diff --git a/pkg/atlas/atlas.go b/pkg/atlas/atlas.go
index 3181442..1446cad 100644
--- a/pkg/atlas/atlas.go
+++ b/pkg/atlas/atlas.go
@@ -42,8 +42,12 @@ func NewAtlas(size, chunkSize int) Atlas {
 
 	// Initialise all the chunks
 	for i := range a.Chunks {
+		tiles := make([]byte, chunkSize*chunkSize)
+		for i := 0; i < len(tiles); i++ {
+			tiles[i] = TileEmpty
+		}
 		a.Chunks[i] = Chunk{
-			Tiles: make([]byte, chunkSize*chunkSize),
+			Tiles: tiles,
 		}
 	}
 
diff --git a/pkg/game/world.go b/pkg/game/world.go
index 488a7bd..aad9a26 100644
--- a/pkg/game/world.go
+++ b/pkg/game/world.go
@@ -110,7 +110,7 @@ func (w *World) SpawnRover() (uuid.UUID, error) {
 		if tile, err := w.Atlas.GetTile(rover.Attributes.Pos); err != nil {
 			return uuid.Nil, err
 		} else {
-			if tile == atlas.TileEmpty {
+			if !atlas.IsBlocking(tile) {
 				break
 			} else {
 				// Try and spawn to the east of the blockage
@@ -278,7 +278,10 @@ func (w *World) RadarFromRover(id uuid.UUID) ([]byte, error) {
 		// Add all rovers to the radar
 		for _, r := range w.Rovers {
 			// If the rover is in range
-			if r.Attributes.Pos.Distance(roverPos) < float64(radarSpan) {
+			dist := r.Attributes.Pos.Added(roverPos.Negated())
+			dist = dist.Abs()
+
+			if dist.X <= r.Attributes.Range && dist.Y <= r.Attributes.Range {
 				relative := r.Attributes.Pos.Added(radarMin.Negated())
 				index := relative.X + relative.Y*radarSpan
 				radar[index] = atlas.TileRover
@@ -400,7 +403,7 @@ func PrintTiles(tiles []byte) {
 	num := int(math.Sqrt(float64(len(tiles))))
 	for j := num - 1; j >= 0; j-- {
 		for i := 0; i < num; i++ {
-			fmt.Printf("%d", tiles[i+num*j])
+			fmt.Printf("%c", tiles[i+num*j])
 		}
 		fmt.Print("\n")
 	}
diff --git a/pkg/game/world_test.go b/pkg/game/world_test.go
index 6267894..cc6ccac 100644
--- a/pkg/game/world_test.go
+++ b/pkg/game/world_test.go
@@ -135,8 +135,8 @@ func TestWorld_RadarFromRover(t *testing.T) {
 	PrintTiles(radar)
 
 	// Test all expected values
-	//assert.Equal(t, atlas.TileRover, radar[1+fullRange])
-	//assert.Equal(t, atlas.TileRover, radar[4+4*fullRange])
+	assert.Equal(t, atlas.TileRover, radar[1+fullRange])
+	assert.Equal(t, atlas.TileRover, radar[4+4*fullRange])
 	for i := 0; i < 8; i++ {
 		assert.Equal(t, atlas.TileLargeRock, radar[i])
 		assert.Equal(t, atlas.TileLargeRock, radar[i+(7*9)])
diff --git a/pkg/vector/vector.go b/pkg/vector/vector.go
index f6c8215..1b82c5a 100644
--- a/pkg/vector/vector.go
+++ b/pkg/vector/vector.go
@@ -1,6 +1,10 @@
 package vector
 
-import "math"
+import (
+	"math"
+
+	"github.com/mdiluz/rove/pkg/maths"
+)
 
 // Vector desribes a 3D vector
 type Vector struct {
@@ -45,3 +49,8 @@ func (v Vector) Multiplied(val int) Vector {
 func (v Vector) Divided(val int) Vector {
 	return Vector{v.X / val, v.Y / val}
 }
+
+// Abs returns an absolute version of the vector
+func (v Vector) Abs() Vector {
+	return Vector{maths.Abs(v.X), maths.Abs(v.Y)}
+}