change: Removed chunk storage dir from being a global variable, and added some more tests

world/data_format.go

@@ -2,6 +2,7 @@ package world
 
 import (
 	"fmt"
+	"math/rand"
 )
 
 const (
@@ -15,6 +16,14 @@ type BlockPos struct {
 	Z int  `json:"z"`
 }
 
+func RandomBlockPosWithRange(maxRange float64) BlockPos {
+	return BlockPos{
+		X: int(rand.NormFloat64() * maxRange),
+		Y: uint(rand.NormFloat64() * maxRange),
+		Z: int(rand.NormFloat64() * maxRange),
+	}
+}
+
 func (b BlockPos) ToChunkPos() ChunkPos {
 	return ChunkPos{
 		X: b.X / 16,