Import sources from 2011-03-30 iso image

1 files changed, 60 insertions, 0 deletions

diff --git a/sys/src/games/sokoban/animation.c b/sys/src/games/sokoban/animation.c
new file mode 100755
index 000000000..147012b2f
--- /dev/null
+++ b/sys/src/games/sokoban/animation.c
@@ -0,0 +1,60 @@
+#include <u.h>
+#include <libc.h>
+#include <draw.h>
+
+#include "sokoban.h"
+
+void
+initanimation(Animation *a)
+{
+	if (a == nil)
+		return;
+
+	memset(a, 0, sizeof(Animation));
+}
+
+void
+setupanimation(Animation *a, Route *r)
+{
+	if (a == nil || r == nil || r->step == nil)
+		return;
+
+	a->route = r;
+	a->step = r->step;
+	if (a->step < a->route->step + a->route->nstep)
+		a->count = a->step->count;
+	else
+		stopanimation(a);
+}
+
+int
+onestep(Animation *a)
+{
+	if (a == nil)
+		return 0;
+
+	if (a->count > 0 && a->step != nil && a->route != nil) {
+		move(a->step->dir);
+		a->count--;
+		if (a->count == 0) {
+			a->step++;
+			if (a->step < a->route->step + a->route->nstep)
+				a->count = a->step->count;
+			else
+				stopanimation(a);
+		}
+	} else if (a->count > 0 && (a->step == nil || a->route == nil))
+		stopanimation(a);
+	return (a->count > 0);
+}
+
+void
+stopanimation(Animation *a)
+{
+	if (a == nil)
+		return;
+
+	if (a->route != nil)
+		freeroute(a->route);
+	memset(a, 0, sizeof(Animation));
+}