Stopwatch for seeing different system's tick-duration.

ecs.odin

@@ -3,6 +3,7 @@ package ecs
 import "core:container/queue"
 import "core:fmt"
 import "core:log"
+import "core:time"
 
 Entity :: struct {
     id: Entity_ID,
@@ -297,10 +298,23 @@ create_system :: proc(
 }
 
 tick :: proc(world: ^World) {
+    sw: time.Stopwatch
+
     for &s in &world.systems {
         assert(&s != nil)
         assert(s.tick != nil)
-        s.tick(world, s.state)
+
+        time.stopwatch_reset(&sw)
+        time.stopwatch_start(&sw)
+        {
+            s.tick(world, s.state)
+        }
+        time.stopwatch_stop(&sw)
+        
+        // TODO: SS - Reintroduce this at some point. Really nice for debugging! :)
+        // system_tick_time := time.stopwatch_duration(sw)
+        // fmt.printfln("System '%v' took %v ms.", s.name, time.duration_milliseconds(system_tick_time))
+
     }
 
     world.tick += 1