This question is kind of theoretical. I cannot really find the most appropriate ratio for a space shooter. Explained below:
What is the best ratio between
spawn enemies: EveryXseconds
and the bullet speed they have?
What am looking for is the best relationship between the two that is the time of spawning and the speed.
Say I start with the speed of 50 in which enemies are falling down. How often should be the enemy spawned to make it engaging?
BTW, what speed would you consider as a baseline for this kind of game?
Then every 10 points I increment the speed by adding 25 and I recon i should do something with the spawnTime (EveryXSeconds).
Thus what should be the baseline for the seconds of spawning the enemies and their bullet speed? What ratio should I maintain between the two to make the game run well while incrementing the speed of enemies?