1
vote
1answer
29 views

XY Location scaling with varying density screens

I have a phone with resolution H=1280,W=720,Density=2 I have a tablet with resolution H=1216,W=800,Density=1.331 I drew a rectangle on my phone with corners Left,Top (-1.6,1.55), Right,Bottom ...
2
votes
4answers
235 views

Implementing frame-independent friction

So I'm not looking for anything realistic like a physics engine, just want to say that first. I'm working on a simple top-down game and I'm trying to get friction working with deltaTime. This was my ...
1
vote
3answers
349 views

Algorithm to zoom a plotted function [closed]

I'm making a game in android and I need plot a function, my algorithm is this: @Override protected void onDraw(Canvas canvas) { float e = 0.5f; //from -x axis to +x evaluate ...
11
votes
8answers
2k views

Converting a 2D curve into points for data storage

I’ve created an algorithm which converts any curve i.e. path into minimum number of points so that I can save it into a file or database. The method is simple: it moves three points in equal steps ...
1
vote
4answers
190 views

Vectors and corners of squares

I am having some problems with some vector math. Imagine a square and coming from each corner of the square is an invisible vector, which starts at the square's centre and ends at the edge of the ...
4
votes
2answers
3k views

How to calculate shot angle and velocity to hit a moving target?

I am developing a 2D Android game and I am making an aiming algorithm for AI projectiles to hit enemies either following a path, or free moving. At the moment it just calculates where the target will ...
1
vote
2answers
423 views

How to keep the questions in Math game application ?

I would like to create a simple Math game application in android phone but I don't know what kind of data storage which I should use to keep the sets of numeric for the questions. At this time, I am ...
1
vote
1answer
658 views

Relating a point after an image is panned and zoomed

For Android, let's say you have a image of a map that you draw inside your view. On this map there are many, many "hot spot" locations where you want your user to be able to select. Given that there ...
6
votes
3answers
4k views

building a game for different resolution phones

I am starting some tests for building a game on the Android program. So far everything is working and seems nice. However I do not understand how to make sure my game looks correct on all phones as ...