new ruler with chess and poetesses

1 files changed, 49 insertions, 0 deletions

diff --git a/map/alfa_animation_task.cpp b/map/alfa_animation_task.cpp
new file mode 100644
index 0000000000..0370758b0c
--- /dev/null
+++ b/map/alfa_animation_task.cpp
@@ -0,0 +1,49 @@
+#include "alfa_animation_task.hpp"
+
+#include "framework.hpp"
+
+AlfaCompassAnim::AlfaCompassAnim(double start, double end, double timeInterval, double timeOffset, Framework * f)
+  : m_start(start)
+  , m_end(end)
+  , m_current(start)
+  , m_timeInterval(timeInterval)
+  , m_timeOffset(timeOffset)
+  , m_f(f)
+{
+}
+
+bool AlfaCompassAnim::IsHiding() const
+{
+  return m_start > m_end;
+}
+
+float AlfaCompassAnim::GetCurrentAlfa() const
+{
+  return m_current;
+}
+
+void AlfaCompassAnim::OnStart(double ts)
+{
+  m_timeStart = ts;
+  base_t::OnStart(ts);
+  m_f->Invalidate();
+}
+
+void AlfaCompassAnim::OnStep(double ts)
+{
+  base_t::OnStep(ts);
+  double elapsed = ts - (m_timeStart + m_timeOffset);
+  if (elapsed >= 0.0)
+  {
+    double t = elapsed / m_timeInterval;
+    if (t > 1.0)
+    {
+      m_current = m_end;
+      End();
+    }
+    else
+      m_current = m_start + t * (m_end - m_start);
+  }
+
+  m_f->Invalidate();
+}