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+/*******************************************************************************************
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+*
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+* raylib [models] example - basic voxel
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+*
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+* Example complexity rating: [★★☆☆] 2/4
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+*
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+* Example originally created with raylib 5.5, last time updated with raylib 5.5
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+*
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+* Example contributed by Tim Little (@timlittle) and reviewed by Ramon Santamaria (@raysan5)
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+*
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+* Example licensed under an unmodified zlib/libpng license, which is an OSI-certified,
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+* BSD-like license that allows static linking with closed source software
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+*
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+* Copyright (c) 2025 Tim Little (@timlittle)
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+*
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+********************************************************************************************/
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+
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+#include "raylib.h"
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+#include "raymath.h"
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+
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+#define WORLD_SIZE 8 // Size of our voxel world (8x8x8 cubes)
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+
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+//------------------------------------------------------------------------------------
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+// Program main entry point
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+//------------------------------------------------------------------------------------
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+int main(void)
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+{
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+ // Initialization
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+ //--------------------------------------------------------------------------------------
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+ const int screenWidth = 800;
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+ const int screenHeight = 450;
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+
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+ InitWindow(screenWidth, screenHeight, "raylib [models] example - basic voxel");
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+
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+ DisableCursor(); // Lock mouse to window center
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+
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+ // Define the camera to look into our 3d world (first person)
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+ Camera3D camera = { 0 };
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+ camera.position = (Vector3){ -2.0f, 0.0f, -2.0f }; // Camera position at ground level
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+ camera.target = (Vector3){ 0.0f, 0.0f, 0.0f }; // Camera looking at point
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+ camera.up = (Vector3){ 0.0f, 1.0f, 0.0f }; // Camera up vector
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+ camera.fovy = 45.0f; // Camera field-of-view Y
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+ camera.projection = CAMERA_PERSPECTIVE; // Camera projection type
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+
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+ // Create a cube model
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+ Mesh cubeMesh = GenMeshCube(1.0f, 1.0f, 1.0f); // Create a unit cube mesh
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+ Model cubeModel = LoadModelFromMesh(cubeMesh); // Convert mesh to a model
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+ cubeModel.materials[0].maps[MATERIAL_MAP_DIFFUSE].color = BEIGE;
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+
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+ // Initialize voxel world - fill with voxels
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+ bool voxels[WORLD_SIZE][WORLD_SIZE][WORLD_SIZE] = { false };
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+ for (int x = 0; x < WORLD_SIZE; x++)
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+ {
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+ for (int y = 0; y < WORLD_SIZE; y++)
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+ {
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+ for (int z = 0; z < WORLD_SIZE; z++)
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+ {
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+ voxels[x][y][z] = true;
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+ }
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+ }
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+ }
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+
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+ SetTargetFPS(60);
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+ //--------------------------------------------------------------------------------------
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+
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+ // Main game loop
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+ while (!WindowShouldClose()) // Detect window close button or ESC key
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+ {
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+ // Update
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+ //----------------------------------------------------------------------------------
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+ UpdateCamera(&camera, CAMERA_FIRST_PERSON);
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+
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+ // Handle voxel removal with mouse click
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+ if (IsMouseButtonPressed(MOUSE_LEFT_BUTTON))
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+ {
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+ // Cast a ray from the screen center (where crosshair would be)
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+ Vector2 screenCenter = { screenWidth/2.0f, screenHeight/2.0f };
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+ Ray ray = GetMouseRay(screenCenter, camera);
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+
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+ // Check ray collision with all voxels
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+ bool voxelRemoved = false;
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+ for (int x = 0; (x < WORLD_SIZE) && !voxelRemoved; x++)
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+ {
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+ for (int y = 0; (y < WORLD_SIZE) && !voxelRemoved; y++)
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+ {
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+ for (int z = 0; (z < WORLD_SIZE) && !voxelRemoved; z++)
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+ {
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+ if (!voxels[x][y][z]) continue; // Skip empty voxels
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+
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+ // Build a bounding box for this voxel
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+ Vector3 position = { x, y, z };
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+ BoundingBox box = {
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+ (Vector3){ position.x - 0.5f, position.y - 0.5f, position.z - 0.5f },
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+ (Vector3){ position.x + 0.5f, position.y + 0.5f, position.z + 0.5f }
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+ };
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+
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+ // Check ray-box collision
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+ RayCollision collision = GetRayCollisionBox(ray, box);
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+ if (collision.hit)
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+ {
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+ voxels[x][y][z] = false; // Remove this voxel
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+ voxelRemoved = true; // Exit all loops
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+ }
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+ }
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+ }
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+ }
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+ }
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+ //----------------------------------------------------------------------------------
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+
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+ // Draw
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+ //----------------------------------------------------------------------------------
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+ BeginDrawing();
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+
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+ ClearBackground(RAYWHITE);
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+
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+ BeginMode3D(camera);
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+
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+ DrawGrid(10, 1.0f);
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+
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+ // Draw all voxels
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+ for (int x = 0; x < WORLD_SIZE; x++)
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+ {
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+ for (int y = 0; y < WORLD_SIZE; y++)
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+ {
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+ for (int z = 0; z < WORLD_SIZE; z++)
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+ {
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+ if (!voxels[x][y][z]) continue;
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+
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+ Vector3 position = { x, y, z };
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+ DrawModel(cubeModel, position, 1.0f, BEIGE);
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+ DrawCubeWires(position, 1.0f, 1.0f, 1.0f, BLACK);
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+ }
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+ }
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+ }
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+
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+ EndMode3D();
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+
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+ DrawText("Left-click a voxel to remove it!", 10, 10, 20, DARKGRAY);
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+ DrawText("WASD to move, mouse to look around", 10, 35, 10, GRAY);
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+
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+ EndDrawing();
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+ //----------------------------------------------------------------------------------
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+ }
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+
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+ // De-Initialization
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+ //--------------------------------------------------------------------------------------
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+ UnloadModel(cubeModel);
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+ CloseWindow();
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+ //--------------------------------------------------------------------------------------
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+
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+ return 0;
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+}
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Tim Little
