adds new states and context

main/context.cpp

@@ -0,0 +1 @@
+#include "Context.h"

main/context.h

@@ -0,0 +1,8 @@
+#pragma once
+#include <Arduino.h>
+#include "station.h"
+
+class Context {
+public:
+    Station* stations[4];
+};

main/main.ino

@@ -5,6 +5,7 @@
 #include "station.h"
 #include "statemachine.h"
 #include "state.h"
+#include "states.h"
 
 #define PN532_CS 10
 
@@ -15,7 +16,7 @@ LiquidCrystal lcd(rs, en, d4, d5, d6, d7);
 
 Station stations[4] = { Station(1680767519, "Yellow"), Station(3346823711, "Green"), Station(3569318175, "Pink"), Station(2174777887, "Blue") };
 
-StateMachine stateMachine();
+StateMachine stateMachine(new Startup());
 
 void setup(void) {
   setupNFC();

main/state.h

@@ -1,6 +1,8 @@
 #pragma once
 #include <Arduino.h>
+#include <LiquidCrystal.h>
 #include "station.h"
+#include "context.h"
 
 class Station;
 
@@ -10,7 +12,7 @@ public:
 
     virtual State* pickedUp() { return this; }
     virtual State* putDown(Station* newStation) { return this; }
-    virtual State* update() { return this; }
+    virtual State* update(Context context) { return this; }
 
     virtual void updateDisplay(LiquidCrystal* lcd) { }
 };

main/statemachine.cpp

@@ -1,5 +1,6 @@
 #include "statemachine.h"
 #include "station.h"
+#include "context.h"
 
 StateMachine::StateMachine(State* initialState)
   : currentState(initialState) {}
@@ -25,7 +26,7 @@ void StateMachine::putDown(Station* newStation) {
   updateState(newState);
 }
 
-void StateMachine::update() {
-  State* newState = currentState->update();
+void StateMachine::update(Context context) {
+  State* newState = currentState->update(context);
   updateState(newState);
 }

main/statemachine.h

@@ -1,7 +1,9 @@
 #pragma once
 #include <Arduino.h>
+#include <LiquidCrystal.h>
 #include "state.h"
 #include "station.h"
+#include "context.h"
 
 class StateMachine {
 private:
@@ -14,7 +16,7 @@ public:
 
     void pickedUp();
     void putDown(Station* newSation);
-    void update();
+    void update(Context context);
 
     void updateDisplay(LiquidCrystal* lcd);
 };

main/states.cpp

@@ -40,3 +40,23 @@ WaitingForPickup::WaitingForPickup(Station* currentStation, Station* targetStati
 State* WaitingForPickup::pickedUp() {
   return this;
 }
+
+//-------
+// Startup
+//-------
+
+State* Startup::putDown(Station* newStation) {
+  return new NewTargetFinder(newStation);
+}
+
+//-------
+// NewTargetFinder
+//-------
+
+NewTargetFinder::NewTargetFinder(Station* currentStation) {
+  this->currentStation = currentStation;
+}
+
+State* NewTargetFinder::update(Context context) {
+  return new WaitingForPickup(this->currentStation, context.stations[0]);
+}

main/states.h

@@ -1,5 +1,6 @@
 #pragma once
 #include <Arduino.h>
+#include "context.h"
 #include "state.h"
 #include "states.h"
 #include "station.h"
@@ -26,5 +27,19 @@ private:
   Station* targetStation;
 public:
   WaitingForPickup(Station* currentStation, Station* targetStation);
-  State* pickedUp();
+  State* pickedUp() override;
 };
+
+class Startup : public State {
+public:
+  State* putDown(Station* newSation) override;
+};
+
+class NewTargetFinder : public State {
+private:
+  Station* currentStation;
+public:
+  NewTargetFinder(Station* currentStation);
+  State* update(Context context) override;
+};
+