C++：如何根据地形高度更新玩家高度？

#include <iostream>
#include <vector>

// 假设地形高度数据存储在一个二维数组中
std::vector<std::vector<float>> terrainHeightMap = {
    {0.0f, 1.0f, 2.0f},
    {1.0f, 2.0f, 1.0f},
    {2.0f, 1.0f, 0.0f}
};

// 获取地形高度
float GetTerrainHeightAt(float x, float z) {
    int gridX = static_cast<int>(x);
    int gridZ = static_cast<int>(z);
    // 简单的双线性插值
    float xFraction = x - gridX;
    float zFraction = z - gridZ;
    float h00 = terrainHeightMap[gridX][gridZ];
    float h10 = terrainHeightMap[gridX + 1][gridZ];
    float h01 = terrainHeightMap[gridX][gridZ + 1];
    float h11 = terrainHeightMap[gridX + 1][gridZ + 1];
    float h0 = h00 * (1 - xFraction) + h10 * xFraction;
    float h1 = h01 * (1 - xFraction) + h11 * xFraction;
    return h0 * (1 - zFraction) + h1 * zFraction;
}

// 更新玩家高度
void UpdatePlayerHeight(float &playerX, float &playerY, float &playerZ) {
    playerY = GetTerrainHeightAt(playerX, playerZ);
}

int main() {
    float playerX = 1.5f;
    float playerY = 0.0f;
    float playerZ = 1.5f;

    UpdatePlayerHeight(playerX, playerY, playerZ);

    std::cout << "Updated Player Height: " << playerY << std::endl;
    return 0;
}