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

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