2d

i' m little bit confused about few things: Example code,that shows my problem,this isn't compilable // image private BufferedImage image; private Graphics2D graphic; private changeImage; . . . //thread loop while (running) { . . . render(); Graphics showGraphic = getGraphics(); showGraphic.drawImage(image, 0, 0, null); showGraphic.dispose(); } public void render(){ if(changeImage == 1) graphic.drawImage(ImageLoader.TREE, 0, 0, null); else if(changeImage == 2){ graphic.drawImage(ImageLoader.HOUSE, 0, 0, null); . . . graphic.fillRect(50,60,30,40); } } I create an global object Graphic2D and i

Question is simple so, no codes! If someone knows Box2D and SDL2, then, please tell me how to wrap SDL_Rect with b2body. Ofcourse, it requires to know the conversion of metre to pixel and vice versa. This is because Box2D measures distance in metres. Can you give me a simple expression or function to convert metres(of Box2D) to pixels or pixels to metres(of Box2D)? Can you give me a simple expression or function to convert metres(of Box2D) to pixels or pixels to metres(of Box2D)? Unfortunately, this isn't as simple as it sounds, for us. Because, if your game is on worms, then your game world

I want to dynamically allocate 1 dimension of a 2D array (the other dimension is given). Does this work: int NCOLS = 20; // nrows = user input... double *arr[NCOLS]; arr = (double *)malloc(sizeof(double)*nrows); and to free it: free(arr) Not quite -- what you've declared is an array of pointers. You want a pointer to an array, which would be declared like this: double (*arr)[NCOLS]; Then, you'd allocate it like so: arr = malloc(nrows * sizeof(double[NCOLS])); It can then be treated as a normal nrows by NCOLS 2D array. To free it, just pass it to free like any other pointer. In C, there's no

is there a nice way to calculate the position of a path (CGPath or UIBezierPath) at a given time (from 0 to 1)? Using CAShapeLayer for example, one can create an animated stroke end. I want to know the position of that stroke end at arbitrary times. Thanks in advance, Adrian You can definitely base your approach on the CADisplayLink and a tracking layer. However, if you don't mind doing a little bit of math on your own, the solution is not too complicated. Plus, you wont have to depend on setting up a display link and extra layers. In fact, you dont even have to depend on QuartzCore. The

I'm working on a little 2D platformer/fighting game with C++ and SDL, and I'm having quite a bit of trouble with the collision detection. The levels are made up of an array of tiles, and I use a for loop to go through each one (I know it may not be the best way to do it, and I may need help with that too). For each side of the character, I move it one pixel in that direction and check for a collision (I also check to see if the character is moving in that direction). If there is a collision, I set the velocity to 0 and move the player to the edge of the tile. My problem is that if I check for

I'm really sorry if anything like this has been posted here before but I couldn't find anything, I'm kinda new to the site still! So for a while now I've been learning a bit about game development through html5 and javascript and I stumbled upon making tileset maps, I now have a tileset and an 2D array that I want to put certain tiles in (the number varies between 6 and 10 in this case). I figured it could be a cool function to make the map choose between a small set of similar tiles so I don't have to specifically number every tile in the array(just define the type) The method I have