From faa1271c5a01bb555ceb3fc9d678e333bd5a4691 Mon Sep 17 00:00:00 2001
From: Marc Di Luzio <marc.diluzio@gmail.com>
Date: Sun, 19 Jul 2020 13:57:45 +0100
Subject: [PATCH] Try and very rarely spawn a dormant rover

---
 pkg/atlas/worldgen.go | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/pkg/atlas/worldgen.go b/pkg/atlas/worldgen.go
index 590596a..8ec8571 100644
--- a/pkg/atlas/worldgen.go
+++ b/pkg/atlas/worldgen.go
@@ -31,6 +31,7 @@ func NewNoiseWorldGen(seed int64) WorldGen {
 const (
 	terrainNoiseScale = 6
 	rockNoiseScale    = 3
+	dormantRoverScale = 25
 )
 
 // GetTile returns the chosen tile at a location
@@ -56,5 +57,14 @@ func (g *NoiseWorldGen) GetObject(v maths.Vector) Object {
 	case o > 0.5:
 		obj = roveapi.Object_RockSmall
 	}
+
+	// Very rarely spawn a dormant rover
+	if obj == roveapi.Object_ObjectUnknown {
+		o = g.noise.Eval2(float64(v.X)/dormantRoverScale, float64(v.Y)/dormantRoverScale)
+		if o > 0.8 {
+			obj = roveapi.Object_RoverDormant
+		}
+	}
+
 	return Object{Type: roveapi.Object(obj)}
 }