fix: The raycast was skipping the block that the client is inside. (#145

)

* fix: The raycast was skipping the block that the client is inside.

* add test

src/world.js

@@ -59,7 +59,7 @@ class World extends EventEmitter {
 
   async raycast (from, direction, range, matcher = null) {
     const iter = new RaycastIterator(from, direction, range)
-    let pos = iter.next()
+    let pos = from
     while (pos) {
       const position = new Vec3(pos.x, pos.y, pos.z)
       const block = await this.getBlock(position)

src/worldsync.js

@@ -39,7 +39,7 @@ class WorldSync extends EventEmitter {
 
   raycast (from, direction, range, matcher = null) {
     const iter = new RaycastIterator(from, direction, range)
-    let pos = iter.next()
+    let pos = from
     while (pos) {
       const position = new Vec3(pos.x, pos.y, pos.z)
       const block = this.getBlock(position)

test/raycast.test.js

@@ -46,4 +46,12 @@ describe('raycasting', function () {
     const down = await world.raycast(head, new Vec3(0, -1, 0), 10)
     assert.notStrictEqual(down, null)
   })
+
+  it('raycast inside a block', async () => {
+    const head = new Vec3(0, 3.6, 0)
+    const inside = await world.raycast(head, new Vec3(0, 0, 1), 10)
+    assert.strictEqual(inside.position.x, 0)
+    assert.strictEqual(inside.position.y, 3)
+    assert.strictEqual(inside.position.z, 0)
+  })
 })