era.mi/src/era/mi/logic/components/Clock.java

   1 package era.mi.logic.components;
   2
   3 import java.util.List;
   4
   5 import era.mi.logic.timeline.Timeline;
   6 import era.mi.logic.timeline.TimelineEvent;
   7 import era.mi.logic.timeline.TimelineEventHandler;
   8 import era.mi.logic.types.Bit;
   9 import era.mi.logic.wires.Wire;
  10 import era.mi.logic.wires.Wire.ReadEnd;
  11 import era.mi.logic.wires.Wire.ReadWriteEnd;
  12
  13 public class Clock extends Component implements TimelineEventHandler
  14 {
  15         private boolean toggle = false;
  16         private ReadWriteEnd out;
  17         private int delta;
  18
  19         /**
  20          *
  21          * @param out   {@link Wire} the clock's impulses are fed into
  22          * @param delta ticks between rising and falling edge
  23          */
  24         public Clock(Timeline timeline, ReadWriteEnd out, int delta)
  25         {
  26                 super(timeline);
  27                 this.delta = delta;
  28                 this.out = out;
  29                 addToTimeline();
  30         }
  31
  32         @Override
  33         public void handle(TimelineEvent e)
  34         {
  35                 addToTimeline();
  36                 out.feedSignals(toggle ? Bit.ONE : Bit.ZERO);
  37                 toggle = !toggle;
  38         }
  39
  40         public ReadWriteEnd getOut()
  41         {
  42                 return out;
  43         }
  44
  45         private void addToTimeline()
  46         {
  47                 timeline.addEvent(this, delta);
  48         }
  49
  50         @Override
  51         public List<ReadEnd> getAllInputs()
  52         {
  53                 return List.of();
  54         }
  55
  56         @Override
  57         public List<ReadWriteEnd> getAllOutputs()
  58         {
  59                 return List.of(out);
  60         }
  61 }