GamePlay/gameplay/src/lua/lua_AIStateMachine.cpp

#include "Base.h"
#include "ScriptController.h"
#include "lua_AIStateMachine.h"
#include "AIAgent.h"
#include "AIMessage.h"
#include "AIStateMachine.h"
#include "Base.h"
#include "Game.h"

namespace gameplay
{

void luaRegister_AIStateMachine()
{
    const luaL_Reg lua_members[] = 
    {
        {"addState", lua_AIStateMachine_addState},
        {"getActiveState", lua_AIStateMachine_getActiveState},
        {"getAgent", lua_AIStateMachine_getAgent},
        {"getState", lua_AIStateMachine_getState},
        {"removeState", lua_AIStateMachine_removeState},
        {"setState", lua_AIStateMachine_setState},
        {NULL, NULL}
    };
    const luaL_Reg* lua_statics = NULL;
    std::vector<std::string> scopePath;

    ScriptUtil::registerClass("AIStateMachine", lua_members, NULL, NULL, lua_statics, scopePath);
}

static AIStateMachine* getInstance(lua_State* state)
{
    void* userdata = luaL_checkudata(state, 1, "AIStateMachine");
    luaL_argcheck(state, userdata != NULL, 1, "'AIStateMachine' expected.");
    return (AIStateMachine*)((ScriptUtil::LuaObject*)userdata)->instance;
}

int lua_AIStateMachine_addState(lua_State* state)
{
    // Get the number of parameters.
    int paramCount = lua_gettop(state);

    // Attempt to match the parameters to a valid binding.
    switch (paramCount)
    {
        case 2:
        {
            if ((lua_type(state, 1) == LUA_TUSERDATA) &&
                (lua_type(state, 2) == LUA_TSTRING || lua_type(state, 2) == LUA_TNIL))
            {
                // Get parameter 1 off the stack.
                const char* param1 = ScriptUtil::getString(2, false);

                AIStateMachine* instance = getInstance(state);
                void* returnPtr = (void*)instance->addState(param1);
                if (returnPtr)
                {
                    ScriptUtil::LuaObject* object = (ScriptUtil::LuaObject*)lua_newuserdata(state, sizeof(ScriptUtil::LuaObject));
                    object->instance = returnPtr;
                    object->owns = false;
                    luaL_getmetatable(state, "AIState");
                    lua_setmetatable(state, -2);
                }
                else
                {
                    lua_pushnil(state);
                }

                return 1;
            }
            else if ((lua_type(state, 1) == LUA_TUSERDATA) &&
                (lua_type(state, 2) == LUA_TUSERDATA || lua_type(state, 2) == LUA_TTABLE || lua_type(state, 2) == LUA_TNIL))
            {
                // Get parameter 1 off the stack.
                AIState* param1 = ScriptUtil::getObjectPointer<AIState>(2, "AIState", false);

                AIStateMachine* instance = getInstance(state);
                instance->addState(param1);
                
                return 0;
            }
            else
            {
                lua_pushstring(state, "lua_AIStateMachine_addState - Failed to match the given parameters to a valid function signature.");
                lua_error(state);
            }
            break;
        }
        default:
        {
            lua_pushstring(state, "Invalid number of parameters (expected 2).");
            lua_error(state);
            break;
        }
    }
    return 0;
}

int lua_AIStateMachine_getActiveState(lua_State* state)
{
    // Get the number of parameters.
    int paramCount = lua_gettop(state);

    // Attempt to match the parameters to a valid binding.
    switch (paramCount)
    {
        case 1:
        {
            if ((lua_type(state, 1) == LUA_TUSERDATA))
            {
                AIStateMachine* instance = getInstance(state);
                void* returnPtr = (void*)instance->getActiveState();
                if (returnPtr)
                {
                    ScriptUtil::LuaObject* object = (ScriptUtil::LuaObject*)lua_newuserdata(state, sizeof(ScriptUtil::LuaObject));
                    object->instance = returnPtr;
                    object->owns = false;
                    luaL_getmetatable(state, "AIState");
                    lua_setmetatable(state, -2);
                }
                else
                {
                    lua_pushnil(state);
                }

                return 1;
            }
            else
            {
                lua_pushstring(state, "lua_AIStateMachine_getActiveState - Failed to match the given parameters to a valid function signature.");
                lua_error(state);
            }
            break;
        }
        default:
        {
            lua_pushstring(state, "Invalid number of parameters (expected 1).");
            lua_error(state);
            break;
        }
    }
    return 0;
}

int lua_AIStateMachine_getAgent(lua_State* state)
{
    // Get the number of parameters.
    int paramCount = lua_gettop(state);

    // Attempt to match the parameters to a valid binding.
    switch (paramCount)
    {
        case 1:
        {
            if ((lua_type(state, 1) == LUA_TUSERDATA))
            {
                AIStateMachine* instance = getInstance(state);
                void* returnPtr = (void*)instance->getAgent();
                if (returnPtr)
                {
                    ScriptUtil::LuaObject* object = (ScriptUtil::LuaObject*)lua_newuserdata(state, sizeof(ScriptUtil::LuaObject));
                    object->instance = returnPtr;
                    object->owns = false;
                    luaL_getmetatable(state, "AIAgent");
                    lua_setmetatable(state, -2);
                }
                else
                {
                    lua_pushnil(state);
                }

                return 1;
            }
            else
            {
                lua_pushstring(state, "lua_AIStateMachine_getAgent - Failed to match the given parameters to a valid function signature.");
                lua_error(state);
            }
            break;
        }
        default:
        {
            lua_pushstring(state, "Invalid number of parameters (expected 1).");
            lua_error(state);
            break;
        }
    }
    return 0;
}

int lua_AIStateMachine_getState(lua_State* state)
{
    // Get the number of parameters.
    int paramCount = lua_gettop(state);

    // Attempt to match the parameters to a valid binding.
    switch (paramCount)
    {
        case 2:
        {
            if ((lua_type(state, 1) == LUA_TUSERDATA) &&
                (lua_type(state, 2) == LUA_TSTRING || lua_type(state, 2) == LUA_TNIL))
            {
                // Get parameter 1 off the stack.
                const char* param1 = ScriptUtil::getString(2, false);

                AIStateMachine* instance = getInstance(state);
                void* returnPtr = (void*)instance->getState(param1);
                if (returnPtr)
                {
                    ScriptUtil::LuaObject* object = (ScriptUtil::LuaObject*)lua_newuserdata(state, sizeof(ScriptUtil::LuaObject));
                    object->instance = returnPtr;
                    object->owns = false;
                    luaL_getmetatable(state, "AIState");
                    lua_setmetatable(state, -2);
                }
                else
                {
                    lua_pushnil(state);
                }

                return 1;
            }
            else
            {
                lua_pushstring(state, "lua_AIStateMachine_getState - Failed to match the given parameters to a valid function signature.");
                lua_error(state);
            }
            break;
        }
        default:
        {
            lua_pushstring(state, "Invalid number of parameters (expected 2).");
            lua_error(state);
            break;
        }
    }
    return 0;
}

int lua_AIStateMachine_removeState(lua_State* state)
{
    // Get the number of parameters.
    int paramCount = lua_gettop(state);

    // Attempt to match the parameters to a valid binding.
    switch (paramCount)
    {
        case 2:
        {
            if ((lua_type(state, 1) == LUA_TUSERDATA) &&
                (lua_type(state, 2) == LUA_TUSERDATA || lua_type(state, 2) == LUA_TTABLE || lua_type(state, 2) == LUA_TNIL))
            {
                // Get parameter 1 off the stack.
                AIState* param1 = ScriptUtil::getObjectPointer<AIState>(2, "AIState", false);

                AIStateMachine* instance = getInstance(state);
                instance->removeState(param1);
                
                return 0;
            }
            else
            {
                lua_pushstring(state, "lua_AIStateMachine_removeState - Failed to match the given parameters to a valid function signature.");
                lua_error(state);
            }
            break;
        }
        default:
        {
            lua_pushstring(state, "Invalid number of parameters (expected 2).");
            lua_error(state);
            break;
        }
    }
    return 0;
}

int lua_AIStateMachine_setState(lua_State* state)
{
    // Get the number of parameters.
    int paramCount = lua_gettop(state);

    // Attempt to match the parameters to a valid binding.
    switch (paramCount)
    {
        case 2:
        {
            if ((lua_type(state, 1) == LUA_TUSERDATA) &&
                (lua_type(state, 2) == LUA_TSTRING || lua_type(state, 2) == LUA_TNIL))
            {
                // Get parameter 1 off the stack.
                const char* param1 = ScriptUtil::getString(2, false);

                AIStateMachine* instance = getInstance(state);
                void* returnPtr = (void*)instance->setState(param1);
                if (returnPtr)
                {
                    ScriptUtil::LuaObject* object = (ScriptUtil::LuaObject*)lua_newuserdata(state, sizeof(ScriptUtil::LuaObject));
                    object->instance = returnPtr;
                    object->owns = false;
                    luaL_getmetatable(state, "AIState");
                    lua_setmetatable(state, -2);
                }
                else
                {
                    lua_pushnil(state);
                }

                return 1;
            }
            else if ((lua_type(state, 1) == LUA_TUSERDATA) &&
                (lua_type(state, 2) == LUA_TUSERDATA || lua_type(state, 2) == LUA_TTABLE || lua_type(state, 2) == LUA_TNIL))
            {
                // Get parameter 1 off the stack.
                AIState* param1 = ScriptUtil::getObjectPointer<AIState>(2, "AIState", false);

                AIStateMachine* instance = getInstance(state);
                bool result = instance->setState(param1);

                // Push the return value onto the stack.
                lua_pushboolean(state, result);

                return 1;
            }
            else
            {
                lua_pushstring(state, "lua_AIStateMachine_setState - Failed to match the given parameters to a valid function signature.");
                lua_error(state);
            }
            break;
        }
        default:
        {
            lua_pushstring(state, "Invalid number of parameters (expected 2).");
            lua_error(state);
            break;
        }
    }
    return 0;
}

}