/******************************************************************************************* * * raylib [core] example - 3d camera first person * * Example complexity rating: [★★☆☆] 2/4 * * Example originally created with raylib 1.3, last time updated with raylib 1.3 * * Example licensed under an unmodified zlib/libpng license, which is an OSI-certified, * BSD-like license that allows static linking with closed source software * * Copyright (c) 2015-2025 Ramon Santamaria (@raysan5) * ********************************************************************************************/ namespace Examples.Core; public partial class Camera3dFirstPerson : IExample { public const int MaxColumns = 20; private const int screenWidth = 800; private const int screenHeight = 450; public string Name => "Core / Camera 3D First Person"; public string Title => "raylib [core] example - 3d camera first person"; public bool CursorDisabled => true; private Camera3D camera; private CameraMode cameraMode; private float[] heights; private Vector3[] positions; private Color[] colors; public void Init() { // Define the camera to look into our 3d world (position, target, up vector) camera = new(); camera.Position = new Vector3(0.0f, 2.0f, 4.0f); // Camera position camera.Target = new Vector3(0.0f, 2.0f, 0.0f); // Camera looking at point camera.Up = new Vector3(0.0f, 1.0f, 0.0f); // Camera up vector (rotation towards target) camera.FovY = 60.0f; // Camera field-of-view Y camera.Projection = CameraProjection.Perspective; // Camera projection type cameraMode = CameraMode.FirstPerson; // Generates some random columns heights = new float[MaxColumns]; positions = new Vector3[MaxColumns]; colors = new Color[MaxColumns]; for (var i = 0; i < MaxColumns; i++) { heights[i] = (float)GetRandomValue(1, 12); positions[i] = new Vector3(GetRandomValue(-15, 15), heights[i] / 2.0f, GetRandomValue(-15, 15)); colors[i] = new Color(GetRandomValue(20, 255), GetRandomValue(10, 55), 30, 255); } } public void Update() { // Update //---------------------------------------------------------------------------------- // Switch camera mode if (IsKeyPressed(KeyboardKey.One)) { cameraMode = CameraMode.Free; camera.Up = new Vector3(0.0f, 1.0f, 0.0f); } if (IsKeyPressed(KeyboardKey.Two)) { cameraMode = CameraMode.FirstPerson; camera.Up = new Vector3(0.0f, 1.0f, 0.0f); } if (IsKeyPressed(KeyboardKey.Three)) { cameraMode = CameraMode.ThirdPerson; camera.Up = new Vector3(0.0f, 1.0f, 0.0f); } if (IsKeyPressed(KeyboardKey.Four)) { cameraMode = CameraMode.Orbital; camera.Up = new Vector3(0.0f, 1.0f, 0.0f); } // Switch camera projection if (IsKeyPressed(KeyboardKey.P)) { if (camera.Projection == CameraProjection.Perspective) { // Create isometric view cameraMode = CameraMode.ThirdPerson; // Note: The target distance is related to the render distance in the orthographic projection camera.Position = new Vector3(0.0f, 2.0f, -100.0f); camera.Target = new Vector3(0.0f, 2.0f, 0.0f); camera.Up = new Vector3(0.0f, 1.0f, 0.0f); camera.Projection = CameraProjection.Orthographic; camera.FovY = 20.0f; // near plane width in CAMERA_ORTHOGRAPHIC // CameraYaw(&camera, -135 * DEG2RAD, true); // CameraPitch(&camera, -45 * DEG2RAD, true, true, false); } else if (camera.Projection == CameraProjection.Orthographic) { // Reset to default view cameraMode = CameraMode.ThirdPerson; camera.Position = new Vector3(0.0f, 2.0f, 10.0f); camera.Target = new Vector3(0.0f, 2.0f, 0.0f); camera.Up = new Vector3(0.0f, 1.0f, 0.0f); camera.Projection = CameraProjection.Perspective; camera.FovY = 60.0f; } } // Update camera computes movement internally depending on the camera mode // Some default standard keyboard/mouse inputs are hardcoded to simplify use // For advanced camera controls, it's recommended to compute camera movement manually UpdateCamera(ref camera, cameraMode); // Update camera //---------------------------------------------------------------------------------- // Draw //---------------------------------------------------------------------------------- BeginDrawing(); ClearBackground(Color.RayWhite); BeginMode3D(camera); // Draw ground DrawPlane(new Vector3(0.0f, 0.0f, 0.0f), new Vector2(32.0f, 32.0f), Color.LightGray); // Draw a blue wall DrawCube(new Vector3(-16.0f, 2.5f, 0.0f), 1.0f, 5.0f, 32.0f, Color.Blue); // Draw a green wall DrawCube(new Vector3(16.0f, 2.5f, 0.0f), 1.0f, 5.0f, 32.0f, Color.Lime); // Draw a yellow wall DrawCube(new Vector3(0.0f, 2.5f, 16.0f), 32.0f, 5.0f, 1.0f, Color.Gold); // Draw some cubes around for (var i = 0; i < MaxColumns; i++) { DrawCube(positions[i], 2.0f, heights[i], 2.0f, colors[i]); DrawCubeWires(positions[i], 2.0f, heights[i], 2.0f, Color.Maroon); } // Draw player cube if (cameraMode == CameraMode.ThirdPerson) { DrawCube(camera.Target, 0.5f, 0.5f, 0.5f, Color.Purple); DrawCubeWires(camera.Target, 0.5f, 0.5f, 0.5f, Color.DarkPurple); } EndMode3D(); // Draw info boxes DrawRectangle(5, 5, 330, 100, Fade(Color.SkyBlue, 0.5f)); DrawRectangleLines(5, 5, 330, 100, Color.Blue); DrawText("Camera controls:", 15, 15, 10, Color.Black); DrawText("- Move keys: W, A, S, D, Space, Left-Ctrl", 15, 30, 10, Color.Black); DrawText("- Look around: arrow keys or mouse", 15, 45, 10, Color.Black); DrawText("- Camera mode keys: 1, 2, 3, 4", 15, 60, 10, Color.Black); DrawText("- Zoom keys: num-plus, num-minus or mouse scroll", 15, 75, 10, Color.Black); DrawText("- Camera projection key: P", 15, 90, 10, Color.Black); DrawRectangle(600, 5, 195, 100, Fade(Color.SkyBlue, 0.5f)); DrawRectangleLines(600, 5, 195, 100, Color.Blue); DrawText("Camera status:", 610, 15, 10, Color.Black); DrawText($"- Mode: {cameraMode}", 610, 30, 10, Color.Black); DrawText($"- Projection: {camera.Projection}", 610, 45, 10, Color.Black); DrawText($"- Position: {camera.Position}", 610, 60, 10, Color.Black); DrawText($"- Target: {camera.Target}", 610, 75, 10, Color.Black); DrawText($"- Up: {camera.Up}", 610, 90, 10, Color.Black); EndDrawing(); //---------------------------------------------------------------------------------- } public void Unload() { } public static int Main() { // Initialization //-------------------------------------------------------------------------------------- InitWindow(screenWidth, screenHeight, "raylib [core] example - 3d camera first person"); DisableCursor(); // Limit cursor to relative movement inside the window SetTargetFPS(60); // Set our game to run at 60 frames-per-second //-------------------------------------------------------------------------------------- var game = new Camera3dFirstPerson(); game.Init(); // Main game loop while (!WindowShouldClose()) // Detect window close button or ESC key { game.Update(); } game.Unload(); // De-Initialization //-------------------------------------------------------------------------------------- CloseWindow(); // Close window and OpenGL context //-------------------------------------------------------------------------------------- return 0; } }