added constructor to timer and implemented basic ncurses again

cpp/ui/ncurses/hw/hwcurses.cpp

@@ -1,10 +1,80 @@
+#include <chrono>
+#include <cstdio>
+#include <ctime>
+#include <functional>
+#include <iostream>
 #include <ncurses.h>
+#include <unistd.h>
+#include <thread>
+
+// dynamic, let's for loop hello
+/* let's add a timer
+   function "subscribes" to a function that omits a signal whenever a second has pased
+*/
+
+/*
+  todo
+  figure out namespaces, using, and auto
+  formalize timer struct
+  read about std function and std bind
+  try to do with objects / classes instead
+  centralize into event sender and subscriber
+*/
+
+struct mysecondsdisplay {
+  int intervalcount = 10;
+  void myupdatedisplay() {
+    intervalcount -= 1;
+    mvprintw(intervalcount, intervalcount, "hello %d", intervalcount);
+    refresh();
+    if (intervalcount < 1) {
+      intervalcount = 10;
+    }
+  }
+};
+
+//calls callbackfunc on specified interval based on accumulated deltatime
+class timer {
+public:
+  std::function<void()> callbackfunc;
+
+  timer(size_t interval_input, std::function<void()> callback): callbackfunc(callback), time_interval(interval_input){}
+
+  //callbackfunc once enough time has accumulated
+  void updatetime(double DeltaTime) {
+    accumulator += DeltaTime;
+    if (accumulator >= time_interval) {
+      accumulator -= time_interval;
+      callbackfunc();
+    }
+  }
+private:
+  double accumulator = 0;
+  size_t time_interval = 1; // only display every 1 seconds
+};
 
 int main() {
   initscr();
-  move(11, 26);
-  printw("Hello curses");
+  nodelay(stdscr,FALSE);
   refresh();
+  // printf("verification\n");
+  
+  auto starttime = std::chrono::system_clock::now(); // initial starttime
+  mysecondsdisplay secdisp;
+  timer clocktimer(1, [&]() { secdisp.myupdatedisplay();} );
+
+  //calculate delta between current and previous time
+  while (true) {
+    auto currenttime = std::chrono::system_clock::now();
+    std::chrono::duration<double> myDeltaTime = currenttime - starttime;
+    double dtime = myDeltaTime.count();
+
+    clocktimer.updatetime(dtime);
+    
+    starttime = currenttime;
+    std::this_thread::sleep_for(std::chrono::milliseconds(250));
+  }
+
   getch();
   endwin();