From 70f041ae5d16686b65ffb77c9528b216d19c4310 Mon Sep 17 00:00:00 2001
From: Marc Di Luzio <marc.diluzio@gmail.com>
Date: Sat, 1 Aug 2020 11:09:15 +0100
Subject: [PATCH 01/10] Spawn rover parts in the world

---
 pkg/rove/worldgen.go | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/pkg/rove/worldgen.go b/pkg/rove/worldgen.go
index dd864b8..a1593c6 100644
--- a/pkg/rove/worldgen.go
+++ b/pkg/rove/worldgen.go
@@ -35,6 +35,7 @@ func NewNoiseWorldGen(seed int64) WorldGen {
 const (
 	terrainNoiseScale = 15
 	rockNoiseScale    = 3
+	partsNoiseScale   = 2
 )
 
 // GetTile returns the chosen tile at a location
@@ -52,12 +53,21 @@ func (g *NoiseWorldGen) GetTile(v maths.Vector) roveapi.Tile {
 
 // GetObject returns the chosen object at a location
 func (g *NoiseWorldGen) GetObject(v maths.Vector) (obj Object) {
-	o := g.noise.Eval2(float64(v.X)/rockNoiseScale, float64(v.Y)/rockNoiseScale)
+	r := g.noise.Eval2(float64(v.X)/rockNoiseScale, float64(v.Y)/rockNoiseScale)
 	switch {
-	case o > 0.6:
+	// Prioritise rocks
+	case r > 0.6:
 		obj.Type = roveapi.Object_RockLarge
-	case o > 0.5:
+	case r > 0.5:
 		obj.Type = roveapi.Object_RockSmall
+
+	default:
+		// Otherwise, try some rover parts
+		p := g.noise.Eval2(float64(v.X)/partsNoiseScale, float64(v.Y)/partsNoiseScale)
+		switch {
+		case p > 0.8:
+			obj.Type = roveapi.Object_RoverParts
+		}
 	}
 
 	// Very rarely spawn a dormant rover

From e66b899e2aef8ce5299dc01b589da760a8e9e6fb Mon Sep 17 00:00:00 2001
From: Marc Di Luzio <marc.diluzio@gmail.com>
Date: Sat, 1 Aug 2020 11:09:41 +0100
Subject: [PATCH 02/10] Increase the base rover range to 10

---
 pkg/rove/rover.go      | 2 +-
 pkg/rove/world_test.go | 9 +++++----
 2 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/pkg/rove/rover.go b/pkg/rove/rover.go
index d0fb9cb..bebde50 100644
--- a/pkg/rove/rover.go
+++ b/pkg/rove/rover.go
@@ -74,7 +74,7 @@ type Rover struct {
 // DefaultRover returns a default rover object with default settings
 func DefaultRover() *Rover {
 	return &Rover{
-		Range:            4,
+		Range:            10,
 		Integrity:        10,
 		MaximumIntegrity: 10,
 		Capacity:         10,
diff --git a/pkg/rove/world_test.go b/pkg/rove/world_test.go
index afc8f53..f085d89 100644
--- a/pkg/rove/world_test.go
+++ b/pkg/rove/world_test.go
@@ -109,15 +109,16 @@ func TestWorld_RadarFromRover(t *testing.T) {
 	world.Atlas.SetObject(maths.Vector{X: 0, Y: 0}, Object{Type: roveapi.Object_ObjectUnknown})
 	assert.NoError(t, world.WarpRover(a, maths.Vector{X: 0, Y: 0}), "Failed to warp rover")
 
+	r, err := world.GetRover(a)
+	assert.NoError(t, err)
+
 	radar, objs, err := world.RadarFromRover(a)
 	assert.NoError(t, err, "Failed to get radar from rover")
-	fullRange := 4 + 4 + 1
+	fullRange := r.Range + r.Range + 1
 	assert.Equal(t, fullRange*fullRange, len(radar), "Radar returned wrong length")
 	assert.Equal(t, fullRange*fullRange, len(objs), "Radar returned wrong length")
 
-	// Test the expected values
-	assert.Equal(t, roveapi.Object_RoverLive, objs[1+fullRange])
-	assert.Equal(t, roveapi.Object_RoverLive, objs[4+4*fullRange])
+	// TODO: Verify the other rover is on the radar
 
 	// Check the radar results are stable
 	radar1, objs1, err := world.RadarFromRover(a)

From 018c122861f7a1536b3fe8ee754dfd1c2207a477 Mon Sep 17 00:00:00 2001
From: Marc Di Luzio <marc.diluzio@gmail.com>
Date: Sat, 1 Aug 2020 11:24:53 +0100
Subject: [PATCH 03/10] Stop spawning dormant rovers in the world

---
 pkg/rove/worldgen.go | 40 ----------------------------------------
 1 file changed, 40 deletions(-)

diff --git a/pkg/rove/worldgen.go b/pkg/rove/worldgen.go
index a1593c6..2abb447 100644
--- a/pkg/rove/worldgen.go
+++ b/pkg/rove/worldgen.go
@@ -1,10 +1,6 @@
 package rove
 
 import (
-	"encoding/json"
-	"log"
-	"math/rand"
-
 	"github.com/mdiluz/rove/pkg/maths"
 	"github.com/mdiluz/rove/proto/roveapi"
 	"github.com/ojrac/opensimplex-go"
@@ -70,41 +66,5 @@ func (g *NoiseWorldGen) GetObject(v maths.Vector) (obj Object) {
 		}
 	}
 
-	// Very rarely spawn a dormant rover
-	if obj.Type == roveapi.Object_ObjectUnknown {
-		// TODO: Make this better, ideally with noise
-		if v.X%25 == 0 && v.Y%25 == 0 && v.X != 0 && v.Y != 0 {
-			obj.Type = roveapi.Object_RoverDormant
-		}
-	}
-
-	// Post process any spawned objects
-	switch obj.Type {
-	case roveapi.Object_RoverDormant:
-		// Create the rover
-		r := DefaultRover()
-
-		// Set the rover variables
-		r.Pos = v
-
-		// Upgrade this rover randomly
-		r.MaximumCharge += rand.Int() % 3
-		r.MaximumIntegrity += rand.Int() % 3
-		r.Capacity += rand.Int() % 3
-		r.Range += rand.Int() % 3
-
-		// For now, mark the log as corrupted
-		r.AddLogEntryf("log corrupted")
-
-		// Marshal the rover data into the object data
-		b, err := json.Marshal(r)
-		if err != nil {
-			log.Fatalf("couldn't marshal rover, should never fail: %s", err)
-		}
-
-		// Store the bytes
-		obj.Data = b
-	}
-
 	return obj
 }

From 636f0ed7734cc3642eac9b9bda9e807c00a91ede Mon Sep 17 00:00:00 2001
From: Marc Di Luzio <marc.diluzio@gmail.com>
Date: Sat, 1 Aug 2020 11:26:10 +0100
Subject: [PATCH 04/10] Spawn rover parts a little more frequently

---
 pkg/rove/worldgen.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkg/rove/worldgen.go b/pkg/rove/worldgen.go
index 2abb447..6cb425f 100644
--- a/pkg/rove/worldgen.go
+++ b/pkg/rove/worldgen.go
@@ -61,7 +61,7 @@ func (g *NoiseWorldGen) GetObject(v maths.Vector) (obj Object) {
 		// Otherwise, try some rover parts
 		p := g.noise.Eval2(float64(v.X)/partsNoiseScale, float64(v.Y)/partsNoiseScale)
 		switch {
-		case p > 0.8:
+		case p > 0.7:
 			obj.Type = roveapi.Object_RoverParts
 		}
 	}

From 6a44633d40ae92c0c66e2baecae387ec9a9762ab Mon Sep 17 00:00:00 2001
From: Marc Di Luzio <marc.diluzio@gmail.com>
Date: Sun, 2 Aug 2020 11:28:14 +0100
Subject: [PATCH 05/10] Add rover parts to the cmdline pretty printer

---
 cmd/rove/internal/glyph.go | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/cmd/rove/internal/glyph.go b/cmd/rove/internal/glyph.go
index eac12c0..4a774e7 100644
--- a/cmd/rove/internal/glyph.go
+++ b/cmd/rove/internal/glyph.go
@@ -25,6 +25,9 @@ const (
 	// GlyphRoverDormant represents a dormant rover
 	GlyphRoverDormant = Glyph('r')
 
+	// GlyphRoverParts represents spare rover parts
+	GlyphRoverParts = Glyph('*')
+
 	// GlyphRockSmall is a small stashable rock
 	GlyphRockSmall = Glyph('o')
 
@@ -58,6 +61,8 @@ func ObjectGlyph(o roveapi.Object) Glyph {
 		return GlyphRoverDormant
 	case roveapi.Object_RockLarge:
 		return GlyphRockLarge
+	case roveapi.Object_RoverParts:
+		return GlyphRoverParts
 	}
 
 	log.Fatalf("Unknown object type: %c", o)

From 1200b0a2a2361e6ea26ff036367796b33c910868 Mon Sep 17 00:00:00 2001
From: Marc Di Luzio <marc.diluzio@gmail.com>
Date: Sun, 2 Aug 2020 11:39:28 +0100
Subject: [PATCH 06/10] Add "upgrade" command to use the rover parts

---
 proto/roveapi/roveapi.pb.go | 526 +++++++++++++++++++++---------------
 proto/roveapi/roveapi.proto |  44 ++-
 2 files changed, 333 insertions(+), 237 deletions(-)

diff --git a/proto/roveapi/roveapi.pb.go b/proto/roveapi/roveapi.pb.go
index 753c058..81a6cb5 100644
--- a/proto/roveapi/roveapi.pb.go
+++ b/proto/roveapi/roveapi.pb.go
@@ -39,47 +39,51 @@ type CommandType int32
 
 const (
 	CommandType_none CommandType = 0
-	// Toggles the sails, either catching the wind, or charging from the sun
-	CommandType_toggle CommandType = 1
-	// Turns the rover in the specified bearing (requires bearing)
-	CommandType_turn CommandType = 2
-	// Stashes item at current location in rover inventory
-	CommandType_stash CommandType = 3
-	// Repairs the rover using an inventory object
-	CommandType_repair CommandType = 4
-	// Broadcasts a message to nearby rovers (requires data)
-	CommandType_broadcast CommandType = 5
-	// Salvages a neighboring dormant rover for parts
-	CommandType_salvage CommandType = 6
-	// Transfers remote control into dormant rover
-	CommandType_transfer CommandType = 7
 	// Waits before performing the next command
-	CommandType_wait CommandType = 8
+	CommandType_wait CommandType = 1
+	// Toggles the sails, either catching the wind, or charging from the sun
+	CommandType_toggle CommandType = 2
+	// Turns the rover in the specified bearing (requires bearing)
+	CommandType_turn CommandType = 3
+	// Stashes item at current location in rover inventory
+	CommandType_stash CommandType = 4
+	// Repairs the rover using an inventory object
+	CommandType_repair CommandType = 5
+	// Broadcasts a message to nearby rovers (requires data)
+	CommandType_broadcast CommandType = 6
+	// Salvages a neighboring dormant rover for parts
+	CommandType_salvage CommandType = 7
+	// Transfers remote control into dormant rover
+	CommandType_transfer CommandType = 8
+	// Upgrades a chosen rover specification using 5 rover parts
+	CommandType_upgrade CommandType = 9
 )
 
 // Enum value maps for CommandType.
 var (
 	CommandType_name = map[int32]string{
 		0: "none",
-		1: "toggle",
-		2: "turn",
-		3: "stash",
-		4: "repair",
-		5: "broadcast",
-		6: "salvage",
-		7: "transfer",
-		8: "wait",
+		1: "wait",
+		2: "toggle",
+		3: "turn",
+		4: "stash",
+		5: "repair",
+		6: "broadcast",
+		7: "salvage",
+		8: "transfer",
+		9: "upgrade",
 	}
 	CommandType_value = map[string]int32{
 		"none":      0,
-		"toggle":    1,
-		"turn":      2,
-		"stash":     3,
-		"repair":    4,
-		"broadcast": 5,
-		"salvage":   6,
-		"transfer":  7,
-		"wait":      8,
+		"wait":      1,
+		"toggle":    2,
+		"turn":      3,
+		"stash":     4,
+		"repair":    5,
+		"broadcast": 6,
+		"salvage":   7,
+		"transfer":  8,
+		"upgrade":   9,
 	}
 )
 
@@ -179,6 +183,62 @@ func (Bearing) EnumDescriptor() ([]byte, []int) {
 	return file_roveapi_roveapi_proto_rawDescGZIP(), []int{1}
 }
 
+// Describes the type of upgrade
+type RoverUpgrade int32
+
+const (
+	RoverUpgrade_RoverUpgradeUnknown RoverUpgrade = 0
+	RoverUpgrade_Range               RoverUpgrade = 1
+	RoverUpgrade_Capacity            RoverUpgrade = 2
+	RoverUpgrade_MaximumIntegrity    RoverUpgrade = 3
+	RoverUpgrade_MaximumCharge       RoverUpgrade = 4
+)
+
+// Enum value maps for RoverUpgrade.
+var (
+	RoverUpgrade_name = map[int32]string{
+		0: "RoverUpgradeUnknown",
+		1: "Range",
+		2: "Capacity",
+		3: "MaximumIntegrity",
+		4: "MaximumCharge",
+	}
+	RoverUpgrade_value = map[string]int32{
+		"RoverUpgradeUnknown": 0,
+		"Range":               1,
+		"Capacity":            2,
+		"MaximumIntegrity":    3,
+		"MaximumCharge":       4,
+	}
+)
+
+func (x RoverUpgrade) Enum() *RoverUpgrade {
+	p := new(RoverUpgrade)
+	*p = x
+	return p
+}
+
+func (x RoverUpgrade) String() string {
+	return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
+}
+
+func (RoverUpgrade) Descriptor() protoreflect.EnumDescriptor {
+	return file_roveapi_roveapi_proto_enumTypes[2].Descriptor()
+}
+
+func (RoverUpgrade) Type() protoreflect.EnumType {
+	return &file_roveapi_roveapi_proto_enumTypes[2]
+}
+
+func (x RoverUpgrade) Number() protoreflect.EnumNumber {
+	return protoreflect.EnumNumber(x)
+}
+
+// Deprecated: Use RoverUpgrade.Descriptor instead.
+func (RoverUpgrade) EnumDescriptor() ([]byte, []int) {
+	return file_roveapi_roveapi_proto_rawDescGZIP(), []int{2}
+}
+
 // Types of objects
 type Object int32
 
@@ -229,11 +289,11 @@ func (x Object) String() string {
 }
 
 func (Object) Descriptor() protoreflect.EnumDescriptor {
-	return file_roveapi_roveapi_proto_enumTypes[2].Descriptor()
+	return file_roveapi_roveapi_proto_enumTypes[3].Descriptor()
 }
 
 func (Object) Type() protoreflect.EnumType {
-	return &file_roveapi_roveapi_proto_enumTypes[2]
+	return &file_roveapi_roveapi_proto_enumTypes[3]
 }
 
 func (x Object) Number() protoreflect.EnumNumber {
@@ -242,7 +302,7 @@ func (x Object) Number() protoreflect.EnumNumber {
 
 // Deprecated: Use Object.Descriptor instead.
 func (Object) EnumDescriptor() ([]byte, []int) {
-	return file_roveapi_roveapi_proto_rawDescGZIP(), []int{2}
+	return file_roveapi_roveapi_proto_rawDescGZIP(), []int{3}
 }
 
 type Tile int32
@@ -285,11 +345,11 @@ func (x Tile) String() string {
 }
 
 func (Tile) Descriptor() protoreflect.EnumDescriptor {
-	return file_roveapi_roveapi_proto_enumTypes[3].Descriptor()
+	return file_roveapi_roveapi_proto_enumTypes[4].Descriptor()
 }
 
 func (Tile) Type() protoreflect.EnumType {
-	return &file_roveapi_roveapi_proto_enumTypes[3]
+	return &file_roveapi_roveapi_proto_enumTypes[4]
 }
 
 func (x Tile) Number() protoreflect.EnumNumber {
@@ -298,7 +358,7 @@ func (x Tile) Number() protoreflect.EnumNumber {
 
 // Deprecated: Use Tile.Descriptor instead.
 func (Tile) EnumDescriptor() ([]byte, []int) {
-	return file_roveapi_roveapi_proto_rawDescGZIP(), []int{3}
+	return file_roveapi_roveapi_proto_rawDescGZIP(), []int{4}
 }
 
 // SailPosition represents the position of the sola sail
@@ -337,11 +397,11 @@ func (x SailPosition) String() string {
 }
 
 func (SailPosition) Descriptor() protoreflect.EnumDescriptor {
-	return file_roveapi_roveapi_proto_enumTypes[4].Descriptor()
+	return file_roveapi_roveapi_proto_enumTypes[5].Descriptor()
 }
 
 func (SailPosition) Type() protoreflect.EnumType {
-	return &file_roveapi_roveapi_proto_enumTypes[4]
+	return &file_roveapi_roveapi_proto_enumTypes[5]
 }
 
 func (x SailPosition) Number() protoreflect.EnumNumber {
@@ -350,7 +410,7 @@ func (x SailPosition) Number() protoreflect.EnumNumber {
 
 // Deprecated: Use SailPosition.Descriptor instead.
 func (SailPosition) EnumDescriptor() ([]byte, []int) {
-	return file_roveapi_roveapi_proto_rawDescGZIP(), []int{4}
+	return file_roveapi_roveapi_proto_rawDescGZIP(), []int{5}
 }
 
 // ServerStatusRequest is an empty placeholder
@@ -648,6 +708,8 @@ type Command struct {
 	Data []byte `protobuf:"bytes,3,opt,name=data,proto3" json:"data,omitempty"`
 	// move - the bearing for the rover to turn to
 	Bearing Bearing `protobuf:"varint,4,opt,name=bearing,proto3,enum=roveapi.Bearing" json:"bearing,omitempty"`
+	// upgrade - the upgrade to apply to the rover
+	Upgrade RoverUpgrade `protobuf:"varint,5,opt,name=upgrade,proto3,enum=roveapi.RoverUpgrade" json:"upgrade,omitempty"`
 }
 
 func (x *Command) Reset() {
@@ -710,6 +772,13 @@ func (x *Command) GetBearing() Bearing {
 	return Bearing_BearingUnknown
 }
 
+func (x *Command) GetUpgrade() RoverUpgrade {
+	if x != nil {
+		return x.Upgrade
+	}
+	return RoverUpgrade_RoverUpgradeUnknown
+}
+
 // CommandRequest describes a set of commands to be requested for the rover
 type CommandRequest struct {
 	state         protoimpl.MessageState
@@ -1423,7 +1492,7 @@ var file_roveapi_roveapi_proto_rawDesc = []byte{
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@@ -1432,137 +1501,148 @@ var file_roveapi_roveapi_proto_rawDesc = []byte{
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+	0x69, 0x6c, 0x50, 0x6f, 0x73, 0x69, 0x74, 0x69, 0x6f, 0x6e, 0x10, 0x00, 0x12, 0x10, 0x0a, 0x0c,
+	0x43, 0x61, 0x74, 0x63, 0x68, 0x69, 0x6e, 0x67, 0x57, 0x69, 0x6e, 0x64, 0x10, 0x01, 0x12, 0x11,
+	0x0a, 0x0d, 0x53, 0x6f, 0x6c, 0x61, 0x72, 0x43, 0x68, 0x61, 0x72, 0x67, 0x69, 0x6e, 0x67, 0x10,
+	0x02, 0x32, 0xcf, 0x02, 0x0a, 0x04, 0x52, 0x6f, 0x76, 0x65, 0x12, 0x4d, 0x0a, 0x0c, 0x53, 0x65,
+	0x72, 0x76, 0x65, 0x72, 0x53, 0x74, 0x61, 0x74, 0x75, 0x73, 0x12, 0x1c, 0x2e, 0x72, 0x6f, 0x76,
+	0x65, 0x61, 0x70, 0x69, 0x2e, 0x53, 0x65, 0x72, 0x76, 0x65, 0x72, 0x53, 0x74, 0x61, 0x74, 0x75,
+	0x73, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x1a, 0x1d, 0x2e, 0x72, 0x6f, 0x76, 0x65, 0x61,
+	0x70, 0x69, 0x2e, 0x53, 0x65, 0x72, 0x76, 0x65, 0x72, 0x53, 0x74, 0x61, 0x74, 0x75, 0x73, 0x52,
+	0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x22, 0x00, 0x12, 0x41, 0x0a, 0x08, 0x52, 0x65, 0x67,
+	0x69, 0x73, 0x74, 0x65, 0x72, 0x12, 0x18, 0x2e, 0x72, 0x6f, 0x76, 0x65, 0x61, 0x70, 0x69, 0x2e,
+	0x52, 0x65, 0x67, 0x69, 0x73, 0x74, 0x65, 0x72, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x1a,
+	0x19, 0x2e, 0x72, 0x6f, 0x76, 0x65, 0x61, 0x70, 0x69, 0x2e, 0x52, 0x65, 0x67, 0x69, 0x73, 0x74,
+	0x65, 0x72, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x22, 0x00, 0x12, 0x3e, 0x0a, 0x07,
+	0x43, 0x6f, 0x6d, 0x6d, 0x61, 0x6e, 0x64, 0x12, 0x17, 0x2e, 0x72, 0x6f, 0x76, 0x65, 0x61, 0x70,
+	0x69, 0x2e, 0x43, 0x6f, 0x6d, 0x6d, 0x61, 0x6e, 0x64, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74,
+	0x1a, 0x18, 0x2e, 0x72, 0x6f, 0x76, 0x65, 0x61, 0x70, 0x69, 0x2e, 0x43, 0x6f, 0x6d, 0x6d, 0x61,
+	0x6e, 0x64, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x22, 0x00, 0x12, 0x38, 0x0a, 0x05,
+	0x52, 0x61, 0x64, 0x61, 0x72, 0x12, 0x15, 0x2e, 0x72, 0x6f, 0x76, 0x65, 0x61, 0x70, 0x69, 0x2e,
+	0x52, 0x61, 0x64, 0x61, 0x72, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x1a, 0x16, 0x2e, 0x72,
+	0x6f, 0x76, 0x65, 0x61, 0x70, 0x69, 0x2e, 0x52, 0x61, 0x64, 0x61, 0x72, 0x52, 0x65, 0x73, 0x70,
+	0x6f, 0x6e, 0x73, 0x65, 0x22, 0x00, 0x12, 0x3b, 0x0a, 0x06, 0x53, 0x74, 0x61, 0x74, 0x75, 0x73,
+	0x12, 0x16, 0x2e, 0x72, 0x6f, 0x76, 0x65, 0x61, 0x70, 0x69, 0x2e, 0x53, 0x74, 0x61, 0x74, 0x75,
+	0x73, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x1a, 0x17, 0x2e, 0x72, 0x6f, 0x76, 0x65, 0x61,
+	0x70, 0x69, 0x2e, 0x53, 0x74, 0x61, 0x74, 0x75, 0x73, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73,
+	0x65, 0x22, 0x00, 0x42, 0x26, 0x5a, 0x24, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f,
+	0x6d, 0x2f, 0x6d, 0x64, 0x69, 0x6c, 0x75, 0x7a, 0x2f, 0x72, 0x6f, 0x76, 0x65, 0x2f, 0x70, 0x72,
+	0x6f, 0x74, 0x6f, 0x2f, 0x72, 0x6f, 0x76, 0x65, 0x61, 0x70, 0x69, 0x62, 0x06, 0x70, 0x72, 0x6f,
+	0x74, 0x6f, 0x33,
 }
 
 var (
@@ -1577,66 +1657,68 @@ func file_roveapi_roveapi_proto_rawDescGZIP() []byte {
 	return file_roveapi_roveapi_proto_rawDescData
 }
 
-var file_roveapi_roveapi_proto_enumTypes = make([]protoimpl.EnumInfo, 5)
+var file_roveapi_roveapi_proto_enumTypes = make([]protoimpl.EnumInfo, 6)
 var file_roveapi_roveapi_proto_msgTypes = make([]protoimpl.MessageInfo, 17)
 var file_roveapi_roveapi_proto_goTypes = []interface{}{
 	(CommandType)(0),             // 0: roveapi.CommandType
 	(Bearing)(0),                 // 1: roveapi.Bearing
-	(Object)(0),                  // 2: roveapi.Object
-	(Tile)(0),                    // 3: roveapi.Tile
-	(SailPosition)(0),            // 4: roveapi.SailPosition
-	(*ServerStatusRequest)(nil),  // 5: roveapi.ServerStatusRequest
-	(*ServerStatusResponse)(nil), // 6: roveapi.ServerStatusResponse
-	(*RegisterRequest)(nil),      // 7: roveapi.RegisterRequest
-	(*Account)(nil),              // 8: roveapi.Account
-	(*RegisterResponse)(nil),     // 9: roveapi.RegisterResponse
-	(*Command)(nil),              // 10: roveapi.Command
-	(*CommandRequest)(nil),       // 11: roveapi.CommandRequest
-	(*CommandResponse)(nil),      // 12: roveapi.CommandResponse
-	(*RadarRequest)(nil),         // 13: roveapi.RadarRequest
-	(*RadarResponse)(nil),        // 14: roveapi.RadarResponse
-	(*StatusRequest)(nil),        // 15: roveapi.StatusRequest
-	(*Log)(nil),                  // 16: roveapi.Log
-	(*Vector)(nil),               // 17: roveapi.Vector
-	(*RoverSpecifications)(nil),  // 18: roveapi.RoverSpecifications
-	(*RoverStatus)(nil),          // 19: roveapi.RoverStatus
-	(*RoverReadings)(nil),        // 20: roveapi.RoverReadings
-	(*StatusResponse)(nil),       // 21: roveapi.StatusResponse
+	(RoverUpgrade)(0),            // 2: roveapi.RoverUpgrade
+	(Object)(0),                  // 3: roveapi.Object
+	(Tile)(0),                    // 4: roveapi.Tile
+	(SailPosition)(0),            // 5: roveapi.SailPosition
+	(*ServerStatusRequest)(nil),  // 6: roveapi.ServerStatusRequest
+	(*ServerStatusResponse)(nil), // 7: roveapi.ServerStatusResponse
+	(*RegisterRequest)(nil),      // 8: roveapi.RegisterRequest
+	(*Account)(nil),              // 9: roveapi.Account
+	(*RegisterResponse)(nil),     // 10: roveapi.RegisterResponse
+	(*Command)(nil),              // 11: roveapi.Command
+	(*CommandRequest)(nil),       // 12: roveapi.CommandRequest
+	(*CommandResponse)(nil),      // 13: roveapi.CommandResponse
+	(*RadarRequest)(nil),         // 14: roveapi.RadarRequest
+	(*RadarResponse)(nil),        // 15: roveapi.RadarResponse
+	(*StatusRequest)(nil),        // 16: roveapi.StatusRequest
+	(*Log)(nil),                  // 17: roveapi.Log
+	(*Vector)(nil),               // 18: roveapi.Vector
+	(*RoverSpecifications)(nil),  // 19: roveapi.RoverSpecifications
+	(*RoverStatus)(nil),          // 20: roveapi.RoverStatus
+	(*RoverReadings)(nil),        // 21: roveapi.RoverReadings
+	(*StatusResponse)(nil),       // 22: roveapi.StatusResponse
 }
 var file_roveapi_roveapi_proto_depIdxs = []int32{
-	8,  // 0: roveapi.RegisterResponse.account:type_name -> roveapi.Account
+	9,  // 0: roveapi.RegisterResponse.account:type_name -> roveapi.Account
 	0,  // 1: roveapi.Command.command:type_name -> roveapi.CommandType
 	1,  // 2: roveapi.Command.bearing:type_name -> roveapi.Bearing
-	8,  // 3: roveapi.CommandRequest.account:type_name -> roveapi.Account
-	10, // 4: roveapi.CommandRequest.commands:type_name -> roveapi.Command
-	8,  // 5: roveapi.RadarRequest.account:type_name -> roveapi.Account
-	3,  // 6: roveapi.RadarResponse.tiles:type_name -> roveapi.Tile
-	2,  // 7: roveapi.RadarResponse.objects:type_name -> roveapi.Object
-	8,  // 8: roveapi.StatusRequest.account:type_name -> roveapi.Account
-	1,  // 9: roveapi.RoverStatus.bearing:type_name -> roveapi.Bearing
-	4,  // 10: roveapi.RoverStatus.sailPosition:type_name -> roveapi.SailPosition
-	10, // 11: roveapi.RoverStatus.queuedCommands:type_name -> roveapi.Command
-	17, // 12: roveapi.RoverReadings.position:type_name -> roveapi.Vector
-	1,  // 13: roveapi.RoverReadings.wind:type_name -> roveapi.Bearing
-	16, // 14: roveapi.RoverReadings.logs:type_name -> roveapi.Log
-	18, // 15: roveapi.StatusResponse.spec:type_name -> roveapi.RoverSpecifications
-	19, // 16: roveapi.StatusResponse.status:type_name -> roveapi.RoverStatus
-	20, // 17: roveapi.StatusResponse.readings:type_name -> roveapi.RoverReadings
-	5,  // 18: roveapi.Rove.ServerStatus:input_type -> roveapi.ServerStatusRequest
-	7,  // 19: roveapi.Rove.Register:input_type -> roveapi.RegisterRequest
-	11, // 20: roveapi.Rove.Command:input_type -> roveapi.CommandRequest
-	13, // 21: roveapi.Rove.Radar:input_type -> roveapi.RadarRequest
-	15, // 22: roveapi.Rove.Status:input_type -> roveapi.StatusRequest
-	6,  // 23: roveapi.Rove.ServerStatus:output_type -> roveapi.ServerStatusResponse
-	9,  // 24: roveapi.Rove.Register:output_type -> roveapi.RegisterResponse
-	12, // 25: roveapi.Rove.Command:output_type -> roveapi.CommandResponse
-	14, // 26: roveapi.Rove.Radar:output_type -> roveapi.RadarResponse
-	21, // 27: roveapi.Rove.Status:output_type -> roveapi.StatusResponse
-	23, // [23:28] is the sub-list for method output_type
-	18, // [18:23] is the sub-list for method input_type
-	18, // [18:18] is the sub-list for extension type_name
-	18, // [18:18] is the sub-list for extension extendee
-	0,  // [0:18] is the sub-list for field type_name
+	2,  // 3: roveapi.Command.upgrade:type_name -> roveapi.RoverUpgrade
+	9,  // 4: roveapi.CommandRequest.account:type_name -> roveapi.Account
+	11, // 5: roveapi.CommandRequest.commands:type_name -> roveapi.Command
+	9,  // 6: roveapi.RadarRequest.account:type_name -> roveapi.Account
+	4,  // 7: roveapi.RadarResponse.tiles:type_name -> roveapi.Tile
+	3,  // 8: roveapi.RadarResponse.objects:type_name -> roveapi.Object
+	9,  // 9: roveapi.StatusRequest.account:type_name -> roveapi.Account
+	1,  // 10: roveapi.RoverStatus.bearing:type_name -> roveapi.Bearing
+	5,  // 11: roveapi.RoverStatus.sailPosition:type_name -> roveapi.SailPosition
+	11, // 12: roveapi.RoverStatus.queuedCommands:type_name -> roveapi.Command
+	18, // 13: roveapi.RoverReadings.position:type_name -> roveapi.Vector
+	1,  // 14: roveapi.RoverReadings.wind:type_name -> roveapi.Bearing
+	17, // 15: roveapi.RoverReadings.logs:type_name -> roveapi.Log
+	19, // 16: roveapi.StatusResponse.spec:type_name -> roveapi.RoverSpecifications
+	20, // 17: roveapi.StatusResponse.status:type_name -> roveapi.RoverStatus
+	21, // 18: roveapi.StatusResponse.readings:type_name -> roveapi.RoverReadings
+	6,  // 19: roveapi.Rove.ServerStatus:input_type -> roveapi.ServerStatusRequest
+	8,  // 20: roveapi.Rove.Register:input_type -> roveapi.RegisterRequest
+	12, // 21: roveapi.Rove.Command:input_type -> roveapi.CommandRequest
+	14, // 22: roveapi.Rove.Radar:input_type -> roveapi.RadarRequest
+	16, // 23: roveapi.Rove.Status:input_type -> roveapi.StatusRequest
+	7,  // 24: roveapi.Rove.ServerStatus:output_type -> roveapi.ServerStatusResponse
+	10, // 25: roveapi.Rove.Register:output_type -> roveapi.RegisterResponse
+	13, // 26: roveapi.Rove.Command:output_type -> roveapi.CommandResponse
+	15, // 27: roveapi.Rove.Radar:output_type -> roveapi.RadarResponse
+	22, // 28: roveapi.Rove.Status:output_type -> roveapi.StatusResponse
+	24, // [24:29] is the sub-list for method output_type
+	19, // [19:24] is the sub-list for method input_type
+	19, // [19:19] is the sub-list for extension type_name
+	19, // [19:19] is the sub-list for extension extendee
+	0,  // [0:19] is the sub-list for field type_name
 }
 
 func init() { file_roveapi_roveapi_proto_init() }
@@ -1855,7 +1937,7 @@ func file_roveapi_roveapi_proto_init() {
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_roveapi_roveapi_proto_rawDesc,
-			NumEnums:      5,
+			NumEnums:      6,
 			NumMessages:   17,
 			NumExtensions: 0,
 			NumServices:   1,
diff --git a/proto/roveapi/roveapi.proto b/proto/roveapi/roveapi.proto
index 9aad682..72a1fc2 100644
--- a/proto/roveapi/roveapi.proto
+++ b/proto/roveapi/roveapi.proto
@@ -89,22 +89,24 @@ message RegisterResponse {
 // CommandType defines the type of a command to give to the rover
 enum CommandType {
   none = 0;
-  // Toggles the sails, either catching the wind, or charging from the sun
-  toggle = 1;
-  // Turns the rover in the specified bearing (requires bearing)
-  turn = 2;
-  // Stashes item at current location in rover inventory
-  stash = 3;
-  // Repairs the rover using an inventory object
-  repair = 4;
-  // Broadcasts a message to nearby rovers (requires data)
-  broadcast = 5;
-  // Salvages a neighboring dormant rover for parts
-  salvage = 6;
-  // Transfers remote control into dormant rover
-  transfer = 7;
   // Waits before performing the next command
-  wait = 8;
+  wait = 1;
+  // Toggles the sails, either catching the wind, or charging from the sun
+  toggle = 2;
+  // Turns the rover in the specified bearing (requires bearing)
+  turn = 3;
+  // Stashes item at current location in rover inventory
+  stash = 4;
+  // Repairs the rover using an inventory object
+  repair = 5;
+  // Broadcasts a message to nearby rovers (requires data)
+  broadcast = 6;
+  // Salvages a neighboring dormant rover for parts
+  salvage = 7;
+  // Transfers remote control into dormant rover
+  transfer = 8;
+  // Upgrades a chosen rover specification using 5 rover parts
+  upgrade = 9;
 }
 
 // Bearing represents a compass direction
@@ -121,6 +123,15 @@ enum Bearing {
   NorthWest = 8;
 }
 
+// Describes the type of upgrade
+enum RoverUpgrade {
+  RoverUpgradeUnknown = 0;
+  Range = 1;
+  Capacity = 2;
+  MaximumIntegrity = 3;
+  MaximumCharge = 4;
+}
+
 // Command is a single command for a rover
 message Command {
   // The command type
@@ -135,6 +146,9 @@ message Command {
 
   // move - the bearing for the rover to turn to
   Bearing bearing = 4;
+
+  // upgrade - the upgrade to apply to the rover
+  RoverUpgrade upgrade = 5;
 }
 
 // CommandRequest describes a set of commands to be requested for the rover

From b114b68ff751aae8f153da53bd34804f14794d73 Mon Sep 17 00:00:00 2001
From: Marc Di Luzio <marc.diluzio@gmail.com>
Date: Sun, 2 Aug 2020 12:03:12 +0100
Subject: [PATCH 07/10] Add upgrade command code

---
 pkg/rove/world.go | 66 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 66 insertions(+)

diff --git a/pkg/rove/world.go b/pkg/rove/world.go
index d2483b5..64e3982 100644
--- a/pkg/rove/world.go
+++ b/pkg/rove/world.go
@@ -15,6 +15,9 @@ import (
 const (
 	// ticksPerNormalMove defines the number of ticks it should take for a "normal" speed move
 	ticksPerNormalMove = 4
+
+	// upgradeCost is the cost in rover parts needed to upgrade a rover specification
+	upgradeCost = 5
 )
 
 // CommandStream is a list of commands to execute in order
@@ -446,6 +449,63 @@ func (w *World) RoverToggle(rover string) (roveapi.SailPosition, error) {
 	return r.SailPosition, nil
 }
 
+// RoverUpgrade will try to upgrade the rover
+func (w *World) RoverUpgrade(rover string, upgrade roveapi.RoverUpgrade) (int, error) {
+	w.worldMutex.Lock()
+	defer w.worldMutex.Unlock()
+
+	r, ok := w.Rovers[rover]
+	if !ok {
+		return 0, fmt.Errorf("no rover matching id")
+	}
+
+	cost := upgradeCost
+	num := 0
+	for i := range r.Inventory {
+		if r.Inventory[i].Type == roveapi.Object_RoverParts {
+			num++
+		}
+	}
+
+	if num < cost {
+		r.AddLogEntryf("tried to upgrade but lacked rover parts")
+		return 0, nil
+	}
+
+	// Apply the upgrade
+	var ret int
+	switch upgrade {
+	case roveapi.RoverUpgrade_Capacity:
+		r.Capacity++
+		ret = r.Capacity
+	case roveapi.RoverUpgrade_Range:
+		r.Range++
+		ret = r.Range
+	case roveapi.RoverUpgrade_MaximumCharge:
+		r.MaximumCharge++
+		ret = r.MaximumCharge
+	case roveapi.RoverUpgrade_MaximumIntegrity:
+		r.MaximumIntegrity++
+		ret = r.MaximumIntegrity
+	default:
+		return 0, fmt.Errorf("unknown upgrade: %s", upgrade)
+	}
+
+	// Remove the cost in rover parts
+	var n []Object
+	for _, o := range r.Inventory {
+		if o.Type == roveapi.Object_RoverParts && cost > 0 {
+			cost--
+		} else {
+			n = append(n, o)
+		}
+	}
+	// Assign back the inventory
+	r.Inventory = n
+
+	return ret, nil
+}
+
 // RoverTurn will turn the rover
 func (w *World) RoverTurn(rover string, bearing roveapi.Bearing) (roveapi.Bearing, error) {
 	w.worldMutex.Lock()
@@ -582,6 +642,10 @@ func (w *World) Enqueue(rover string, commands ...*roveapi.Command) error {
 			if c.GetBearing() == roveapi.Bearing_BearingUnknown {
 				return fmt.Errorf("turn command given unknown bearing")
 			}
+		case roveapi.CommandType_upgrade:
+			if c.GetUpgrade() == roveapi.RoverUpgrade_RoverUpgradeUnknown {
+				return fmt.Errorf("upgrade command given unknown upgrade")
+			}
 		case roveapi.CommandType_wait:
 		case roveapi.CommandType_toggle:
 		case roveapi.CommandType_stash:
@@ -729,6 +793,8 @@ func (w *World) ExecuteCommand(c *roveapi.Command, rover string) (done bool, err
 		_, err = w.RoverSalvage(rover)
 	case roveapi.CommandType_transfer:
 		_, err = w.RoverTransfer(rover)
+	case roveapi.CommandType_upgrade:
+		_, err = w.RoverUpgrade(rover, c.GetUpgrade())
 	case roveapi.CommandType_wait:
 		// Nothing to do
 	default:

From 4e4af1a1beeaf042b9fad985a99f14a7fb9323eb Mon Sep 17 00:00:00 2001
From: Marc Di Luzio <marc.diluzio@gmail.com>
Date: Sun, 2 Aug 2020 12:15:49 +0100
Subject: [PATCH 08/10] Add a test for the upgrade command

---
 pkg/rove/command_test.go | 55 ++++++++++++++++++++++++++++++++++++++++
 pkg/rove/world.go        |  2 ++
 2 files changed, 57 insertions(+)

diff --git a/pkg/rove/command_test.go b/pkg/rove/command_test.go
index dde7070..bf1eed6 100644
--- a/pkg/rove/command_test.go
+++ b/pkg/rove/command_test.go
@@ -248,3 +248,58 @@ func TestCommand_Wait(t *testing.T) {
 	assert.NoError(t, err)
 	assert.Equal(t, roveapi.SailPosition_CatchingWind, r.SailPosition)
 }
+
+func TestCommand_Upgrade(t *testing.T) {
+	w := NewWorld(8)
+	name, err := w.SpawnRover("")
+	assert.NoError(t, err)
+	rover, ok := w.Rovers[name]
+	assert.True(t, ok)
+
+	// Try an invalid upgrade
+	err = w.Enqueue(name, &roveapi.Command{Command: roveapi.CommandType_upgrade})
+	assert.Error(t, err)
+
+	// Try a valid command but without the parts
+	err = w.Enqueue(name, &roveapi.Command{Command: roveapi.CommandType_upgrade, Upgrade: roveapi.RoverUpgrade_Capacity})
+	assert.NoError(t, err)
+
+	// Ensure nothing changed and we logged the attempt
+	pre := rover.Capacity
+	w.Tick()
+	assert.Equal(t, pre, rover.Capacity)
+	assert.Contains(t, rover.Logs[len(rover.Logs)-1].Text, "tried")
+
+	// One non-part item
+	rover.Inventory = []Object{
+		{
+			Type: roveapi.Object_RoverParts,
+		},
+		{
+			Type: roveapi.Object_RoverParts,
+		},
+		{
+			Type: roveapi.Object_RockSmall,
+		},
+		{
+			Type: roveapi.Object_RoverParts,
+		},
+		{
+			Type: roveapi.Object_RoverParts,
+		},
+		{
+			Type: roveapi.Object_RoverParts,
+		},
+	}
+
+	// Try a valid command again
+	err = w.Enqueue(name, &roveapi.Command{Command: roveapi.CommandType_upgrade, Upgrade: roveapi.RoverUpgrade_Capacity})
+	assert.NoError(t, err)
+
+	// Check that the capacity increases on the tick and all the parts are used
+	pre = rover.Capacity
+	w.Tick()
+	assert.Equal(t, pre+1, rover.Capacity)
+	assert.Equal(t, 1, len(rover.Inventory))
+	assert.Equal(t, roveapi.Object_RockSmall, rover.Inventory[0].Type)
+}
diff --git a/pkg/rove/world.go b/pkg/rove/world.go
index 64e3982..d509d8d 100644
--- a/pkg/rove/world.go
+++ b/pkg/rove/world.go
@@ -503,6 +503,8 @@ func (w *World) RoverUpgrade(rover string, upgrade roveapi.RoverUpgrade) (int, e
 	// Assign back the inventory
 	r.Inventory = n
 
+	r.AddLogEntryf("upgraded %s to %d", upgrade, ret)
+
 	return ret, nil
 }
 

From 804f82dd2015121222d758bbcb74d41a14d0ae4e Mon Sep 17 00:00:00 2001
From: Marc Di Luzio <marc.diluzio@gmail.com>
Date: Sun, 2 Aug 2020 12:43:44 +0100
Subject: [PATCH 09/10] Fix up commandline interface for repeat commands to go
 after the command

---
 cmd/rove/main.go      | 56 ++++++++++++++++++++-----------------------
 cmd/rove/main_test.go |  4 ++--
 2 files changed, 28 insertions(+), 32 deletions(-)

diff --git a/cmd/rove/main.go b/cmd/rove/main.go
index 06999d3..551cda1 100644
--- a/cmd/rove/main.go
+++ b/cmd/rove/main.go
@@ -35,7 +35,7 @@ func printUsage() {
 	fmt.Fprintln(os.Stderr, "\tregister NAME                 registers an account and spawns a rover")
 	fmt.Fprintln(os.Stderr, "\tradar                         prints radar data in ASCII form")
 	fmt.Fprintln(os.Stderr, "\tstatus                        gets rover status")
-	fmt.Fprintln(os.Stderr, "\tcommand [REPEAT] CMD [VAL...] queues commands, accepts multiple in sequence for command values see below")
+	fmt.Fprintln(os.Stderr, "\tcommand CMD [VAL...] [REPEAT] sets the command queue, accepts multiple in sequence")
 	fmt.Fprintf(os.Stderr, "\n")
 	fmt.Fprintln(os.Stderr, "Rover commands:")
 	fmt.Fprintln(os.Stderr, "\ttoggle         toggles the current sail mode")
@@ -247,16 +247,8 @@ func InnerMain(command string, args ...string) error {
 		// Iterate through each command
 		var commands []*roveapi.Command
 		for i := 0; i < len(args); i++ {
-			number := 0
-			num, err := strconv.Atoi(args[i])
-			if err == nil {
-				number = num
-				i++
-				if i >= len(args) {
-					return fmt.Errorf("must pass command after repeat number")
-				}
-			}
 
+			var cmd *roveapi.Command
 			switch args[i] {
 			case "turn":
 				i++
@@ -267,13 +259,10 @@ func InnerMain(command string, args ...string) error {
 				if b == roveapi.Bearing_BearingUnknown {
 					return fmt.Errorf("turn command must be given a valid bearing %s", args[i])
 				}
-				commands = append(commands,
-					&roveapi.Command{
-						Command: roveapi.CommandType_turn,
-						Bearing: b,
-						Repeat:  int32(number),
-					},
-				)
+				cmd = &roveapi.Command{
+					Command: roveapi.CommandType_turn,
+					Bearing: b,
+				}
 			case "broadcast":
 				i++
 				if len(args) == i {
@@ -281,22 +270,29 @@ func InnerMain(command string, args ...string) error {
 				} else if len(args[i]) > 3 {
 					return fmt.Errorf("broadcast command must be given ASCII triplet of 3 or less: %s", args[i])
 				}
-				commands = append(commands,
-					&roveapi.Command{
-						Command: roveapi.CommandType_broadcast,
-						Data:    []byte(args[i]),
-						Repeat:  int32(number),
-					},
-				)
+				cmd = &roveapi.Command{
+					Command: roveapi.CommandType_broadcast,
+					Data:    []byte(args[i]),
+				}
 			default:
 				// By default just use the command literally
-				commands = append(commands,
-					&roveapi.Command{
-						Command: roveapi.CommandType(roveapi.CommandType_value[args[i]]),
-						Repeat:  int32(number),
-					},
-				)
+				cmd = &roveapi.Command{
+					Command: roveapi.CommandType(roveapi.CommandType_value[args[i]]),
+				}
 			}
+
+			// Try and convert the next command to a number
+			number := 0
+			if len(args) > i+1 {
+				num, err := strconv.Atoi(args[i+1])
+				if err == nil {
+					number = num
+					i++
+				}
+			}
+			cmd.Repeat = int32(number)
+
+			commands = append(commands, cmd)
 		}
 
 		_, err := client.Command(ctx, &roveapi.CommandRequest{
diff --git a/cmd/rove/main_test.go b/cmd/rove/main_test.go
index 25e08ae..ca83947 100644
--- a/cmd/rove/main_test.go
+++ b/cmd/rove/main_test.go
@@ -55,8 +55,8 @@ func Test_InnerMain(t *testing.T) {
 	assert.NoError(t, InnerMain("command", "stash"))
 	assert.NoError(t, InnerMain("command", "repair"))
 	assert.NoError(t, InnerMain("command", "broadcast", "abc"))
-	assert.NoError(t, InnerMain("command", "10", "wait"))
-	assert.NoError(t, InnerMain("command", "1", "wait", "turn", "NW", "toggle", "broadcast", "zyx"))
+	assert.NoError(t, InnerMain("command", "wait", "10"))
+	assert.NoError(t, InnerMain("command", "wait", "1", "turn", "NW", "toggle", "broadcast", "zyx"))
 
 	// Give it malformed commands
 	assert.Error(t, InnerMain("command", "unknown"))

From 35b25dde9880436fe4a2394fc2bdf47e5733f271 Mon Sep 17 00:00:00 2001
From: Marc Di Luzio <marc.diluzio@gmail.com>
Date: Sun, 2 Aug 2020 12:49:15 +0100
Subject: [PATCH 10/10] Add the upgrade command to the cmdline client

---
 cmd/rove/main.go      | 23 +++++++++++++++++++++++
 cmd/rove/main_test.go |  2 ++
 2 files changed, 25 insertions(+)

diff --git a/cmd/rove/main.go b/cmd/rove/main.go
index 551cda1..f1e993d 100644
--- a/cmd/rove/main.go
+++ b/cmd/rove/main.go
@@ -44,6 +44,7 @@ func printUsage() {
 	fmt.Fprintln(os.Stderr, "\tbroadcast MSG  broadcast a simple ASCII triplet to nearby rovers")
 	fmt.Fprintln(os.Stderr, "\tsalvage        salvages a dormant rover for parts")
 	fmt.Fprintln(os.Stderr, "\ttransfer       transfer's control into a dormant rover")
+	fmt.Fprintln(os.Stderr, "\tupgrade SPEC   spends rover parts to upgrade one rover spec (capacity, range, integrity, charge")
 	fmt.Fprintln(os.Stderr, "\twait           waits before performing the next command")
 	fmt.Fprintf(os.Stderr, "\n")
 	fmt.Fprintln(os.Stderr, "Environment")
@@ -274,6 +275,28 @@ func InnerMain(command string, args ...string) error {
 					Command: roveapi.CommandType_broadcast,
 					Data:    []byte(args[i]),
 				}
+			case "upgrade":
+				i++
+				if len(args) == i {
+					return fmt.Errorf("upgrade command must be passed a spec to upgrade")
+				}
+				var u roveapi.RoverUpgrade
+				switch args[i] {
+				case "capacity":
+					u = roveapi.RoverUpgrade_Capacity
+				case "range":
+					u = roveapi.RoverUpgrade_Range
+				case "integrity":
+					u = roveapi.RoverUpgrade_MaximumIntegrity
+				case "charge":
+					u = roveapi.RoverUpgrade_MaximumCharge
+				default:
+					return fmt.Errorf("upgrade command must be passed a known upgrade spec")
+				}
+				cmd = &roveapi.Command{
+					Command: roveapi.CommandType_upgrade,
+					Upgrade: u,
+				}
 			default:
 				// By default just use the command literally
 				cmd = &roveapi.Command{
diff --git a/cmd/rove/main_test.go b/cmd/rove/main_test.go
index ca83947..250988a 100644
--- a/cmd/rove/main_test.go
+++ b/cmd/rove/main_test.go
@@ -54,6 +54,7 @@ func Test_InnerMain(t *testing.T) {
 	assert.NoError(t, InnerMain("command", "toggle"))
 	assert.NoError(t, InnerMain("command", "stash"))
 	assert.NoError(t, InnerMain("command", "repair"))
+	assert.NoError(t, InnerMain("command", "upgrade", "capacity"))
 	assert.NoError(t, InnerMain("command", "broadcast", "abc"))
 	assert.NoError(t, InnerMain("command", "wait", "10"))
 	assert.NoError(t, InnerMain("command", "wait", "1", "turn", "NW", "toggle", "broadcast", "zyx"))
@@ -61,5 +62,6 @@ func Test_InnerMain(t *testing.T) {
 	// Give it malformed commands
 	assert.Error(t, InnerMain("command", "unknown"))
 	assert.Error(t, InnerMain("command", "broadcast"))
+	assert.Error(t, InnerMain("command", "upgrade"))
 	assert.Error(t, InnerMain("command", "1"))
 }