这个问题在这里已有答案：
当我尝试构建我的程序时，我收到此错误：
error LNK2019: unresolved external symbol "bool __cdecl TextGame::spaceVoid(struct TextGame::Position const &,struct TextGame::RoomData const &)" (?spaceVoid@TextGame@@YA_NABUPosition@1@ABURoomData@1@@Z) referenced in function "void __cdecl TextGame::UpdateGame(struct TextGame::PlayerState &,struct TextGame::WorldState &)" (?UpdateGame@TextGame@@YAXAAUPlayerState@1@AAUWorldState@1@@Z)
这是一个基本的ASCII地牢爬虫。我是一个参加大学课程的相对新手。现在我们只是跟随1对1的视频，所以我不完全确定错误在哪里。显然，它似乎想要一些关于Position（房间中物体的坐标）和RoomData（房间的属性）的定义。但我完全失去了什么。对不起，我不能更具体 - 请告诉我是否有我可以提供的额外信息。
namespace TextGame
{
RoomData CreateRoom(const std::string& inName, const std::string& inDescription)
{
RoomData room = {};
room.Name = inName;
room.Description = inDescription;
return room;
}
void InitializeGame(PlayerState& playerState, WorldState& worldState)
{
printf("Welcome to...\n");
printf("A GAME by SOMEONE\n\n");
printf("TELL THE PLAYER THE GOAL OF THE GAME\n\n");
playerState.WantsDescription = true;
playerState.CurrentRoomIndex = 0;
playerState.CurrentPosition.X = 3;
playerState.CurrentPosition.Y = 4;
worldState.Rooms.clear();
// 0
{
RoomData room = CreateRoom("ROOM NAME", "ROOM DESCRIPTION");
room.RoomMapWidth = 10;
room.RoomPosition = { 0, 0 };
room.RoomMap =
"####.#####"
"#........#"
"#........#"
"#........."
"#........."
"#........#"
"#........#"
"##########";
room.Inventory.push_back({ ItemType_Key, {5,3} });
room.Inventory.push_back({ ItemType_Sword, {7,5} });
room.LockedDoors.push_back({ {4, 0} });
worldState.Rooms.push_back(room);
}
// 1
{
RoomData room = CreateRoom("ROOM NAME 1", "ROOM DESCRIPTION 1");
room.RoomMapWidth = 10;
room.RoomPosition = { 1, 0 };
room.RoomMap =
"##########"
"#........#"
"#........#"
".........#"
".........#"
"#........#"
"#........#"
"##########";
worldState.Rooms.push_back(room);
}
// 2
{
RoomData room = CreateRoom("ROOM NAME 2", "ROOM DESCRIPTION 2");
room.RoomMapWidth = 10;
room.RoomPosition = { 0, -1 };
room.RoomMap =
"####.#####"
"#........#"
"#........#"
"#........#"
"#........#"
"#........#"
"#........#"
"####..####";
worldState.Rooms.push_back(room);
}
// 3
{
RoomData room = CreateRoom("ROOM NAME 3", "ROOM DESCRIPTION 3");
room.RoomMapWidth = 10;
room.RoomPosition = { 0, -2 };
room.RoomMap =
"####..####"
"#........#"
"#........#"
"#........#"
"#........#"
"#........#"
"#........#"
"####..####";
worldState.Rooms.push_back(room);
}
// 4
{
RoomData room = CreateRoom("ROOM NAME 4", "ROOM DESCRIPTION 4");
room.RoomMapWidth = 10;
room.RoomPosition = { 0, -3 };
room.RoomMap =
"##########"
"#....A...#"
"#........#"
"#........#"
"#........#"
"#........#"
"#........#"
"####..####";
worldState.Rooms.push_back(room);
}
}
void GetInput(PlayerState& playerState, const WorldState& worldState)
{
playerState.WantsToExit = false;
playerState.WantsDescription = false;
playerState.WantsInventoryListed = false;
playerState.DesiredPosition = playerState.CurrentPosition;
playerState.WantsToGet = false;
//playerState.Inventory.push_back({ ItemType_Key, Position() });
//playerState.Inventory.push_back({ ItemType_Sword, Position() });
//playerState.Inventory.push_back({ ItemType_Key, Position() });
printf("What do you do?\n");
printf("> ");
TextAdventureCommand command = ParseAdventureCommand();
if (command.Verb == "quit")
{
playerState.WantsToExit = true;
}
else if (command.Verb == "north" || command.Verb == "w")
{
playerState.DesiredPosition.Y = playerState.DesiredPosition.Y - 1;
}
else if (command.Verb == "south" || command.Verb == "s")
{
playerState.DesiredPosition.Y = playerState.DesiredPosition.Y + 1;
}
else if (command.Verb == "west" || command.Verb == "a")
{
playerState.DesiredPosition.X = playerState.DesiredPosition.X - 1;
}
else if (command.Verb == "east" || command.Verb == "d")
{
playerState.DesiredPosition.X = playerState.DesiredPosition.X + 1;
}
else if (command.Verb == "look")
{
playerState.WantsDescription = true;
}
else if (command.Verb == "inventory" || command.Verb == "inv")
{
playerState.WantsInventoryListed = true;
}
else if (command.Verb == "get")
{
playerState.WantsToGet = true;
}
else if (command.Verb == "help")
{
printf("Command List: look, quit, inventory, get, w, a, s, d\n");
printf("Key:\n");
printf(" @ - Player\n");
printf(" A - Altar\n");
printf(" i - Item\n");
printf(" . - Floor\n");
printf(" # - Wall\n");
printf(" H - Door (Locked)\n");
}
else
{
printf("I don't understand\n");
}
printf("\n");
}
void RenderGame(const PlayerState& playerState, const WorldState& worldState)
{
if (playerState.WantsDescription)
{
const RoomData& currRoom = worldState.Rooms[playerState.CurrentRoomIndex];
printf("================================================\n");
printf("LOCATION: %s\n", currRoom.Name.c_str());
printf("%s\n\n", currRoom.Description.c_str());
std::string renderedMapString = "";
unsigned int currentSpace = 0;
while (currentSpace < currRoom.RoomMap.size())
{
char CharacterToDisplay = currRoom.RoomMap[currentSpace];
for (unsigned int i = 0; i < currRoom.Inventory.size(); ++i)
{
const InventoryItem& currItem = currRoom.Inventory[i];
if (PositionToIndex(currItem.ItemPosition, currRoom.RoomMapWidth) == currentSpace)
{
CharacterToDisplay = getItemIcon(currItem.Type);
}
}
for (unsigned int i = 0; i < currRoom.LockedDoors.size(); ++i)
{
const LockedDoorData& currDoor = currRoom.LockedDoors[i];
if (PositionToIndex(currDoor.DoorPosition, currRoom.RoomMapWidth) == currentSpace)
{
CharacterToDisplay = 'H';
}
}
//Set where the player is drawn based on the input X and Y coordinates
if (PositionToIndex(playerState.CurrentPosition, currRoom.RoomMapWidth) == currentSpace)
{
CharacterToDisplay = '@';
}
renderedMapString += CharacterToDisplay;
if (currentSpace % currRoom.RoomMapWidth == currRoom.RoomMapWidth - 1)
{
renderedMapString += "\n";
}
currentSpace++;
}
printf("%s\n", renderedMapString.c_str());
printf("\n");
}
else if (playerState.WantsInventoryListed)
{
printf("================================================\n");
printf("INVENTORY:\n");
if (playerState.Inventory.size() == 0)
{
printf("You're not carrying anything.\n");
}
else
{
for (unsigned int i = 0; i < playerState.Inventory.size(); ++i)
{
printf("%s\n", GetItemName(playerState.Inventory[i].Type).c_str());
}
}
printf("\n");
}
}
void UpdateGame(PlayerState& playerState, WorldState& worldState)
{
RoomData& currRoom = worldState.Rooms[playerState.CurrentRoomIndex];
if (playerState.DesiredPosition != playerState.CurrentPosition)
{
TryToUnlockDoor(playerState.DesiredPosition, currRoom, playerState);
if (spaceVoid(playerState.DesiredPosition, currRoom))
{
Position desiredRoomPosition = currRoom.RoomPosition;
int playerPositionType = 0;
if (playerState.DesiredPosition.X < 0)
{
desiredRoomPosition.X--;
playerPositionType = 1;
}
else if(playerState.DesiredPosition.X >= currRoom.RoomMapWidth)
{
desiredRoomPosition.X++;
playerPositionType = 2;
}
else if (playerState.DesiredPosition.Y < 0)
{
desiredRoomPosition.Y--;
playerPositionType = 3;
}
else if (playerState.DesiredPosition.Y >= ((int)currRoom.RoomMap.size() / currRoom.RoomMapWidth))
{
desiredRoomPosition.Y++;
playerPositionType = 4;
}
bool foundNewRoom = false;
for (unsigned int i = 0; i < worldState.Rooms.size(); ++i)
{
if (worldState.Rooms[i].RoomPosition == desiredRoomPosition)
{
playerState.CurrentRoomIndex = i;
playerState.WantsDescription = true;
switch (playerPositionType)
{
case 1:
playerState.CurrentPosition.X = worldState.Rooms[playerState.CurrentRoomIndex].RoomMapWidth - 1;
break;
case 2:
playerState.CurrentPosition.X = 0;
break;
case 3:
playerState.CurrentPosition.Y = (worldState.Rooms[playerState.CurrentRoomIndex].RoomMap.size() / worldState.Rooms[playerState.CurrentRoomIndex].RoomMapWidth) - 1;
break;
case 4:
playerState.CurrentPosition.Y = 0;
break;
}
foundNewRoom = true;
}
}
if (!foundNewRoom)
{
printf("It's just the void beyond this point.\n");
}
}
else if (spaceOpen(playerState.DesiredPosition, currRoom))
{
playerState.CurrentPosition = playerState.DesiredPosition;
playerState.WantsDescription = true;
}
else
{
printf("It's blocked.\n");
}
}
else if (playerState.WantsToGet)
{
bool foundItem = false;
for (unsigned int i = 0; i < currRoom.Inventory.size(); ++i)
{
const InventoryItem& currItem = currRoom.Inventory[i];
if (currItem.ItemPosition == playerState.CurrentPosition)
{
printf("Picked up a %s\n\n", GetItemName(currItem.Type).c_str());
playerState.Inventory.push_back(currItem);
currRoom.Inventory.erase(currRoom.Inventory.begin() + i);
foundItem = true;
break;
}
}
if (!foundItem)
{
printf("There's nothing her to pick up.\n\n");
}
}
}
void CleanupGame(PlayerState& playerState, WorldState& worldState)
{
worldState.Rooms.clear();
}
int PositionToIndex(const Position& position, int roomWidth)
{
return position.Y * roomWidth + position.X;
}
bool spaceOpen(const Position& position, const RoomData& currRoom)
{
for (unsigned int i = 0; i < currRoom.LockedDoors.size(); ++i)
{
const LockedDoorData& currDoor = currRoom.LockedDoors[i];
if (currDoor.DoorPosition == position)
{
return false;
}
}
int spaceIndex = PositionToIndex(position, currRoom.RoomMapWidth);
return currRoom.RoomMap[spaceIndex] == '.';
}
void TryToUnlockDoor(const Position& position, RoomData& currRoom, PlayerState& playerState)
{
for (unsigned int i = 0; i < currRoom.LockedDoors.size(); ++i)
{
const LockedDoorData& currDoor = currRoom.LockedDoors[i];
if (currDoor.DoorPosition == position)
{
//Door found, now find key
for (unsigned int j = 0; j < playerState.Inventory.size(); ++j)
{
const InventoryItem& currItem = playerState.Inventory[j];
if (currItem.Type == ItemType_Key)
{
//Key found
currRoom.LockedDoors.erase(currRoom.LockedDoors.begin() + i);
playerState.Inventory.erase(playerState.Inventory.begin() + j);
return;
}
}
}
}
}
bool spaceVoid(const Position& position, const RoomData& currRoom, PlayerState& playerState)
{
return position.X < 0 || position.X >= currRoom.RoomMapWidth || position.Y < 0 || position.Y >= ((int)currRoom.RoomMap.size() / currRoom.RoomMapWidth);
}
std::string GetItemName(ItemType itemType)
{
switch (itemType)
{
case ItemType_Key:
return "Key";
break;
case ItemType_Sword:
return "Sword";
break;
}
}
char getItemIcon(ItemType itemType)
{
switch (itemType)
{
case TextGame::ItemType_Key:
return 'k';
break;
case TextGame::ItemType_Sword:
return 's';
break;
}
}
}
链接器抱怨没有找到带有两个参数的spacevoid方法：
bool __cdecl TextGame::spaceVoid(struct TextGame::Position const &,struct TextGame::RoomData const &)
因为在你的代码中只有一个定义了三个参数的spacevoid方法：
bool spaceVoid(const Position& position, const RoomData& currRoom, PlayerState& playerState)
您需要确定哪一个是正确的，或者仅添加两个参数来添加额外的spacevoid方法。