Started implementing schedule

Scheduled entities move downward every beat, although they have a speed that is twice the bpm, so essentially they move every other beat?

Broke the simulation loop such that different parts run independently -- made it horizontal rather than vertical.

Encapsulated the grid cache so that more than one position field could be cached. This is used to make sure that an entity can't move into a space that something else is already moving into.

Fixed issue where an entity could move perpendicularly into the space an entity was moving out of.

1 files changed, 44 insertions, 0 deletions

@@ -0,0 +1,44 @@
+#ifndef SCHEDULE_H_EF7B9D12
+#define SCHEDULE_H_EF7B9D12
+
+class Schedule {
+public:
+
+  explicit Schedule(
+    size_t bpm) :
+      bpm_(bpm),
+      tick_(60.0 / static_cast<double>(bpm_))
+  {
+  }
+
+  size_t getBPM() const
+  {
+    return bpm_;
+  }
+
+  void accumulate(double dt)
+  {
+    accum_ += dt;
+  }
+
+  bool step()
+  {
+    if (accum_ > tick_)
+    {
+      accum_ -= tick_;
+
+      return true;
+    } else {
+      return false;
+    }
+  }
+
+private:
+
+  size_t bpm_;
+  double tick_;
+  double accum_ = 0.0;
+
+};
+
+#endif /* end of include guard: SCHEDULE_H_EF7B9D12 */