X-Git-Url: https://jasonwoof.com/gitweb/?p=vor.git;a=blobdiff_plain;f=dust.c;h=ab583953ae0bd928ded3f40b5e153f6c9c626ea7;hp=b336696035da9c1cbd7248114d023487d600e551;hb=c1db302b3620bf4e0314867cddf094402d76d2d6;hpb=badd0f9bfc6dad829073e606c1953572ece1b06b

diff --git a/dust.c b/dust.c
index b336696..ab58395 100644
--- a/dust.c
+++ b/dust.c
@@ -4,6 +4,7 @@
 #include "config.h"
 #include "globals.h"
 #include "dust.h"
+#include "float.h"
 #include "mt.h"
 
 struct dust_mote {
@@ -32,22 +33,22 @@ move_dust(void)
 	int i;
 	float xscroll = screendx * t_frame;
 	float yscroll = screendy * t_frame;
+	
 	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].x >= 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);
 	}
 }
 
 void
-draw_dust(SDL_Surface *s)
+draw_dust(void)
 {
 	int i;
-	uint16_t *pixels = s->pixels;
+	uint16_t *pixels = surf_screen->pixels;
 	for(i=0; i<N_DUST_MOTES; i++) {
-		pixels[s->pitch/2*(int)motes[i].y + (int)motes[i].x] = motes[i].color;
+		pixels[surf_screen->pitch/2*(int)motes[i].y + (int)motes[i].x] = motes[i].color;
 	}
 }