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  • accessing c++ class members with luaplus

    - by cppanda
    i've implemented LuaPlus in my engine eventmanager successfully and really like the flexibility i gained. but i'm still not exactly where i want to by, because i can't link my c++ classes to a lua class. for example i have a Actor class in c++, and i want to be able to create the same class in lua and gain access to members with luaplus, but i can't figure how i can achieve that. Is this actually luaplus built in functionality, or do i have to write my own interface that exchanges data tables between c++ and lua? my current approach would be to fire an event in luascript that creates an new actor class in c++ code, and transfer its id and the data i need to back to lua. when i modify the data i send the modifications back to c++ code again, but i actually thought there's something in luaplus that exposes this functionality already.

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  • Technique to have screen independent grid based puzzle with sprite animation

    - by Yan Cheng CHEOK
    Hello all, let's say I have a fixed size grid puzzle game (8 x 10). I will be using sprites animation, when the "pieces" in the puzzle is moving from one grid to another grid. I was wondering, what is the technique to have this game being implemented as screen resolution independent. Here is what I plan to do. 1) The data structure coordinate will be represented using double, with 1.0 as max value. // Puzzle grid of 8 x 10 Environment { double width = 0.8; double height = 1.0; } // Location of Sprite at coordinate (1, 1) Sprite { double posX = 0.1; double posY = 0.1; double width = 0.1; double height = 0.1; } // scale = PYSICAL_SCREEN_SIZE drawBitmap ( sprite_image, sprite_image_rect, new Rect(sprite.posX * Scale, sprite.posY * Scale, (sprite.posX + sprite.width) * Scale, (sprite.posY + sprite.Height) * Scale), paint ); 2) A large size sprite image will be used (128x128). As sprite image shall look fine if we scale from large size down to small size, but not vice versa. Besides the above mentioned technique, is there any other consideration I had missed out?

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  • Cropping a line (laser beam) in XNA

    - by electroflame
    I have a laser sprite that I wish to crop. I want to crop it so when it collides with an item, I can calculate the distance between the starting point, and the ending point, and only draw that. This eliminates the "overdraw" of a laser drawing past an item. Essentially, I'm trying to crop a line, but also keep that line "attached" to the nose of my ship. The line should not be drawn past the nose of my ship, that should be the starting point. There is no rotation to worry about. Currently, I thought that doing this through SpriteBatch would be best. This is my current Spritebatch code: spriteBatch.Draw(Laser.sprite, new Rectangle((int)Laser.position.X, (int)Laser.position.Y, Laser.sprite.Width, LaserHeight), new Rectangle(0, 0, (int)(Laser.sprite.Width), LaserHeight), new Color(255, 255, 255, (byte)MathHelper.Clamp(Laser.Alpha, 0, 255)), Laser.rotation, new Vector2(Laser.sprite.Width/2, LaserHeight/2), SpriteEffects.None, 0); But this doesn't quite work. It does only draw part of the sprite, but when LaserHeight is incremented, it lengthens the line in both ways! I believe this is due to some stupid error on my part with the Origin of the draw. Quick recap: I need to have my laser sprite drawn with the bottom of it at the nose of my ship, and then use LaserHeight to crop the image so only part of it is drawn. I have a feeling my explanation is a bit...lacking. So if you require more information, please say so and I will try to provide more information. Thanks in advance!

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  • Board Game Design in Cocos2d

    - by object2.0
    Hi folks i am going to start a chess like board game. and for that i have reviewed a number to things available. one is http://www.mapeditor.org/ , using which you can create a grid base games. another option is geekgameboard for iphone available at http://mooseyard.lighthouseapp.com/projects/23201-geekgameboard now i want your expert opinion that would it be better to make a game in cocos2d using the first option or the second option? both looks promising to me and give good control over board design. ps: sorry for duplicates, i found about the http://gamedev.stackexchange.com/ lately after posting it on stackexchange. so i am just posting it here again as i feel its more relevant board.

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  • Making game constants/tables available to game logic classes/routines in a modular manner

    - by Extrakun
    Suppose I have a game where there are several predefined constants and charts (a XP chart, cost of goods and so on). Those could be defined at runtime, or load from files at start-up. The question is how should those logic routines access the constants and charts? For example, I could try using global variables, but that cause all classes relying on the variables to be tightly coupled with them.

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  • Making an interactive 2D map

    - by Chad
    So recently I have been working on a Legend of Zelda: A Link to the Past clone, and I am wondering how I could handle certain map interactions (like cutting grass, lifting rocks, etc). The way I am currently doing the tilemap is with 2 PNGs. The first is the "tilemap" where each pixel represents a 16x16 tile and the (red, green) values are the (x, y) coords for the tile in the second PNG (the "tileset"). I am then using the blue channel to store collision data. Each tile is split into 4 8x8 tiles and represented by a 2 bit value (0 = empty, 1 = Jumpdown point, 2 = unused right now, 3 = blocking). 4 of these 2 bit values make up the full blue channel (1 byte). So collisions work great, and I am moving on to putting interactive units on the level; but I am not sure what a good way is to do it. I have experimented with spawning an entity for each grass and rock, but there are just WAY to many; FPS just dies even if I confine it to the current "zone" the user is in (for those who remember LTTP it had zones you moved between). It does make a difference that this is a browser-based JavaScript game. tl;dr: What is a good way to have an interactive map without using full blown entities for each interactive item?

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  • Auto Save and Auto Load Game onto the Device's Storage Concept Question

    - by David Dimalanta
    I'm trying to make a simple app that will test the save and load state. Is it a good idea to make an app that has an auto save and load game feature only every time the newbies open the first app then continues it on the other day? I tried making a sprite that is moving, starting at the center. When I close and re-open the app, the sprite goes back to the center instead of the last coordinate where the sprite land on this part (i.e. at the top). The thing I want to know how the sequence of saving and loading goes like this: I open the app The starting sprite at the center. It displays a coordinate of the sprite plus number of times does the sprite move. I exit the app that automatically saves the game without notice. Finally, when I re-opened it, it automatically loads the game retaining the number of times the sprite move, coordinates, and the sprite's area landed. These steps above are similar, but not the sprite movement test app, to the sequence of saving and loading the game's level and record in Jewel Stackers for the Android app. And, by default, if there is no SD card in any tab or phone that runs on Android, does it automatically save/load onto the internal drive or the APK file itself? Is it also useful to use auto save and auto load feature for protecting and fetching informations (i.e. fastest time, last time where the sprite is located via coordinates, etc.)?

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  • Looking for literature about graphics pipeline optimization

    - by zacharmarz
    I am looking for some books, articles or tutorials about graphics architecture and graphics pipeline optimizations. It shouldn't be too old (2008 or newer) - the newer, the better. I have found something in [Optimising the Graphics Pipeline, NVIDIA, Koji Ashida] - too old, [Real-time rendering, Akenine Moller], [OpenGL Bindless Extensions, NVIDIA, Jeff Bolz], [Efficient multifragment effects on graphics processing units, Louis Frederic Bavoil] and some internet discussions. But there is not too much information and I want to read more. It should contain something about application, driver, memory and shader units communication and data transfers. About vertices and attributes. Also pre and post T&L cache (if they still exist in nowadays architectures) etc. I don't need anything about textures, frame buffers and rasterization. It can also be about OpenGL (not about DirecX) and optimizing extensions (not old extensions like VBOs, but newer like vertex_buffer_unified_memory).

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  • How to determine character's foot contact point on a uniform triangle mesh terrain?

    - by xenon
    For a terrain that is modelled by a heightmap with a uniform triangle mesh, what are some techniques I could use to determine the contact point of the foot of a character standing on the terrain? Since the terrain's Y values are altered by the heightmap, they won't be flat any more. As the character moves on the terrain, it has to know at which values of Y-value its foot should be. Conceptually, what are some methods and techniques to determine the contact point of the character's foot standing on the terrain?

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  • Restrict Tile Map to its boundaries

    - by Farooq Arshed
    I have loaded a tmx file in cocos2dx and now I am trying to implement panning. I have successfully implemented the panning first part where the map moves. Now I want to restrict the map so it does not display the map beyond its boundary where it shows black screen. I am confused as to how to implement it. Below is my code any help would be appreciated. bool HelloWorld::init() { if ( !CCLayer::init() ) { return false; } const char* tmx= "isometric_grass_and_water.tmx"; _tileMap = new CCTMXTiledMap(); _tileMap->initWithTMXFile(tmx); this->addChild(_tileMap); this->setTouchEnabled(true); return true; } void HelloWorld::ccTouchesBegan(CCSet *touches, CCEvent *event){ CCSetIterator it; for (it=touches->begin(); it!=touches->end(); ++it){ CCTouch* touch = (CCTouch*)it.operator*(); CCLog("touches id: %d", touch->getID()); oldLoc = touch->getLocationInView(); oldLoc = CCDirector::sharedDirector()->convertToGL(oldLoc); } } void HelloWorld::ccTouchesMoved(CCSet *touches, CCEvent *event) { if (touches->count() == 1) { CCTouch* touch = (CCTouch*)( touches->anyObject() ); this->moveScreen(touch); } else if (touches->count() == 2) { this->scaleScreen(touches); } } void HelloWorld::moveScreen(CCTouch* touch) { CCPoint currentLoc = touch->getLocationInView(); currentLoc = CCDirector::sharedDirector()->convertToGL(currentLoc); CCPoint moveTo = ccpSub(oldLoc, currentLoc); moveTo = ccpMult(moveTo, -1); oldLoc = currentLoc; this->setPosition(ccpAdd(this->getPosition(), ccp(moveTo.x, moveTo.y))); }

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  • Organising levels / rooms in a MUD-style text based world

    - by Polynomial
    I'm thinking of writing a small text-based adventure game, but I'm not particularly sure how I should design the world from a technical standpoint. My first thought is to do it in XML, designed something like the following. Apologies for the huge pile of XML, but I felt it important to fully explain what I'm doing. <level> <start> <!-- start in kitchen with empty inventory --> <room>Kitchen</room> <inventory></inventory> </start> <rooms> <room> <name>Kitchen</name> <description>A small kitchen that looks like it hasn't been used in a while. It has a table in the middle, and there are some cupboards. There is a door to the north, which leads to the garden.</description> <!-- IDs of the objects the room contains --> <objects> <object>Cupboards</object> <object>Knife</object> <object>Batteries</object> </objects> </room> <room> <name>Garden</name> <description>The garden is wild and full of prickly bushes. To the north there is a path, which leads into the trees. To the south there is a house.</description> <objects> </objects> </room> <room> <name>Woods</name> <description>The woods are quite dark, with little light bleeding in from the garden. It is eerily quiet.</description> <objects> <object>Trees01</object> </objects> </room> </rooms> <doors> <!-- a door isn't necessarily a door. each door has a type, i.e. "There is a <type> leading to..." from and to are references the rooms that this door joins. direction specifies the direction (N,S,E,W,Up,Down) from <from> to <to> --> <door> <type>door</type> <direction>N</direction> <from>Kitchen</from> <to>Garden</to> </door> <door> <type>path</type> <direction>N</direction> <from>Garden</type> <to>Woods</type> </door> </doors> <variables> <!-- variables set by actions --> <variable name="cupboard_open">0</variable> </variables> <objects> <!-- definitions for objects --> <object> <name>Trees01</name> <displayName>Trees</displayName> <actions> <!-- any actions not defined will show the default failure message --> <action> <command>EXAMINE</command> <message>The trees are tall and thick. There aren't any low branches, so it'd be difficult to climb them.</message> </action> </actions> </object> <object> <name>Cupboards</name> <displayName>Cupboards</displayName> <actions> <action> <!-- requirements make the command only work when they are met --> <requirements> <!-- equivilent of "if(cupboard_open == 1)" --> <require operation="equal" value="1">cupboard_open</require> </requirements> <command>EXAMINE</command> <!-- fail message is the message displayed when the requirements aren't met --> <failMessage>The cupboard is closed.</failMessage> <message>The cupboard contains some batteires.</message> </action> <action> <requirements> <require operation="equal" value="0">cupboard_open</require> </requirements> <command>OPEN</command> <failMessage>The cupboard is already open.</failMessage> <message>You open the cupboard. It contains some batteries.</message> <!-- assigns is a list of operations performed on variables when the action succeeds --> <assigns> <assign operation="set" value="1">cupboard_open</assign> </assigns> </action> <action> <requirements> <require operation="equal" value="1">cupboard_open</require> </requirements> <command>CLOSE</command> <failMessage>The cupboard is already closed.</failMessage> <message>You closed the cupboard./message> <assigns> <assign operation="set" value="0">cupboard_open</assign> </assigns> </action> </actions> </object> <object> <name>Batteries</name> <displayName>Batteries</displayName> <!-- by setting inventory to non-zero, we can put it in our bag --> <inventory>1</inventory> <actions> <action> <requirements> <require operation="equal" value="1">cupboard_open</require> </requirements> <command>GET</command> <!-- failMessage isn't required here, it'll just show the usual "You can't see any <blank>." message --> <message>You picked up the batteries.</message> </action> </actions> </object> </objects> </level> Obviously there'd need to be more to it than this. Interaction with people and enemies as well as death and completion are necessary additions. Since the XML is quite difficult to work with, I'd probably create some sort of world editor. I'd like to know if this method has any downfalls, and if there's a "better" or more standard way of doing it.

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  • Move model forward base on model orientation

    - by ChocoMan
    My model rotates on it's own Y-axis regardless of where it is in the world. Here are the controls for the left ThumbStick: UP (move model forward on Z-Axis) DOWN (move model backward on Z-Axis) LEFT & RIGHT (strafe to either side) The problem is adjusting the direction the model's orientation UP and DOWN if the player should also rotate the player while moving forward or backwards. An example what Im trying to achieve would be a car doing donuts. The car is always facing the current direction that it interprets as forward (or rear as backwards) in relation to it's local rotation. Here is how Im calling the movement: // Rotate model with Right Thumbstick along X-Axis modelRotation -= pController.ThumbSticks.Right.X * mRotSpeed; // Move Forward if (pController.IsButtonDown(Buttons.LeftThumbstickUp)) { modelPosition.Z -= -pController.ThumbSticks.Left.Y * speed; } // Move Backward if (pController.IsButtonDown(Buttons.LeftThumbstickDown)) { modelPosition.Z += pController.ThumbSticks.Left.Y * speed; } // Strafe Left if (pController.IsButtonDown(Buttons.LeftThumbstickLeft)) { modelPosition.X += -pController.ThumbSticks.Left.X * speed; } // Strafe Right if (pController.IsButtonDown(Buttons.LeftThumbstickRight)) { modelPosition.X -= pController.ThumbSticks.Left.X * speed; } // DeadZone if (!pController.IsButtonDown(Buttons.LeftThumbstickUp) && !pController.IsButtonDown(Buttons.LeftThumbstickDown) && !pController.IsButtonDown(Buttons.LeftThumbstickLeft) && !pController.IsButtonDown(Buttons.LeftThumbstickRight)) { }

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  • Dynamic character animation - Using the physics engine or not

    - by Lex Webb
    I'm planning on building a dynamic reactant animation engine for the characters in my 2D Game. I have already built templates for a skeleton based animation system using key frames and interpolation to specify a limbs position at any given moment in time. I am using Farseer physics (an extension of Box2D) in Monogame/XNA in C# My real question lies in how i go about tying this character animation into the physics engine. I have two options: Moving limbs using physics engine - applying a interpolated force to each limb (dynamic body) in order to attempt to get it to its position as donated by the skeleton animation. Moving limbs by simply changing the position of a fixed body - Updating the new position of each limb manually, attempting to take into account physics collisions. Then stepping the physics after the animation to allow for environment interaction. Each of these methods have their distinct advantages and disadvantages. Physics based movement Advantages: Possibly more natural/realistic movement Better interaction with game objects as force applying to objects colliding with characters would be calculated for me. No need to convert to dynamic bodies when reacting to projectiles/death/fighting. Disadvantages: Possible difficulty in calculating correct amount of force to move a limb a certain distance at a constant rate. Underlying character balance system would need to be created that would need to be robust enough to prevent characters falling over at the touch of a feather. Added code complexity and processing time for the above. Static Object movement Advantages: Easy to interpolate movement of limbs between game steps Moving limbs is as simple as applying a rotation to the skeleton bone. Greater control over limbs, wont need to worry about characters falling over as all animation would be pre-defined. Disadvantages: Possible unnatural movement (Depends entirely on my animation skills!) Bad physics collision reactions with physics engine (Dynamic bodies simply slide out of the way of static objects) Need to calculate collisions with physics objects and my limbs myself and apply directional forces to them. Hard to account for slopes/stairs/non standard planes when animating walking/running animations. Need to convert objects to dynamic when reacting to projectile/fighting/death physics objects. The Question! As you can see, i have thought about this extensively, i have also had Google into physics based animation and have found mostly dissertation papers! Which is filling me with sense that it may a lot more advanced than my mathematics skills. My question is mostly subjective based on my findings above/any experience you may have: Which of the above methods should i use when creating my game? I am willing to spend the time to get a physics solution working if you think it would be possible. In the end i want to provide the most satisfying experience for the gamer, as well as a robust and dynamic system i can use to animate pretty much anything i need.

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  • Networking Client Server Packet logic (How they communicate)

    - by Trixmix
    I want to know what is the logic behind server client communication through packets for a real time game. for example the server sends x packets then the client receives x packets and processes them.. Basically what is the process to keep the client and server in sync and able to receive and send packets. more in depth example of what I want to know: client step 1 wait for a packet step 2 read x packets step 3 process x packets step 4 send x packets and so on... I need to know the very basic outline of the communication. Big questions are: 1) do I send and read packets all at one time? i.e for loop though the incoming packets array list and read them all or one every server loop or what... 2) what order should I do things i.e first receive then read then process then send etc.. 3) what I asked above a step by step of what the server / client should do.. Thanks!

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  • LWJGL glRotatef() without rotating axes?

    - by Brandon oubiub
    Okay so, I noticed when you rotate around an axis, say you do this: glRotatef(90.0f, 1.0f, 0.0f, 0.0f); That will rotate things 90 degrees around the x-axis. However, it also sort of rotates the y and z axes as well. So now the y-axis is pointing in and out of the screen, instead of up and down. So when I try to do stuff like this: glRotatef(90.0f, 1.0f, 0.0f, 0.0f); glRotatef(whatever, 0.0f, 1.0f, 0.0f); glRotatef(whatever2, 0.0f, 0.0f, 1.0f); The rotations around the y and z-axes end up not how I want them. I was wondering if there is any way I can sort of rotate just the axes back to their initial position after using glRotatef(), without rotating the object back. Or something like that, just so that when I rotate around the y-axis, it rotates around a vertical axis.

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  • Rotate sphere in Javascript / three.js while moving on x/z axes

    - by kaipr
    I have a sphere/ball in three.js which I want to "roll" arround on a x/z axis. For the z axe I could simply do this no matter what the current x and y rotation is: sphere.roll_z = function(distance) { sphere.position.z += distance; sphere.rotation.x += distance > 0 ? 0.05 : -0.05; } But how can I roll it along the x axe? And how could I properly do the roll_z? I've found a lot about quateration and matrixes, but I can't figure out how to use them properly to achieve my (rather simple) goal. I'm aware that I have to update multiple rotations and that I have to calculate how far to rotate the sphere to match the distance, but the "how" is the question. It's probably just lack of mathematical skills which I should train, but a working example/short explanation would help alot to start with.

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  • As an indie game dev, what processes are the best for soliciting feedback on my design/spec/idea? [closed]

    - by Jess Telford
    Background I have worked in a professional environment where the process usually goes like the following: Brain storm idea Solidify the game mechanics / design Iterate on design/idea to create a more solid experience Spec out the details of the design/idea Build it Step 3. is generally done with the stakeholders of the game (developers, designers, investors, publishers, etc) to reach an 'agreement' which meets the goals of all involved. Due to this process involving a series of often opposing and unique view points, creative solutions can surface through discussion / iteration. This is backed up by a process for collating the changes / new ideas, as well as structured time for discussion. As a (now) indie developer, I have to play the role of all the stakeholders (developers, designers, investors, publishers, etc), and often find myself too close to the idea / design to do more than minor changes, which I feel to be local maxima when it comes to the best result (I'm looking for the global maxima, of course). I have read that ideas / game designs / unique mechanics are merely multipliers of execution, and that keeping them secret is just silly. In sharing the idea with others outside the realm of my own thinking, I hope to replicate the influence other stakeholders have. I am struggling with the collation of changes / new ideas, and any kind of structured method of receiving feedback. My question: As an indie game developer, how and where can I share my ideas/designs to receive meaningful / constructive feedback? How can I successfully collate the feedback into a new iteration of the design? Are there any specialized websites, etc?

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  • Any good C++ Component/Entity frameworks?

    - by Pat
    (Skip to the bold if you want to get straight to my question :) ) I've been dabbling in the different technologies available out there to use. I tried Unity and component based design, managing to get a little guy up and running around a map with basic pathfinding. I really loved how easy it was to program using components, but I wanted a bit more control and something more 2D friendly, so I went with LibGDX. I looked around and found 2 good frameworks for Java, which are Artemis and Apollo. I didn't like Artemis much, so I went with Apollo, which I loved. I managed to integrate it with Box2D and get a little guy running around bouncing balls. Great! But since I want to try out most of the options, there is still C++/SFML that I haven't tried yet. Coming from a Java/C# background, I've always wanted to get my hands dirty with C++. But then, after some looking around, I noticed there aren't any Component-Based frameworks for me to use. There's a somewhat done porting of Artemis, but, aside from not being completely finished, I didn't quite like Artemis even in Java. I found Apollo's approach much more.. logical. So, my question is, are there any good Component/Entity frameworks for C++ that I can use that are similar to Artemis, or preferably, Apollo?

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  • LWJGL texture bleeding fix won't work

    - by user1990950
    I tried a lot of things to fix texture bleeding, but nothing works. I don't want to add a transparent border around my textures, because I already got too many and it would take too much time and I can't do it with code because I'm loading textures with slick. My textures are seperate textures and they seem to wrap on the other side (texture bleeding). Here are the textures that are "bleeding": The head, body, arm and leg are seperate textures. Here's the code I'm using to draw a texture: public static void drawTextureN(Texture texture, Vector2f position, Vector2f translation, Vector2f origin,Vector2f scale,float rotation, Color color, FlipState flipState) { texture.setTextureFilter(GL11.GL_NEAREST); color.bind(); texture.bind(); GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_WRAP_S, GL12.GL_CLAMP_TO_EDGE); GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_WRAP_T, GL12.GL_CLAMP_TO_EDGE); GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MAG_FILTER, GL11.GL_NEAREST); GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MIN_FILTER, GL11.GL_NEAREST); GL11.glTranslatef((int)position.x, (int)position.y, 0); GL11.glTranslatef(-(int)translation.x, -(int)translation.y, 0); GL11.glRotated(rotation, 0f, 0f, 1f); GL11.glScalef(scale.x, scale.y, 1); GL11.glTranslatef(-(int)origin.x, -(int)origin.y, 0); float pixelCorrection = 0f; GL11.glBegin(GL11.GL_QUADS); GL11.glTexCoord2f(0,0); GL11.glVertex2f(0,0); GL11.glTexCoord2f(1,0); GL11.glVertex2f(texture.getTextureWidth(),0); GL11.glTexCoord2f(1,1); GL11.glVertex2f(texture.getTextureWidth(),texture.getTextureHeight()); GL11.glTexCoord2f(0,1); GL11.glVertex2f(0,texture.getTextureHeight()); GL11.glEnd(); GL11.glLoadIdentity(); } I tried a half pixel correction but it didn't make any sense because GL12.GL_CLAMP_TO_EDGE. I set pixelCorrection to 0, but it still wont work.

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  • How can I solve for the game's world coordinates?

    - by HyperGroups
    I've used 3DReaperDX to get a obj file, the header information are shown as follows: #AR=2.00606, FOV=45.09583(height), Xscale:0.83290, Yscale:0.41519, Zscale:1.0 #************************************************** #ALPHABLENDENABLE: No #ZENABLE: Yes #ZWRITEENABLE: Yes #TWOSIDED: No #INVALID: No #THIN: No #RENDERTARGET_IS_BACKBUFFER: Yes #WIDTH_DO_MATCH: Yes #RGBWRITEDISABLED: No # object DrawCall_0 to come ... g v 2143.35547 6654.99023 25835.37109 v 2243.17773 6296.61523 25957.53906 v 2343.00000 5856.84473 26093.97656 How can I get the game's world coordinates. For example: I can map the scaleTransform to the VertexData scaleTransform={X1scale,Y1scale,Z1scale} {0.8329,0.41519,1.} Is the obj file enough to get the game's world coordinates? I want to put a object in this ground, and the coordinates is the same to that in the Game Engine, And I can place something(with some fixed coordinates) in the Game and then to use 3DReaper to get the obj file. If the file is not enough itself to get the game world coordinates.

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  • Examples of interesting implementations of character stats?

    - by Tchalvak
    I've got this BBG going ( http://ninjawars.net ), and the character stats currently are simplistic. I'm looking to add a few stats to the current 1/2 (strength and maximum hitpoints, essentially). I've come up with: (strength (unchanged), speed, stamina, and some others that are somewhat interesting wildcard stats). However, I'm not satisfied with how boring the effects of some of these stats are, because they're very linear. Better stat, better effects of the stat, but the stats don't interact with each-other, there's no Rock-Paper-Scissors interaction, having more is always better all the time. So what I'd really like is to see examples of interesting character stats or effects of stats? Examples that I can think of off hand: Call of Cthulu's Insanity stat (things get really weird/chaotic if you start losing sanity) White Wolf stats, to a certain extent (the stats themselves have some basic effects, and all skills effectiveness base themselves off of stats as well) What are some other ways people have used stats to check out?

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  • XNA 4: GetData from Texture2D and Set it into Texture3D with specific order

    - by cubrman
    I am trying to convert my color grading 2d lookup texture into 3d LUT. When I simply use: ColorAtlas.GetData(data); ColorAtlas3D.SetData(data); I get this: I tried building my 2d atlass horizontally but it did not helped - the data was messed up in a different way. So my question is how can I influence the order of the data I get from the 2d atlas and how can I properly pass it into my 3d atlas? Update: I know that I can GetData from a specific Rectangular area and put it into several arrays, but the result is still the same. This is what I tried: Color[] data2D = new Color[0]; for (int i = 0; i < 32; i++) { Color[] data = new Color[32 * 32]; GraphicsDevice.SetRenderTarget(null); ColorAtlas.GetData(0, new Rectangle(0, i*32, 32, 32), data, 0, data.Length); int oldLength = data2D.Length; Array.Resize<Color>(ref data2D, oldLength + data.Length); Array.Copy(data, 0, data2D, oldLength, data.Length); } ColorAtlas3D.SetData(data2D);

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  • How to account for speed of the vehicle when shooting shells from it?

    - by John Murdoch
    I'm developing a simple 3D ship game using libgdx and bullet. When a user taps the mouse I create a new shell object and send it in the direction of the mouse click. However, if the user has tapped the mouse in the direction where the ship is currently moving, the ship catches up to the shells very quickly and can sometimes even get hit by them - simply because the speed of shells and the ship are quite comparable. I think I need to account for ship speed when generating the initial impulse for the shells, and I tried doing that (see "new line added"), but I cannot figure out if what I'm doing is the proper way and if yes, how to calculate the correct coefficient. public void createShell(Vector3 origin, Vector3 direction, Vector3 platformVelocity, float velocity) { long shellId = System.currentTimeMillis(); // hack ShellState state = getState().createShellState(shellId, origin.x, origin.y, origin.z); ShellEntity entity = EntityFactory.getInstance().createShellEntity(shellId, state); add(entity); entity.getBody().applyCentralImpulse(platformVelocity.mul(velocity * 0.02f)); // new line added, to compensate for the moving platform, no idea how to calculate proper coefficient entity.getBody().applyCentralImpulse(direction.nor().mul(velocity)); } private final Vector3 v3 = new Vector3(); public void shootGun(Vector3 direction) { Vector3 shipVelocity = world.getShipEntities().get(id).getBody().getLinearVelocity(); world.getState().getShipStates().get(id).transform.getTranslation(v3); // current location of our ship v3.add(direction.nor().mul(10.0f)); // hack; this is to avoid shell immediately impacting the ship that it got shot out from world.createShell(v3, direction, shipVelocity, 500); }

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  • Why are my 3ds Max .fbx exports huge?

    - by abracadabra1980
    I've made an animation in 3ds Max and want to export it to .fbx and import it into Unity. I've done this once without problems. But this time, my .max file is 2,8MB and my .fbx file came out a huge 630MB! There's nothing wrong with my model: I exported it from a Blender model (to .fbx) and imported it to 3ds max (converted it to an editable poly) to do my rigging and animation. As soon as I import some .bip animations, I get these huge files. Is there a safe way to get smaller file sizes? I don't mind redoing the rigging if I can solve this.

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  • Raycasting mouse coordinates to rotated object?

    - by SPL
    I am trying to cast a ray from my mouse to a plane at a specified position with a known width and length and height. I know that you can use the NDC (Normalized Device Coordinates) to cast ray but I don't know how can I detect if the ray actually hit the plane and when it did. The plane is translated -100 on the Y and rotated 60 on the X then translated again -100. Can anyone please give me a good tutorial on this? For a complete noob! I am almost new to matrix and vector transformations.

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