decoupled timers from interpreter tick rate

main.cpp

@@ -6,11 +6,11 @@
 #include <SDL2/SDL.h>
 
 #include "BuzzerSDL.hpp"
+#include "CountdownTimerSDL.hpp"
 #include "DisplaySDL.hpp"
 #include "Interpreter.hpp"
 #include "Peripherals.hpp"
 #include "SDL2/SDL_events.h"
-#include "SDL2/SDL_timer.h"
 
 int main(int argc, char* argv[]) {
   if (SDL_Init(SDL_INIT_EVERYTHING) < 0) {
@@ -23,9 +23,13 @@ int main(int argc, char* argv[]) {
   };
 
   BuzzerSDL buzzer(440);
-  DisplaySDL display(1280, 640);
+  int N = 4;
+  DisplaySDL display(128*N, 64*N);
   TestKeypad keypad;
-  chocochip8::Interpreter chip8(1000, display, buzzer, keypad);
+  CountdownTimerSDL delayTimer(60);
+  CountdownTimerSDL soundTimer(60);
+  CountdownTimerSDL displayTimer(20);
+  chocochip8::Interpreter chip8(display, buzzer, keypad, delayTimer, soundTimer);
 
   auto rom = std::vector<char>();
   auto romfile = std::ifstream(argv[1] != NULL ? argv[1] : "/dev/stdin", std::ios_base::in | std::ios_base::binary);
@@ -38,8 +42,6 @@ int main(int argc, char* argv[]) {
 
   SDL_Event event;
   bool done = false;
-  Uint64 start, end;
-  start = SDL_GetTicks64();
   while(!done) {
     while(SDL_PollEvent(&event)) {
       if(event.type == SDL_QUIT) {
@@ -47,16 +49,13 @@ int main(int argc, char* argv[]) {
       }
     }
     chip8.tick();
-    display.updateWindow();
-    SDL_Delay(1);
-    end = SDL_GetTicks64();
-    if(end - start > 3) 
-      std::cout << "Frame took too long: " << end - start << "\n";
-    start = end;
+    if(displayTimer.get() == 0) {
+      display.updateWindow();
+      displayTimer.set(1);
+    }
   }
   
   buzzer.off();
   SDL_Quit();
   return 0;
 }
-