diff options
Diffstat (limited to 'src/Bindings/ManualBindings.h')
| -rw-r--r-- | src/Bindings/ManualBindings.h | 96 |
1 files changed, 90 insertions, 6 deletions
diff --git a/src/Bindings/ManualBindings.h b/src/Bindings/ManualBindings.h index 98e3e88ef..889e33664 100644 --- a/src/Bindings/ManualBindings.h +++ b/src/Bindings/ManualBindings.h @@ -41,6 +41,10 @@ protected: Implemented in ManualBindings_World.cpp. */ static void BindWorld(lua_State * tolua_S); + /** Binds the manually implemented cBlockArea API functions to tlua_S. + Implemented in ManualBindings_BlockArea.cpp. */ + static void BindBlockArea(lua_State * tolua_S); + public: // Helper functions: @@ -48,6 +52,11 @@ public: static int tolua_do_error(lua_State * L, const char * a_pMsg, tolua_Error * a_pToLuaError); static int lua_do_error(lua_State * L, const char * a_pFormat, ...); + /** Formats and prints the message, prefixed with the current function name, then logs the stack contents and raises a Lua error. + To be used for bindings when they detect bad parameters. + Doesn't return, but a dummy return type is provided so that Lua API functions may do "return ApiParamError(...)". */ + static int ApiParamError(lua_State * a_LuaState, const char * a_MsgFormat, ...); + /** Binds the DoWith(ItemName) functions of regular classes. */ template < @@ -243,10 +252,11 @@ public: + /** Template for the bindings for the DoWithXYZAt(X, Y, Z) functions that don't need to check their coords. */ template < - class Ty1, - class Ty2, - bool (Ty1::*DoWithFn)(int, int, int, cItemCallback<Ty2> &) + class SELF, + class ITEM, + bool (SELF::*DoWithFn)(int, int, int, cItemCallback<ITEM> &) > static int DoWithXYZ(lua_State * tolua_S) { @@ -262,7 +272,7 @@ public: } // Get parameters: - Ty1 * Self = nullptr; + SELF * Self = nullptr; int BlockX = 0; int BlockY = 0; int BlockZ = 0; @@ -277,7 +287,7 @@ public: return lua_do_error(tolua_S, "Error in function call '#funcname#': Expected a valid callback function for parameter #5"); } - class cLuaCallback : public cItemCallback<Ty2> + class cLuaCallback : public cItemCallback<ITEM> { public: cLuaCallback(cLuaState & a_LuaState, cLuaState::cRef & a_FnRef): @@ -287,7 +297,81 @@ public: } private: - virtual bool Item(Ty2 * a_Item) override + virtual bool Item(ITEM * a_Item) override + { + bool ret = false; + m_LuaState.Call(m_FnRef, a_Item, cLuaState::Return, ret); + return ret; + } + cLuaState & m_LuaState; + cLuaState::cRef & m_FnRef; + } Callback(L, FnRef); + + // Call the DoWith function: + bool res = (Self->*DoWithFn)(BlockX, BlockY, BlockZ, Callback); + + // Push the result as the return value: + L.Push(res); + return 1; + } + + + + + + /** Template for the bindings for the DoWithXYZAt(X, Y, Z) functions that need to check their coords. */ + template < + class SELF, + class ITEM, + bool (SELF::*DoWithFn)(int, int, int, cItemCallback<ITEM> &), + bool (SELF::*CoordCheckFn)(int, int, int) const + > + static int DoWithXYZ(lua_State * tolua_S) + { + // Check params: + cLuaState L(tolua_S); + if ( + !L.CheckParamNumber(2, 4) || + !L.CheckParamFunction(5) || + !L.CheckParamEnd(6) + ) + { + return 0; + } + + // Get parameters: + SELF * Self = nullptr; + int BlockX = 0; + int BlockY = 0; + int BlockZ = 0; + cLuaState::cRef FnRef; + L.GetStackValues(1, Self, BlockX, BlockY, BlockZ, FnRef); + if (Self == nullptr) + { + return lua_do_error(tolua_S, "Error in function call '#funcname#': Invalid 'self'"); + } + if (!FnRef.IsValid()) + { + return lua_do_error(tolua_S, "Error in function call '#funcname#': Expected a valid callback function for parameter #5"); + } + if (!(Self->*CoordCheckFn)(BlockX, BlockY, BlockZ)) + { + return lua_do_error(tolua_S, Printf("Error in function call '#funcname#': The provided coordinates ({%d, %d, %d}) are not valid", + BlockX, BlockY, BlockZ + ).c_str()); + } + + class cLuaCallback : public cItemCallback<ITEM> + { + public: + cLuaCallback(cLuaState & a_LuaState, cLuaState::cRef & a_FnRef): + m_LuaState(a_LuaState), + m_FnRef(a_FnRef) + { + } + + private: + virtual bool Item(ITEM * a_Item) override { bool ret = false; m_LuaState.Call(m_FnRef, a_Item, cLuaState::Return, ret); |