demo 1

demo/inc/state/state_manager.hpp

@@ -0,0 +1,63 @@
+/*
+# ______       ____   ___
+#   |     \/   ____| |___|
+#   |     |   |   \  |   |
+#-----------------------------------------------------------------------
+# Copyright 2022, tyra - https://github.com/h4570/tyra
+# Licenced under Apache License 2.0
+# Sandro Sobczyński <sandro.sobczynski@gmail.com>
+*/
+
+#pragma once
+
+#include <vector>
+#include "./state.hpp"
+#include "./global_state_type.hpp"
+
+namespace Demo {
+
+template <typename StateTypeT>
+class StateManager {
+ public:
+  StateManager(const StateTypeT& initialState) {
+    stateInitialized = false;
+    currentState = initialState;
+  }
+
+  ~StateManager() {
+    for (auto& state : states) {
+      delete state;
+    }
+  }
+
+  const StateTypeT& getCurrentState() const { return currentState; }
+
+  void add(State<StateTypeT>* state) { states.push_back(state); }
+
+  void update() {
+    for (auto& state : states) {
+      if (state->getState() == currentState) {
+        if (state->wantFinish()) {
+          currentState = state->onFinish();
+          stateInitialized = false;
+          break;
+        }
+
+        if (!stateInitialized) {
+          state->onStart();
+          stateInitialized = true;
+        }
+
+        state->update();
+        break;
+      }
+    }
+  }
+
+ private:
+  bool stateInitialized;
+  std::vector<State<StateTypeT>*> states;
+  StateTypeT currentState;
+};
+
+}  // namespace Demo