fix: use WALL_MIN_LENGTH constant to prevent ghost walls (#168)

* Increase minimum wall length from 0.01 to 0.5

* fix: use WALL_MIN_LENGTH constant in wall-tool.tsx

packages/editor/src/components/tools/wall/wall-drafting.ts

@@ -1,40 +1,32 @@
 import { useScene, type WallNode, WallNode as WallSchema } from '@pascal-app/core'
 import { useViewer } from '@pascal-app/viewer'
 import { sfxEmitter } from '../../../lib/sfx-bus'
-
 export type WallPlanPoint = [number, number]
-
 export const WALL_GRID_STEP = 0.5
 export const WALL_JOIN_SNAP_RADIUS = 0.35
-export const WALL_MIN_LENGTH = 0.01
+export const WALL_MIN_LENGTH = 0.5
-
 function distanceSquared(a: WallPlanPoint, b: WallPlanPoint): number {
   const dx = a[0] - b[0]
   const dz = a[1] - b[1]
   return dx * dx + dz * dz
 }
-
 function snapScalarToGrid(value: number, step = WALL_GRID_STEP): number {
   return Math.round(value / step) * step
 }
-
 export function snapPointToGrid(point: WallPlanPoint, step = WALL_GRID_STEP): WallPlanPoint {
   return [snapScalarToGrid(point[0], step), snapScalarToGrid(point[1], step)]
 }
-
 export function snapPointTo45Degrees(start: WallPlanPoint, cursor: WallPlanPoint): WallPlanPoint {
   const dx = cursor[0] - start[0]
   const dz = cursor[1] - start[1]
   const angle = Math.atan2(dz, dx)
   const snappedAngle = Math.round(angle / (Math.PI / 4)) * (Math.PI / 4)
   const distance = Math.sqrt(dx * dx + dz * dz)
-
   return snapPointToGrid([
     start[0] + Math.cos(snappedAngle) * distance,
     start[1] + Math.sin(snappedAngle) * distance,
   ])
 }
-
 function projectPointOntoWall(point: WallPlanPoint, wall: WallNode): WallPlanPoint | null {
   const [x1, z1] = wall.start
   const [x2, z2] = wall.end
@@ -44,15 +36,12 @@ function projectPointOntoWall(point: WallPlanPoint, wall: WallNode): WallPlanPoi
   if (lengthSquared < 1e-9) {
     return null
   }
-
   const t = ((point[0] - x1) * dx + (point[1] - z1) * dz) / lengthSquared
   if (t <= 0 || t >= 1) {
     return null
   }
-
   return [x1 + dx * t, z1 + dz * t]
 }
-
 export function findWallSnapTarget(
   point: WallPlanPoint,
   walls: WallNode[],
@@ -62,12 +51,10 @@ export function findWallSnapTarget(
   const radiusSquared = (options?.radius ?? WALL_JOIN_SNAP_RADIUS) ** 2
   let bestTarget: WallPlanPoint | null = null
   let bestDistanceSquared = Number.POSITIVE_INFINITY
-
   for (const wall of walls) {
     if (ignoreWallIds.has(wall.id)) {
       continue
     }
-
     const candidates: Array<WallPlanPoint | null> = [
       wall.start,
       wall.end,
@@ -77,7 +64,6 @@ export function findWallSnapTarget(
       if (!candidate) {
         continue
       }
-
       const candidateDistanceSquared = distanceSquared(point, candidate)
       if (
         candidateDistanceSquared > radiusSquared ||
@@ -85,15 +71,12 @@ export function findWallSnapTarget(
       ) {
         continue
       }
-
       bestTarget = candidate
       bestDistanceSquared = candidateDistanceSquared
     }
   }
-
   return bestTarget
 }
-
 export function snapWallDraftPoint(args: {
   point: WallPlanPoint
   walls: WallNode[]
@@ -103,38 +86,31 @@ export function snapWallDraftPoint(args: {
 }): WallPlanPoint {
   const { point, walls, start, angleSnap = false, ignoreWallIds } = args
   const basePoint = start && angleSnap ? snapPointTo45Degrees(start, point) : snapPointToGrid(point)
-
   return (
     findWallSnapTarget(basePoint, walls, {
       ignoreWallIds,
     }) ?? basePoint
   )
 }
-
 export function isWallLongEnough(start: WallPlanPoint, end: WallPlanPoint): boolean {
   return distanceSquared(start, end) >= WALL_MIN_LENGTH * WALL_MIN_LENGTH
 }
-
 export function createWallOnCurrentLevel(
   start: WallPlanPoint,
   end: WallPlanPoint,
 ): WallNode | null {
   const currentLevelId = useViewer.getState().selection.levelId
   const { createNode, nodes } = useScene.getState()
-
   if (!(currentLevelId && isWallLongEnough(start, end))) {
     return null
   }
-
   const wallCount = Object.values(nodes).filter((node) => node.type === 'wall').length
   const wall = WallSchema.parse({
     name: `Wall ${wallCount + 1}`,
     start,
     end,
   })
-
   createNode(wall, currentLevelId)
   sfxEmitter.emit('sfx:structure-build')
-
   return wall
 }

packages/editor/src/components/tools/wall/wall-tool.tsx

@@ -5,7 +5,7 @@ import { DoubleSide, type Group, type Mesh, Shape, ShapeGeometry, Vector3 } from
 import { EDITOR_LAYER } from '../../../lib/constants'
 import { sfxEmitter } from '../../../lib/sfx-bus'
 import { CursorSphere } from '../shared/cursor-sphere'
-import { createWallOnCurrentLevel, snapWallDraftPoint, type WallPlanPoint } from './wall-drafting'
+import { createWallOnCurrentLevel, snapWallDraftPoint, WALL_MIN_LENGTH, type WallPlanPoint } from './wall-drafting'
 
 const WALL_HEIGHT = 2.5
 
@@ -17,7 +17,7 @@ const updateWallPreview = (mesh: Mesh, start: Vector3, end: Vector3) => {
   const direction = new Vector3(end.x - start.x, 0, end.z - start.z)
   const length = direction.length()
 
-  if (length < 0.01) {
+  if (length < WALL_MIN_LENGTH) {
     mesh.visible = false
     return
   }
@@ -142,7 +142,7 @@ export const WallTool: React.FC = () => {
         endingPoint.current.set(snappedEnd[0], event.position[1], snappedEnd[1])
         const dx = endingPoint.current.x - startingPoint.current.x
         const dz = endingPoint.current.z - startingPoint.current.z
-        if (dx * dx + dz * dz < 0.01 * 0.01) return
+        if (dx * dx + dz * dz < WALL_MIN_LENGTH * WALL_MIN_LENGTH) return
         createWallOnCurrentLevel(
           [startingPoint.current.x, startingPoint.current.z],
           [endingPoint.current.x, endingPoint.current.z],