--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/back.c	Tue Dec 07 15:39:45 2010 +0900
@@ -0,0 +1,35 @@
+#include <stdlib.h>
+#include <SDL.h>
+//#include "libps.h"
+#include "back.h"
+#include "debug.h"
+
+//GsBOXF *boxs, box[BOX_NUM];
+
+//BOXDT boxdt[BOX_NUM];
+
+void Back(GsOT * j)
+{
+    int i1;
+
+    for (i1 = 0; i1 < BOX_NUM - 1; i1++) {
+	boxdt[i1].y += boxdt[i1].s;
+	if (boxdt[i1].y > 240) {
+	    boxdt[i1].x = rand() % 320;
+	    boxdt[i1].y = 0;
+	}
+    }
+
+    boxs = box;
+    for (i1 = 1; i1 < BOX_NUM - 1; i1++, boxs++) {
+	boxs->attribute = 0;
+	boxs->x = boxdt[i1].x;
+	boxs->y = boxdt[i1].y;
+	boxs->w = 1;
+	boxs->h = 1;
+	boxs->r = rand() % 256;
+	boxs->g = rand() % 256;
+	boxs->b = rand() % 256;
+	GsSortBoxFill(boxs, j, 0);
+    }
+}