关于C#：C – 在非结构或联合的东西中请求成员’x’

C - request for member ‘x’ in something not a structure or union

本问题已经有最佳答案，请猛点这里访问。

上下文：我正在尝试对一个叫做GrandTheftAutoV的游戏做一些修改。

我正在使用GET_ENTITY_COORDS函数获取游戏中实体的坐标：

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static Inline struct Vector3 GET_ENTITY_COORDS(Entity entity, BOOL alive) {
args[0] = entity;
args[1] = alive;
invokeNative(0x3FEF770D40960D5A);
struct Vector3 vector3 = { *(float*)&rets[0], *(float*)&rets[1], *(float*)&rets[2] };
return vector3;
}

这应该返回xPos、yPos和zPos。

这就是我目前正在努力解决的代码：

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#include"gta.h"

void invokeNative_s(u64 hash) {
struct Native_s** g_Natives = (struct Native_s**)NativeTableAddress;
struct Native_s* Natives = g_Natives[hash & 0xFF];
while (Natives != 0) {
for (unsigned int i = 0; i < Natives->NativeCount; i++) {
if (Natives->NativeHashes[i] == hash) {
((void(*)(struct NativeArg_s*))Natives->NativeFunctions[i])((struct NativeArg_s*)FreeSpaceAddress);
return;
}
}
Natives = Natives->LastNativeTable;
}
}

struct gtaVars_s {
BOOL init;
int frameCount;
};

static struct gtaVars_s *gtaVars = (struct gtaVars_s*)FreeSpaceAddress+0x100;

BOOL nativeHook() {
if (!gtaVars->init) {
nativeArg->ArgValues = args;
nativeArg->ReturnValue = rets;
gtaVars->frameCount = 0;
gtaVars->init = TRUE;
}

int newFrameCount = GET_FRAME_COUNT();
if (gtaVars->frameCount < newFrameCount) {
gtaVars->frameCount = newFrameCount;

Ped pedID = PLAYER_PED_ID();
Player playerID = PLAYER_ID();

/* define player coords */
Vector3 playerCoords = GET_ENTITY_COORDS(pedID, 1);
char waterRadius = 10;

SET_SUPER_JUMP_THIS_FRAME(playerID);
SET_PLAYER_INVINCIBLE(playerID, TRUE);

if (IS_CONTROL_JUST_PRESSED(0, Button_Tpad)) {
// teleport to beach
SET_ENTITY_COORDS(pedID, -1374.881, -1398.835, 6.141, FALSE, FALSE, FALSE, TRUE);

// set water
MODIFY_WATER(playerCoords.x, playerCoords.y, waterRadius, 10);
MODIFY_WATER(playerCoords.x+2, playerCoords.y, waterRadius, 10);
MODIFY_WATER(playerCoords.x, playerCoords.y+2, waterRadius, 10);
MODIFY_WATER(playerCoords.x+2, playerCoords.y+2, waterRadius, 10);
MODIFY_WATER(playerCoords.x+4, playerCoords.y, waterRadius, 10);
MODIFY_WATER(playerCoords.x, playerCoords.y+4, waterRadius, 10);
MODIFY_WATER(playerCoords.x+4, playerCoords.y+4, waterRadius, 10);
MODIFY_WATER(playerCoords.x+6, playerCoords.y, waterRadius, 10);
MODIFY_WATER(playerCoords.x, playerCoords.y+6, waterRadius, 10);
MODIFY_WATER(playerCoords.x+6, playerCoords.y+6, waterRadius, 10);
MODIFY_WATER(playerCoords.x+8, playerCoords.y, waterRadius, 10);
MODIFY_WATER(playerCoords.x, playerCoords.y+8, waterRadius, 10);
MODIFY_WATER(playerCoords.x+8, playerCoords.y+8, waterRadius, 10);
}
}

return TRUE;
}

但我从GET_ENTITY_COORDS函数中得到了多个错误，尽管我在脚本中定义了上述函数：

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source/gta.c:42:3: error: unknown type name ‘Vector3’
Vector3 playerCoords = GET_ENTITY_COORDS(pedID, 1);
^
source/gta.c:42:26: error: incompatible types when initializing type ‘int’ using type ‘struct Vector3’
Vector3 playerCoords = GET_ENTITY_COORDS(pedID, 1);
^
source/gta.c:53:29: error: request for member ‘x’ in something not a structure or union

有人知道这个错误的原因是什么吗？我该如何修复它？我会非常感激，因为我已经为此挣扎了好几天，我很想看到它解决了，提前谢谢你。