Refactoring structs Part 1

src/epoch/epoch.c

@@ -0,0 +1,26 @@
+/**
+ * Copyright (c) 2021 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "epoch.h"
+
+void epochInit(epoch_t *epoch) {
+  epoch->delta = EPOCH_FIXED_STEP;
+  epoch->last = EPOCH_FIXED_STEP;
+  epoch->current = EPOCH_FIXED_STEP + EPOCH_FIXED_STEP;
+}
+
+void epochUpdate(epoch_t *epoch, float platformDelta) {
+  platformDelta = mathMax(
+    mathMin(platformDelta, EPOCH_FIXED_STEP),
+    0
+  );
+
+  epoch->last = epoch->current;
+  epoch->current = epoch->current + platformDelta;
+  epoch->delta = epoch->current - epoch->last;
+  epoch->fixedDelta = EPOCH_FIXED_STEP;
+}

src/epoch/epoch.h

@@ -0,0 +1,24 @@
+/**
+ * Copyright (c) 2021 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include <dawn/dawn.h>
+
+/**
+ * Initializes the epoch time tracking.
+ * 
+ * @param epoch Epoch to initialize.
+ */
+void epochInit(epoch_t *epoch);
+
+/**
+ * Ticks the current epoch time.
+ * 
+ * @param epoch Epoch to update.
+ * @param platformDelta The delta step between frames from the platform engine.
+ */
+void epochUpdate(epoch_t *epoch, float platformDelta);