summaryrefslogtreecommitdiffstats
path: root/src/Bindings/LuaState.h
diff options
context:
space:
mode:
Diffstat (limited to 'src/Bindings/LuaState.h')
-rw-r--r--src/Bindings/LuaState.h267
1 files changed, 161 insertions, 106 deletions
diff --git a/src/Bindings/LuaState.h b/src/Bindings/LuaState.h
index f8b67f5cd..b9ca2f29b 100644
--- a/src/Bindings/LuaState.h
+++ b/src/Bindings/LuaState.h
@@ -29,6 +29,8 @@ extern "C"
#include "lua/src/lauxlib.h"
}
+#include "../Vector3.h"
+
@@ -36,6 +38,7 @@ extern "C"
class cWorld;
class cPlayer;
class cEntity;
+class cProjectileEntity;
class cMonster;
class cItem;
class cItems;
@@ -52,7 +55,6 @@ class cWebAdmin;
struct HTTPTemplateRequest;
class cTNTEntity;
class cCreeper;
-class Vector3i;
class cHopperEntity;
class cBlockEntity;
@@ -60,27 +62,40 @@ class cBlockEntity;
-/// Encapsulates a Lua state and provides some syntactic sugar for common operations
+/** Encapsulates a Lua state and provides some syntactic sugar for common operations */
class cLuaState
{
public:
- /// Used for storing references to object in the global registry
+ /** Used for storing references to object in the global registry.
+ Can be bound (contains a reference) or unbound (doesn't contain reference).
+ The reference can also be reset by calling RefStack(). */
class cRef
{
public:
- /// Creates a reference in the specified LuaState for object at the specified StackPos
+ /** Creates an unbound reference object. */
+ cRef(void);
+
+ /** Creates a reference in the specified LuaState for object at the specified StackPos */
cRef(cLuaState & a_LuaState, int a_StackPos);
+
~cRef();
- /// Returns true if the reference is valid
+ /** Creates a reference to Lua object at the specified stack pos, binds this object to it.
+ Calls UnRef() first if previously bound to another reference. */
+ void RefStack(cLuaState & a_LuaState, int a_StackPos);
+
+ /** Removes the bound reference, resets the object to Unbound state. */
+ void UnRef(void);
+
+ /** Returns true if the reference is valid */
bool IsValid(void) const {return (m_Ref != LUA_REFNIL); }
- /// Allows to use this class wherever an int (i. e. ref) is to be used
+ /** Allows to use this class wherever an int (i. e. ref) is to be used */
operator int(void) const { return m_Ref; }
protected:
- cLuaState & m_LuaState;
+ cLuaState * m_LuaState;
int m_Ref;
} ;
@@ -102,7 +117,7 @@ public:
} ;
- /// A dummy class that's used only to delimit function args from return values for cLuaState::Call()
+ /** A dummy class that's used only to delimit function args from return values for cLuaState::Call() */
class cRet
{
} ;
@@ -123,31 +138,39 @@ public:
~cLuaState();
- /// Allows this object to be used in the same way as a lua_State *, for example in the LuaLib functions
+ /** Allows this object to be used in the same way as a lua_State *, for example in the LuaLib functions */
operator lua_State * (void) { return m_LuaState; }
- /// Creates the m_LuaState, if not closed already. This state will be automatically closed in the destructor
+ /** Creates the m_LuaState, if not closed already. This state will be automatically closed in the destructor.
+ The regular Lua libs are registered, but the MCS API is not registered (so that Lua can be used as
+ lite-config as well), use RegisterAPILibs() to do that. */
void Create(void);
- /// Closes the m_LuaState, if not closed already
+ /** Registers all the API libraries that MCS provides into m_LuaState. */
+ void RegisterAPILibs(void);
+
+ /** Closes the m_LuaState, if not closed already */
void Close(void);
- /// Attaches the specified state. Operations will be carried out on this state, but it will not be closed in the destructor
+ /** Attaches the specified state. Operations will be carried out on this state, but it will not be closed in the destructor */
void Attach(lua_State * a_State);
- /// Detaches a previously attached state.
+ /** Detaches a previously attached state. */
void Detach(void);
- /// Returns true if the m_LuaState is valid
+ /** Returns true if the m_LuaState is valid */
bool IsValid(void) const { return (m_LuaState != NULL); }
+ /** Adds the specified path to package.<a_PathVariable> */
+ void AddPackagePath(const AString & a_PathVariable, const AString & a_Path);
+
/** Loads the specified file
Returns false and logs a warning to the console if not successful (but the LuaState is kept open).
m_SubsystemName is displayed in the warning log message.
*/
bool LoadFile(const AString & a_FileName);
- /// Returns true if a_FunctionName is a valid Lua function that can be called
+ /** Returns true if a_FunctionName is a valid Lua function that can be called */
bool HasFunction(const char * a_FunctionName);
// Push a value onto the stack
@@ -161,6 +184,7 @@ public:
void Push(cPlayer * a_Player);
void Push(const cPlayer * a_Player);
void Push(cEntity * a_Entity);
+ void Push(cProjectileEntity * a_ProjectileEntity);
void Push(cMonster * a_Monster);
void Push(cItem * a_Item);
void Push(cItems * a_Items);
@@ -181,8 +205,21 @@ public:
void Push(void * a_Ptr);
void Push(cHopperEntity * a_Hopper);
void Push(cBlockEntity * a_BlockEntity);
+
+ /** Retrieve value at a_StackPos, if it is a valid bool. If not, a_Value is unchanged */
+ void GetStackValue(int a_StackPos, bool & a_Value);
+
+ /** Retrieve value at a_StackPos, if it is a valid string. If not, a_Value is unchanged */
+ void GetStackValue(int a_StackPos, AString & a_Value);
+
+ /** Retrieve value at a_StackPos, if it is a valid number. If not, a_Value is unchanged */
+ void GetStackValue(int a_StackPos, int & a_Value);
+
+ /** Retrieve value at a_StackPos, if it is a valid number. If not, a_Value is unchanged */
+ void GetStackValue(int a_StackPos, double & a_Value);
+
- /// Call any 0-param 0-return Lua function in a single line:
+ /** Call any 0-param 0-return Lua function in a single line: */
template <typename FnT>
bool Call(FnT a_FnName)
{
@@ -193,7 +230,7 @@ public:
return CallFunction(0);
}
- /// Call any 1-param 0-return Lua function in a single line:
+ /** Call any 1-param 0-return Lua function in a single line: */
template<
typename FnT,
typename ArgT1
@@ -208,7 +245,7 @@ public:
return CallFunction(0);
}
- /// Call any 2-param 0-return Lua function in a single line:
+ /** Call any 2-param 0-return Lua function in a single line: */
template<
typename FnT, typename ArgT1, typename ArgT2
>
@@ -223,7 +260,7 @@ public:
return CallFunction(0);
}
- /// Call any 3-param 0-return Lua function in a single line:
+ /** Call any 3-param 0-return Lua function in a single line: */
template<
typename FnT, typename ArgT1, typename ArgT2, typename ArgT3
>
@@ -239,7 +276,7 @@ public:
return CallFunction(0);
}
- /// Call any 0-param 1-return Lua function in a single line:
+ /** Call any 0-param 1-return Lua function in a single line: */
template<
typename FnT, typename RetT1
>
@@ -254,17 +291,18 @@ public:
{
return false;
}
- GetReturn(-1, a_Ret1);
+ GetStackValue(-1, a_Ret1);
lua_pop(m_LuaState, 1);
return true;
}
- /// Call any 1-param 1-return Lua function in a single line:
+ /** Call any 1-param 1-return Lua function in a single line: */
template<
typename FnT, typename ArgT1, typename RetT1
>
bool Call(FnT a_FnName, ArgT1 a_Arg1, const cRet & a_Mark, RetT1 & a_Ret1)
{
+ int InitialTop = lua_gettop(m_LuaState);
UNUSED(a_Mark);
if (!PushFunction(a_FnName))
{
@@ -275,12 +313,13 @@ public:
{
return false;
}
- GetReturn(-1, a_Ret1);
+ GetStackValue(-1, a_Ret1);
lua_pop(m_LuaState, 1);
+ ASSERT(InitialTop == lua_gettop(m_LuaState));
return true;
}
- /// Call any 2-param 1-return Lua function in a single line:
+ /** Call any 2-param 1-return Lua function in a single line: */
template<
typename FnT, typename ArgT1, typename ArgT2, typename RetT1
>
@@ -297,12 +336,12 @@ public:
{
return false;
}
- GetReturn(-1, a_Ret1);
+ GetStackValue(-1, a_Ret1);
lua_pop(m_LuaState, 1);
return true;
}
- /// Call any 3-param 1-return Lua function in a single line:
+ /** Call any 3-param 1-return Lua function in a single line: */
template<
typename FnT, typename ArgT1, typename ArgT2, typename ArgT3, typename RetT1
>
@@ -320,12 +359,12 @@ public:
{
return false;
}
- GetReturn(-1, a_Ret1);
+ GetStackValue(-1, a_Ret1);
lua_pop(m_LuaState, 1);
return true;
}
- /// Call any 4-param 1-return Lua function in a single line:
+ /** Call any 4-param 1-return Lua function in a single line: */
template<
typename FnT, typename ArgT1, typename ArgT2, typename ArgT3, typename ArgT4, typename RetT1
>
@@ -344,12 +383,12 @@ public:
{
return false;
}
- GetReturn(-1, a_Ret1);
+ GetStackValue(-1, a_Ret1);
lua_pop(m_LuaState, 1);
return true;
}
- /// Call any 5-param 1-return Lua function in a single line:
+ /** Call any 5-param 1-return Lua function in a single line: */
template<
typename FnT, typename ArgT1, typename ArgT2, typename ArgT3, typename ArgT4, typename ArgT5, typename RetT1
>
@@ -369,12 +408,12 @@ public:
{
return false;
}
- GetReturn(-1, a_Ret1);
+ GetStackValue(-1, a_Ret1);
lua_pop(m_LuaState, 1);
return true;
}
- /// Call any 6-param 1-return Lua function in a single line:
+ /** Call any 6-param 1-return Lua function in a single line: */
template<
typename FnT, typename ArgT1, typename ArgT2, typename ArgT3, typename ArgT4, typename ArgT5, typename ArgT6,
typename RetT1
@@ -396,12 +435,12 @@ public:
{
return false;
}
- GetReturn(-1, a_Ret1);
+ GetStackValue(-1, a_Ret1);
lua_pop(m_LuaState, 1);
return true;
}
- /// Call any 7-param 1-return Lua function in a single line:
+ /** Call any 7-param 1-return Lua function in a single line: */
template<
typename FnT, typename ArgT1, typename ArgT2, typename ArgT3, typename ArgT4, typename ArgT5, typename ArgT6,
typename ArgT7, typename RetT1
@@ -424,12 +463,12 @@ public:
{
return false;
}
- GetReturn(-1, a_Ret1);
+ GetStackValue(-1, a_Ret1);
lua_pop(m_LuaState, 1);
return true;
}
- /// Call any 8-param 1-return Lua function in a single line:
+ /** Call any 8-param 1-return Lua function in a single line: */
template<
typename FnT, typename ArgT1, typename ArgT2, typename ArgT3, typename ArgT4, typename ArgT5, typename ArgT6,
typename ArgT7, typename ArgT8, typename RetT1
@@ -453,12 +492,12 @@ public:
{
return false;
}
- GetReturn(-1, a_Ret1);
+ GetStackValue(-1, a_Ret1);
lua_pop(m_LuaState, 1);
return true;
}
- /// Call any 9-param 1-return Lua function in a single line:
+ /** Call any 9-param 1-return Lua function in a single line: */
template<
typename FnT, typename ArgT1, typename ArgT2, typename ArgT3, typename ArgT4, typename ArgT5, typename ArgT6,
typename ArgT7, typename ArgT8, typename ArgT9, typename RetT1
@@ -483,12 +522,12 @@ public:
{
return false;
}
- GetReturn(-1, a_Ret1);
+ GetStackValue(-1, a_Ret1);
lua_pop(m_LuaState, 1);
return true;
}
- /// Call any 10-param 1-return Lua function in a single line:
+ /** Call any 10-param 1-return Lua function in a single line: */
template<
typename FnT, typename ArgT1, typename ArgT2, typename ArgT3, typename ArgT4, typename ArgT5, typename ArgT6,
typename ArgT7, typename ArgT8, typename ArgT9, typename ArgT10, typename RetT1
@@ -514,12 +553,12 @@ public:
{
return false;
}
- GetReturn(-1, a_Ret1);
+ GetStackValue(-1, a_Ret1);
lua_pop(m_LuaState, 1);
return true;
}
- /// Call any 1-param 2-return Lua function in a single line:
+ /** Call any 1-param 2-return Lua function in a single line: */
template<
typename FnT, typename ArgT1, typename RetT1, typename RetT2
>
@@ -535,13 +574,13 @@ public:
{
return false;
}
- GetReturn(-2, a_Ret1);
- GetReturn(-1, a_Ret2);
+ GetStackValue(-2, a_Ret1);
+ GetStackValue(-1, a_Ret2);
lua_pop(m_LuaState, 2);
return true;
}
- /// Call any 2-param 2-return Lua function in a single line:
+ /** Call any 2-param 2-return Lua function in a single line: */
template<
typename FnT, typename ArgT1, typename ArgT2, typename RetT1, typename RetT2
>
@@ -558,13 +597,13 @@ public:
{
return false;
}
- GetReturn(-2, a_Ret1);
- GetReturn(-1, a_Ret2);
+ GetStackValue(-2, a_Ret1);
+ GetStackValue(-1, a_Ret2);
lua_pop(m_LuaState, 2);
return true;
}
- /// Call any 3-param 2-return Lua function in a single line:
+ /** Call any 3-param 2-return Lua function in a single line: */
template<
typename FnT, typename ArgT1, typename ArgT2, typename ArgT3,
typename RetT1, typename RetT2
@@ -583,13 +622,13 @@ public:
{
return false;
}
- GetReturn(-2, a_Ret1);
- GetReturn(-1, a_Ret2);
+ GetStackValue(-2, a_Ret1);
+ GetStackValue(-1, a_Ret2);
lua_pop(m_LuaState, 2);
return true;
}
- /// Call any 4-param 2-return Lua function in a single line:
+ /** Call any 4-param 2-return Lua function in a single line: */
template<
typename FnT, typename ArgT1, typename ArgT2, typename ArgT3, typename ArgT4,
typename RetT1, typename RetT2
@@ -609,13 +648,13 @@ public:
{
return false;
}
- GetReturn(-2, a_Ret1);
- GetReturn(-1, a_Ret2);
+ GetStackValue(-2, a_Ret1);
+ GetStackValue(-1, a_Ret2);
lua_pop(m_LuaState, 2);
return true;
}
- /// Call any 5-param 2-return Lua function in a single line:
+ /** Call any 5-param 2-return Lua function in a single line: */
template<
typename FnT, typename ArgT1, typename ArgT2, typename ArgT3, typename ArgT4, typename ArgT5,
typename RetT1, typename RetT2
@@ -636,13 +675,13 @@ public:
{
return false;
}
- GetReturn(-2, a_Ret1);
- GetReturn(-1, a_Ret2);
+ GetStackValue(-2, a_Ret1);
+ GetStackValue(-1, a_Ret2);
lua_pop(m_LuaState, 2);
return true;
}
- /// Call any 6-param 2-return Lua function in a single line:
+ /** Call any 6-param 2-return Lua function in a single line: */
template<
typename FnT, typename ArgT1, typename ArgT2, typename ArgT3, typename ArgT4, typename ArgT5,
typename ArgT6,
@@ -665,13 +704,13 @@ public:
{
return false;
}
- GetReturn(-2, a_Ret1);
- GetReturn(-1, a_Ret2);
+ GetStackValue(-2, a_Ret1);
+ GetStackValue(-1, a_Ret2);
lua_pop(m_LuaState, 2);
return true;
}
- /// Call any 7-param 2-return Lua function in a single line:
+ /** Call any 7-param 2-return Lua function in a single line: */
template<
typename FnT, typename ArgT1, typename ArgT2, typename ArgT3, typename ArgT4, typename ArgT5,
typename ArgT6, typename ArgT7,
@@ -695,13 +734,13 @@ public:
{
return false;
}
- GetReturn(-2, a_Ret1);
- GetReturn(-1, a_Ret2);
+ GetStackValue(-2, a_Ret1);
+ GetStackValue(-1, a_Ret2);
lua_pop(m_LuaState, 2);
return true;
}
- /// Call any 7-param 3-return Lua function in a single line:
+ /** Call any 7-param 3-return Lua function in a single line: */
template<
typename FnT, typename ArgT1, typename ArgT2, typename ArgT3, typename ArgT4, typename ArgT5,
typename ArgT6, typename ArgT7,
@@ -725,14 +764,14 @@ public:
{
return false;
}
- GetReturn(-3, a_Ret1);
- GetReturn(-2, a_Ret2);
- GetReturn(-1, a_Ret3);
+ GetStackValue(-3, a_Ret1);
+ GetStackValue(-2, a_Ret2);
+ GetStackValue(-1, a_Ret3);
lua_pop(m_LuaState, 3);
return true;
}
- /// Call any 8-param 3-return Lua function in a single line:
+ /** Call any 8-param 3-return Lua function in a single line: */
template<
typename FnT, typename ArgT1, typename ArgT2, typename ArgT3, typename ArgT4, typename ArgT5,
typename ArgT6, typename ArgT7, typename ArgT8,
@@ -757,14 +796,14 @@ public:
{
return false;
}
- GetReturn(-3, a_Ret1);
- GetReturn(-2, a_Ret2);
- GetReturn(-1, a_Ret3);
+ GetStackValue(-3, a_Ret1);
+ GetStackValue(-2, a_Ret2);
+ GetStackValue(-1, a_Ret3);
lua_pop(m_LuaState, 3);
return true;
}
- /// Call any 9-param 5-return Lua function in a single line:
+ /** Call any 9-param 5-return Lua function in a single line: */
template<
typename FnT, typename ArgT1, typename ArgT2, typename ArgT3, typename ArgT4, typename ArgT5,
typename ArgT6, typename ArgT7, typename ArgT8, typename ArgT9,
@@ -790,56 +829,84 @@ public:
{
return false;
}
- GetReturn(-5, a_Ret1);
- GetReturn(-4, a_Ret2);
- GetReturn(-3, a_Ret3);
- GetReturn(-2, a_Ret4);
- GetReturn(-1, a_Ret5);
+ GetStackValue(-5, a_Ret1);
+ GetStackValue(-4, a_Ret2);
+ GetStackValue(-3, a_Ret3);
+ GetStackValue(-2, a_Ret4);
+ GetStackValue(-1, a_Ret5);
lua_pop(m_LuaState, 5);
return true;
}
- /// Returns true if the specified parameters on the stack are of the specified usertable type; also logs warning if not. Used for static functions
+ /** Returns true if the specified parameters on the stack are of the specified usertable type; also logs warning if not. Used for static functions */
bool CheckParamUserTable(int a_StartParam, const char * a_UserTable, int a_EndParam = -1);
- /// Returns true if the specified parameters on the stack are of the specified usertype; also logs warning if not. Used for regular functions
+ /** Returns true if the specified parameters on the stack are of the specified usertype; also logs warning if not. Used for regular functions */
bool CheckParamUserType(int a_StartParam, const char * a_UserType, int a_EndParam = -1);
- /// Returns true if the specified parameters on the stack are tables; also logs warning if not
+ /** Returns true if the specified parameters on the stack are tables; also logs warning if not */
bool CheckParamTable(int a_StartParam, int a_EndParam = -1);
- /// Returns true if the specified parameters on the stack are numbers; also logs warning if not
+ /** Returns true if the specified parameters on the stack are numbers; also logs warning if not */
bool CheckParamNumber(int a_StartParam, int a_EndParam = -1);
- /// Returns true if the specified parameters on the stack are strings; also logs warning if not
+ /** Returns true if the specified parameters on the stack are strings; also logs warning if not */
bool CheckParamString(int a_StartParam, int a_EndParam = -1);
- /// Returns true if the specified parameters on the stack are functions; also logs warning if not
+ /** Returns true if the specified parameters on the stack are functions; also logs warning if not */
bool CheckParamFunction(int a_StartParam, int a_EndParam = -1);
- /// Returns true if the specified parameter on the stack is nil (indicating an end-of-parameters)
+ /** Returns true if the specified parameters on the stack are functions or nils; also logs warning if not */
+ bool CheckParamFunctionOrNil(int a_StartParam, int a_EndParam = -1);
+
+ /** Returns true if the specified parameter on the stack is nil (indicating an end-of-parameters) */
bool CheckParamEnd(int a_Param);
- /// If the status is nonzero, prints the text on the top of Lua stack and returns true
+ /** If the status is nonzero, prints the text on the top of Lua stack and returns true */
bool ReportErrors(int status);
- /// If the status is nonzero, prints the text on the top of Lua stack and returns true
+ /** If the status is nonzero, prints the text on the top of Lua stack and returns true */
static bool ReportErrors(lua_State * a_LuaState, int status);
- /// Logs all items in the current stack trace to the server console
- void LogStackTrace(void);
+ /** Logs all items in the current stack trace to the server console */
+ void LogStackTrace(int a_StartingDepth = 0);
- /// Logs all items in the current stack trace to the server console
- static void LogStackTrace(lua_State * a_LuaState);
+ /** Logs all items in the current stack trace to the server console */
+ static void LogStackTrace(lua_State * a_LuaState, int a_StartingDepth = 0);
- /// Returns the type of the item on the specified position in the stack
+ /** Returns the type of the item on the specified position in the stack */
AString GetTypeText(int a_StackPos);
+ /** Calls the function specified by its name, with arguments copied off the foreign state.
+ If successful, keeps the return values on the stack and returns their number.
+ If unsuccessful, returns a negative number and keeps the stack position unchanged. */
+ int CallFunctionWithForeignParams(
+ const AString & a_FunctionName,
+ cLuaState & a_SrcLuaState,
+ int a_SrcParamStart,
+ int a_SrcParamEnd
+ );
+
+ /** Copies objects on the stack from the specified state.
+ Only numbers, bools, strings and userdatas are copied.
+ If successful, returns the number of objects copied.
+ If failed, returns a negative number and rewinds the stack position. */
+ int CopyStackFrom(cLuaState & a_SrcLuaState, int a_SrcStart, int a_SrcEnd);
+
+ /** Reads the value at the specified stack position as a string and sets it to a_String. */
+ void ToString(int a_StackPos, AString & a_String);
+
+ /** Logs all the elements' types on the API stack, with an optional header for the listing. */
+ void LogStack(const char * a_Header);
+
+ /** Logs all the elements' types on the API stack, with an optional header for the listing. */
+ static void LogStack(lua_State * a_LuaState, const char * a_Header = NULL);
+
protected:
lua_State * m_LuaState;
- /// If true, the state is owned by this object and will be auto-Closed. False => attached state
+ /** If true, the state is owned by this object and will be auto-Closed. False => attached state */
bool m_IsOwned;
/** The subsystem name is used for reporting errors to the console, it is either "plugin %s" or "LuaScript"
@@ -847,10 +914,10 @@ protected:
*/
AString m_SubsystemName;
- /// Name of the currently pushed function (for the Push / Call chain)
+ /** Name of the currently pushed function (for the Push / Call chain) */
AString m_CurrentFunctionName;
- /// Number of arguments currently pushed (for the Push / Call chain)
+ /** Number of arguments currently pushed (for the Push / Call chain) */
int m_NumCurrentFunctionArgs;
@@ -869,21 +936,9 @@ protected:
*/
bool PushFunction(const cTableRef & a_TableRef);
- /// Pushes a usertype of the specified class type onto the stack
+ /** Pushes a usertype of the specified class type onto the stack */
void PushUserType(void * a_Object, const char * a_Type);
- /// Retrieve value returned at a_StackPos, if it is a valid bool. If not, a_ReturnedVal is unchanged
- void GetReturn(int a_StackPos, bool & a_ReturnedVal);
-
- /// Retrieve value returned at a_StackPos, if it is a valid string. If not, a_ReturnedVal is unchanged
- void GetReturn(int a_StackPos, AString & a_ReturnedVal);
-
- /// Retrieve value returned at a_StackPos, if it is a valid number. If not, a_ReturnedVal is unchanged
- void GetReturn(int a_StackPos, int & a_ReturnedVal);
-
- /// Retrieve value returned at a_StackPos, if it is a valid number. If not, a_ReturnedVal is unchanged
- void GetReturn(int a_StackPos, double & a_ReturnedVal);
-
/**
Calls the function that has been pushed onto the stack by PushFunction(),
with arguments pushed by PushXXX().
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-06 08:49:04 +0100