File manipulation & speed

Blitz3D Forums/Blitz3D Beginners Area/File manipulation & speed

I think that i have to use two array to store the data...because in my "create_alien" function i use to modify the x and y value accordingly to the path that i previously read from file...it's why i lay the file open.
I also noticed that with 20 or more enemy onscreen my speed comes down to a crawl....it's because i use floats for movements or because i use many sin cos ecc ecc?