I searched this on the internet but I still haven't found the answer I wanted.
So, I have a 2d tiled game and each tiles position is a multiple of 1.25 for example 7.5, 3.75. There is going to be a player walking on top it and i want to control the player by dragging it and if you release the touch it would be perfectly on a tile instead of in between the tiles. Right now, I can't even figure out how to drag the gameObject with touch. Can anyone help me and explain to me how to do that?
You need to have a collider on every object you plan to move. Then create a class whose sole purpose is to fire a Raycast. Detect when a touch happens. Then fire the Raycast.
RaycastHit hit;
if(Physics.Raycast(ray, out hit, 100))
Debug.DrawLine(ray.origin, hit.point);
You will notice that you have what you hit; with that you can send a message to that particular object.
hit.collider.SendMessage("move");
Inside the object that you hit, you now have to use the coordinates of the touch position to update the transform.position.
Related
I am making a Sprite Kit game where the player (basically a stickman) has a running animation and a parallax scrolling background.
Now I have enemies that come near my player. To destroy these enemies sometimes I have to touch the enemies node to launch a rocket or attack them with an attack button or just jump over them.
Everything is working fine, but I want to add some extra moves to destroy them. I want some enemies that you can just destroy if you have drawn a whole circle around them. So imagine they come and you make a circle and then my player launch a laser or something. The problem is I have no idea where to start.
I haven't found anything on the internet. If it's too complicated or almost impossible how about touching my player node and dragging to the enemy?
EDIT: I think I have to create a custom GestureRecognizer that recognizes if a circle is drawn around a sprite and then runs the code. I don't know how this works ?
Yes, it's too complex. Not just from a coding point of view, but also from that of the player's experience.
Anything that requires complex gestures over a large amount of glass is annoying for the player because they're never going to have the same experience. Their finger's moisture and oil content always changes, as does the ambient temperature and cleanliness of their screen.
So big gestures required to be performed quickly (a gaming input like this) will sometimes be fun and smooth, and other times degrade as an experience based on the nature of the above properties.
Best to avoid them for a game's best possible experience.
If you must do it, there's two ways to research how.
Seek out "custom gesture" creation and utilisation through documentation and google, etc.
Think about using some kind of array to store all the points where the player's finger moves through during that circle gesture and attempt to discern if an enemy is within that space and then act accordingly.
--- probably other ways, too. But these jump to mind.
If I have a sprite node, just a white circle somewhere on the screen, how am I able to make it so when I drag, let's say downwards and slightly to the left, the circle sprite would launch upwards and to the right and then gradually come down, like a golf shot.
Another way of explaining the mechanic is the Angry Birds game, where you launch the birds of the slingshot, the birds move in the opposite direction of your drag and gradually come down.
For another live example of the mechanics of the circle, look at the app, Desert Golfing.
Thanks, and if you don't know what I mean just comment and I'll try to explain it better.
OPTIONAL: If you do know how to do the slingshot type mechanic for the circle, do you also know how to add an arrow to the screen so users know which way the circle will launch?
Ill try to break your problem down into small steps that you could then solve yourself:
Detect the swipe:
use a UIPanGestureRecognizer. You will be able to implement a method that is called whenever a user drags their finger in a certain direction.
Here are some good references:
- Pan Gesture Official Documentation
- A very useful question that can serve you as a guide
Detect the magnitude of the swipe in order to impart an impulse
Check out the second link above. What you have to do is in the method for the gesture recognizer you will detect certain flags such as when the user starts the pan or ends the pan. Then, you can check for the location at those moments. With the Pythagorean theorem you should be able to get the distance and use that as the magnitude.
Apply impulse:
Create a physics body for your sprite and then make sure that you have gravity set inside your physics world. This allows the sprite to move in a parabolic motion. Then, use applyImpulse: on your physics body with your magnitude.
Regarding the arrow, you can easily do some delegation from within your pan gesture handler that gets the magnitude of the swipe and projects a reflection that your arrow will then show. Your question is pretty loaded so going into more detail is impossible, but best of luck. Hope this helps!
I have a game with a character that can cast fire balls. Right now in my game, when I tap anywhere on the screen, I shoot a fireball at my touch point. For this fireball I'm using an SKEmitterNode where I've created a fireball particle emitter.
The problem I'm running into is, my fireball has an angle set already, but I want that angle to change based on where I tap, so that the trailing flames are behind the fireball, not going up or down or whatever I've set it to in the sks file.
I've never done something like this, is there something built into swift already for calculating angles? I can't find much on google
There are two options:
1) first one is that you can use :
fireBall.moveTo(touchLocation.x, touchLocation.y)
function so you can avoid use angles (if I understand you correctly). touchLocation is CGPoint of location of the touch event.
2) second one use as it was said before you will get an angle:
atan2(deltaY,deltaX)
I'm bulding a simple application using SpriteKit for iOS 7 / 8 but I'm having some issues with my sprites when I try to touch and launch some events from one of two nodes that are too close to each other.
When I try to touch one of them, I end up touching the upper layer one square mask, and if I change the [self addChaild:] order it happens the same but with the other one.
I want to know if I can create a more precisse mask for my nodes so this won happen when I try to touch them. I know I can create a physics world and a physics body for each of them to control Collision Detection but I don't know if this is the right approach.
BTW... I'm using the methods touchesBegan:withEvent: and touchesEnded:withEvent: for touching events detection.
PD: if you need any more info about my implementation please let me know.
I have a SpriteKit Scene in which I want to have the effect as if a camera zoom and scale. Does anyone know of any libraries or some easy methods of doing this?
It was very easy to do in other 2D engines but does not seem simple.
I was thinking of doing it from the app delegate, and using the window to zoom since my character does stay around the same position.
The desired effect I would like to accomplish is like that of the start of an Angry Bird level when the camera pans into the level and then the launch doc.
http://www.youtube.com/watch?v=_iQbZ3KNGWQ This is an example of the camera zoom and pans I am talking about.
Thanks for the help.
If you add an SKNode to the SKScene, and make your scene content children of that node instead of direct children of the scene, then you can zoom and pan all of the contained content just by adjusting the xScale, yScale and position properties of the added node. (Any content you did not want scrolled e.g. scores or whatever could then be added to a different SKNode or added directly to the scene).
The adjustment could be done by overriding one of update:, didEvaluateActions, or didSimulatePhysics in your SKScene subclass. The choice would depend on if you are just moving your character around by yourself in update:, or if it also gets moved around by running SKActions or by simulated physics.