feat: add skybox renderer: test it by dragging an image window into window, fix waypoint block pos

renderer/viewer/three/graphicsBackend.ts

@@ -47,6 +47,9 @@ const getBackendMethods = (worldRenderer: WorldRendererThree) => {
 
     addWaypoint: worldRenderer.waypoints.addWaypoint.bind(worldRenderer.waypoints),
     removeWaypoint: worldRenderer.waypoints.removeWaypoint.bind(worldRenderer.waypoints),
+
+    // New method for updating skybox
+    setSkyboxImage: worldRenderer.skyboxRenderer.setSkyboxImage.bind(worldRenderer.skyboxRenderer)
   }
 }
 

renderer/viewer/three/skyboxRenderer.ts

@@ -0,0 +1,77 @@
+import * as THREE from 'three'
+
+export class SkyboxRenderer {
+  private texture: THREE.Texture | null = null
+  private mesh: THREE.Mesh<THREE.SphereGeometry, THREE.MeshBasicMaterial> | null = null
+
+  constructor (private readonly scene: THREE.Scene, public initialImage: string | null) {}
+
+  async init () {
+    if (this.initialImage) {
+      await this.setSkyboxImage(this.initialImage)
+    }
+  }
+
+  async setSkyboxImage (imageUrl: string) {
+    // Dispose old textures if they exist
+    if (this.texture) {
+      this.texture.dispose()
+    }
+
+    // Load the equirectangular texture
+    const textureLoader = new THREE.TextureLoader()
+    this.texture = await new Promise((resolve) => {
+      textureLoader.load(
+        imageUrl,
+        (texture) => {
+          texture.mapping = THREE.EquirectangularReflectionMapping
+          texture.encoding = THREE.sRGBEncoding
+          // Keep pixelated look
+          texture.minFilter = THREE.NearestFilter
+          texture.magFilter = THREE.NearestFilter
+          texture.needsUpdate = true
+          resolve(texture)
+        }
+      )
+    })
+
+    // Create or update the skybox
+    if (this.mesh) {
+      // Just update the texture on the existing material
+      this.mesh.material.map = this.texture
+      this.mesh.material.needsUpdate = true
+    } else {
+      // Create a large sphere geometry for the skybox
+      const geometry = new THREE.SphereGeometry(500, 60, 40)
+      // Flip the geometry inside out
+      geometry.scale(-1, 1, 1)
+
+      // Create material using the loaded texture
+      const material = new THREE.MeshBasicMaterial({
+        map: this.texture,
+        side: THREE.FrontSide // Changed to FrontSide since we're flipping the geometry
+      })
+
+      // Create and add the skybox mesh
+      this.mesh = new THREE.Mesh(geometry, material)
+      this.scene.add(this.mesh)
+    }
+  }
+
+  update (cameraPosition: THREE.Vector3) {
+    if (this.mesh) {
+      this.mesh.position.copy(cameraPosition)
+    }
+  }
+
+  dispose () {
+    if (this.texture) {
+      this.texture.dispose()
+    }
+    if (this.mesh) {
+      this.mesh.geometry.dispose()
+      ;(this.mesh.material as THREE.Material).dispose()
+      this.scene.remove(this.mesh)
+    }
+  }
+}

renderer/viewer/three/waypoints.ts

@@ -85,7 +85,7 @@ export class WaypointsRenderer {
     this.waypointScene.add(sprite.group)
 
     this.waypoints.set(id, {
-      id, x, y, z, minDistance,
+      id, x: x + 0.5, y: y + 0.5, z: z + 0.5, minDistance,
       color, label,
       sprite,
     })

renderer/viewer/three/worldrendererThree.ts

@@ -24,6 +24,7 @@ import { CameraShake } from './cameraShake'
 import { ThreeJsMedia } from './threeJsMedia'
 import { Fountain } from './threeJsParticles'
 import { WaypointsRenderer } from './waypoints'
+import { SkyboxRenderer } from './skyboxRenderer'
 
 type SectionKey = string
 
@@ -71,6 +72,7 @@ export class WorldRendererThree extends WorldRendererCommon {
   }
   fountains: Fountain[] = []
   DEBUG_RAYCAST = false
+  skyboxRenderer: SkyboxRenderer
 
   private currentPosTween?: tweenJs.Tween<THREE.Vector3>
   private currentRotTween?: tweenJs.Tween<{ pitch: number, yaw: number }>
@@ -94,6 +96,10 @@ export class WorldRendererThree extends WorldRendererCommon {
     this.holdingBlock = new HoldingBlock(this)
     this.holdingBlockLeft = new HoldingBlock(this, true)
 
+    // Initialize skybox renderer
+    this.skyboxRenderer = new SkyboxRenderer(this.scene, null)
+    void this.skyboxRenderer.init()
+
     this.addDebugOverlay()
     this.resetScene()
     void this.init()
@@ -708,6 +714,10 @@ export class WorldRendererThree extends WorldRendererCommon {
     this.cursorBlock.render()
     this.updateSectionOffsets()
 
+    // Update skybox position to follow camera
+    const cameraPos = this.getCameraPosition()
+    this.skyboxRenderer.update(cameraPos)
+
     const sizeOrFovChanged = sizeChanged || this.displayOptions.inWorldRenderingConfig.fov !== this.camera.fov
     if (sizeOrFovChanged) {
       const size = this.renderer.getSize(new THREE.Vector2())
@@ -947,6 +957,7 @@ export class WorldRendererThree extends WorldRendererCommon {
 
   destroy (): void {
     super.destroy()
+    this.skyboxRenderer.dispose()
   }
 
   shouldObjectVisible (object: THREE.Object3D) {

src/dragndrop.ts

@@ -3,6 +3,7 @@ import fs from 'fs'
 import * as nbt from 'prismarine-nbt'
 import RegionFile from 'prismarine-provider-anvil/src/region'
 import { versions } from 'minecraft-data'
+import { getThreeJsRendererMethods } from 'renderer/viewer/three/threeJsMethods'
 import { openWorldDirectory, openWorldZip } from './browserfs'
 import { isGameActive } from './globalState'
 import { showNotification } from './react/NotificationProvider'
@@ -12,6 +13,9 @@ const parseNbt = promisify(nbt.parse)
 const simplifyNbt = nbt.simplify
 window.nbt = nbt
 
+// Supported image types for skybox
+const VALID_IMAGE_EXTENSIONS = ['.png', '.jpg', '.jpeg', '.webp']
+
 // todo display drop zone
 for (const event of ['drag', 'dragstart', 'dragend', 'dragover', 'dragenter', 'dragleave', 'drop']) {
   window.addEventListener(event, (e: any) => {
@@ -45,6 +49,34 @@ window.addEventListener('drop', async e => {
 })
 
 async function handleDroppedFile (file: File) {
+  // Check for image files first when game is active
+  if (isGameActive(false) && VALID_IMAGE_EXTENSIONS.some(ext => file.name.toLowerCase().endsWith(ext))) {
+    try {
+      // Convert image to base64
+      const reader = new FileReader()
+      const base64Promise = new Promise<string>((resolve, reject) => {
+        reader.onload = () => resolve(reader.result as string)
+        reader.onerror = reject
+      })
+      reader.readAsDataURL(file)
+      const base64Image = await base64Promise
+
+      // Get ThreeJS backend methods and update skybox
+      const setSkyboxImage = getThreeJsRendererMethods()?.setSkyboxImage
+      if (setSkyboxImage) {
+        await setSkyboxImage(base64Image)
+        showNotification('Skybox updated successfully')
+      } else {
+        showNotification('Cannot update skybox - renderer does not support it')
+      }
+      return
+    } catch (err) {
+      console.error('Failed to update skybox:', err)
+      showNotification('Failed to update skybox', 'error')
+      return
+    }
+  }
+
   if (file.name.endsWith('.zip')) {
     void openWorldZip(file)
     return