i have been searching for hours, and cant seem to find an answer
i have a chess board and its made of 64 imageViews (8X8) and i want to move one pawn to another square, and cant seem to find the way to get the image resource (which is a png image) and set it on the empty square. i saw answers to this question using .setTag, but i am already using it to define the position of the imageView on the board (for example the tag could be "4,4")
a part of my code below:
it shows the imageView and how im setting the resource.
i have another image view and i want to get the resource from the first one and onto the other one
img.setBackgroundResource(R.drawable.white_pawn_on_beige);
thanks in advance.
If you think you need to do this, you're architecting your program incorrectly. You should have a model that knows what every square on the board has as a piece (if any). You should also have a function that can map a piece (or lack of a piece) to a resource id. You should simply update that model when a move is made, then redraw any effected squares from the model. You should not be using your views as state. Moving to an architecture like this should both make it easier to write and to test (instead of a complicated test involving views, you're testing a function that updates the model, a function that maps the model to a resource for a given square, and a function that updates a model- no views involved).
Related
I am making a game similar to Risk and struggling to find a way to implement the interaction with countries.
The basic idea is to create custom objects that are not rectangular and be able to change their colour by clicking them, highlight them with mouseover, or as the game progresses.
How would I go about having highlight-able countries that can be selected? The problem with sprites is their bounding boxes are rectangular, and if I define Box2D vertices and make polygons it gets really messy. Also, there are a lot of countries so a lot of the platformer style solutions don't fit.
How should I also change the colours of what is selected? Would it be best to have an individual sprite for every country and keep switching between them or is there a better way?
One way is to use polygons like you tried but I wonder why and what you mean it got messy. There are tools out there that let you draw vertices over a image and let you export that. You probably need to clean up the data a bit and import it into your app. It's also not very hard to make such an app yourself, have it import your image and start drawing and export to your favorite format. The more detailed you draw your polygons the more detail you get in your.
Perhaps an easier solution would be to use the opacity of each image of a country. Each country gets it's own image and you need to overlap the bounding rectangles to line them all up. When your mouse is hovering over one or more of these bounding boxes you check if the mouse is over a transparent pixel. If it is transparent you are obviously not hovering over the actual country. Some things to consider:
I would create the game in a pixel perfect manner so each pixel of your images is translated to a single pixel of the screen your outputting to.
To align your whole map I would create one big world map in your drawing application. Then save each country but remain the canvas size of the complete map. When packing these images with the LibGDX TexturePacker remove the whitespace (transparent pixels) and you will get an offset in your atlas. You can use this offset for each country to line them up and save precious texture space by removing all that whitespace.
Always check for a simple collision first before diving in deeper.
If you want to have "hover" functionality then don't do pixmap = texture.getTextureData().consumePixmap() each update since it's rather expensive. You might be better off creating your own 2D boolean array that represents the clickable area when you initialize the country object.
I'm trying to build a text editing app that allows the user to edit text using different fonts, colors, sizes, rotations, etc. I'm working on a feature that is supposed to curve the text but I've got no clue how to do it. I found this StackOverflow post HERE and searching through the comments, I found this post HERE but for what I'm trying to achieve, that is how I want it to end up. What I want it to do is start as a normal line of text and then based on the value of a seekbar I want it to curve, until it reaches the MAX value at which point it's in a circle (as seen in the second link). If you can help me figure out how to do this I would really appreciate it. I figure it's going to use path.addArc or something like that but I'm not sure.
Thank you
PS
I'll post the images below just in case you don't want to go look at the links
You can draw your circle text in your custom view, use canvas function drawTextOnPath(String text,Path path, float hOffset, float vOffset,Paint paint), and then construct the path by yourself requirement.
Here is a scenario on which i done a lot of research on google but hopeless. the scenario is, i am going to develop a 2D game in which i want to use multiple backgrounds and i want to translate them as they are moving forward, it must look like one background is near and translating/moving fast and the other background is a bit far and translating/moving a little slow. the nearer background have almost full intensity and the farer background have a bit low intensity. you can say they have different transparency levels. the question is, how can i get this task done or is this possible to use multiple backgrounds.
any suggestion will be appreciated.
as an example, see the image of BADLAND game bellow.
I think as far as I got your question you want to put two or more images one over another. I mean if you are trying to overlap the multiple backgrounds and asking for it yes it can be done easily.
What you need to do is to use the FrameLayout. as
"FrameLayout represents a simple layout for the user interface of
Android applications. It is usually used for displaying single Views
at a specific area on the screen or overlapping its child views."
and then you can implements the animations on them and translate them You can find different types of translation over them.
Here is all about using the frame layout frameLayout1 framelayout2 and for animations and translation here are links. link , link2 , link3
Finally decided to learn 2d (for now) java game programming. Am working on a game that has a central object that the user will guide with the directional keys. I have that working perfectly, cobbled together from examples and tutorials I've found.
I'm using this method of generating colored background tiles but I'd like to scroll (move) the background as the primary object the user is moving reaches the window edges. I'm fairly sure I can make that work, I have the basics in place, but I can't find a good tutorial or actual demonstration of a way to continue to generate additional tiles to fill in the space the user is moving too.
At this point, this is purely background and I have no need to save the exact tiles generated - but eventually I would like this ability. I'm sure I'll have to find a way to divide the areas into "chunks" like minecraft does.
But for now - how can I continually fill in the area with the same pattern? Or is there a better way to create the tiles that's better for this?
Instead of a solid color you can use a TexturePaint, as shown here. Let your model contain a reference to the desired texture for each grid cell. Let your view use a flyweight pattern for rendering, as illustrated here.
I am facing an strange issue not sure why this is happening.
I have a Java based Activity which has a LinearLayout. This LinearLayout consists of two GLSurfaceView. All the associated methods of GLSurfaceView like OnDraw, SurfaceChanged etc are moving call down to JNI layer. Inside the JNI layer I am drawing a cube using OpenGLES. I have also created a touch listener and have associated it with first GLSurfaceView. Once I get a touch event I move the call to JNI layer and randomly rotate the first cube.
Problem is when I rotate my first cube both the cubes rotates at exactly same angle. I have debugged this issue for last four hours and I am pretty sure there is nothing wrong in my logic. But for some unknown reason when I make change in one GLSurfaceView other cube changes automatically.
Any ideas? Similar issues? Guess?
Update
I am using same context i.e. my activity for both GLSurfaceView. Basically I have a class inside C++ which draws cube through opengles. Now I am successfully creating two cubes and displaying them simultaneously. Both cubes have different texture on them which I am passing via Java layer. My c++ class has a method which randomly rotates the cube. Problem is if I call method of one cube to rotate it other automatically rotates at same angle no make what I do.
Without your code, I'd guess you are initializing your GLSurfaceView's using the same context. When sharing a context changing one will change the other because they will share the same GL10 instance in the Renderer. I don't program in android, but in general you'd use multiple "viewports" to display different things.
Say that your first GLSurfaceView is on the first left side of your screen, and the second is on the second right half. One idea is to check what side the coordinates x, y of the motionEvent belongs to. And then pass rotation and translation accordingly.
Issue solved there was one logical mistake in my code
Sorry for inconvenience