1 files changed, 151 insertions, 0 deletions
diff --git a/primedev/plugins/plugin_abi.h b/primedev/plugins/plugin_abi.h
new file mode 100644
index 00000000..16b26a1c
--- /dev/null
+++ b/primedev/plugins/plugin_abi.h
@@ -0,0 +1,151 @@
+#pragma once
+#include "squirrel/squirrelclasstypes.h"
+
+#define ABI_VERSION 3
+
+enum PluginLoadDLL
+{
+	ENGINE = 0,
+	CLIENT,
+	SERVER
+};
+
+enum ObjectType
+{
+	CONCOMMANDS = 0,
+	CONVAR = 1,
+};
+
+struct SquirrelFunctions
+{
+	RegisterSquirrelFuncType RegisterSquirrelFunc;
+	sq_defconstType __sq_defconst;
+
+	sq_compilebufferType __sq_compilebuffer;
+	sq_callType __sq_call;
+	sq_raiseerrorType __sq_raiseerror;
+	sq_compilefileType __sq_compilefile;
+
+	sq_newarrayType __sq_newarray;
+	sq_arrayappendType __sq_arrayappend;
+
+	sq_newtableType __sq_newtable;
+	sq_newslotType __sq_newslot;
+
+	sq_pushroottableType __sq_pushroottable;
+	sq_pushstringType __sq_pushstring;
+	sq_pushintegerType __sq_pushinteger;
+	sq_pushfloatType __sq_pushfloat;
+	sq_pushboolType __sq_pushbool;
+	sq_pushassetType __sq_pushasset;
+	sq_pushvectorType __sq_pushvector;
+	sq_pushobjectType __sq_pushobject;
+
+	sq_getstringType __sq_getstring;
+	sq_getintegerType __sq_getinteger;
+	sq_getfloatType __sq_getfloat;
+	sq_getboolType __sq_getbool;
+	sq_getType __sq_get;
+	sq_getassetType __sq_getasset;
+	sq_getuserdataType __sq_getuserdata;
+	sq_getvectorType __sq_getvector;
+	sq_getthisentityType __sq_getthisentity;
+	sq_getobjectType __sq_getobject;
+
+	sq_stackinfosType __sq_stackinfos;
+
+	sq_createuserdataType __sq_createuserdata;
+	sq_setuserdatatypeidType __sq_setuserdatatypeid;
+	sq_getfunctionType __sq_getfunction;
+
+	sq_schedule_call_externalType __sq_schedule_call_external;
+
+	sq_getentityfrominstanceType __sq_getentityfrominstance;
+	sq_GetEntityConstantType __sq_GetEntityConstant_CBaseEntity;
+
+	sq_pushnewstructinstanceType __sq_pushnewstructinstance;
+	sq_sealstructslotType __sq_sealstructslot;
+};
+
+struct MessageSource
+{
+	const char* file;
+	const char* func;
+	int line;
+};
+
+// This is a modified version of spdlog::details::log_msg
+// This is so that we can make it cross DLL boundaries
+struct LogMsg
+{
+	int level;
+	uint64_t timestamp;
+	const char* msg;
+	MessageSource source;
+	int pluginHandle;
+};
+
+extern "C"
+{
+	typedef void (*loggerfunc_t)(LogMsg* msg);
+	typedef void (*PLUGIN_RELAY_INVITE_TYPE)(const char* invite);
+	typedef void* (*CreateObjectFunc)(ObjectType type);
+
+	typedef void (*PluginFnCommandCallback_t)(void* command);
+	typedef void (*PluginConCommandConstructorType)(
+		void* newCommand, const char* name, PluginFnCommandCallback_t callback, const char* helpString, int flags, void* parent);
+	typedef void (*PluginConVarRegisterType)(
+		void* pConVar,
+		const char* pszName,
+		const char* pszDefaultValue,
+		int nFlags,
+		const char* pszHelpString,
+		bool bMin,
+		float fMin,
+		bool bMax,
+		float fMax,
+		void* pCallback);
+	typedef void (*PluginConVarMallocType)(void* pConVarMaloc, int a2, int a3);
+}
+
+struct PluginNorthstarData
+{
+	const char* version;
+	HMODULE northstarModule;
+	int pluginHandle;
+};
+
+struct PluginInitFuncs
+{
+	loggerfunc_t logger;
+	PLUGIN_RELAY_INVITE_TYPE relayInviteFunc;
+	CreateObjectFunc createObject;
+};
+
+struct PluginEngineData
+{
+	PluginConCommandConstructorType ConCommandConstructor;
+	PluginConVarMallocType conVarMalloc;
+	PluginConVarRegisterType conVarRegister;
+	void* ConVar_Vtable;
+	void* IConVar_Vtable;
+	void* g_pCVar;
+};
+
+/// <summary> Async communication within the plugin system
+/// Due to the asynchronous nature of plugins, combined with the limitations of multi-compiler support
+/// and the custom memory allocator used by r2, is it difficult to safely get data across DLL boundaries
+/// from Northstar to plugin unless Northstar can own that memory.
+/// This means that plugins should manage their own memory and can only receive data from northstar using one of the functions below.
+/// These should be exports of the plugin DLL. If they are not exported, they will not be called.
+/// Note that it is not required to have these exports if you do not use them.
+/// </summary>
+
+// Northstar -> Plugin
+typedef void (*PLUGIN_INIT_TYPE)(PluginInitFuncs* funcs, PluginNorthstarData* data);
+typedef void (*PLUGIN_INIT_SQVM_TYPE)(SquirrelFunctions* funcs);
+typedef void (*PLUGIN_INFORM_SQVM_CREATED_TYPE)(ScriptContext context, CSquirrelVM* sqvm);
+typedef void (*PLUGIN_INFORM_SQVM_DESTROYED_TYPE)(ScriptContext context);
+
+typedef void (*PLUGIN_INFORM_DLL_LOAD_TYPE)(const char* dll, PluginEngineData* data, void* dllPtr);
+typedef void (*PLUGIN_RUNFRAME)();