i am creating a game using pygame and python.
i have develoved a square that goes up and down, flows a path.
how do i set a particular path for the square?
My question is how do i take this image and convert it into a path equation the square follows?
Any other idea to use this or any track from an image is appreciated.
i tried imread() of matlab and many other things. i dont think grayscale applies here. i even tried superimposing it on a grid and plot points along the track.
i am out of ideas and from all the vedios i have seen i am missing something very basic here i think. any help?
I have been working on a python program using opencv that will help the user solve the Rubik's Cube. The most important & complicated part is identifying the cube to read the value of each of its sides.
I have had a decent amount of luck so far but am wanting to change the processing pipeline a little. I think it would make sense to isolate the cube from its background before trying to detect the (rounded) square stickers and read their colors.
Attached is an example of the sort of frame we would be dealing with. I'm not sure what the best method for isolating the cube from the background would be. I have tried background selection, which seemed somewhat promising (though the mask was very grainy & blotchy). But I am also wondering if it would make more sense to use something like object detection.
I have considered just making a "dumb" crop which makes the user align the cube within a reticle. However, I would prefer a more elegant solution and don't mind spending the additional time that entails.
Edit: maybe the mild bokeh could be used to identify the background, or is it too miniscule to detect consistently?
Thanks for any help!
How to create flood fill figure animation using python?
I saw this image online and was wondering how to go about these types of animation. I think this is a very useful technique that can be used in maps, presentations, etc and was curious about it.
The image:
http://i.imgur.com/zaSxkLI.gif
I Researched these questions:
Flood Fill in Python
How to flood-fill part of a bitmap enclosed by a black border with my chosen color?
Python: floodfill algorithm for minesweeper
Flood Fill Algorithm Python
Looked at this resource:
http://inventwithpython.com/blog/2011/08/11/recursion-explained-with-the-flood-fill-algorithm-and-zombies-and-cats/
Questions:
Can you point me to working code that does this type of exercise?
Which libraries are considered standard to use now?
How does the logic behind the fill exercise work?
Can you point me to more information/resources (maybe the docs for the libraries)
How could I integrate this concept with matplotlib? Can you point me to an example?
Thank you so much!
I have a pygame program where there's a face in the center. What I want the program to do is have a bunch of objects on the screen, all irregular. Some would be circles, others would be cut-out pictures of objects like surf boards, chairs, bananas, etc. The user would be able to drag the objects around, and they'd collide with each other and the face in the center, and so be unable to pass through them. Could anyone show me how I would do this? Thanks!
-EDIT- And by not be able to pass through, I mean they'd move along the edge of the object, trying to follow the mouse.
What you are looking for is functionality usually provided by a so-called physics engine. For very basic shapes, it is simple enough to code the basic functionality yourself. (The simplest case for 2D shapes is the collision detection between circles).
Collision detection gets pretty hard pretty quickly, especially if you want to do it at a reasonably fast rate (such as you would need for the sort of project you are describing) and also especially if you are dealing with arbitrary, non-regular shapes (which your description seems to indicate). So, unless you are interested in learning how to code an optimized collision detection system, I suggest you google for python physics engines. I have never used any, so I can't personally recommend one.
Good luck!
So I've been making a game using Python, specifically the PyGame module. Everything has been going fairly well (except Python's speed, am I right :P), and I've got a nice list of accomplishments from this, but I just ran into a... speedbump. Maybe a mountain. I'm not to sure yet. The problem is:
How do I go about implementing a Camera with my current engine?
That probably means nothing to you, though, so let me explain what my current engine is doing: I have a spritesheet that I use for all images. The map is made up of a double array of Tile objects, which fills up the display (800 x 640). The map also contains references to all Entity's and Particles. So now I want to create a a camera, so that the map object can be Larger than the display. To do this I've devised that I'll need some kind of camera that follows the player (with the player at the center of the screen). I've seen this implemented before in games, and even read a few other similar posts, but I need to also know Will I have to restructure all game code to work this in? My first attempt was to make all object move on the screen when the player moves, but I feel that there is a better way to do this, as this screws up collision detection and such.
So, if anyone knows any good references to problems like this, or a way to fix it, I'm all ears... er.. eyes.
Thanks
You may find this link to be of interest.
In essence, what you need to do is to distinguish between the "actual" coordinates, and the "display" coordinates of each object.
What you would do is do the bulk of the work using the actual coordinates of each entity in your game. If it helps, imagine that you have a gigantic screen that can show everything at once, and calculate everything as normal. It might help if you also designed the camera to be an entity, so that you can update the position of your camera just like any other object.
Once everything is updated, you go to the camera object, and determine what tiles, objects, particles, etc. are visible within the window, and convert their actual, world coordinates to the pixel coordinates you need to display them correctly.
If this is done correctly, you can also do things like scale and otherwise modify the image your camera is displaying without affecting gameplay.
In essence, you want to have a very clear distinction between gameplay and physics logic/code, and your rendering/display code, so your game can do whatever it wants, and you can render it however you want, with minimal crossover between the two.
So the good news is, you probably don't need to change anything about how your game itself works. The bad news is, you'll probably have to go in and rewrite your rendering/drawing code so that everything is drawn relative to the camera, not to the world.
Since I can't have a look into your code, I can't assess how useful this answer will be for you.
My approach for side scroller, moveable maps, etc. is to blit all tiles onto a pygame.Surface spanning the dimensions of the whole level/map/ etc. or at least a big chunk of it. This way I have to blit only one surface per frame which is already prepared.
For collision detection I keep the x/y values (not the entire rect) of the tiles involved in a separate list. Updating is then mainly shifting numbers around and not surfaces anymore.
Feel free to ask for more details, if you deem it useful :)