initial commit: wip

particle.c

@@ -0,0 +1,12 @@
+#include "particle.h"
+#include <stdlib.h>
+
+struct particle *
+particle_common_new(int left_margin, int right_margin)
+{
+    struct particle *p = malloc(sizeof(*p));
+    p->parent = NULL;
+    p->left_margin = left_margin;
+    p->right_margin = right_margin;
+    return p;
+}