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