Add tutorial models

examples/tutorial_classic/atomic_ext.py

@@ -0,0 +1,53 @@
+### Model
+from pypdevs.DEVS import *
+from pypdevs.infinity import INFINITY
+
+class TrafficLight(AtomicDEVS):
+    def __init__(self):
+        AtomicDEVS.__init__(self, "Light")
+        self.state = "green"
+        self.elapsed = 0.0
+        self.observe = self.addOutPort("observer")
+        self.interrupt = self.addInPort("interrupt")
+
+    def intTransition(self):
+        state = self.state
+        return {"red": "green",
+            "yellow": "red",
+            "green": "yellow"}[state]
+
+    def timeAdvance(self):
+        state = self.state
+        return {"red": 60,
+            "yellow": 3,
+            "green": 57,
+            "manual": INFINITY}[state]
+
+    def outputFnc(self):
+        state = self.state
+        if state == "red":
+            return {self.observe: "show_green"}
+        elif state == "yellow":
+            return {self.observe: "show_red"}
+        elif state == "green":
+            return {self.observe: "show_yellow"}
+
+    def extTransition(self, inputs):
+        inp = inputs[self.interrupt]
+        if inp == "manual":
+            return "manual"
+        elif inp == "auto":
+            if self.state == "manual":
+                return "red"
+
+### Experiment
+from pypdevs.simulator import Simulator
+
+model = TrafficLight()
+sim = Simulator(model)
+
+sim.setVerbose()
+sim.setTerminationTime(500)
+sim.setClassicDEVS()
+
+sim.simulate()