#include "config.h"
#include "globals.h"
#include "dust.h"
+#include "float.h"
#include "mt.h"
struct dust_mote {
}
void
-move_dust(void)
+move_dust(float ticks)
{
int i;
- float xscroll = screendx * t_frame;
- float yscroll = screendy * t_frame;
+ float xscroll = screendx * ticks;
+ float yscroll = screendy * ticks;
+
for(i=0; i<N_DUST_MOTES; i++) {
motes[i].x -= xscroll / (1.3 + motes[i].z);
+ motes[i].x = fwrap(motes[i].x, XSIZE);
+
motes[i].y -= yscroll / (1.3 + motes[i].z);
- if(motes[i].y >= XSIZE) motes[i].x -= XSIZE;
- else if(motes[i].x < 0) motes[i].x += XSIZE;
- if(motes[i].y > YSIZE) motes[i].y -= YSIZE;
- else if(motes[i].y < 0) motes[i].y += YSIZE;
+ motes[i].y = fwrap(motes[i].y, YSIZE);
}
}