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37 | Need ideas on how to give my levels structure I am making an iOS game for a project at school. It is going to be a tiny bit like Fruit Ninja, as in it will have different things on the screen, and when you hit them, they die, and you get points. The trouble is that unlike Fruit Ninja, my game will have different types of sprites, all doing different things (moving different places, doing different things, etc). The one thing that is bad about having all of these sprites that do different things is that it is hard for them to look neat on the screen all together. I was planning on having a couple of different gamemodes Time Trial You have 120 seconds to kill as many sprites as possible. Survival You have three lives, every time you try to hit a sprite and miss, you lose a life. ???? Whatever I think of. I am a rookie to game design in general, and I don't know the best way to make my game look good, and play well. I could have all of these sprites on the screen at the same time, or I could have them come in waves, for example 10 of sprite a come on, and once they are killed, 10 of sprite b come on, etc... Please give me your opinion about which one I should code. If you have any other suggestions for either a third gamemode, or a completely different way to make the levels, feel free to tell me. |
37 | How can I make a rectangle to an irregular shape? I used masking for breaking an image into the below pattern. Now that it's broken into different pieces I need to make a rectangle of each piece. I need to drag the broken pieces and adjust to the correct position so I can reconstruct the image. To drag and put at the right position I need to make the pieces rectangles but I am not getting the idea of how to make rectangles out of these irregular shapes. How can I make rectangles for manipulating these pieces? This is a follow up to my previous question. |
37 | RTS game engine for iOS iPhone Anyone know any free or non free RTS engine that can be used for iOS game development? |
37 | How do you handle iPhone graphics for both high and low DPI settings? How do you guys create your game graphics for iPhone? Considering you need a retina version and a nomal one? Do you create a big version of your image, save HD, then resize to smaller version, and save Normal? Or do you create a vector image with say, fireworks, save HD, then resize, then save Normal? |
37 | Help implementing virtual d pad Short Version I am trying to move a player around on a tilemap, keeping it centered on its tile, while smoothly controlling it with SneakyInput virtual Joystick. My movement is jumpy and hard to control. What's a good way to implement this? Long Version I'm trying to get a tilemap based RPG "layer" working on top of cocos2d iphone. I'm using SneakyInput as the input right now, but I've run into a bit of a snag. Initially, I followed Steffen Itterheim's book and Ray Wenderlich's tutorial, and I got jumpy movement working. My player now moves from tile to tile, without any animation whatsoever. So, I took it a step further. I changed my player.position to a CCMoveTo action. Combined with CCfollow, my player moves pretty smoothly. Here's the problem, though Between each CCMoveTo, the movement stops, so there's a bit of a jumpiness introduced between movements. To deal with that, I changed my CCmoveTo into a CCMoveBy, and instead of running it once, I decided to have it CCRepeatForever. My plan was to stop the repeating action whenever the player changed directions or released the d pad. However, when the movement stops, the player is not necessarily centered along the tiles, as it should be. To correctly position the player, I use a CCMoveTo and get the closest position that would put the player back into the proper position. This reintroduces an earlier problem of jumpiness between actions. What is the correct way to implement a smooth joystick while smoothly animating the player and keeping it on the "grid" of tiles? Edit It turns out that this was caused by a "Bug Fix" in the cocos2d engine. |
37 | iPhone OpenGL ES partially texture mapping an object I only have a basic understanding of OpenGL, so I'm probably showing my ignorance here. I'm looking for a great iPhone OpenGL ES example of applying a texture (preferably from a texture atlas, but not really a requirement) to specific parts of some arbitrary object model. I have a game where 3D tiles "flip" to reveal some other texture on the backside of the tile. I created the model in Blender and exported it to an Objective C header. The tile isn't a simple "cube", but it is relatively cube shaped. Everything works great when I use a single texture that simply wraps the entire model. But I'm struggling to figure out how I can restrict that texture to just specific parts of the model. To complicate things even more, I ultimately want to texture it with three different images. The top will have "image x", the sides of the tile will have "image y", and the back will have "image z". Thanks! |
37 | Ipad actionsheet not showing all buttons in landscape mode when keyboard is present I am developing an Ipad application. It supports both landscape and portrait mode. The app has keyboard.It also shows an action sheet with 4 buttons when required. In portrait mode it works perfectly. But in landscape mode action sheet only show 2 buttons when keyboard is there .Without keyboard it show all 4 buttons. Any solution? |
37 | Why are the app analytics for iTunes Connect so wrong? I've developed a mobile game and have it listed both at Google Play and the Apple App Store. The install stats from Google Play are very close to my own stats, but the stats iTunes Connect shows are WAY off it shows nearly 1,000 "app units" (which I assume means installs) when there's only about 120. Most of their "installs" come from China. I'm trying to figure out 1) why iTunes Connect is counting all of these bogus "installs" and 2) what possible benefit someone could have from performing all of these fake installs. Thanks in advance for your insight. |
37 | How to balance audio levels to be loud enough yet safe There are a few sound effects in my game that sound a bit piercing over earbuds but OK when played through the iPhone speaker. Also sound levels seem lower on older hardware. Is there some objective way to be sure my sounds are loud enough yet safe? Notes I made my music with GarageBand for iPad. The output was very hot but not clipped. To preview the sounds on my computer I played them in the iPad simulator and matched the volume coming out of my iPhone. To resolve my volume issues, I reduced the high end in Amadeus Pro using the EQ tool. A couple passes for each of the worst sound clips let me reduce the shrillness without muting the volume too badly. Thanks everyone for your help. |
37 | What are the restrictions of 3g online games I am looking into make a 3g online multiplayer game for the iphone. Multiplayer is my main focus but I have noticed all game apps require wi fi. Dose anyone know if this is simply an issue with the speed of the 3g network or dose apple put restrictions on their 3g network that prevents developers from doing this? |
37 | shake Vibrate a body in box2d? How do you vibrate or cause a shake effect to a body of type static or dynamic or kinematic. I tried applying forces to a dynamic body in the timeStep, which did not work, as well I tried ApplyLinearImpulse many times a sec within the timeStep, which again did not give me the result. So right now Iam experimenting with adding a static circle body as a hinge point to my rectangular body and create a revolute joint between them. May be then applying a force could result in Tension between the 2 bodies? Does anybody know about this? have any ideas please let me know? |
37 | How to create art assets for a 3d avatar editor I am currently prototyping an idea for an iPhone game. I'd like to create an avatar editor inside the game so that the player can create a 3d avatar face and modify certain features (using slider controls), such as nose shape, eye color, mouth size, etc. This has been done in several games, but what I'm looking to do would be fairly cartoon ish caricature ish, similar to the Mii editor on the Nintendo Wii (http www.myavatareditor.com ). I'd also like the final result to have the ability to use some canned animations, such as simple speech animations, smiling, frowning, etc. I am not an artist, so I would be unable to create these assets, but what kind of effort is required for an artist to create the 3d models necessary for this type of game? Also what mechanism would be required to tweak the face's characteristics? Would you use bones or morph targets? How would the final result be animated? Would facial animation use bones or morph targets? I've seen several tools that do this sort of thing too, such as FacialStudio. Are there any facial generation tools out there you'd recommend for generating some base content for this game, or should I just hire an artist to do this type of work. Thanks! |
37 | How to protect Lua scripts in IOS game? I'm developing an iOS game and was considering putting level info and monster info in a Lua script for ease of use. However, since I'm using Game Center for multiplayer I'm concerned users will attempt to change these scripts to cheat. What measures can I take to protect my Lua scripts? |
37 | cocos3d versus Unity for simple IOS 3D games? Wondering if anyone here happens to have experience in doing some simple 3D based games apps for IOS, using cocos3d amp Unity and could give some pointers....questions I have are GENERAL 1) It seems currently cocos3d has the most traction in terms of a free 3D games engine for IOS development? 2) If one wanted to step up from the free IOS games engine, to a commercial one it would seem Unity is a popular choice, however you would then not really be doing apple objective c development, but rather unity development and pushing a button to pop out an IOS deployable artifact correct? FOR MY SPECIFIC REQUIREMENT If I was interested in doing the following develop a relatively simple 3D application for iPhone iPad have a small 'world' such as a room with a few basic items in it (table, cupboard) ability to 'drop' a basket ball in the room and have it bounce around based on a physics engine amp perhaps some user input (not sure what, lets say control wind direction) monitor it and react accordingly e.g. say if it goes into a net which is in the room then add a point to the scoreboard At a high level how would one do this using Unity versus using cocos3d, for example 3) Which would be quicker to develop such a basic iPhone iPad game simulation out of Unity cocos3d? 4) Would 'building your world room' approach be different? Like in Unity would you build tables cupboards within a Unity IDE which would make it very quick, whereas with cocos3d would you have to do this programmatically? 5) Would the programming aspect of letting the ball go and monitoring it be different between the two? Or would you roughly in both cases just be setting up world, release ball in certain position, and then engaging physics engine? 6) Any advice guidance re which tool approach to use? (Unity versus cocos3d) 7) Re using cocos3d for my requirement, what additional tools would you recommend above beyond XCode? (e.g. just perhaps some sort of 3D design tool to help model the room and import save somehow for us in cocos3d) Basically I'm a hobbyist iOS developer who wants to do some 3d, so the concept of using a free open source approach such as cocos3d sounds great as (a) it's free, (b) keep using existing skill set re objective c etc, BUT the biggest unknown to me is whether by chosing cocos3d would I be giving myself say 20 hours of work to develop a 3d app animation that could be developed in 1 hour in one of these commercial product (e.g. Unity)? |
37 | Set texture of a LHSprite that is loaded from LevelHelper How do i set the image texture of an LHSprite that is loaded into xCode using levelHelper amp spriteHelper? I am using sprite sheets. So i tried to load the image the old fashioned way using CCSpriteFrameCache, but unfortunately it isnt recognizing the .pshs file ( Any Help would be great! |
37 | Which iPhone iPod Hardware to Support for iPhone Game I'm coming from a background of Android. I would like to figure out what kind of iBlah device hardware I need to support for iPhone game development something like Android's OS distribution stats, but for iBlah hardware. From my research, it seems that I need to support both iPod and iPhone. But which versions of hardware? is 3G still used? What about 3GS? For example, the S phones seem to have dual core instead of single core CPUs. I also worry about performance. In Android, I had a severely low end phone, which meant pretty much anything that ran okay there ran okay on other phones. For iPhone, how do I figure out what to support in terms of performance? |
37 | Game Development Resources? I want to make an iPhone game and I was wondering if somebody could point me to some resources. Before you rage and close this, I am not looking for just a tutorial on programming, I could just google that. I need to find a tutorial on how to actually make a game, as in how to organize your code, what type of methods to run in separate threads, how to manage these threads in a game, etc. I already know everything I need I can write a physics engine from scratch, I can write a 3D graphics pipeline from scratch, and so on. What I cannot figure out is how to combine all of this knowledge into correctly and efficiently making a game. Obviously for this one would probably go to college, but seeing as I am still in high school, that is not an option. If anyone would know some tutorials or resources, any pointers would be appreciated. |
37 | How can I implement temporary effects in Objective C? How could I use this IBAction (IBAction)shield (id)sender appDelegate.healthInt 150 and simply make it work for a limited time. I want to set appDelegate.healthint 150 for about 20 seconds. I'd assume this works with some sort of NSTimer. Not really sure. I'm not using any frameworks. |
37 | Changing location after CommitAnimations I'm using the following code to move a UIImageView shootImg.image UIImage imageNamed "Projectile Left 1.png" UIView beginAnimations nil context nil shootImg.center CGPointMake(shootImg.center.x 1000, shootImg.center.y) UIView commitAnimations This works but what I want to do is after UIView CommitAnimations I want to set the location of shootImg using CGPointMake. If I just put it after commitAnimations then the animation doesn't fully complete. Any suggestions? I'm not using any frameworks like cocos2d and if you need to see any more code just ask. |
37 | Updating games for iOS 6 and new iPhone iPod Touch Say I have a game that runs full screen on iPhone 4S and older devices. The balance of the game is just right for the 480 x 320 screen and associated aspect ratio. Now I want to update my game to run full screen on the new iPhone iPod Touch where the aspect ratio of the screen is different. It seems like this can be challenging for some games in terms of maintaining the "balance". For example if the extra screen space was just tacked onto the right side of Jet Pack Joyride the balance would be thrown off since the user now has more time to see and react to obstacles. Also it could be challenging in terms of code maintenance. Perhaps Jet Pack Joyride would slightly increase the speed of approaching obstacles when the game is played on newer devices. However this quickly becomes messy when extra conditional statements are added all over the code. One solution is to have some parameters that are set in once place at start up depending on the device type. What are some strategies for updating iOS games to run on the new iPhone and iPod Touch? Edit more info I wonder what happens with a game like Plants vs Zombies? There's quite a bit of artwork that's probably sized to the 320x480 screen. Perhaps the lawn background's width can be increased while the size of the zombies and the row heights stay the same. |
37 | Is it true that to test a game on the iPhone or iPad, we either need to pay 99 to join Apple Developer program, or jailbreak the iPad? To test a program for iPhone or iPad, seems like the only way is to join the Apple Developer program and pay 99 per year? Can you also jailbreak the iPhone or iPad and be able to test it? |
37 | What platform is best for Android and iPhone development? I've been developing non mobile apps for linux mainly stuff like interpreters, compilers, database engines and business apps. I've been told that if I wanted to learn how to develop iPhone iPad applications, I should buy a Mac since Apple has all it's development tools for iPhone iPad on Mac. Now, what about Android phones tablets? Are the development tools better on Mac or PC? I need to buy a new laptop, and I would like to factor in mobile development in my choice of PC or Mac. |
37 | Constant rotation of a revolute joint in box2d I would like to have a line with one end attached to a location and have it rotate constantly (with the same speed) with a maximum of 45 to 45 degrees (i.e. I would like to have it swing like a rope back and forth 90 degrees). Is this possible or should I use non box2d objects to do this (cheat box2d engine)? |
37 | Constant rotation of a revolute joint in box2d I would like to have a line with one end attached to a location and have it rotate constantly (with the same speed) with a maximum of 45 to 45 degrees (i.e. I would like to have it swing like a rope back and forth 90 degrees). Is this possible or should I use non box2d objects to do this (cheat box2d engine)? |
37 | How make a laser path prediction line like a slingshot cowboy game? How so I make a laser path prediction line like a slingshot cowboy game in cocos2d or box2d and select the target like "slingshot cowboy" game. |
37 | what are the networking features available in iphone? So far I couldn't find anything on google so I'm asking here I need to connect two iphones or more to each other for a multiplayer game, what features does iphone api provide? is there some kind of bluetooth device or equivalent in iphone or should i just search over the wireless network connection? and what api should I use to connect them? is it possible to use c or are the api functions only available via obj c iphone sdk? |
37 | Getting started with Box2D for iOS I just want to run any Box2D "Hello World" or test apps. I've downloaded the source twice (zip file the first time and via svn the second time), followed the build instructions (do stuff w cmake, "make", "make install" etc) and don't know where to go from there. How do I run the test apps or Hello World apps that come w Box2D on my iPhone (or simulator)? |
37 | How do I consolidate the differences between iOS and Android update loops? I'm currently working on moving some Android ndk code to the iPhone. From looking at some samples it seems that the main loop is handled for you and all you've got to do is override the render method on the view to handle the rendering. Then add a selector to handle the update methods. The render method itself looks like it's attached to the windows refresh. But in android I've got my own game loop that controls the rendering and updates using C time.h. Is it possible to implement the same here bypassing Apple's loop? I'd really like the keep the structures of the code similar. |
37 | How to load a text file from a server into iPhone game with AS3 in Adobe AIR? Im creating an iPhone game with Adobe AIR, and I want to be able to load a simple text msg into an dynamic text box on the games front screen from my server (and then be able to update that text file on the server, so it updates automatically in the game after the game is on the app store) How would I go about acheiving that? is it as simple as using a getURL? are there any specifical issues with trying to do this on the iPhone via AIR that I should be aware of? Thanks for any advice. |
37 | As an Android dev, what should I keep in mind for porting to iPhone? As an Android game developer, what should I keep in mind while developing my game if I ever wanted to cross platform the game to the iPhone? Any strategies, tips, etc. on porting to both of these mobile platforms? |
37 | semi 3d walls, should I use sprite sheet or render them 3d? I'm going to develop a game and this is just a prototype of it's graphics. Knowing that my primary target platform is iPhone, I'm wondering if it's better to create a spritesheet containing all possible angles from a wall or is it better to render them with 3d boxes? here is sample spritesheet I was going to use |
37 | Has anyone used PhoneGap to make 2D games for the iPhone? I love simple casual games. I've been riding the bus a lot recently and so simple, no brainer games are great fun and well worth the small price I pay on the App Store. It got me thinking... I know HTML5, CSS3 and JS very well. I looked into PhoneGap and it looks like it's something I could use for making apps for the iPhone. The games I've been fleshing out myself are very simple 2D affairs. Fun, simple and high quality. That's what I'm after with my games... I also make music and my friend is an digital illustrator so together we have all the media covered. Does any one make 2D games for the iPhone using PhoneGap? I'm presuming that because I want to code in JS and use the HTML5 Canvas tag, that PhoneGap does nothing more than provide me a wrapper with a WebKit view? I know it won't be as fast as using native... But is using PhoneGap a viable option? |
37 | Make a layer over an image and adjust its co ordinates by touch I need to make a layer over an image and adjust the layer to fit to image and get its co ordinates of the layer. I need to adjust the layer by touch and pinch. The sample image is as below. I need to do this in ios, and can I get any ideas to do this? |
37 | Creating an alphabet with numbers in 3d using opengl es How should I create an alphabet with numbers in 3d in opengl es? I'm trying to create them with the existing primitives, but it's not looking good. Do we have any alternate way to get these things done? If so, please let me know! Thanks in advance. |
37 | Recommended hardware for developing ios games? I know you have to have mac os x to use xcode and thus to develop compile apps for the iphone. And I'm not exactly wanting to go the hackintosh way, so I'm looking at buying a used mac. What specs are recommended. If I buy a cheap mac mini that has only 1gb of ram would that be enough? (I'm not talking about using that to create the graphics audio, I'll use my normal windows ubuntu pc for that). I'm just talking about being able to use xcode and write applications. I'm trying to spend the least amount I can without running into problems developing the app. |
37 | Getting started with Box2D for iOS I just want to run any Box2D "Hello World" or test apps. I've downloaded the source twice (zip file the first time and via svn the second time), followed the build instructions (do stuff w cmake, "make", "make install" etc) and don't know where to go from there. How do I run the test apps or Hello World apps that come w Box2D on my iPhone (or simulator)? |
37 | 0.99 or Free with Virtual goods Revenue Model for mobile games I'm trying to decide between a paid game and a free to play game. Is there research on the pros and cons of each one. I would really appreciate some concrete data on this and not just opinions. This is for mobile (currently iOS with Android later) game. |
37 | shake Vibrate a body in box2d? How do you vibrate or cause a shake effect to a body of type static or dynamic or kinematic. I tried applying forces to a dynamic body in the timeStep, which did not work, as well I tried ApplyLinearImpulse many times a sec within the timeStep, which again did not give me the result. So right now Iam experimenting with adding a static circle body as a hinge point to my rectangular body and create a revolute joint between them. May be then applying a force could result in Tension between the 2 bodies? Does anybody know about this? have any ideas please let me know? |
37 | Cocos2d Using single timer scheduler for multiple sprites want to know if is it possible to use single timer or scheduler method for multiple sprites ? Like I am now working on a game and there could be any number of sprites and i want to perform some actions on all of that sprites, So do I have to use as many timers or schedulers as sprites ? Or How can the job be done using only a single timer or scheduler ? What is I schedule a method and use it for, Say 10 sprites ? Will it affect the performance..? |
37 | Make a layer over an image and adjust its co ordinates by touch I need to make a layer over an image and adjust the layer to fit to image and get its co ordinates of the layer. I need to adjust the layer by touch and pinch. The sample image is as below. I need to do this in ios, and can I get any ideas to do this? |
37 | Can I do iPhone game dev on iPod touch? I do not want a mobile phone, but are there any issues I'd run into by developing games on an iPod for iPhone? |
37 | shake Vibrate a body in box2d? How do you vibrate or cause a shake effect to a body of type static or dynamic or kinematic. I tried applying forces to a dynamic body in the timeStep, which did not work, as well I tried ApplyLinearImpulse many times a sec within the timeStep, which again did not give me the result. So right now Iam experimenting with adding a static circle body as a hinge point to my rectangular body and create a revolute joint between them. May be then applying a force could result in Tension between the 2 bodies? Does anybody know about this? have any ideas please let me know? |
37 | 8 bit Game To pre scale images, or post scale my Cocos2d scene. Which is the better approach? I'm wanting to develop a game with an 8 bit feel. Since this game is mostly for my personal enjoyment, I've set a requirement that I want my game to have an 8 Bit feel to it that is most similar the 8 Bit systems of yore, on a lovely CRT TV. This is also my first Cocos2d project so I don't know which approach is better. I'd like the general advice of the community on how to render my game. I've come up with two possible approaches. Please advice which is better. Approach 1 Create images for backgrounds and sprites using the "8 bit" resolution of my game. After I'm done making an image, I scale it up and I save two variants the standard sized one and the " 2x" variant. When I render the game, everything looks very 8 Bit but I will still need to apply mathematics to every animation so that my virtual pixels always shift by 4 or 8 pixels (for retina displays) on the screen when they move. This approach doesn't sound difficult but it seems like it could become a bit annoying and tedious. Approach 2 Generate all content in my image designer at the exact resolution of my virtual screen. When I generate my scenes in Cocos2d, I generate them all with the "virtual resolution". When the scene is displayed on the iOS screen, I scale the entire scene up to the resolution of the device. I think this could be the simplest approach since all of my sprite and background movement mathematics can just behave as normal. However, I'm not sure that this approach is even possible. Furthermore, I know that within iOS, graphic scaling has an anti alias affect that gets applied to graphical objects as they scale up. Obviously, I'd want to cut this affect off and just use a "nearest neighbor" algorithm to scale up my scene. If I can't cut off the scaling anti aliasing, I don't want to use this method. However, if I can setup such a rendering system, I think this approach would be best. So, my question is simple. Can I use approach 2 and, if so, which approach is really easier to work with in Cocos2d and iOS? |
37 | iPhone point and click adventure game port structure I am porting an AGS game to iPhone, and was wondering what the best approach to the port would be? How best would you structure your code and assets? More specifically, how would you deal with say 100 scenes. My initial approach is to create a scene superclass with things common between all scenes, like backgrounds, music, doors, windows, characters. Then for each scene an inherited version of that superclass with more particular things like checks, dependencies etc. Upon entering the scene, you'd check for dependencies and go from there. This is all off the top of my head mind you, so probably forgetting quite a bit. |
37 | How can I make iPhone apps (games) on Windows? I want to start making iPhone games, but sadly I'm a Windows geek.. Is there a way to make good profesional iPhone games without Xcode owning a Mac computer? If not, what do you recommend, a Mac Mini? Thanks in advance! |
37 | Accelerometer to move player left and right Please take a look on my code and help me to find problem. I used this tutorial COCOS2D ACCELEROMETER MOVEMENT This works only sometime .some time not move..How can I resolve this problem? Here is my sample DOWNLOAD Thanks for reading this what's wrong with my code ? Is there any other way? Here is my code define kHeroMovementAction 1 define kPlayerSpeed 500 (void) accelerometer (UIAccelerometer )accelerometer didAccelerate (UIAcceleration )acceleration use the running scene to grab the appropriate game layer by it's tag grab the player sprite from that layer using it's tag CCSprite playerSprite mPlayer float destX, destY BOOL shouldMove NO float currentX playerSprite.position.x float currentY playerSprite.position.y if(acceleration.x gt 0.25) tilting the device upwards destX currentX (acceleration.y kPlayerSpeed) destY currentY (acceleration.x kPlayerSpeed) shouldMove YES else if (acceleration.x lt 0.25) tilting the device downwards destX currentX (acceleration.y kPlayerSpeed) destY currentY (acceleration.x kPlayerSpeed) shouldMove YES else if(acceleration.y lt 0.25) tilting the device to the right destX currentX (acceleration.y kPlayerSpeed) destY currentY (acceleration.x kPlayerSpeed) shouldMove YES else if (acceleration.y gt 0.25) tilting the device to the left destX currentX (acceleration.y kPlayerSpeed) destY currentY (acceleration.x kPlayerSpeed) shouldMove YES else destX currentX destY currentY if(shouldMove) CGSize wins CCDirector sharedDirector winSize ensure we aren't moving out of bounds if(destX lt 30 destX gt wins.width 30 destY lt 30 destY gt wins.height 100) do nothing else CCAction action CCMoveTo actionWithDuration 0.5f position CGPointMake(destX, playerSprite.position.y) playerSprite stopActionByTag kHeroMovementAction action setTag kHeroMovementAction playerSprite runAction action else should stop playerSprite stopActionByTag kHeroMovementAction |
37 | How to allow character to keep moving after it hits a wall I am developing an iPhone game. There is a fountain that the user should not be able to walk through. Now, this question is about checking circle point collision or anything like that. I am checking collision with CGRectIntersectsRect(character1.frame, fountain.frame). But, here is the problem If I prevent the person from moving he will never be able to move. So, I tried combatting this with following if (character.center.y gt fountain.center.y amp amp CGRectIntersectsRect(character1.frame, fountain.frame) amp amp g false) g true character1.center CGPointMake(character1.center.x, character1.center.y 0.1) if (character.center.x gt fountain.center.x amp amp CGRectIntersectsRect(character1.frame, fountain.frame)) character1.center CGPointMake(character1.center.x 0.1, character1.center.y) if (character.center.y lt fountain.center.y amp amp CGRectIntersectsRect(character1.frame, fountain.frame)) character1.center CGPointMake(character1.center.x, character1.center.y 0.1) if (character.center.x lt fountain.center.x amp amp CGRectIntersectsRect(character1.frame, fountain.frame)) character1.center CGPointMake(character1.center.x 0.1, character1.center.y) This should check what side the character1 is intersecting the fountain and then make it so it is not intersecting the fountain by incrementing or decrementing the x or y coordinates of the characters it. But, this still gives weird results. It will move it diagonally across the fountain if keep holding down on the the top side of the fountain and also, it will keep moving it left other wise on the top of the fountain. |
37 | What technologies are used to develop games for tablets and iPhones? What technologies are used to develop games for tablets and iPhones? Would Flash be commonly used? Is HTML5 capable of animation and interactivity, or would a game file simply be placed within HTML5 code? Is Flash and HTML5, and then wrapping the game for different phone tablet operating systems a common combination? |
37 | Which API for cross platform mobile audio? This question focuses on the API's available on phones. I'd been planning to use OpenAL in my game for maximum portability. It runs great on Linux so I can quickly iterate while developing as well as leverage the desktop's superior debugging tools. However I've recently heard that Android doesn't support OpenAL well. Instead they've gone with an OpenSL ES library. What I'm looking for is a free Audio library that I can use with minimal custom code on iPhone, Android, and my Linux desktop. Does such a library exists? Some extra details The game is written in C with custom minimal front ends, e.g. ObjC for iPhone, Java for Android, and SFML for desktops. I'm using OpenGL ES for portability as iPhone doesn't support the more advanced OpenGL APIs. |
37 | Is good practice to optimize FPS even when it's above the lower limit to give illusion of movement? I started over 50 FPS on the iPhone, but now I'm bellow 30 PFS, I've seen most iPhone games clamped to either 60 or 30 FPS, even when 24 or less would give the illusion of movement. I've concidered my limit to be a little bit over 15 FPS, in fact my physics simulation is updated at that rate (15.84 steps s) as that is the lowest that still give fluid movement, a bit lower gives jerky motion. Is there a practical reason why to clamp FPS way above the lower limit? Update The following image could help to clarify I can independently set the physic simulation step, frame rate, and simulation interval update. My concern is why should I clamp any of those to values greater than the minimum? For instance to conserve battery life I could just to choose the lower limits, but it seems that 60 or 30 FPS are the most used values. |
37 | i want to move arrow by dragging and than want to toss throw when i give swipe event In My Application I Have One Arrow Image With Fix Center and i Can rotate it by touch move method on same center but i also need to Toss trow the arrow after doing some rotation with dragging or without doing that How Can I Put The Toss Throw Action in MyApplication Thank You Very Much In advance |
37 | Best Method to Create Side Scrolling Levels? Cocos2D I am looking to start my first side scroller project using Cocos2D, but I am curious. What is the preferred best method of creating you levels? For large levels I see hand making it very laborious, is there a more visual way of doing so, as punching in coordinates for everything at a guess seems wrong. Which is why Im here to learn from you guys. So any help would be much appreciated, thanks. |
37 | my iPhone app skips the splash screen! I have developed an iPhone app. When I have installed it in the device, it worked fine, ie it showed, the logo screen, the title screen and goes to game screen and now I have exited pressing the home button. The problems starts when I relaunch the app, it straightly goes to the game screen, by skipping the splash screens. While I was working on it the app crashed and when I launched again it showed the logo screen and title screen. But when I relaunched it, the splash screens where skipped. Could you tell me the possible errors that might have occurred? |
37 | How are you handling scores that can worsen (e.g. Elo rating) in Game Center? Currently, Game Center leaderboard scores can only change one way (e.g. increase). This makes it impossible (I think) to deal with Elo ratings and the like. How are you getting around this in your leaderboards? I have filed a bug report feature request with Apple already FWIW. Are you using a third party leaderboard service? Rolling your own? |
37 | How can I make a rectangle to an irregular shape? I used masking for breaking an image into the below pattern. Now that it's broken into different pieces I need to make a rectangle of each piece. I need to drag the broken pieces and adjust to the correct position so I can reconstruct the image. To drag and put at the right position I need to make the pieces rectangles but I am not getting the idea of how to make rectangles out of these irregular shapes. How can I make rectangles for manipulating these pieces? This is a follow up to my previous question. |
37 | .NET WCF as backend server for iPhone games I'm planning to develop an iPhone game. Is it possible to use .NET WCF as a backend? The server would be windows 2008 and MS SQL database. |
37 | Efficient Bullet Firing Class I've been struggling with this for a while. I have been trying to create a bullet pool class for a game I have made that doesn't cause a significant fps drop. I have tried creating a bullet pool and have also tried dynamically creating and deleting bullets, both of which drop the fps of the game around 10 15. I ran a test a few days ago and just put a return statement in the bullet pool's firebullet function, which represented the logic leading up to this, function calling, etc. This only dropped the fps 2 4. If I can fire bullets without dropping the fps more than another 2 3, I would be satisfied. My bullets are autorelease objects that are a subclass of a ccnode. I create a ccsprite and a box2d b2body for each one. I am working on the ios platform. Any thoughts on how to make this more efficient? Has anyone managed to do something similar to this? |
37 | Rotation based on x coordinate and x velocity? (void) accelerometer (UIAccelerometer )accelerometer didAccelerate (UIAcceleration )acceleration float deceleration 0.3f, sensitivity 8.0f, maxVelocity 150 adjust velocity based on current accelerometer acceleration playerVelocity.x playerVelocity.x deceleration acceleration.x sensitivity we must limit the maximum velocity of the player sprite, in both directions (positive amp negative values) playerVelocity.x fmaxf(fminf(playerVelocity.x, maxVelocity), maxVelocity) Hi, I want to rotate my sprite based on the velocity and accelerometer input. My sprite can move along the X axis like so lt sprite But it always faces forwards, if it is moving left I want it to point slightly to the left, the degree of how far it is pointing to be judged from the velocity. This should also work for the right. I tried using atan but as the y velocity and position is always the same the function returns 0, which doesn't rotate it at all. Any ideas? Regards, Lewis. |
37 | What are the app file size limitations for different smartphone OSes carriers? I know the iPhone App Store limits how large an app can be in general and there are also limitations with AT amp T over the size it can be to transmit over a data plan vs WiFi. I have no idea what, if any, these limits are for Android apps and what I'm finding online is a mix of different numbers. Does anyone know these numbers definitively? The Android game I'm porting is in the 20 30MB range and we'd like to know if we need to further reduce its size. |
37 | .NET WCF as backend server for iPhone games I'm planning to develop an iPhone game. Is it possible to use .NET WCF as a backend? The server would be windows 2008 and MS SQL database. |
37 | install unity package in to iphone? HI All, what is the steps of to install the unity package in to iphone and create a build (app file )that my client can also able to install in his iphone . Thanks, balraj. |
37 | Issues with background coordinate configuration in objective c with runAction? In my game I want to have two backgrounds going one after the other creating a continuous loop moving to the left. However, right now one goes, and the other does not follow it. Here's what I currently have, which isn't working. if((self super init )) self.isTouchEnabled YES background CCSprite spriteWithFile "testbackground88.png" self addChild background z 1 background.position ccp(500,240) id repeat1 CCRepeatForever actionWithAction CCSequence actions CCMoveTo actionWithDuration 7 position ccp( 300,240) , CCPlace actionWithPosition ccp(800,240) ,nil background runAction repeat1 background2 CCSprite spriteWithFile "testbackground92.png" self addChild background2 z 1 background2.position ccp(500,240) id repeat2 CCRepeatForever actionWithAction CCSequence actions CCMoveTo actionWithDuration 7 position ccp( 300,240) , CCPlace actionWithPosition ccp(800,240) ,nil background2 runAction repeat2 |
37 | Thread safety in Cocos2d iPhone? After tinkering a bit with cocos2d, I discovered that there is no classic game loop and everything is more or less event driven. I guess I can wrap my head around that, no problem. But I cannot find anything about thread safety. Say, I schedule something to occur every two seconds, which Thread will run the code? Given that I cannot find anything about that, I guess there is just one Cocos2d Thread and everything will be fine. Nevertheless, this implicit assumption does not give me a good feeling. Knowing is better than guessing. ) Can anyone shed some light onto that topic? |
37 | Has anyone used MonoTouch for a game? With the pending release of MonoDroid we have decided to revisit MonoTouch as a possible alternative to gearing up some Objective C skills. I was wondering if anyone had any experience and would share the gotchas before everyone else hits them. Set to CW, one hurdle per answer please. MonoTouch allows C development of iPhone and iPad applications with access to native code libraries. |
37 | Do I have to keep all my UI elements within the safe area defined by the iPhone X? Suppose this is my game's screen for the iPhone 8 I have 7 blue buttons, and one blue bar at the bottom which is used to display commentary text. I understand that the iPhone X has a safe area. In this case, there would be a bottom inset because of the home indicator and the swiping gestures. The swiping and the home indicator pose no issue to my players. The game does not use any sort of gestures, and the center button is large enough that the home indicator doesn't really affect its aesthetics. Given that, do I still have to avoid the bottom inset? Am I supposed to keep all my buttons within the safe area defined by the iPhone X even when it doesn't affect my user experience? If I were to stay within the safe area, then I would have to push the bar and the buttons upwards by several pixels, then the leftmost buttons have to be pushed to the right, and the rightmost buttons to the left. That wouldn't look really great with my game art. Would my game be rejected if I don't keep my elements inside the safe area? It seems like I must indeed keep all my UI elements within that area, based on this image from the keynote |
37 | iOS game integrated with Facebook Random game How could I implement a random game for iOS via Facebook. I registered my game with Facebook and done everything so far... Can Facebook do such a thing? EDIT I connected my app to Facebook, I can send requests, publish open graphs etc. But i need to connect players to play online via Facebook, such as Bubble Galaxy with Buddies. Do they use Facebook for this? Any tutorial or idea ? |
37 | Slow motion of a spherical object on an blunt slant obstacle In cocos2d environment and box2D when an spherical object falls on a blunt slant obstacle, it moves really slowly, that's nauseating, if you have coded to not to have any interaction with world while object is in motion. Is there any way to get rid of this slow motion of object? |
37 | How can I scroll sprites when swiping using Cocos2D? I'm adding 3 sprites (layers) to CCParallaxNode BGLayer CCSprite spriteWithFile "Layer.png" backgroundNode addChild BGLayer z 2 parallaxRatio layer1Speed positionOffset ccp(screenSize.width 2,screenSize.height 2) How can I create the scroll when swiping? |
37 | Saving data in games? I'm soon going to make a game for the iPhone as a school project. My idea was to make a TLOZ remake, with Tiled Maps. However, I'm not quite sure how save the data. In TLOZ you have a lot of sub quests, treasures, items, and much more. I want the user to only be able to open a treasure once. Therefore I have to save this information somehow. However, I'm not sure how to assign the data to that certain object, for example that treasure that Link has opened. I thought about making id's for every object, but I'll have multiple maps, and it doesn't seem like the right solution. Are there any standards for this? Or does anyone have another idea? |
37 | Game server for an android iOS turn based board game I am currently programming an iPhone game and I would like to create an online multiplayer mode. In the future, this app will be port to Android devices, so I was wondering how to create the game server? First at all, which language should I choose? How to make a server able to communicate both with programs written in objective c and Java? Then, how to effectively do it? Is it good if I open a socket by client (there'll be 2)? What kind of information should I send to the server? to the clients? |
37 | my iPhone app skips the splash screen! I have developed an iPhone app. When I have installed it in the device, it worked fine, ie it showed, the logo screen, the title screen and goes to game screen and now I have exited pressing the home button. The problems starts when I relaunch the app, it straightly goes to the game screen, by skipping the splash screens. While I was working on it the app crashed and when I launched again it showed the logo screen and title screen. But when I relaunched it, the splash screens where skipped. Could you tell me the possible errors that might have occurred? |
37 | Help figuring out how to build for the iOS Unit3D So currently I'm exporting my game strictly for testing to the iOS (iPad.) I don't own a Mac, so I'm having my client make a build from his Mac, but that means I need very specific instructions for him as he isn't very tech savvy. I've looked online and can't find much at all about what all you need to export from Unity and make a file for the iOS, then sync it to your iPad. Could anyone provide a video or and help at all for this? Thanks, Tim. |
37 | Save File sharing over Mobile Networks I'm looking to have people share game content, save files, or characters on a mobile game platform. That means they need to be able to upload and download from their phone, other iOS device, or computer. What's the best way to do this? Does Apple have a history of allowing games to download 'content' (incl. graphics) that hasn't been approved? Are there any apps that do this, that I can try out? Thanks, EDIT The files I want to share will be simple .plist files, probably in binary format. |
37 | my iPhone app skips the splash screen! I have developed an iPhone app. When I have installed it in the device, it worked fine, ie it showed, the logo screen, the title screen and goes to game screen and now I have exited pressing the home button. The problems starts when I relaunch the app, it straightly goes to the game screen, by skipping the splash screens. While I was working on it the app crashed and when I launched again it showed the logo screen and title screen. But when I relaunched it, the splash screens where skipped. Could you tell me the possible errors that might have occurred? |
37 | How do I create this underwater effect with Cocos2D? http vimeo.com 2461697 Hi everyone, I'm trying to create an effect like this, the underwater effect (water distortion). I've looked around and I've seen references to "water caustics" but I'm not sure how to create this in Cocos2d or if it's done with obj c only. Thanks. |
37 | Updating OpenGL ES 1.1 based iPhone game to use Open GL ES 2.0 I'm fairly new to anything OpenGL in general. I've made an OpenGL ES 1.1 based 2D iPhone game by working from sample code. I'm under the impression that OpenGL ES 2.0 is substantially different from 1.1. So what does updating 1.1 code to 2.0 entail? I'm accustomed to the kinda basic drawing pattern of "push matrix, translate, rotate, draw 2D texture, pop matrix". What's the "equivalent" in 2.0? |
37 | How to get a large quantity of photographs in an app while being memory efficient?? There have been a lot of word games (apps) lately and some use graphics but others use photographs and I was hoping that someone could explain how these games manage to get so many photos in an app without taking up huge amounts of memory? The easiest example I can give is an app called '4 pics 1 word' it has over 350 levels and obviously 4 pics on each level and the photos are good quality on retina screens but the memory of the app is less than 40mb, if I have remembered correctly. I was curious as to how this works, is it each photo being optimized in photoshop (save for web and devices) (png or jpeg) or is it something to do with the code or something else? I know this question is quite broad but any answers, help, links to anything would be greatly appreciated. |
37 | How do I randomly create and store enemy data for my iPhone game? In my game you need to protect something from enemies. There can be many on the screen at once. But I don't know how to create the enemies randomly, and how I can save the data to each enemy? Can give good tips or good links to tutorials? |
37 | Detecting End of Animation So I am making a death animation for a game. enemy1 is a UIImageView, and what I'm doing is when an integer is less than or equal to zero, it calls this deathAnimation which only happens once. What I want to do is use a CGPointMake right when the animation is finished being called. Note that before the deathAnimation is called, there is another animation that is constantly being called 30 times a second. I'm not using anything like cocos2d. if (enemy1health lt 0) self slime1DeathAnimation How can i detect the end of this animation This is how the animation is done (void)slime1DeathAnimation enemy1.animationImages NSArray alloc initWithObjects UIImage imageNamed "Slime Death 1.png" , UIImage imageNamed "Slime Death 2.png" , UIImage imageNamed "Slime Death 3.png" , UIImage imageNamed "Slime Death 4.png" , UIImage imageNamed "Slime Death 5.png" , nil enemy1.animationDuration 0.5 enemy1.animationRepeatCount 1 enemy1 startAnimating If you need more code just ask |
37 | velocity question from book iPhone I am reading an iphone game dev book and I have a question about velocity. mainly it is this line playerVelocity ccp(playerVelocity.x dec acceleration.x sens, 0) Why do you mutiple the playerVelocity.x by the deceleration. the book says it works by reducing the current velocity so it is easier to change direction and then add the ( acceleration.x sens. ) this piece of code is using the accelerometer. float dec 0.4f lower quicker to change direction float sens 6.0f higher more sensitive float maxVel 100 playerVelocity ccp(playerVelocity.x dec acceleration.x sens, 0) NSLog( " ", NSStringFromCGPoint(playerVelocity)) if(playerVelocity.x gt maxVel) playerVelocity.x maxVel else if(playerVelocity.x lt maxVel) playerVelocity.x maxVel |
37 | cocos2d exclude GUI layer transformation I have a game layer that should be pannable and pinchable and a GUI layer as an overlay that's excluded from the transformations. I added the pinch and pan gesture recognizer to the view and set the view.transform like so view.transform CGAffineTransformConcat(panTransformation, pinchTranslation) But it actually scales moves the GUI layer, ofcourse, as it is a layer added to that view aswell. Sure I could do the transformations the layer itself, but the touch coordinates are scaled aswell, and calculating where the user actually tapped based on scale and translation looks like a big overhead to me. Can I somehow add a separate view and make a GUI layer it's child? Or in any other way add GUI layer that's excluded from the transformations ? |
37 | Game Development Resources? I want to make an iPhone game and I was wondering if somebody could point me to some resources. Before you rage and close this, I am not looking for just a tutorial on programming, I could just google that. I need to find a tutorial on how to actually make a game, as in how to organize your code, what type of methods to run in separate threads, how to manage these threads in a game, etc. I already know everything I need I can write a physics engine from scratch, I can write a 3D graphics pipeline from scratch, and so on. What I cannot figure out is how to combine all of this knowledge into correctly and efficiently making a game. Obviously for this one would probably go to college, but seeing as I am still in high school, that is not an option. If anyone would know some tutorials or resources, any pointers would be appreciated. |
37 | What Game Development books should my partner myself read? My partner and I are starting to get into game development on the iPhone. I'm a programmer and he's not. We are looking for some good language agnostic game programming books. Hopefully things that will explain basic game development principles without focusing too much on the particulars of a language and more on the concepts needed to build and design games. We will probably focus on 2D games (at the beginning anyways) so no need for books on in depth 3D math, complex AI, etc. Any suggestions? |
37 | How do you get textures out of a png file I have 1 png of many different textures. I want to use these textures in my iphone game using cocos2d. I found the program "Zwoptex" where you can combine many textures to one png and create a plist file that you can use in your program. But if you have already a png file how do you get all these textures out of this file automatically OR how do I create a plist file from this png file? |
37 | How to sync game tick in peer to peer game? I am making a 2 player iphone action game using a synchronization service (in this case Firebase). The service allows state syncing through the internet, but I have to execute all game logic on the phones. I've read a bunch of game networking articles, and since I have no server, it seems like if I can get both phones to start the game at "exactly" the same time in realtime, I can adjust everything from there. (Planning on using a "tick" count on each phone, and sending the tick along with actions, then rewinding the simulation if necessary. The phones divide the game into halves to determine authority). But how do you get remote clients to start a game tick at the same time?? It seems like this would be necessarily in lock step peer to peer, and something like it in FPS games. The strategy I'm using now tries to have one client "guess" the other client's clock time, including ping time. If correct, they both start the game based on the guess (since for that message it was on). a sends a.localTime b receives message. Returns b.localTime, and dTime(a b) a receives message. Returns a.localTime, and dTime(b a) b receives message. If a.localTime dTime(b a) is very close to new b.localTime, send accept message. b starts game at new b.localTime 1 second a receives accept. Starts game at accepted a.localTime dTime(b a) 1s I made a little number counter thing to go with the tick, and they're just barely off. I can't see how this is possible though, since A "guessed" B's time, they should start at exactly the same time... See anything wrong with my method? What's an easier way? I'm trying to avoid using a server if possible. |
37 | install unity package in to iphone? HI All, what is the steps of to install the unity package in to iphone and create a build (app file )that my client can also able to install in his iphone . Thanks, balraj. |
37 | Cocos 2D Hold down CCMenuItem I am using the following code to move a CCSprite left and right. (id)init CCMenuItemImage moveLeftButton CCMenuItemImage itemFromNormalImage "Move Left Button.png" selectedImage "Move Left Button.png" target self selector selector(moveLeftVoid ) (void)moveLeftVoid id moveLeft CCMoveBy actionWithDuration .3 position ccp( 10, 0) mainSprite runAction moveLeft This does work, but only as a single tap. What I want for the CCSprite to move continously in that direction when the CCMenuItem is held down. Then when it's released the character stops moving. If you need to see more code, please just ask. ) Thanks |
37 | Best practice for image compression Which is the best format or best technique to compress images without loss of quality for iPhone iPad games? |
37 | Making filled circles in cocos2d How can you make filled in circles in cocos2d? I understand you have to create a new method, but I don't really understand how it works how to do it. Could someone please provide maybe an example or tell me how to go about achieving this? Also, I need to create about 24 filled in circles, would this cause lags of some sort? Thanks! |
37 | How do I create a sky box with OpenGL ES 2.0? Can you give me hint to any good sky box example in OpenGL ES 2.0? I have found only OpenGL and does not work for me. I am doing it this way Initialization glUseProgram(m programSkyBox.Program) glGenBuffers(1, amp skyBoxVertexBuffer) glBindBuffer(GL ARRAY BUFFER, skyBoxVertexBuffer) float vertices 24 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, glBufferData(GL ARRAY BUFFER, sizeof(vertices), vertices, GL STATIC DRAW) glGenBuffers(1, amp skyBoxIndexBuffer) glBindBuffer(GL ELEMENT ARRAY BUFFER, skyBoxIndexBuffer) GLubyte indices 14 0, 1, 2, 3, 7, 1, 5, 4, 7, 6, 2, 4, 0, 1 glBufferData(GL ELEMENT ARRAY BUFFER, sizeof(indices), indices, GL STATIC DRAW) Drawing the skybox glClearColor(0.5f, 0.5f, 0.5f, 1) glClear(GL COLOR BUFFER BIT GL DEPTH BUFFER BIT) glUseProgram(m programSkyBox.Program) glDisable(GL DEPTH TEST) skybox should be drawn behind anything else glBindTexture(GL TEXTURE CUBE MAP, m textures.Cubemap) glBindBuffer(GL ARRAY BUFFER, skyBoxVertexBuffer) glVertexAttribPointer(m programSkyBox.Attributes.Position, 3, GL FLOAT, GL FALSE, 0, (void )0) glEnableVertexAttribArray(m programSkyBox.Attributes.Position) glBindBuffer(GL ARRAY BUFFER, 0) glBindBuffer(GL ELEMENT ARRAY BUFFER, skyBoxIndexBuffer) glDrawElements(GL TRIANGLE STRIP, 14, GL UNSIGNED BYTE, 0) glBindBuffer(GL ELEMENT ARRAY BUFFER, 0) glEnable(GL DEPTH TEST) Texture loading is working. Shader is correctly compiled and looks like this Vertex shader attribute vec4 position varying mediump vec3 texCoord void main() texCoord.xyz position.xyz Fragment shader uniform samplerCube Sampler varying mediump vec3 texCoord void main() mediump vec3 cube vec3(textureCube(Sampler, texCoord.xyz)) gl FragColor vec4(cube, 1.0) But I can't get the cube visible. Am I doing anything wrong? |
37 | As an Android dev, what should I keep in mind for porting to iPhone? As an Android game developer, what should I keep in mind while developing my game if I ever wanted to cross platform the game to the iPhone? Any strategies, tips, etc. on porting to both of these mobile platforms? |
37 | How to support all iOS device screen sizes resolutions in my game I made this game. Right now the game supports all iOS devices except iPhone 5. The definition of each level of the game is kept in a plist. The creation of each level is done through a graphical level editor. Each device family has its own plists. So, right now the game has 100 levels and 200 plists 100 plists for the iPhone family and 100 plists for the iPad family. In order to support the iPhone 5 I need to create 100 new plists and adjust the plists accordingly, which is time consuming, not to mention the creation of new levels... The editor for creating and editing the levels is solely based on the manipulation of UIViews that describe the game elements. So, this is the code that I wrote to save and restore the state of each UIView in one level of the game. (void)encodeWithCoder (NSCoder )aCoder Save the screen size of the device that the view was saved on aCoder encodeCGSize self.gameView.bounds.size forKey "saveDeviceGameViewSize" ALL properties are saved in normalized coords Save the center of the view CGPoint normCenter CGPointMake(self.center.x self.gameView.bounds.size.width, self.center.y self.gameView.bounds.size.height) aCoder encodeCGPoint normCenter forKey "center" I rely on view bounds NOT frame CGRect normBounds CGRectMake(0, 0, self.bounds.size.width self.gameView.bounds.size.width, self.bounds.size.height self.gameView.bounds.size.height) aCoder encodeCGRect normBounds forKey "bounds" Here I save the transformation of the view, it has ONLY rotation info, not translation or scalings aCoder encodeCGAffineTransform self.transform forKey "transform" (id)initWithCoder (NSCoder )aDecoder self super initWithCoder aDecoder if (self) Restore the screen size of the device that the view was saved on saveDeviceGameViewSize aDecoder decodeCGSizeForKey "saveDeviceGameViewSize" Adjust the view center CGPoint tmpCenter aDecoder decodeCGPointForKey "center" tmpCenter.x self.gameView.bounds.size.width tmpCenter.y self.gameView.bounds.size.height self.center tmpCenter Restore the transform self.transform aDecoder decodeCGAffineTransformForKey "transform" Restore the bounds CGRect tmpBounds aDecoder decodeCGRectForKey "bounds" CGFloat ratio self.gameView.bounds.size.height saveDeviceGameViewSize.height tmpBounds.size.width (saveDeviceGameViewSize.width ratio) tmpBounds.size.height self.gameView.bounds.size.height self.bounds tmpBounds return self I am really stuck here. I cannot explain what is wrong with this code. The UIViews are correctly positioned when restored on the same device. This is not true when the level is opened on another device. There are slightly misplaced elements and distortions. Here are two pairs of screenshots demostrating the issues What is the correct approach to handle the scaling of the levels on different screens? Should I rely on AutoResizingMasks (I need to support iOS 4 and later)? In any case I would like to give a solid paradigm on how to achieve this. |
37 | What are the minimum requirements for UDK on iOS? Infinity Blade asks for 3GS or better devices, which I'm told is because it uses OpenGL ES 2. Will every game made with the iOS version of the UDK only work with 3GS devices and up? |
37 | Looking for the reference tutorials for the joints in the Box2D for iphone I can't find the tutorials of joints class in the Box2D for iPhone. I am unable to run a Testbed for iPhone Box2D. (void)ccTouchesBegan (NSSet )touches withEvent (UIEvent )event if ( mouseJoint! NULL)return UITouch mytouch touches anyObject CGPoint location mytouch locationInView mytouch view location CCDirector sharedDirector convertToGL location b2Vec2 locationWorld b2Vec2(location.x PTM RATIO,location.y PTM RATIO) ristrict the player within the ground limit keep stucking the player with grounditself..... if ( playerFixture gt TestPoint(locationWorld)) b2MouseJointDef md md.bodyA groundBody md.bodyB playerBody md.target locationWorld md.collideConnected true md.maxForce 100.0f playerBody gt GetMass() mouseJoint (b2MouseJoint ) world gt CreateJoint( amp md) playerBody gt SetAwake(true) (void)ccTouchesMoved (NSSet )touches withEvent (UIEvent )event if ( mouseJoint NULL) return UITouch myTouch touches anyObject CGPoint location myTouch locationInView myTouch view location CCDirector sharedDirector convertToGL location if (location.y lt 240.00 amp amp location.y gt 20.0f) b2Vec2 locationWorld b2Vec2(location.x PTM RATIO, location.y PTM RATIO) mouseJoint gt SetTarget(locationWorld) (void)ccTouchesEnded (NSSet )touches withEvent (UIEvent )event if ( mouseJoint) world gt DestroyJoint( mouseJoint) mouseJoint NULL |
37 | Recording the gameplay in the game itself? I'm presently working on a 3D car racing game for the iOS platform. I had to implement a replay system and then record that replay in a video file to upload it to YouTube. I'm only having issues with the recording part, the rest is done. What I'm doing is using the glReadPixels() command of OpenGL ES 1.1 to capture the framebuffer content and creating a video from these frames during runtime (using AVFoundation framework). The problem I'm facing is that I have to call glReadPixels() in each update which is very slow . It decreases the FPS from around 30 to only 2 3... Is there any alternative to the glReadPixels() command? Or did anyone create a replay system and recorded to video? |
37 | How do I open the camera in a CCScene node in a Cocos2D application? I am new to Cocos2D and I can't find the way to open the camera from the library. I want to open the camera in the my game, can any one help me with with this? Thank you in advance. |
37 | How to support all iOS device screen sizes resolutions in my game I made this game. Right now the game supports all iOS devices except iPhone 5. The definition of each level of the game is kept in a plist. The creation of each level is done through a graphical level editor. Each device family has its own plists. So, right now the game has 100 levels and 200 plists 100 plists for the iPhone family and 100 plists for the iPad family. In order to support the iPhone 5 I need to create 100 new plists and adjust the plists accordingly, which is time consuming, not to mention the creation of new levels... The editor for creating and editing the levels is solely based on the manipulation of UIViews that describe the game elements. So, this is the code that I wrote to save and restore the state of each UIView in one level of the game. (void)encodeWithCoder (NSCoder )aCoder Save the screen size of the device that the view was saved on aCoder encodeCGSize self.gameView.bounds.size forKey "saveDeviceGameViewSize" ALL properties are saved in normalized coords Save the center of the view CGPoint normCenter CGPointMake(self.center.x self.gameView.bounds.size.width, self.center.y self.gameView.bounds.size.height) aCoder encodeCGPoint normCenter forKey "center" I rely on view bounds NOT frame CGRect normBounds CGRectMake(0, 0, self.bounds.size.width self.gameView.bounds.size.width, self.bounds.size.height self.gameView.bounds.size.height) aCoder encodeCGRect normBounds forKey "bounds" Here I save the transformation of the view, it has ONLY rotation info, not translation or scalings aCoder encodeCGAffineTransform self.transform forKey "transform" (id)initWithCoder (NSCoder )aDecoder self super initWithCoder aDecoder if (self) Restore the screen size of the device that the view was saved on saveDeviceGameViewSize aDecoder decodeCGSizeForKey "saveDeviceGameViewSize" Adjust the view center CGPoint tmpCenter aDecoder decodeCGPointForKey "center" tmpCenter.x self.gameView.bounds.size.width tmpCenter.y self.gameView.bounds.size.height self.center tmpCenter Restore the transform self.transform aDecoder decodeCGAffineTransformForKey "transform" Restore the bounds CGRect tmpBounds aDecoder decodeCGRectForKey "bounds" CGFloat ratio self.gameView.bounds.size.height saveDeviceGameViewSize.height tmpBounds.size.width (saveDeviceGameViewSize.width ratio) tmpBounds.size.height self.gameView.bounds.size.height self.bounds tmpBounds return self I am really stuck here. I cannot explain what is wrong with this code. The UIViews are correctly positioned when restored on the same device. This is not true when the level is opened on another device. There are slightly misplaced elements and distortions. Here are two pairs of screenshots demostrating the issues What is the correct approach to handle the scaling of the levels on different screens? Should I rely on AutoResizingMasks (I need to support iOS 4 and later)? In any case I would like to give a solid paradigm on how to achieve this. |
37 | Create cylinder using OpenGL ES I want to draw cone using OpenGL ES I have gone through many links to draw cylinder but I don't have any idea or approach to draw the cylinder. I've seen the gluCylinder function for OpenGL, but no equivalent function in OpenGL ES. i tried the below code float radius, halfLength int slices for(int i 0 i lt slices i ) float theta ((float)i) 2.0 M PI float nextTheta ((float)i 1) 2.0 M PI glBegin(GL TRIANGLE STRIP) vertex at middle of end glVertex3f(0.0, halfLength, 0.0) vertices at edges of circle glVertex3f(radius cos(theta), halfLength, radius sin(theta)) glVertex3f (radius cos(nextTheta), halfLength, radius sin(nextTheta)) the same vertices at the bottom of the cylinder glVertex3f (radius cos(nextTheta), halfLength, radius sin(nextTheta)) glVertex3f(radius cos(theta), halfLength, radius sin(theta)) glVertex3f(0.0, halfLength, 0.0) glEnd() |
37 | Looking for the reference tutorials for the joints in the Box2D for iphone I can't find the tutorials of joints class in the Box2D for iPhone. I am unable to run a Testbed for iPhone Box2D. (void)ccTouchesBegan (NSSet )touches withEvent (UIEvent )event if ( mouseJoint! NULL)return UITouch mytouch touches anyObject CGPoint location mytouch locationInView mytouch view location CCDirector sharedDirector convertToGL location b2Vec2 locationWorld b2Vec2(location.x PTM RATIO,location.y PTM RATIO) ristrict the player within the ground limit keep stucking the player with grounditself..... if ( playerFixture gt TestPoint(locationWorld)) b2MouseJointDef md md.bodyA groundBody md.bodyB playerBody md.target locationWorld md.collideConnected true md.maxForce 100.0f playerBody gt GetMass() mouseJoint (b2MouseJoint ) world gt CreateJoint( amp md) playerBody gt SetAwake(true) (void)ccTouchesMoved (NSSet )touches withEvent (UIEvent )event if ( mouseJoint NULL) return UITouch myTouch touches anyObject CGPoint location myTouch locationInView myTouch view location CCDirector sharedDirector convertToGL location if (location.y lt 240.00 amp amp location.y gt 20.0f) b2Vec2 locationWorld b2Vec2(location.x PTM RATIO, location.y PTM RATIO) mouseJoint gt SetTarget(locationWorld) (void)ccTouchesEnded (NSSet )touches withEvent (UIEvent )event if ( mouseJoint) world gt DestroyJoint( mouseJoint) mouseJoint NULL |
37 | Best practices for playing sounds in iPhone games What are the best practices for playing sounds in iPhone games? Specifically, what are the best practices while playing sounds simultaneously without affecting other processing much. Is there any recommendation about how sound files must be made to suit the processing? |
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