Refactor: Amf3 implementation (#998)

* Update AMFDeserializeTests.cpp

Redo Amf3 functionality

Overhaul the whole thing due to it being outdated and clunky to use

Sometimes you want to keep the value

Update AMFDeserializeTests.cpp

* Fix enum and constructors

Correct enum to a class and simplify names.
Add a proper default constructor

* Update MasterServer.cpp

* Fix bugs and add more tests

* Refactor: AMF with templates in mind

- Remove hard coded bodge
- Use templates and generics to allow for much looser typing and strengthened implementation
- Move code into header only implementation for portability

Refactor: Convert AMF implementation to templates

- Rip out previous implementation
- Remove all extraneous terminology
- Add proper overloads for all types of inserts
- Fix up tests and codebase

* Fix compiler errors

* Check for null first

* Add specialization for const char*

* Update tests for new template specialization

* Switch BitStream to use references

* Rename files

* Check enum bounds on deserialize

I did this on a phone

dCommon/AmfSerialize.cpp

@@ -0,0 +1,184 @@
+#include "AmfSerialize.h"
+
+#include "Game.h"
+#include "dLogger.h"
+
+// Writes an AMFValue pointer to a RakNet::BitStream
+template<>
+void RakNet::BitStream::Write<AMFBaseValue&>(AMFBaseValue& value) {
+	eAmf type = value.GetValueType();
+	this->Write(type);
+	switch (type) {
+	case eAmf::Integer: {
+		this->Write<AMFIntValue&>(*static_cast<AMFIntValue*>(&value));
+		break;
+	}
+
+	case eAmf::Double: {
+		this->Write<AMFDoubleValue&>(*static_cast<AMFDoubleValue*>(&value));
+		break;
+	}
+
+	case eAmf::String: {
+		this->Write<AMFStringValue&>(*static_cast<AMFStringValue*>(&value));
+		break;
+	}
+
+	case eAmf::Array: {
+		this->Write<AMFArrayValue&>(*static_cast<AMFArrayValue*>(&value));
+		break;
+	}
+	default: {
+		Game::logger->Log("AmfSerialize", "Encountered unwritable AMFType %i!", type);
+	}
+	case eAmf::Undefined:
+	case eAmf::Null:
+	case eAmf::False:
+	case eAmf::True:
+	case eAmf::Date:
+	case eAmf::Object:
+	case eAmf::XML:
+	case eAmf::XMLDoc:
+	case eAmf::ByteArray:
+	case eAmf::VectorInt:
+	case eAmf::VectorUInt:
+	case eAmf::VectorDouble:
+	case eAmf::VectorObject:
+	case eAmf::Dictionary:
+		break;
+	}
+}
+
+/**
+ * A private function to write an value to a RakNet::BitStream
+ * RakNet writes in the correct byte order - do not reverse this.
+ */
+void WriteUInt29(RakNet::BitStream* bs, uint32_t v) {
+	unsigned char b4 = (unsigned char)v;
+	if (v < 0x00200000) {
+		b4 = b4 & 0x7F;
+		if (v > 0x7F) {
+			unsigned char b3;
+			v = v >> 7;
+			b3 = ((unsigned char)(v)) | 0x80;
+			if (v > 0x7F) {
+				unsigned char b2;
+				v = v >> 7;
+				b2 = ((unsigned char)(v)) | 0x80;
+				bs->Write(b2);
+			}
+
+			bs->Write(b3);
+		}
+	} else {
+		unsigned char b1;
+		unsigned char b2;
+		unsigned char b3;
+
+		v = v >> 8;
+		b3 = ((unsigned char)(v)) | 0x80;
+		v = v >> 7;
+		b2 = ((unsigned char)(v)) | 0x80;
+		v = v >> 7;
+		b1 = ((unsigned char)(v)) | 0x80;
+
+		bs->Write(b1);
+		bs->Write(b2);
+		bs->Write(b3);
+	}
+
+	bs->Write(b4);
+}
+
+/**
+ * Writes a flag number to a RakNet::BitStream
+ * RakNet writes in the correct byte order - do not reverse this.
+ */
+void WriteFlagNumber(RakNet::BitStream* bs, uint32_t v) {
+	v = (v << 1) | 0x01;
+	WriteUInt29(bs, v);
+}
+
+/**
+ * Writes an AMFString to a RakNet::BitStream
+ *
+ * RakNet writes in the correct byte order - do not reverse this.
+ */
+void WriteAMFString(RakNet::BitStream* bs, const std::string& str) {
+	WriteFlagNumber(bs, (uint32_t)str.size());
+	bs->Write(str.c_str(), (uint32_t)str.size());
+}
+
+/**
+ * Writes an U16 to a bitstream
+ *
+ * RakNet writes in the correct byte order - do not reverse this.
+ */
+void WriteAMFU16(RakNet::BitStream* bs, uint16_t value) {
+	bs->Write(value);
+}
+
+/**
+ * Writes an U32 to a bitstream
+ *
+ * RakNet writes in the correct byte order - do not reverse this.
+ */
+void WriteAMFU32(RakNet::BitStream* bs, uint32_t value) {
+	bs->Write(value);
+}
+
+/**
+ * Writes an U64 to a bitstream
+ *
+ * RakNet writes in the correct byte order - do not reverse this.
+ */
+void WriteAMFU64(RakNet::BitStream* bs, uint64_t value) {
+	bs->Write(value);
+}
+
+// Writes an AMFIntegerValue to BitStream
+template<>
+void RakNet::BitStream::Write<AMFIntValue&>(AMFIntValue& value) {
+	WriteUInt29(this, value.GetValue());
+}
+
+// Writes an AMFDoubleValue to BitStream
+template<>
+void RakNet::BitStream::Write<AMFDoubleValue&>(AMFDoubleValue& value) {
+	double d = value.GetValue();
+	WriteAMFU64(this, *reinterpret_cast<uint64_t*>(&d));
+}
+
+// Writes an AMFStringValue to BitStream
+template<>
+void RakNet::BitStream::Write<AMFStringValue&>(AMFStringValue& value) {
+	WriteAMFString(this, value.GetValue());
+}
+
+// Writes an AMFArrayValue to BitStream
+template<>
+void RakNet::BitStream::Write<AMFArrayValue&>(AMFArrayValue& value) {
+	uint32_t denseSize = value.GetDense().size();
+	WriteFlagNumber(this, denseSize);
+
+	auto it = value.GetAssociative().begin();
+	auto end = value.GetAssociative().end();
+
+	while (it != end) {
+		WriteAMFString(this, it->first);
+		this->Write<AMFBaseValue&>(*it->second);
+		it++;
+	}
+
+	this->Write(eAmf::Null);
+
+	if (denseSize > 0) {
+		auto it2 = value.GetDense().begin();
+		auto end2 = value.GetDense().end();
+
+		while (it2 != end2) {
+			this->Write<AMFBaseValue&>(**it2);
+			it2++;
+		}
+	}
+}