Initial commit

src/game/scripting/functions.cpp

@@ -0,0 +1,93 @@
+#include <stdinc.hpp>
+#include "functions.hpp"
+
+#include <utils/string.hpp>
+
+namespace scripting
+{
+	namespace
+	{
+		std::unordered_map<std::string, unsigned> lowercase_map(
+			const std::unordered_map<std::string, unsigned>& old_map)
+		{
+			std::unordered_map<std::string, unsigned> new_map{};
+			for (auto& entry : old_map)
+			{
+				new_map[utils::string::to_lower(entry.first)] = entry.second;
+			}
+
+			return new_map;
+		}
+
+		const std::unordered_map<std::string, unsigned>& get_methods()
+		{
+			static auto methods = lowercase_map(method_map);
+			return methods;
+		}
+
+		const std::unordered_map<std::string, unsigned>& get_functions()
+		{
+			static auto function = lowercase_map(function_map);
+			return function;
+		}
+
+		int find_function_index(const std::string& name, const bool prefer_global)
+		{
+			const auto target = utils::string::to_lower(name);
+
+			const auto& primary_map = prefer_global
+				                          ? get_functions()
+				                          : get_methods();
+			const auto& secondary_map = !prefer_global
+				                            ? get_functions()
+				                            : get_methods();
+
+			auto function_entry = primary_map.find(target);
+			if (function_entry != primary_map.end())
+			{
+				return function_entry->second;
+			}
+
+			function_entry = secondary_map.find(target);
+			if (function_entry != secondary_map.end())
+			{
+				return function_entry->second;
+			}
+
+			return -1;
+		}
+
+		script_function get_function_by_index(const unsigned index)
+		{
+			static const auto function_table = 0x1D6EB34;
+			static const auto method_table = 0x1D4F258;
+
+			if (index < 0x1C7)
+			{
+				return reinterpret_cast<script_function*>(function_table)[index];
+			}
+
+			return reinterpret_cast<script_function*>(method_table)[index];
+		}
+	}
+
+	int find_token_id(const std::string& name)
+	{
+		const auto result = token_map.find(name);
+
+		if (result != token_map.end())
+		{
+			return result->second;
+		}
+
+		return -1;
+	}
+
+	script_function find_function(const std::string& name, const bool prefer_global)
+	{
+		const auto index = find_function_index(name, prefer_global);
+		if (index < 0) return nullptr;
+
+		return get_function_by_index(index);
+	}
+}