How to use the raylib.Vector2 function in raylib

while (!r.WindowShouldClose())                // Detect window close button or ESC key
{
    // Update
    //----------------------------------------------------------------------------------
    r.UpdateCamera(camera);                  // Update camera
    //----------------------------------------------------------------------------------

    // Draw
    //----------------------------------------------------------------------------------
    r.BeginDrawing();

        r.ClearBackground(r.RAYWHITE);

        r.BeginMode3D(camera);

            r.DrawPlane(r.Vector3(), r.Vector2(32, 32), r.LIGHTGRAY); // Draw ground
            r.DrawCube(r.Vector3(-16, 2.5, 0), 1, 5, 32, r.BLUE);     // Draw a blue wall
            r.DrawCube(r.Vector3(16, 2.5, 0), 1, 5, 32, r.LIME);      // Draw a green wall
            r.DrawCube(r.Vector3(0, 2.5, 16), 32, 5, 1, r.GOLD);      // Draw a yellow wall

            // Draw some cubes around
            for (let i = 0; i < MAX_COLUMNS; i++)
            {
                r.DrawCube(positions[i], 2, heights[i], 2, colors[i]);
                r.DrawCubeWires(positions[i], 2, heights[i], 2, r.MAROON);
            }

        r.EndMode3D();

        r.DrawRectangle( 10, 10, 220, 70, r.Fade(r.SKYBLUE, 0.5));
        r.DrawRectangleLines( 10, 10, 220, 70, r.BLUE);

for (let i = 0; i < MAX_BUILDINGS; i++)
{
  let height = r.GetRandomValue(100, 800)
  let newBuilding = r.Rectangle(
    -6000 + spacing,
    screenHeight - 130 - height,
    r.GetRandomValue(50, 200),
    height
  )
  spacing += newBuilding.width;
  buildings.push(newBuilding)
  buildColors.push(r.Color(r.GetRandomValue(200, 240), r.GetRandomValue(200, 240), r.GetRandomValue(200, 250), 255))
}

const camera = r.Camera2D(
  r.Vector2(),
  r.Vector2(player.x + 20, player.y + 20),
  0, 1)

r.SetTargetFPS(60);                   // Set our game to run at 60 frames-per-second
//--------------------------------------------------------------------------------------

// Main game loop
while (!r.WindowShouldClose())        // Detect window close button or ESC key
{
  // Update
  //----------------------------------------------------------------------------------
  if (r.IsKeyDown(r.KEY_RIGHT))
  {
      player.x += 2;              // Player movement
      camera.offset.x -= 2;       // Camera displacement with player movement
  }

{
  // Update
  //----------------------------------------------------------------------------------
  if (r.IsKeyDown(r.KEY_RIGHT))
  {
      player.x += 2;              // Player movement
      camera.offset.x -= 2;       // Camera displacement with player movement
  }
  else if (r.IsKeyDown(r.KEY_LEFT))
  {
      player.x -= 2;              // Player movement
      camera.offset.x += 2;       // Camera displacement with player movement
  }

  // Camera target follows player
  camera.target = r.Vector2(player.x + 20, player.y + 20)

  // Camera rotation controls
  if (r.IsKeyDown(r.KEY_A)) {
    camera.rotation--;
  }
  else if (r.IsKeyDown(r.KEY_S)) {
    camera.rotation++;
  }

  // Limit camera rotation to 80 degrees (-40 to 40)
  if (camera.rotation > 40) {
    camera.rotation = 40
  }
  else if (camera.rotation < -40) {
    camera.rotation = -40
  }

const screenWidth = 800;
const screenHeight = 450;

r.InitWindow(screenWidth, screenHeight, "raylib [core] example - 3d camera free")

// Define the camera to look into our 3d world
const camera = r.Camera(
  r.Vector3(10, 10, 10),
  r.Vector3(0, 0, 0),
  r.Vector3(0, 1, 0),
  45,
  r.CAMERA_PERSPECTIVE
)

const cubePosition = r.Vector3()
let cubeScreenPosition = r.Vector2()

r.SetCameraMode(camera, r.CAMERA_FREE); // Set a free camera mode

r.SetTargetFPS(60);                   // Set our game to run at 60 frames-per-second
//--------------------------------------------------------------------------------------

// Main game loop
while (!r.WindowShouldClose())        // Detect window close button or ESC key
{
    // Update
    //----------------------------------------------------------------------------------
    r.UpdateCamera(camera);          // Update camera

    // Calculate cube screen space position (with a little offset to be in top)
    const cubePositionVector = r.Vector3(cubePosition.x, cubePosition.y + 2.5, cubePosition.z)
    cubeScreenPosition = r.GetWorldToScreen(cubePositionVector, camera)

*   raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
*
*   Copyright (c) 2014 Ramon Santamaria (@raysan5)
*
********************************************************************************************/

const r = require('raylib')

// Initialization
//--------------------------------------------------------------------------------------
const screenWidth = 800
const screenHeight = 450

r.InitWindow(screenWidth, screenHeight, "raylib [core] example - mouse input")

var ballPosition = r.Vector2(-100, -100)
var ballColor = r.DARKBLUE

r.SetTargetFPS(60)
//---------------------------------------------------------------------------------------

// Main game loop
while (!r.WindowShouldClose())    // Detect window close button or ESC key
{
    // Update
    //----------------------------------------------------------------------------------
    ballPosition = r.GetMousePosition()

    if (r.IsMouseButtonPressed(r.MOUSE_LEFT_BUTTON)) {
        ballColor = r.MAROON
    }
    else if (r.IsMouseButtonPressed(r.MOUSE_MIDDLE_BUTTON)) {

{
  let height = r.GetRandomValue(100, 800)
  let newBuilding = r.Rectangle(
    -6000 + spacing,
    screenHeight - 130 - height,
    r.GetRandomValue(50, 200),
    height
  )
  spacing += newBuilding.width;
  buildings.push(newBuilding)
  buildColors.push(r.Color(r.GetRandomValue(200, 240), r.GetRandomValue(200, 240), r.GetRandomValue(200, 250), 255))
}

const camera = r.Camera2D(
  r.Vector2(),
  r.Vector2(player.x + 20, player.y + 20),
  0, 1)

r.SetTargetFPS(60);                   // Set our game to run at 60 frames-per-second
//--------------------------------------------------------------------------------------

// Main game loop
while (!r.WindowShouldClose())        // Detect window close button or ESC key
{
  // Update
  //----------------------------------------------------------------------------------
  if (r.IsKeyDown(r.KEY_RIGHT))
  {
      player.x += 2;              // Player movement
      camera.offset.x -= 2;       // Camera displacement with player movement
  }
  else if (r.IsKeyDown(r.KEY_LEFT))