diff --git a/src/ecs.c b/src/ecs.c
index 9eb08c3..a12a079 100644
--- a/src/ecs.c
+++ b/src/ecs.c
@@ -139,11 +139,15 @@ inline void destroy_entity(entity_t *entity)
 inline void entity_manager_init(entity_manager_t *entity_manager)
 {
     linked_list_init(&entity_manager->entities, sizeof(entity_t), (deleter_t)destroy_entity);
+
+    debug_printf("Initialized entity manager.");
 }
 
 inline void entity_manager_add_entity(entity_manager_t *entity_manager, entity_t *entity)
 {
     linked_list_push_back(&entity_manager->entities, entity);
+
+    debug_printf("Added entity %d to entity manager.", entity->id);
 }
 
 // Only for this file
@@ -186,4 +190,6 @@ inline void entity_manager_remove_entity(entity_manager_t *entity_manager, unsig
 inline void entity_manager_exit(entity_manager_t *entity_manager)
 {
     linked_list_clear(&entity_manager->entities);
+
+    debug_printf("Exited entity manager.");
 }
diff --git a/src/main.c b/src/main.c
index a894135..2742ea5 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1,7 +1,17 @@
 #include "game.h"
 
+#include <SDL2/SDL.h>
+
 game_t game;
 
+static inline void update_time(void)
+{
+    static uint32_t last_clock_state = 0;
+    uint32_t start_clock = SDL_GetTicks();
+    game.delta_time_ms = (float)(start_clock - last_clock_state);
+    last_clock_state = start_clock;
+}
+
 int main(void)
 {
     int exit_status = EXIT_SUCCESS;
@@ -10,6 +20,7 @@ int main(void)
 
     while(game.is_running)
     {
+        update_time();
         game_handle_event();
         game_update();
         if(game_render()) exit_status = EXIT_FAILURE;