struct spacedot {
// Space dots are harmless background items
// All are active. When one falls off the edge, another is created at the start.
struct spacedot {
// Space dots are harmless background items
// All are active. When one falls off the edge, another is created at the start.
extern float shipx,shipy; // X position, 0..XSIZE
extern float shipdx,shipdy; // Change in X position per tick.
extern float screendx, screendy;
extern float shipx,shipy; // X position, 0..XSIZE
extern float shipdx,shipdy; // Change in X position per tick.
extern float screendx, screendy;