x position.
gameObject.transform.localPosition.y = Insert your new y position.
}
}
However please do clarify your intentions so I can help further.
EDIT 1:
I highly suggest you make your sprites an object in the canvas for absolute work clarity. This makes a lot of sense as your canvas can handle these type of things much better. Use Image and assign your image the sprite object (your chocolate piece), define it's width and height and add a script to it called "ChocolatePiece", in this script create two public variables, bool moved and int ID, nothing else is required from this script. Save this new object as your new prefab.
Once you've done this in a handler script attached to an empty gameobject in your canvas make a list of gameobjects:
List<GameObject> chocolatePieces = new List<GameObject>();
You'll want to at the top of your handler script define GameObject chocolatePiece and attach in your inspector the prefab we defined earlier. Then in Start(), loop the size of how many chocolate pieces you want, for your example lets use 4. Instantiate 4 of the prefabs you defined earlier as gameobjects and for each define their properties just like this:
Example variables:
int x = -200;
int y = 200;
int amountToMoveInX = 200;
int amountToMoveInY = 100;
Example instantiation code:
GameObject newPiece = (GameObject)Instantiate(chocolatePiece);
chocolatePieces.Add(newPiece);
newPiece.GetComponent<ChocolatePiece>().ID = i;
newPiece.transform.SetParent(gameObject.transform, false);
newPiece.name = ("ChocolatePiece" + i);
newPiece.GetComponent<RectTransform>().localPosition = new Vector3(x, y, 0);
From this point add to your positions (x by amountToMoveInX and y by amountToMoveInY) for the next loop count;
(For the transform.position, each count of your loop add an amount on to a default x and default y value (the position of your first piece most likely))
Now because you have all your gameobjects in a list with their properties properly set you can then access these gameobjects through your handler script.
In my game, my player (a ball) doesn't move in the x-axis. The ball just can jump (y-axis).
The level is always translating in the x-axis and give to the player the sensation the ball is moving.
My question is : Is it possible to add a trail renderer (or something like this) to my ball ? To enforce the sensation of moving of the ball ?
As the image .. :
(source: barouch.fr)
Thank you!
Yes you can, and I've proven that it is possible.
As you can see in the image, I nested 5 spheres recursively, each with Z + 1 of its parent.
You're going to need rigidbody for each of them because we're going to AddForce to them.
And here's the important part, the scripts.
I have 3 scripts, named HeadScript, BodyScript, TailScript (kinda like a snake game, so I name them like that)
HeadScript:
void Update () {
if(Input.GetKeyDown(KeyCode.Space)){
rigidbody.AddForce(new Vector3(0, 6, 0), ForceMode.Impulse);
GameObject child = transform.FindChild("Sphere").gameObject;
BodyScript childScript = child.GetComponent<BodyScript>();
childScript.ChildJump();
}
}
HeadScript is only attached to the head (the rightmost sphere), it needs to detect keydown (for jumping), then we add force to itself (only upwards) so it looks like it's jumping. Afterwards, get the child object, (the ball on its left) and call the function ChildJump which is inside BodyScript.
BodyScript:
public void ChildJump(){
Invoke ("Jump", 0.1f);
}
void Jump(){
rigidbody.AddForce(new Vector3(0, 6, 0), ForceMode.Impulse);
GameObject child = transform.FindChild("Sphere").gameObject;
if(child.GetComponent<BodyScript>() == null){
TailScript childScript = child.GetComponent<TailScript>();
childScript.ChildJump();
}
else {
BodyScript childScript = child.GetComponent<BodyScript>();
childScript.ChildJump();
}
}
BodyScript is attached to every sphere except the first and the last. Parent objects call the function ChildJump which contains only 1 function, Invoke.
Invoke is used to call a function after a certain amount of delay. In this code the delay is 0.1s.
The Jump itself will call its child's (the ball on its left) ChildJump function. Now you see why it is kind of recursive.
We added the if condition so we won't get any errors when we get BodyScript component from the last sphere, which isn't there. The last script has only TailScript.
TailScript:
public void ChildJump(){
Invoke ("Jump", 0.1f);
}
void Jump(){
rigidbody.AddForce(new Vector3(0, 6, 0), ForceMode.Impulse);
}
The final script, TailScript only contains AddForce to itself, because it has no child.
Every sphere (except the head) will jump after 0.1s delay from its parent, becoming what you call it, trail renderer.
Now what's left is just to add alpha material for each of them so they become more transparent, and voila! Job's done!