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  • Driver inversion

    - by Val
    I have a GUI game, which is driven by user every time it clicks the mouse. Every time user clicks a square on a board, the board state is updated (we re-compute the score, the player to make next move and legal movements it can make) and repainted. Both mouse click, state recomputation and painting are handled in the GUI thread. Now, suppose that I want to train AI to play without GUI. That is, game engine should consume next move by simply calling AI's makeMove function in one thread. This would allow to play millions of games per second automatically. GUI may just screenshot some arbitrary states time after time. How do you switch to this strategy?

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  • Help with selecting objects on a map

    - by Dave
    I have a object selection function by checking the mouse click and getting the relevant object. How ever there is a rare situation where if one object is partially behind the other then both objects are in the given area so im wondering how i can make the game know which one was selected, as currently my method does not know. This is my function that works it out: function getobj(e){ mx = e.pageX - curleft; //mouse click x my = e.pageY - curtop; //mouse click y function searchSprites(sprites, x, y) { var matches = [], i = 0, data = null; for (i = 0; i < spritea.length; ++i) { data = spritea[i].data; if (x > data[0] && y > data[1] && x < data[2] && y < data[3]) { var imageData = ctx2.getImageData(x, y, 1, 1); if(imageData.data[3] !== 0){ return [spritea[i].id]; i = spritea.length; } } } } res = searchSprites(spritea, mx, my); bid = res[0]; if(bid === '1'){ alert('You selected the skyscraper in front!'); }else if(bid === '3'){ alert('You selected the skyscraper behind!'); } } Image of the map: http://i.imgur.com/qcKij.jpg It keeps telling me i clicked the skyscraper behind which is not necessarily what the user is trying to do... how can i improve the accuracy of this ?

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  • Variable-step update() in game loop is falling behind, how can I get around this?

    - by ThatsGobbles
    I'm working on a minimal game engine for my next game. I'm using the delta update method like shown: void update(double delta) { // Update code that uses `delta` goes here } I have a deep hierarchy of updatable objects, with a root updatable that contains several updatables, each of which contains more updatables, etc. Normally I'd just iterate through each of the root's children and update each one, which would then do the same for its children, and so on. However, passing a fixed value of delta to the root means that by the time the leaf updatables are reached, it's been longer since delta seconds that have elapsed. This is causing noticable desyncing in my game, and time synchronization is very important in my case (I'm working on a rhythm game). Any ideas on how I should tackle this? I've considered using StopWatches and a global readable timer, but any advice would be helpful. I'm also open to moving to fixed timesteps as opposed to variable.

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  • change texture at runtime

    - by user1509674
    How can I change the texture at runtime. I have done changing the label(text) at runtime. The following code is used using UnityEngine; using System.Collections; public class switchtime : MonoBehaviour { // Use this for initialization private bool showLabel = false; private bool showLabe2 = false; private bool showLabe3 = false; private bool showLabe4 = false; public void Start() { Invoke("ToggleLabel", 1); Invoke("ToggleLabel2", 3); Invoke("ToggleLabel3",6 ); Invoke("ToggleLabel4", 9); } public void ToggleLabel() { showLabel = !showLabel; } public void ToggleLabel2() { showLabe2 = !showLabe2; } public void ToggleLabel3() { showLabe3 = !showLabe3; } public void ToggleLabel4() { showLabe4 = !showLabe4; } public void OnGUI() { if (showLabel) { GUI.Label(new Rect(300, 200, 100, 20), "Copying window file.."); } if (showLabe2) { GUI.Label(new Rect(40, 40, 100, 20), "Epanding windows file.."); } if (showLabe3) { GUI.Label(new Rect(80, 80, 100, 20), "Installing Feature.."); } if (showLabe4) { GUI.Label(new Rect(100, 100, 100, 20), "Installing Updates"); } } } Now I need to change the GUITexture at runtime. How can do this? Can anybody help me in coding? Here is some changes I made. I worked on changing the gameObject when mouse is placed on it. This is the code I applied and its working for me using UnityEngine; using System.Collections; public class change : MonoBehaviour { // Use this for initialization public GameObject newSprite; private Vector3 currentSpritePosition; void update() { } void Start() { newSprite.renderer.enabled = false; currentSpritePosition = transform.position; //then make it invisible renderer.enabled = false; //give the new sprite the position of the latter newSprite.transform.position = currentSpritePosition; //then make it visible newSprite.renderer.enabled = true; } void OnMouseExit(){ //just the reverse process renderer.enabled = true; newSprite.renderer.enabled = false; } } Now the problem is that, in same code I need to set a time so that the text get loaded without the mouse click. I mean a particular time to load each text one after the another. Here is my screen shot Here I have placed the image one below the another,when the mouse is hovered on it it will change the text from bold to normal text.Changes process stated in (image 2,3).That code I posted is working for me.

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  • How do I correctly multiply an XMMATRIX by a scalar?

    - by user43129
    Using DirectXMath and its XMMATRIX structure in C++ and Direct X 11, how does one multiply that matrix structure by a single float scalar? I want to implement the operation B = A * f; where A and B are XMMATRIX and f is a float. I found all sorts of functions to multiply a matrix by another matrix or a vector. I found all sorts of functions to construct matrices. I could find no scalar multiplication! Why is there no such function? Is there no use case? Did I miss something? How do I implement scalar multiplication?

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  • UnityEngine.Vector2 does not contian a definition for "Set".... using futile

    - by FreshJays
    I am a bit lost, I am using futile and I am just trying to run the demo. But I keep getting UnityEngine.Vector2 does not contian a definition for "Set" in just one class, my using statments are: using System; using UnityEngine; using System.Collections; using System.Collections.Generic; When I look at the documents, I see that Set is a function http://docs.unity3d.com/Documentation/ScriptReference/Vector2.html I am using version 3.4.2 (in futile its happening in just the FAtlas class)

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  • XNA 4.0 - container with content, that can slide (C#)

    - by DijkeMark
    I got an idea, but I got no idea on how to make it. Okay, so here is the deal. I want a container which can contain certain objects (These objects will draw the sprites/graphics). But because of different screen sizes, I want to be able to scale the containers width and height. But I do not want the objects in the container, that go outside of the container, because of the scaling to be visible. Because I want the objects all to be positioned horizontaly to eachother and I want a horizontal sliderbar, so I can slide from left to right within the container. I wonder if anyone could point me in the right direction. Thanks in Advance, Mark

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  • How much memory can i safely use on android?

    - by xastor
    To make my game more fluid, I try to prevent memory allocations during the game I am writing. To that end, I allocate a whopping 16MB of buffers on startup and then use those as I go along. When I check in Eclipse my game now uses 24MB in total, which does not change noticeably during the game. This all works fine on the phone I have now (android 2.3, motorola defy) but I wonder if I'm going to run into problems with this on other phones or tablets that run android 2.2 or higher (which is what I'm aiming for)?

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  • How do I convert a partially transparent image into polygons?

    - by user82779
    I'm using GLEE2D, a level editor allowing me to import images, scale them, rotate them, and position them onto layers and export the data into XML format. However, it does not tell me objects' boundaries. I can calculate them, but only given the original image's polygons. How do I get polygons of objects in a transparent image? An example object (I outlined it): How would I turn the object, knowing the scaled size of the image, into polygons? Is there an algorithm for this? I'll use OpenGL to draw them.

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  • Entity System and rendering

    - by hayer
    Okey, what I know so far; The entity contains a component(data-storage) which holds information like; - Texture/sprite - Shader - etc And then I have a renderer system which draws all this. But what I don't understand is how the renderer should be designed. Should I have one component for each "visual type". One component without shader, one with shader, etc? Just need some input on whats the "correct way" to do this. Tips and pitfalls to watch out for.

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  • If and else condition not working properly in xna [closed]

    - by user1090751
    I am developing chess like game and i wanted to show error message if user try to place any player inside the box which is not empty. For example in certain place if there is empty then the object(2d object) is placed else it should show error message. However in my program it is showing message everytime i.e when i place object on empty place then also it is showing error message. Please see the below code: protected override void Update(GameTime gameTime) { // Allows the game to exit if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed) this.Exit(); // TODO: Add your update logic here for (int i = 0; i < 25; i++) { MouseState mouseState; mouseDiBack = false; mouseState = Mouse.GetState(); if (new Rectangle(mouseState.X, mouseState.Y, 1, 1).Intersects(rect_arr[i])) { background_color_arr[i] = Color.Red; } else { background_color_arr[i] = Color.White; } if (new Rectangle(mouseState.X, mouseState.Y, 1, 1).Intersects(rect_arr[i]) && (mouseState.LeftButton == ButtonState.Pressed)) { if (boxes[i] != "goat" && boxes[i] != "tiger") { place = i; if (turn == "goat") { boxes[i] = "goat"; turn = "tiger"; } else { boxes[i] = "tiger"; turn = "goat"; } } else { errMsg = "This " + i + " block is not empty to place " + turn + ". Please select empty block!!"; } } } base.Update(gameTime); }

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  • What class to use in order to have a number move around the screen?

    - by AllenZ41
    What i am trying to accomplish is have a randomly created number move around the screen but it is touchable. I am planning to have lots of numbers on the screen, so my question is what class is appropriate to use, so I could set a number randomly at run time and display it while it moves around the screen? I was planning the use a TextView, since I want to use a custom font of mine but I think creating a bunch at a time could cause a memory problem and to my understanding they cant move around the screen at runtime.

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  • Help with off-game tasks

    - by peoro
    I love writing video games for fun, and often do that. I noticed, anyway, that most of the times implementing the gameplay itself doesn't take too much time to me (maybe because I already did that plenty times and know what and how to do for most of the things), but when I try to implement off-game stuff I get lost. By off-game I mean what is not gameplay: menus, cutscenes between levels, world map to choose levels, saving and loading status, managing replays ... Only tried to write a few of these a few times, but always failed; that's why I never really completed and distributed a game. Are these common problems? And where should I start to do this? Where could I find some books/guides about such stuff?

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  • Implementing hitbox polygon

    - by Delusional Logic
    I'm creating a shooter, it's still very early, but i'm implementing some polygon hitboxes. So far i have created a polygon class, and i'm looking into how i can hook it onto my player. I'm trying to stay away from having a Tick() function in my polygon class, and I would rather not update the position every tick (it would clutter up my tick functions). At the same time I would really like to have the positions in there somehow (it has a drawing function, and i will be using it for hit detection) How would i go about implementing this polygon object into my entities?

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  • How should i learn to make a game in c++ [on hold]

    - by Foo
    I been having a lot of trouble making a game by myself in c++. I know c++, I know how to implement anything I just don't know how to make all the classes work into a game it just turn into a lot of useless coding and the game never get off the basic drawing, input etc. I read sfml game developemt and the choice the author make are working and I say to myself "I would have never thought of making a scene node class and doing x that way" I just think I can't put my thoughts into working classes and make them communite the right way and make it work. Any help. Sorry I got bad English and I am not a native English speaker. And a grammar edits are welcome and tag fixing.

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  • Vector transform equation explanation

    - by cyberdemon
    I'm trying to understand the maths of moving points in a 3d space by making a game written in C#. I'm looking at this wolfire blog series which explains some basic 3d maths. I've read the first two parts but am stuck on the 3rd. I know it's all really rudimentary stuff but I find Googling for help with equations really hard. The one I'm struggling with is: 0*(0.66,0.75) + 2*(-0.75, 0.66) = (-1.5, 1.3) How can anything multiplied by 0 not be 0? So my question is how does this look in code: x(a,b) + y(c,d) I know it's basic stuff but I just can't see it.

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  • Drawing chunks, and positioning the camera

    - by Troubleshoot
    I've seen many questions and answers regarding how to draw tiled maps but I can't really get my head around it. Many answers suggest either loading the visible part of the map, or loading and unloading chunks of the map. I've decided the best option would be to load chunks, but I'm slightly confused as to how this would be implemented. Currently I'm loading the full map to a 2D array of buffered images, then drawing it every time repaint is called. Q1: If I were to load chunks of the map, would I load the map as a whole then draw the necessary chunk(s), or load & unload the chunks as the player moves along, and if so, how? My second question regards the camera. I want the player to be in the centre of the X axis and the camera to follow it. I've thought of drawing everything in relation to the map and calculating the position of the camera in relation to the players coordinates on the map. So, to calculate the camera's X position I understand that I should use cameraX = playerX - (canvasWidth/2), but how should I calculate the Y position? I want the camera to only move up when the player reaches cameraHeight/2 but to move down when the player reaches 3/4(cameraHeight). Q2: Should I check for this in the same way I check for collision, and move the camera relative to the movement of the player until the player stops moving, or am I thinking about it in the wrong way?

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  • XNA Load/Unload logic (contentmanager?)

    - by Rhinan
    I am trying to make a point-and-click adventure game with XNA, starting off simple. My experience with XNA is about a month old now, know how the classes and inheritance works (basic stuff). I have a problem where I cannot understand how I should load and unload the textures and game objects in the game, when the player transitions to another level. I've googled this 10 times, but all I find is hard coding while I don't even understand the basics of unloading yet. All I want, is transitioning to another level (replacing all the sprites with new ones). Thanks in advance

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  • Capture an area of a game, display it in a small window

    - by steakbbq
    I am looking to make a program that accomplishes some simple goals. I need to be able to specify an area of my screen to have reproduced in a window. Similar to who the windows magnifier works. I also need it to stay on top. I also need it to be transparent. I also need it to be ghost like(mouse clicks go through it) so the application below can be interacted with still. Here is what I am trying to do. What would be the best way to go about it? http://i.imgur.com/0ahi7.jpg

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  • What is w componet [duplicate]

    - by Tifa
    This question already has an answer here: What does the graphics card do with the fourth element of a vector as the final position? 3 answers What is the W component on graphics programming. I read a blog about opengl that says that w must be equal to either 0 or 1 here. But the book I am currently reading has put w component to more than 1 value. So im kinda confuse what does it really do. The book I am reading is OpenGL es a quick start guide.

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  • TexturePacker ignores extensions

    - by The Oddler
    I'm using TexturePacker in one of my games, though when packing a bunch of textures their extension is kept in the data file. So when I want to find a texture I need to search for "image.png" instead of just "image". Is there an option to let texture packer ignore the extensions of my source images in the data file? Solved: So if anyone else wants this, here's the exported I made: https://www.box.com/s/bf12q1i1yc9jr2c5yehd Just extract it into "C:\Program Files (x86)\CodeAndWeb\TexturePacker\bin\exporters\UIToolkit No Extensions" (or something similar) and it should show op as an exporter.

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  • MMORPG Server architecture: How to handle player input (messages/packets) while the server has to update many other things at the same time?

    - by Renann
    Yes, the question is is very difficult. This is more or less like what I'm thinking up to now: while(true) { if (hasMessage) { handleTheMessage(); } } But while I'm receiving the player's input, I also have objects that need to be updated or, of course, monsters walking (which need to have their locations updated on the game client everytime), among other things. What should I do? Make a thread to handle things that can't be stopped no matter what? Code an "else" in the infinity loop where I update the other things when I don't have player's input to handle? Or even: should I only update the things that at least one player can see? These are just suggestions... I'm really confused about it. If there's a book that covers these things, I'd like to know. It's not that important, but I'm using the Lidgren lib, C# and XNA to code both server and client. Thanks in advance.

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  • Cycling through ItemStacks whlie supplying data... LOST [on hold]

    - by user3251606
    Ok so i am working on a plugin for my server that will open and inventory and when closed it will pass items to this class... object of this class is to cycle through the inventory and use a cfg file to define items and prices and then grab that info in a for loop and add it all up... heres what i have thus far... public void sell(Player p, Inventory inv) { ListIterator<ItemStack> it = inv.iterator(); double total = 0; for (ItemStack is : inv) { is = it.next(); if (is.getType() != null) { String type = is.getType().toString(); //short dur = is.getDurability(); String check = ChestSell.plugin.getConfig().getString(type); p.sendMessage("Item Type: " + type); if (check != null) { int amou = is.getAmount(); double value = ChestSell.plugin.getConfig().getDouble(type + ".price"); double tv = amou * value; p.sendMessage("Items in chest: Type " + type + " Ammount: " + amou + " Value: $" + tv); } //TODO Add return Items } } p.sendMessage("You got paid $" + total + " for your items!"); inv.clear(); }

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  • Using bone joints

    - by raser
    I am trying to save bone joints to a file, and am using this format. I was wondering if anyone could clear up a few questions I have why do I need to provide rotation data for the bone, if I already gave it the location? How do I calculate the rotation of each axis if I have the relative location from the parent joint? ** EDIT ** After doing some more digging, I think that it has something to do with quaternions, so, could someone point me to a good resource on using quaternions for bone joints? ** EDIT AGAIN ** I think I've solved it, but I don't understand how it works. I can't seem to find any google results explaining it. I'd appreciate if anyone could send resources explaining it to me.

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  • Android / IPhone / Desktop C++ Game Template

    - by OriginalDaemon
    I was wondering if anyone has come across any articles detailing how to set up a basic game in C++ for use in Android / IPhone / Desktop applications. My thoughts just now are that I would like to make my game as a library and have a different project for each device which just interfaces with this library. You know the kind of thing, bootstrap the program, call some library initialize, load and run routines and occasionally pass some information to the library like input. I was hoping someone would have made a template for this kind of thing but I just had no luck finding one. It seems to me that it's the kind of thing you really only have to do once, so I was hoping someone would have done it for me already.

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