I had coded a simple click game with Python-kivy to android.
You should click dots which are popping out randomly at screen. I set their size 20px to 60px as your level. But it seems when I try on different device screen resolution change the hardness of game. low resolution phones have higher change. I also look at some game (2048 - piano tiles etc) they are also have the same problem.
Should I keep ignore the resolution or try to solve this problem? If so how?
I can't off code itself but i can offer the theory behind it with some pseudo code
First of all some theory: Screens have a resolution this is mesured in pixels so for example, 1920*1080 on a screen of 10 inches, this is more pixels per inch so 20 pixels on this screen would take up less space then 20 pixels on a 40inch screen, because of this some math before the game starts is needed.
int width = getScreenWidth(); int height = getScreenHeight(); int dispWidth = getDeviceWidth(); int dispHeight = getDeviceWidth(); int PPI = caclulate the PPI with algorithm You would then need to change some code to work out the pixels needed to fix say 1/2 inch diameter circle. which would be easy enough.
Another way to do it is looking on the Developer Documentation https://developer.android.com/reference/android/util/DisplayMetrics.html
it lists the size of the screens on different densities and then set variables according to that, It's been a few years since I've done any work with android but i believe you can also set pixel density on a canvas too.
To make sizes independent of screen resolution/pixel density, you need to use kivy.metrics. The dp function gives you a screen independent way to specify distance. The sp function does this as well as scales based on the user font preference. See https://kivy.org/docs/api-kivy.metrics.html for more info. The following should display the same size on different screens:
from kivy.app import App from kivy.uix.widget import Widget from kivy.uix.button import Button from kivy.uix.textinput import TextInput from kivy.metrics import dp, sp class Test(Widget): def __init__(self, **kwargs): super(Test, self).__init__(**kwargs) wid = Button() wid.size = dp(200), dp(50) wid.text = "test" wid.font_size = sp(20) self.add_widget(wid) class MyApp(App): def build(self): return Test() if __name__ == '__main__': MyApp().run() To make widget size that is independent to screen resolution you need to know the screen resolution first look at this
from kivy.core.window import Window //import that first class winApp(App): size_x = NumericProperty(0) size_y = NumericProperty(0) def on_start(self): window_sizes=Window.size self.size_x , self.size_y = window_sizes print(self.size_x, self.size_y) After getting the size of any screen of any device you can do anything Example
wid = Button() wid.size = self.size_x, self.size_y wid.text = "test" wid.font_size = sp(20) `
