Consolidate state and building entity classes (#989)

LEGO1/lego/legoomni/include/legoact2.h

@@ -2,8 +2,43 @@
 #define LEGOACT2_H
 
 #include "act2brick.h"
+#include "legostate.h"
 #include "legoworld.h"
 
+// VTABLE: LEGO1 0x100d4a70
+// SIZE 0x10
+class LegoAct2State : public LegoState {
+public:
+	~LegoAct2State() override {}
+
+	// FUNCTION: LEGO1 0x1000df80
+	inline const char* ClassName() const override // vtable+0x0c
+	{
+		// STRING: LEGO1 0x100f0428
+		return "LegoAct2State";
+	}
+
+	// FUNCTION: LEGO1 0x1000df90
+	inline MxBool IsA(const char* p_name) const override // vtable+0x10
+	{
+		return !strcmp(p_name, LegoAct2State::ClassName()) || LegoState::IsA(p_name);
+	}
+
+	// FUNCTION: LEGO1 0x1000df70
+	MxBool IsSerializable() override { return FALSE; } // vtable+0x14
+
+	// SYNTHETIC: LEGO1 0x1000e040
+	// LegoAct2State::`scalar deleting destructor'
+
+	inline undefined4 GetUnknown0x08() { return m_unk0x08; }
+	inline void SetUnknown0x0c(undefined p_unk0x0c) { m_unk0x0c = p_unk0x0c; }
+
+	// TODO: Most likely getters/setters are not used according to BETA.
+
+	undefined4 m_unk0x08; // 0x08
+	undefined m_unk0x0c;  // 0x0c
+};
+
 // VTABLE: LEGO1 0x100d82e0
 // SIZE 0x1154
 class LegoAct2 : public LegoWorld {