Cog Sample: Adding more gameplay

Cog Sample: Make Area a component instead of an actor
Cog Sample: Add Basic actor for Projectiles, Areas, etc...
Cog Sample: Start to add Projectile
Cog Sample: Start to add SpawnPrediction

Source/CogSample/CogSampleSpawnableInterface.h

@@ -0,0 +1,22 @@
+#pragma once
+
+#include "CoreMinimal.h"
+#include "CogSampleSpawnableInterface.generated.h"
+
+UINTERFACE(MinimalAPI, Blueprintable)
+class UCogSampleSpawnableInterface : public UInterface
+{
+    GENERATED_BODY()
+};
+
+class ICogSampleSpawnableInterface
+{
+    GENERATED_BODY()
+
+public:
+
+    virtual AActor* GetCreator() const { return nullptr; }
+
+    virtual void SetCreator(AActor* Value) { }
+};
+