Begin refactor.

src/epoch/epoch.h

@@ -6,7 +6,40 @@
  */
 
 #pragma once
-#include <dawn/dawn.h>
+#include "../libs.h"
+
+#define EPOCH_FIXED_STEP 0.016f
+#define EPOCH_SMALLEST_STEP 0.001f
+
+typedef struct {
+  /**
+   * Current time (as a float of seconds since game start).
+   * 
+   * When time is initialized this will start at a fixed value of 2/60ths of a 
+   * second, regardless of what engine the game is running.
+   * 
+   * This is to avoid any divide by zero errors.
+   */
+  float current;
+
+  /**
+   * Last Time (as a float of seconds since the game start).
+   * 
+   * This value will start at 1/60th of a second regardless of engine the game
+   * is running on to avoid divide by zero errors.
+   */
+  float last;
+
+  /**
+   * Varying timestep that occured since the last frame. 
+   */
+  float delta;
+
+  /**
+   * Fixed timestep that is not affected by framerate but remains consistent.
+   */
+  float fixedDelta;
+} epoch_t;
 
 /**
  * Initializes the epoch time tracking.