archivemuh

src/time/CMakeLists.txt

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+# Copyright (c) 2025 Dominic Masters
+# 
+# This software is released under the MIT License.
+# https://opensource.org/licenses/MIT
+
+# Sources
+target_sources(${DUSK_TARGET_NAME}
+  PRIVATE
+    time.c
+)

src/time/time.c

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+/**
+ * Copyright (c) 2025 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "time.h"
+#include "util/memory.h"
+#include "assert/assert.h"
+
+dusktime_t TIME;
+
+void timeInit(void) {
+  memoryZero(&TIME, sizeof(TIME));
+
+  // Set these to something non-zero.
+  TIME.lastTick = DUSK_TIME_STEP;
+  TIME.delta = TIME.realDelta = DUSK_TIME_STEP;
+  TIME.realTime = TIME.time = DUSK_TIME_STEP * 2;
+}
+
+void timeUpdate(void) {
+  TIME.realDelta = timeDeltaGet();
+
+  #if DUSK_TIME_DYNAMIC
+    TIME.delta = TIME.realDelta;
+  #else
+    TIME.delta = DUSK_TIME_PLATFORM_STEP;
+  #endif
+  
+  assertTrue(TIME.delta >= 0.0f, "Time delta is negative");
+  assertTrue(TIME.realDelta >= 0.0f, "Real time delta is negative");
+
+  TIME.time += TIME.delta;
+  TIME.realTime += TIME.realDelta;
+}
+
+float_t timeDeltaGet(void) {
+  return 0.1f;
+}

src/time/time.h

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+/**
+ * Copyright (c) 2025 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "dusk.h"
+
+typedef struct {
+  float_t delta;
+  float_t lastTick;
+  float_t time;
+  float_t realDelta;
+  float_t realTime;
+} dusktime_t;
+
+extern dusktime_t TIME;
+
+#define DUSK_TIME_STEP (1.0f / 60.0f) // Default to 60FPS
+
+#ifndef DUSK_TIME_DYNAMIC
+  #define DUSK_TIME_DYNAMIC 1
+#endif
+
+#if DUSK_TIME_DYNAMIC == 0
+  #ifndef DUSK_TIME_PLATFORM_STEP 
+    #define DUSK_TIME_PLATFORM_STEP DUSK_TIME_STEP
+  #endif
+#endif
+
+/**
+ * Initializes the time system.
+ */
+void timeInit(void);
+
+/**
+ * Updates the time system
+ */
+void timeUpdate(void);
+
+#if DUSK_TIME_DYNAMIC == 1
+  /**
+   * Gets the time delta since the last frame, in seconds. Tied to the 
+   * platform.
+   * 
+   * This will only get called once per gameUpdate.
+   */
+  float_t timeDeltaGet(void);
+#endif
+