I'm looking to write an app that lets users draw a game, something like tic-tac-toe, for example. One user would begin by drawing the grid, and then each player could literally draw their own O or X. It would be a multiplayer game where each user has his/her own device.
I'm not sure what would be the best way to share this data from device to device. I've only been able to think of 2 options:
Should I attempt to upload a screenshot to the server after each player makes a move?
Should I upload the exact points where the user is drawing and then redraw these points on the other user's screen?
Any other suggestions, or maybe a point in the right direction? I'm fairly new to all of this so please don't be too harsh ;)
starting out on a multiplayer game (even if it is a straightforward one) is ambitious :) if you don't mind restricting yourself to iOS5 and above, then i would check out the new turn based multiplayer game functionality. there's a good tutorial here:
http://www.raywenderlich.com/5480/beginning-turn-based-gaming-with-ios-5-part-1
Related
I'm building an iPhone core motion game demo and would like to have a virtual "room" around the user. The user would be using the phone with the core motion to "look around" the room through the phone. Attached is an example.
I'm not looking for anything fancy. 4 solid color panels for walls and 2 panels for the floor and ceiling would do. Pretty much a large cube with the middle at the user's location
What is the quickest way for me to create a room with a box geometry, putting the user in the middle? Can this be done with UIKit objects, or do I need to use openGL to render the panels? Maybe there's some kind of a game engine that I can use for these purposes?
I would want to rotate the room in the future.
Thank you for your input!
You won't be able to create a 3 dimensional environment without using OpenGL in some form. The best way to get started is to follow a good tutorial on OpenGL such as this one. You could even take this tutorial and put the camera inside the cube and voila, instant room. You would just need to add view rotation logic from core motion and you would be set.
I'm making an app, where the sprite has to run across the screen pressing buttons and jumping and ducking. Kind of like line runner. Anyways, I'm using cocos2d. Is this what i should be using. If it is, how would i make it. Im not asking for all the code, just the basic objectives and what i should do! thanks so much!
Cocos2d is one of the best platform to make game i think what you want to do can be done by cocos2d and you need to know how to move object(sprite) across the scene and how to detect the collation.
there is lots of way to move the sprite across the screen you can also move then by the cocos2d built in methods.
search for move method which will help you.
I would definitely advise you to use Cocos2d for this purpose and also Box2d if you need real physics simulation in your game.
Regarding of writing your game have a look here : It contains very useful cocos2d tutorials and even have a tutorial of how to write a full functioning game (Look for the monkey game)
Note : It seems that the link does not work right now but I am sure it will be fixed soon..
i am working on a project that contains a 3d box that rotated by user touch and opens revelant page when clicked on a side. each side has link to another view so i need to know which side is clicked on the program.
i am using Brad Larson's wonderfull example in my app and i can rotate the cube with touch, thanx to his code and time.
( the code is linked in here: Where to start openGL ES to create and rotate a cube in an iPhone? )
now i need to know how to detect whick side is clicked on the box. normally i develop view based applications, i really have no idea on openGL or things like that.
i've searched the site but couldnt find a good answer (at least something that i can understand with my opengl knowledge)
P.S: Here, the 3dCube code from Brad Larson: http://www.sunsetlakesoftware.com/sites/default/files/CubeExample.zip
Take a look here: http://www.3dkingdoms.com/selection.html
In the OpenGL world, I think they refer to this as "picking". The utility function gluunproject will help you. Intersecting the picking ray with your model's faces should not be hard for a cube.
I'm using the accelerometer to move an object on my screen.
It's only working when the iphone is flat.
If I use the iPhone in another position, the object is not moving like I want
(the Y axis is not well managed).
So, I've to calibrate the position of the accelerometer, I guess.
But I've no idea how to do this.
Please help me.
Thanks in advance.
Regards,
ALpesH
hi hope all is well.
A simple google search came up with this beautiful post.
It is exactly what you wanted. A tutorial on Accelerometer Calibration & Optimizations.
This tutorial assumes you know the basics of the accelerometer. If not there are plenty of tutorials on google that will help get you accustomed to the accelerometer basics.
This tutorial will focus on 3 things:
Calibrating the accelerometer so the user can play your game from any
position.
Changing the "sensitivity" of your object's movement.
Adding the option to "invert" the controls.
First off, why bother adding these features? Simple. Launch your accelerometer based game and try the following tests:
Play sitting up in perfect position.
List item
Play it slouched over.
Play it lying down on your side.
Play it lying on your back with the device parallel to the floor and
the screen facing you.
Obtained from this website:
http://www.iphonedevsdk.com/forum/iphone-sdk-tutorials/39833-tutorial-accelerometer-calibration-optimizations.html
Let me know if this helps if it does choose this as the answer.
Other than that if you need any more help let me know
Ive implemented this tutorial code in my own app and i am not playing a simple ping pong game upside down and also playing it on the side whilst lying on the bed. :D
Pk
I am hoping to build an application similar to those egg shaking applications, to better understand how to detect motion on the iphone. I've been looking at accelerometer methods and motion and motion methods, but can't seem to get working what I want to do.
The specifics of my need are as follows: I want to be able to play one sound when user shakes the phone away from them, and play another sound when they shake back towards them. The motion from the user would be very similar to an egg shaker, with two different sounds able to be played depending on whether they moved the device towards or away from their chest. It would also be good to measure the intensity with which they moved away or towards.
Any ideas?
I've searched apple's sample code for a similar application, but there doesnt seem to be one.
Look at this game which is open source and makes great use of the accelerometer. It's a good one to be able to tell which direction you are going, but I haven't messed around much with intensity. I'm sure it's easy enough once you get into the details.
http://github.com/haqu/tweejump