Time is better.

src/time/CMakeLists.txt

@@ -19,6 +19,5 @@ elseif(DUSK_TARGET_SYSTEM STREQUAL "psp")
   target_compile_definitions(${DUSK_TARGET_NAME}
     PRIVATE
       TIME_FIXED=1
-      TIME_PLATFORM_STEP=0.016
   )
 endif()

src/time/time.c

@@ -22,31 +22,33 @@ void timeInit(void) {
   TIME.time = TIME_STEP;
   TIME.delta = TIME_STEP;
 
-  TIME.fixedDelta = TIME_STEP;
-  TIME.fixedTime = TIME_STEP;
+  #if TIME_FIXED == 0
+    TIME.dynamicTime = TIME_STEP;
+    TIME.dynamicDelta = TIME_STEP;
+    TIME.dynamicUpdate = false;
+  #endif
 }
 
 void timeUpdate(void) {
-  float_t delta;
-  #if TIME_SDL2
-    delta = (float_t)SDL_GetTicks() / 1000.0f - TIME.time;
-  #elif TIME_FIXED
-    delta = TIME_PLATFORM_STEP;
+
+  #if TIME_FIXED ==  0
+    #if TIME_SDL2
+      float_t newTime = (float_t)SDL_GetTicks() / 1000.0f;
+      TIME.dynamicDelta = newTime - TIME.dynamicTime;
+      TIME.dynamicTime = newTime;
+      TIME.dynamicUpdate = true;
+    #else
+      #error "No time platform defined"
+    #endif
+
+    assertTrue(TIME.dynamicDelta >= 0.0f, "Time delta is negative");
+    if(TIME.dynamicTime - TIME.time >= TIME_STEP) {
+      TIME.dynamicUpdate = false;
+      TIME.delta = TIME_STEP;
+      TIME.time += TIME_STEP;
+    }
   #else
-    #error "No time platform defined"
+    TIME.delta = TIME_STEP;
+    TIME.time += TIME_STEP;
   #endif
-
-  TIME.delta = delta;
-  assertTrue(TIME.delta >= 0.0f, "Time delta is negative");
-  TIME.time += TIME.delta;
-
-  // Perform a fixed time step.
-  if(TIME.time - TIME.fixedTime >= (TIME_STEP * 0.9f)) {
-    TIME.fixedUpdate = true;
-    TIME.fixedDelta = TIME_STEP;
-    TIME.fixedTime += TIME_STEP;
-  } else {
-    TIME.fixedDelta = 0.0f;
-    TIME.fixedUpdate = false;
-  }
 }

src/time/time.h

@@ -8,18 +8,37 @@
 #pragma once
 #include "dusk.h"
 
+#define TIME_STEP (1.0f / 60.0f) // 60 Ticks per second.
+
+#ifndef TIME_FIXED
+  #define TIME_FIXED 0
+#else
+  #ifndef TIME_PLATFORM_STEP
+    #error "TIME_PLATFORM_STEP must be defined when TIME_FIXED is enabled"
+  #endif
+
+  #if TIME_PLATFORM_STEP <= 0.0f
+    #error "TIME_PLATFORM_STEP must be greater than zero"
+  #endif
+
+  #if TIME_PLATFORM_STEP != TIME_STEP
+    #define TIME_FIXED 0
+  #endif
+#endif
+
 typedef struct {
   float_t delta;
   float_t time;
 
-  bool_t fixedUpdate;
-  float_t fixedDelta;
-  float_t fixedTime;
+  #if TIME_FIXED == 0
+    bool_t dynamicUpdate;
+    float_t dynamicDelta;
+    float_t dynamicTime;
+  #endif
 } dusktime_t;
 
 extern dusktime_t TIME;
 
-#define TIME_STEP (1.0f / 60.0f) // 60 Ticks per second.
 
 /**
  * Initializes the time system.