Merge pull request #34 from mdiluz/implement-salvage

Add rover salvage mechanics

cmd/rove-server/internal/routes.go

@@ -34,7 +34,7 @@ func (s *Server) Register(ctx context.Context, req *roveapi.RegisterRequest) (*r
 		return nil, fmt.Errorf("empty account name")
 	}
 
-	if acc, err := s.accountant.RegisterAccount(req.Name); err != nil {
+	if acc, err := s.world.Accountant.RegisterAccount(req.Name); err != nil {
 		return nil, err
 
 	} else if _, err := s.SpawnRoverForAccount(req.Name); err != nil {
@@ -57,13 +57,13 @@ func (s *Server) Register(ctx context.Context, req *roveapi.RegisterRequest) (*r
 func (s *Server) Status(ctx context.Context, req *roveapi.StatusRequest) (response *roveapi.StatusResponse, err error) {
 	log.Printf("Handling status request: %s\n", req.Account.Name)
 
-	if valid, err := s.accountant.VerifySecret(req.Account.Name, req.Account.Secret); err != nil {
+	if valid, err := s.world.Accountant.VerifySecret(req.Account.Name, req.Account.Secret); err != nil {
 		return nil, err
 
 	} else if !valid {
 		return nil, fmt.Errorf("Secret incorrect for account %s", req.Account.Name)
 
-	} else if resp, err := s.accountant.GetValue(req.Account.Name, "rover"); err != nil {
+	} else if resp, err := s.world.Accountant.GetValue(req.Account.Name, "rover"); err != nil {
 		return nil, err
 
 	} else if rover, err := s.world.GetRover(resp); err != nil {
@@ -117,7 +117,7 @@ func (s *Server) Status(ctx context.Context, req *roveapi.StatusRequest) (respon
 func (s *Server) Radar(ctx context.Context, req *roveapi.RadarRequest) (*roveapi.RadarResponse, error) {
 	log.Printf("Handling radar request: %s\n", req.Account.Name)
 
-	if valid, err := s.accountant.VerifySecret(req.Account.Name, req.Account.Secret); err != nil {
+	if valid, err := s.world.Accountant.VerifySecret(req.Account.Name, req.Account.Secret); err != nil {
 		return nil, err
 
 	} else if !valid {
@@ -126,7 +126,7 @@ func (s *Server) Radar(ctx context.Context, req *roveapi.RadarRequest) (*roveapi
 
 	response := &roveapi.RadarResponse{}
 
-	resp, err := s.accountant.GetValue(req.Account.Name, "rover")
+	resp, err := s.world.Accountant.GetValue(req.Account.Name, "rover")
 	if err != nil {
 		return nil, err
 
@@ -149,14 +149,14 @@ func (s *Server) Radar(ctx context.Context, req *roveapi.RadarRequest) (*roveapi
 func (s *Server) Command(ctx context.Context, req *roveapi.CommandRequest) (*roveapi.CommandResponse, error) {
 	log.Printf("Handling command request: %s and %+v\n", req.Account.Name, req.Commands)
 
-	if valid, err := s.accountant.VerifySecret(req.Account.Name, req.Account.Secret); err != nil {
+	if valid, err := s.world.Accountant.VerifySecret(req.Account.Name, req.Account.Secret); err != nil {
 		return nil, err
 
 	} else if !valid {
 		return nil, fmt.Errorf("Secret incorrect for account %s", req.Account.Name)
 	}
 
-	resp, err := s.accountant.GetValue(req.Account.Name, "rover")
+	resp, err := s.world.Accountant.GetValue(req.Account.Name, "rover")
 	if err != nil {
 		return nil, err
 	}

cmd/rove-server/internal/server.go

@@ -27,9 +27,6 @@ type Server struct {
 	// Internal state
 	world *rove.World
 
-	// Accountant
-	accountant Accountant
-
 	// gRPC server
 	netListener net.Listener
 	grpcServ    *grpc.Server
@@ -80,7 +77,6 @@ func NewServer(opts ...ServerOption) *Server {
 		persistence: EphemeralData,
 		schedule:    cron.New(),
 		world:       rove.NewWorld(32),
-		accountant:  NewSimpleAccountant(),
 	}
 
 	// Apply all options
@@ -188,7 +184,7 @@ func (s *Server) SaveWorld() error {
 	if s.persistence == PersistentData {
 		s.world.RLock()
 		defer s.world.RUnlock()
-		if err := persistence.SaveAll("world", s.world, "accounts", s.accountant); err != nil {
+		if err := persistence.SaveAll("world", s.world); err != nil {
 			return fmt.Errorf("failed to save out persistent data: %s", err)
 		}
 	}
@@ -200,7 +196,7 @@ func (s *Server) LoadWorld() error {
 	if s.persistence == PersistentData {
 		s.world.Lock()
 		defer s.world.Unlock()
-		if err := persistence.LoadAll("world", &s.world, "accounts", &s.accountant); err != nil {
+		if err := persistence.LoadAll("world", &s.world); err != nil {
 			return err
 		}
 	}
@@ -209,22 +205,10 @@ func (s *Server) LoadWorld() error {
 
 // SpawnRoverForAccount spawns the rover rover for an account
 func (s *Server) SpawnRoverForAccount(account string) (string, error) {
-	inst, err := s.world.SpawnRover()
+	inst, err := s.world.SpawnRover(account)
 	if err != nil {
 		return "", err
 	}
 
-	err = s.accountant.AssignData(account, "rover", inst)
-	if err != nil {
-		log.Printf("Failed to assign rover to account, %s", err)
-
-		// Try and clear up the rover
-		if err := s.world.DestroyRover(inst); err != nil {
-			log.Printf("Failed to destroy rover after failed rover assign: %s", err)
-		}
-
-		return "", err
-	}
-
 	return inst, nil
 }

cmd/rove/main.go

@@ -37,6 +37,7 @@ func printUsage() {
 	fmt.Fprintln(os.Stderr, "\tstash                      stores the object at the rover location in the inventory")
 	fmt.Fprintln(os.Stderr, "\trepair                     uses an inventory object to repair the rover")
 	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, "\nEnvironment")
 	fmt.Fprintln(os.Stderr, "\tROVE_USER_DATA             path to user data, defaults to "+defaultDataPath)
 }
@@ -243,8 +244,8 @@ func InnerMain(command string, args ...string) error {
 				}
 				commands = append(commands,
 					&roveapi.Command{
-						Command:   roveapi.CommandType_broadcast,
+						Command: roveapi.CommandType_turn,
-						Broadcast: []byte(args[i]),
+						Bearing: b,
 					},
 				)
 			case "broadcast":
@@ -257,7 +258,7 @@ func InnerMain(command string, args ...string) error {
 				commands = append(commands,
 					&roveapi.Command{
 						Command: roveapi.CommandType_broadcast,
-						Broadcast: []byte(args[i]),
+						Data:    []byte(args[i]),
 					},
 				)
 			default:

pkg/accounts/accounts.go

@@ -1,4 +1,4 @@
-package internal
+package accounts
 
 // Accountant decribes something that stores accounts and account values
 type Accountant interface {

pkg/accounts/accounts_test.go

@@ -1,4 +1,4 @@
-package internal
+package accounts
 
 import (
 	"testing"

pkg/accounts/simpleAccountant.go

@@ -1,4 +1,4 @@
-package internal
+package accounts
 
 import (
 	"fmt"

pkg/rove/command_test.go

@@ -1,6 +1,7 @@
 package rove
 
 import (
+	"encoding/json"
 	"testing"
 
 	"github.com/mdiluz/rove/pkg/maths"
@@ -10,7 +11,7 @@ import (
 
 func TestCommand_Toggle(t *testing.T) {
 	w := NewWorld(8)
-	a, err := w.SpawnRover()
+	a, err := w.SpawnRover("")
 	assert.NoError(t, err)
 
 	r, err := w.GetRover(a)
@@ -36,10 +37,10 @@ func TestCommand_Toggle(t *testing.T) {
 
 func TestCommand_Turn(t *testing.T) {
 	w := NewWorld(8)
-	a, err := w.SpawnRover()
+	a, err := w.SpawnRover("")
 	assert.NoError(t, err)
 
-	err = w.Enqueue(a, &roveapi.Command{Command: roveapi.CommandType_turn, Turn: roveapi.Bearing_NorthWest})
+	err = w.Enqueue(a, &roveapi.Command{Command: roveapi.CommandType_turn, Bearing: roveapi.Bearing_NorthWest})
 	assert.NoError(t, err)
 	w.Tick()
 
@@ -50,7 +51,7 @@ func TestCommand_Turn(t *testing.T) {
 
 func TestCommand_Stash(t *testing.T) {
 	w := NewWorld(8)
-	name, err := w.SpawnRover()
+	name, err := w.SpawnRover("")
 	assert.NoError(t, err)
 
 	info, err := w.GetRover(name)
@@ -78,7 +79,7 @@ func TestCommand_Stash(t *testing.T) {
 
 func TestCommand_Repair(t *testing.T) {
 	w := NewWorld(8)
-	name, err := w.SpawnRover()
+	name, err := w.SpawnRover("")
 	assert.NoError(t, err)
 
 	info, err := w.GetRover(name)
@@ -99,10 +100,10 @@ func TestCommand_Repair(t *testing.T) {
 	assert.Equal(t, info.MaximumIntegrity-1, info.Integrity)
 
 	// Stash a repair object
-	w.Atlas.SetObject(info.Pos, Object{Type: roveapi.Object_RockSmall})
+	w.Atlas.SetObject(info.Pos, Object{Type: roveapi.Object_RoverParts})
 	obj, err := w.RoverStash(name)
 	assert.NoError(t, err)
-	assert.Equal(t, roveapi.Object_RockSmall, obj)
+	assert.Equal(t, roveapi.Object_RoverParts, obj)
 
 	// Enqueue the repair and tick
 	err = w.Enqueue(name, &roveapi.Command{Command: roveapi.CommandType_repair})
@@ -118,11 +119,11 @@ func TestCommand_Repair(t *testing.T) {
 
 func TestCommand_Broadcast(t *testing.T) {
 	w := NewWorld(8)
-	name, err := w.SpawnRover()
+	name, err := w.SpawnRover("")
 	assert.NoError(t, err)
 
 	// Enqueue the broadcast and tick
-	err = w.Enqueue(name, &roveapi.Command{Command: roveapi.CommandType_broadcast, Broadcast: []byte("ABC")})
+	err = w.Enqueue(name, &roveapi.Command{Command: roveapi.CommandType_broadcast, Data: []byte("ABC")})
 	assert.NoError(t, err)
 	w.Tick()
 
@@ -131,9 +132,88 @@ func TestCommand_Broadcast(t *testing.T) {
 	assert.Contains(t, info.Logs[len(info.Logs)-1].Text, "ABC")
 }
 
+func TestCommand_Salvage(t *testing.T) {
+	w := NewWorld(8)
+	name, err := w.SpawnRover("")
+	assert.NoError(t, err)
+
+	info, err := w.GetRover(name)
+	assert.NoError(t, err)
+
+	w.Atlas.SetObject(info.Pos, Object{Type: roveapi.Object_RoverDormant})
+
+	// Enqueue the broadcast and tick
+	err = w.Enqueue(name, &roveapi.Command{Command: roveapi.CommandType_salvage})
+	assert.NoError(t, err)
+	w.Tick()
+
+	// Check we now have some rover parts
+	info, err = w.GetRover(name)
+	assert.NoError(t, err)
+	assert.NotEmpty(t, info.Inventory)
+	for _, i := range info.Inventory {
+		assert.Equal(t, roveapi.Object_RoverParts, i.Type)
+	}
+
+	// Check the dormant rover is gone
+	_, obj := w.Atlas.QueryPosition(info.Pos)
+	assert.Equal(t, roveapi.Object_ObjectUnknown, obj.Type)
+}
+
+func TestCommand_Transfer(t *testing.T) {
+	w := NewWorld(8)
+	acc, err := w.Accountant.RegisterAccount("tmp")
+	assert.NoError(t, err)
+	nameA, err := w.SpawnRover(acc.Name)
+	assert.NoError(t, err)
+
+	infoA, err := w.GetRover(nameA)
+	assert.NoError(t, err)
+
+	// Drop a dormant rover on the current position
+	infoB := DefaultRover()
+	infoB.Name = "abc"
+	infoB.Pos = infoA.Pos
+	data, err := json.Marshal(infoB)
+	assert.NoError(t, err)
+	w.Atlas.SetObject(infoA.Pos, Object{Type: roveapi.Object_RoverDormant, Data: data})
+
+	// Enqueue a transfer as well as a dud command
+	err = w.Enqueue(nameA,
+		&roveapi.Command{Command: roveapi.CommandType_transfer},
+		&roveapi.Command{Command: roveapi.CommandType_broadcast, Data: []byte("xyz")})
+	assert.NoError(t, err)
+	w.Tick()
+
+	// Ensure both command queues are empty
+	assert.Empty(t, w.CommandQueue[nameA])
+	assert.Empty(t, w.CommandQueue[infoB.Name])
+
+	// Verify the account now controls the new rover
+	accountRover, err := w.Accountant.GetValue(acc.Name, "rover")
+	assert.NoError(t, err)
+	assert.Equal(t, infoB.Name, accountRover)
+
+	// Verify the position now has a dormant rover
+	_, obj := w.Atlas.QueryPosition(infoA.Pos)
+	assert.Equal(t, roveapi.Object_RoverDormant, obj.Type)
+
+	// Verify the stored data matches
+	var stored Rover
+	err = json.Unmarshal(obj.Data, &stored)
+	assert.NoError(t, err)
+	assert.Equal(t, infoA.Name, stored.Name)
+
+	// Verify the new rover data matches what we put in
+	infoB2, err := w.GetRover(infoB.Name)
+	assert.NoError(t, err)
+	assert.Equal(t, infoB.Name, infoB2.Name)
+
+}
+
 func TestCommand_Invalid(t *testing.T) {
 	w := NewWorld(8)
-	name, err := w.SpawnRover()
+	name, err := w.SpawnRover("")
 	assert.NoError(t, err)
 
 	err = w.Enqueue(name, &roveapi.Command{Command: roveapi.CommandType_none})

pkg/rove/objects.go

@@ -17,7 +17,6 @@ type Object struct {
 func (o *Object) IsBlocking() bool {
 	var blocking = [...]roveapi.Object{
 		roveapi.Object_RoverLive,
-		roveapi.Object_RoverDormant,
 		roveapi.Object_RockLarge,
 	}
 
@@ -33,6 +32,7 @@ func (o *Object) IsBlocking() bool {
 func (o *Object) IsStashable() bool {
 	var stashable = [...]roveapi.Object{
 		roveapi.Object_RockSmall,
+		roveapi.Object_RoverParts,
 	}
 
 	for _, t := range stashable {

pkg/rove/rover.go

@@ -66,6 +66,9 @@ type Rover struct {
 
 	// Logs Stores log of information
 	Logs []RoverLogEntry
+
+	// The account that owns this rover
+	Owner string
 }
 
 // DefaultRover returns a default rover object with default settings

pkg/rove/world.go

@@ -1,11 +1,13 @@
 package rove
 
 import (
+	"encoding/json"
 	"fmt"
 	"log"
 	"math/rand"
 	"sync"
 
+	"github.com/mdiluz/rove/pkg/accounts"
 	"github.com/mdiluz/rove/pkg/maths"
 	"github.com/mdiluz/rove/proto/roveapi"
 )
@@ -39,6 +41,9 @@ type World struct {
 	// Commands is the set of currently executing command streams per rover
 	CommandQueue map[string]CommandStream
 
+	// Accountant
+	Accountant accounts.Accountant
+
 	// Mutex to lock around all world operations
 	worldMutex sync.RWMutex
 	// Mutex to lock around command operations
@@ -53,17 +58,21 @@ func NewWorld(chunkSize int) *World {
 		Atlas:        NewChunkAtlas(chunkSize),
 		TicksPerDay:  24,
 		CurrentTicks: 0,
+		Accountant:   accounts.NewSimpleAccountant(),
 	}
 }
 
 // SpawnRover adds an rover to the game
-func (w *World) SpawnRover() (string, error) {
+func (w *World) SpawnRover(account string) (string, error) {
 	w.worldMutex.Lock()
 	defer w.worldMutex.Unlock()
 
 	// Initialise the rover
 	rover := DefaultRover()
 
+	// Assign the owner
+	rover.Owner = account
+
 	// Spawn in a random place near the origin
 	rover.Pos = maths.Vector{
 		X: 10 - rand.Intn(20),
@@ -88,7 +97,13 @@ func (w *World) SpawnRover() (string, error) {
 	// Append the rover to the list
 	w.Rovers[rover.Name] = rover
 
-	return rover.Name, nil
+	var err error
+	// Only assign if we've been given an account
+	if len(account) > 0 {
+		err = w.Accountant.AssignData(account, "rover", rover.Name)
+	}
+
+	return rover.Name, err
 }
 
 // GetRover gets a specific rover by name
@@ -280,11 +295,13 @@ func (w *World) RoverStash(rover string) (roveapi.Object, error) {
 
 	// Can't pick up when full
 	if len(r.Inventory) >= r.Capacity {
+		r.AddLogEntryf("tried to stash object but inventory was full")
 		return roveapi.Object_ObjectUnknown, nil
 	}
 
 	// Ensure the rover has energy
 	if r.Charge <= 0 {
+		r.AddLogEntryf("tried to stash object but had no charge")
 		return roveapi.Object_ObjectUnknown, nil
 	}
 	r.Charge--
@@ -300,6 +317,99 @@ func (w *World) RoverStash(rover string) (roveapi.Object, error) {
 	return obj.Type, nil
 }
 
+// RoverSalvage will salvage a rover for parts
+func (w *World) RoverSalvage(rover string) (roveapi.Object, error) {
+	w.worldMutex.Lock()
+	defer w.worldMutex.Unlock()
+
+	r, ok := w.Rovers[rover]
+	if !ok {
+		return roveapi.Object_ObjectUnknown, fmt.Errorf("no rover matching id")
+	}
+
+	// Can't pick up when full
+	if len(r.Inventory) >= r.Capacity {
+		r.AddLogEntryf("tried to salvage dormant rover but inventory was full")
+		return roveapi.Object_ObjectUnknown, nil
+	}
+
+	// Ensure the rover has energy
+	if r.Charge <= 0 {
+		r.AddLogEntryf("tried to salvage dormant rover but had no charge")
+		return roveapi.Object_ObjectUnknown, nil
+	}
+	r.Charge--
+
+	_, obj := w.Atlas.QueryPosition(r.Pos)
+	if obj.Type != roveapi.Object_RoverDormant {
+		r.AddLogEntryf("tried to salvage dormant rover but found no rover to salvage")
+		return roveapi.Object_ObjectUnknown, nil
+	}
+
+	r.AddLogEntryf("salvaged dormant rover")
+	for i := 0; i < 5; i++ {
+		if len(r.Inventory) == r.Capacity {
+			break
+		}
+		r.Inventory = append(r.Inventory, Object{Type: roveapi.Object_RoverParts})
+	}
+	w.Atlas.SetObject(r.Pos, Object{Type: roveapi.Object_ObjectUnknown})
+	return obj.Type, nil
+}
+
+// RoverTransfer will transfer rover control to dormant rover
+func (w *World) RoverTransfer(rover string) (string, error) {
+	w.worldMutex.Lock()
+	defer w.worldMutex.Unlock()
+
+	oldRover, ok := w.Rovers[rover]
+	if !ok {
+		return "", fmt.Errorf("no rover matching id")
+	}
+
+	_, obj := w.Atlas.QueryPosition(oldRover.Pos)
+	if obj.Type != roveapi.Object_RoverDormant {
+		oldRover.AddLogEntryf("tried to transfer to dormant rover but found no rover")
+		return "", nil
+	}
+
+	// Unmarshal the dormant rover
+	var newRover Rover
+	err := json.Unmarshal(obj.Data, &newRover)
+	if err != nil {
+		return "", err
+	}
+
+	// Add logs
+	oldRover.AddLogEntryf("transferring to dormant rover %s", newRover.Name)
+	newRover.AddLogEntryf("transferred from rover %s", oldRover.Name)
+
+	// Transfer the ownership
+	err = w.Accountant.AssignData(oldRover.Owner, "rover", newRover.Name)
+	if err != nil {
+		return "", err
+	}
+	newRover.Owner = oldRover.Owner
+	oldRover.Owner = ""
+
+	// Place the old rover in the world
+	oldRoverData, err := json.Marshal(oldRover)
+	if err != nil {
+		return "", err
+	}
+	w.Atlas.SetObject(oldRover.Pos, Object{Type: roveapi.Object_RoverDormant, Data: oldRoverData})
+
+	// Swap the rovers in the tracking
+	w.Rovers[newRover.Name] = &newRover
+	delete(w.Rovers, oldRover.Name)
+
+	// Clear the command queues for both rovers
+	delete(w.CommandQueue, oldRover.Name)
+	delete(w.CommandQueue, newRover.Name)
+
+	return newRover.Name, nil
+}
+
 // RoverToggle will toggle the sail position
 func (w *World) RoverToggle(rover string) (roveapi.SailPosition, error) {
 	w.worldMutex.Lock()
@@ -352,11 +462,24 @@ func (w *World) RoverRepair(rover string) (int, error) {
 		return 0, fmt.Errorf("no rover matching id")
 	}
 
-	// Consume an inventory item to repair if possible
+	// Can't repair past max
-	if len(r.Inventory) > 0 && r.Integrity < r.MaximumIntegrity {
+	if r.Integrity >= r.MaximumIntegrity {
+		return r.Integrity, nil
+	}
+
+	// Find rover parts in inventory
+	for i, o := range r.Inventory {
+		if o.Type == roveapi.Object_RoverParts {
+
+			// Copy-erase from slice
+			r.Inventory[i] = r.Inventory[len(r.Inventory)-1]
 			r.Inventory = r.Inventory[:len(r.Inventory)-1]
+
+			// Repair
 			r.Integrity = r.Integrity + 1
 			r.AddLogEntryf("repaired self to %d", r.Integrity)
+			break
+		}
 	}
 
 	return r.Integrity, nil
@@ -435,21 +558,23 @@ func (w *World) Enqueue(rover string, commands ...*roveapi.Command) error {
 	for _, c := range commands {
 		switch c.Command {
 		case roveapi.CommandType_broadcast:
-			if len(c.GetBroadcast()) > 3 {
+			if len(c.GetData()) > 3 {
-				return fmt.Errorf("too many characters in message (limit 3): %d", len(c.GetBroadcast()))
+				return fmt.Errorf("too many characters in message (limit 3): %d", len(c.GetData()))
 			}
-			for _, b := range c.GetBroadcast() {
+			for _, b := range c.GetData() {
 				if b < 37 || b > 126 {
 					return fmt.Errorf("invalid message character: %c", b)
 				}
 			}
 		case roveapi.CommandType_turn:
-			if c.GetTurn() == roveapi.Bearing_BearingUnknown {
+			if c.GetBearing() == roveapi.Bearing_BearingUnknown {
 				return fmt.Errorf("turn command given unknown bearing")
 			}
 		case roveapi.CommandType_toggle:
 		case roveapi.CommandType_stash:
 		case roveapi.CommandType_repair:
+		case roveapi.CommandType_salvage:
+		case roveapi.CommandType_transfer:
 			// Nothing to verify
 		default:
 			return fmt.Errorf("unknown command: %s", c.Command)
@@ -481,7 +606,10 @@ func (w *World) Tick() {
 			}
 
 			// Extract the first command in the queue
+			// Only if the command queue still has entries
+			if _, ok := w.CommandQueue[rover]; ok {
 				w.CommandQueue[rover] = cmds[1:]
+			}
 
 		} else {
 			// Clean out the empty entry
@@ -569,12 +697,22 @@ func (w *World) ExecuteCommand(c *roveapi.Command, rover string) (err error) {
 		}
 
 	case roveapi.CommandType_broadcast:
-		if err := w.RoverBroadcast(rover, c.GetBroadcast()); err != nil {
+		if err := w.RoverBroadcast(rover, c.GetData()); err != nil {
 			return err
 		}
 
 	case roveapi.CommandType_turn:
-		if _, err := w.RoverTurn(rover, c.GetTurn()); err != nil {
+		if _, err := w.RoverTurn(rover, c.GetBearing()); err != nil {
+			return err
+		}
+
+	case roveapi.CommandType_salvage:
+		if _, err := w.RoverSalvage(rover); err != nil {
+			return err
+		}
+
+	case roveapi.CommandType_transfer:
+		if _, err := w.RoverTransfer(rover); err != nil {
 			return err
 		}
 

pkg/rove/world_test.go

@@ -18,9 +18,9 @@ func TestNewWorld(t *testing.T) {
 
 func TestWorld_CreateRover(t *testing.T) {
 	world := NewWorld(8)
-	a, err := world.SpawnRover()
+	a, err := world.SpawnRover("")
 	assert.NoError(t, err)
-	b, err := world.SpawnRover()
+	b, err := world.SpawnRover("")
 	assert.NoError(t, err)
 
 	// Basic duplicate check
@@ -33,7 +33,7 @@ func TestWorld_CreateRover(t *testing.T) {
 
 func TestWorld_GetRover(t *testing.T) {
 	world := NewWorld(4)
-	a, err := world.SpawnRover()
+	a, err := world.SpawnRover("")
 	assert.NoError(t, err)
 
 	rover, err := world.GetRover(a)
@@ -44,9 +44,9 @@ func TestWorld_GetRover(t *testing.T) {
 
 func TestWorld_DestroyRover(t *testing.T) {
 	world := NewWorld(1)
-	a, err := world.SpawnRover()
+	a, err := world.SpawnRover("")
 	assert.NoError(t, err)
-	b, err := world.SpawnRover()
+	b, err := world.SpawnRover("")
 	assert.NoError(t, err)
 
 	err = world.DestroyRover(a)
@@ -62,7 +62,7 @@ func TestWorld_DestroyRover(t *testing.T) {
 
 func TestWorld_GetSetMovePosition(t *testing.T) {
 	world := NewWorld(4)
-	a, err := world.SpawnRover()
+	a, err := world.SpawnRover("")
 	assert.NoError(t, err)
 
 	pos := maths.Vector{
@@ -97,9 +97,9 @@ func TestWorld_GetSetMovePosition(t *testing.T) {
 func TestWorld_RadarFromRover(t *testing.T) {
 	// Create world that should have visible walls on the radar
 	world := NewWorld(2)
-	a, err := world.SpawnRover()
+	a, err := world.SpawnRover("")
 	assert.NoError(t, err)
-	b, err := world.SpawnRover()
+	b, err := world.SpawnRover("")
 	assert.NoError(t, err)
 
 	// Warp the rovers into position
@@ -128,9 +128,9 @@ func TestWorld_RadarFromRover(t *testing.T) {
 	assert.Equal(t, objs1, objs2)
 }
 
-func TestWorld_RoverStash(t *testing.T) {
+func TestWorld_RoverDamage(t *testing.T) {
 	world := NewWorld(2)
-	a, err := world.SpawnRover()
+	a, err := world.SpawnRover("")
 	assert.NoError(t, err)
 
 	pos := maths.Vector{
@@ -142,78 +142,6 @@ func TestWorld_RoverStash(t *testing.T) {
 	err = world.WarpRover(a, pos)
 	assert.NoError(t, err, "Failed to set position for rover")
 
-	rover, err := world.GetRover(a)
-	assert.NoError(t, err, "Failed to get rover")
-
-	for i := 0; i < rover.Capacity; i++ {
-		// Place an object
-		world.Atlas.SetObject(pos, Object{Type: roveapi.Object_RockSmall})
-
-		// Pick it up
-		o, err := world.RoverStash(a)
-		assert.NoError(t, err, "Failed to stash")
-		assert.Equal(t, roveapi.Object_RockSmall, o, "Failed to get correct object")
-
-		// Check it's gone
-		_, obj := world.Atlas.QueryPosition(pos)
-		assert.Equal(t, roveapi.Object_ObjectUnknown, obj.Type, "Stash failed to remove object from atlas")
-
-		// Check we have it
-		inv, err := world.RoverInventory(a)
-		assert.NoError(t, err, "Failed to get inventory")
-		assert.Equal(t, i+1, len(inv))
-		assert.Equal(t, Object{Type: roveapi.Object_RockSmall}, inv[i])
-
-		// Check that this did reduce the charge
-		info, err := world.GetRover(a)
-		assert.NoError(t, err, "Failed to get rover")
-		assert.Equal(t, info.MaximumCharge-(i+1), info.Charge, "Rover lost charge for stash")
-		assert.Contains(t, info.Logs[len(info.Logs)-1].Text, "stashed", "Rover logs should contain the move")
-	}
-
-	// Recharge the rover
-	for i := 0; i < rover.MaximumCharge; i++ {
-		_, err = world.RoverRecharge(a)
-		assert.NoError(t, err)
-
-	}
-
-	// Place an object
-	world.Atlas.SetObject(pos, Object{Type: roveapi.Object_RockSmall})
-
-	// Try to pick it up
-	o, err := world.RoverStash(a)
-	assert.NoError(t, err, "Failed to stash")
-	assert.Equal(t, roveapi.Object_ObjectUnknown, o, "Failed to get correct object")
-
-	// Check it's still there
-	_, obj := world.Atlas.QueryPosition(pos)
-	assert.Equal(t, roveapi.Object_RockSmall, obj.Type, "Stash failed to remove object from atlas")
-
-	// Check we don't have it
-	inv, err := world.RoverInventory(a)
-	assert.NoError(t, err, "Failed to get inventory")
-	assert.Equal(t, rover.Capacity, len(inv))
-
-	// Check that this didn't reduce the charge
-	info, err := world.GetRover(a)
-	assert.NoError(t, err, "Failed to get rover")
-	assert.Equal(t, info.MaximumCharge, info.Charge, "Rover lost charge for non-stash")
-}
-
-func TestWorld_RoverDamage(t *testing.T) {
-	world := NewWorld(2)
-	a, err := world.SpawnRover()
-	assert.NoError(t, err)
-
-	pos := maths.Vector{
-		X: 0.0,
-		Y: 0.0,
-	}
-
-	err = world.WarpRover(a, pos)
-	assert.NoError(t, err, "Failed to set position for rover")
-
 	info, err := world.GetRover(a)
 	assert.NoError(t, err, "couldn't get rover info")
 
@@ -229,67 +157,10 @@ func TestWorld_RoverDamage(t *testing.T) {
 	assert.Contains(t, newinfo.Logs[len(newinfo.Logs)-1].Text, "collision", "Rover logs should contain the collision")
 }
 
-func TestWorld_RoverRepair(t *testing.T) {
-	world := NewWorld(2)
-	a, err := world.SpawnRover()
-	assert.NoError(t, err)
-
-	pos := maths.Vector{
-		X: 0.0,
-		Y: 0.0,
-	}
-
-	world.Atlas.SetObject(pos, Object{Type: roveapi.Object_ObjectUnknown})
-
-	err = world.WarpRover(a, pos)
-	assert.NoError(t, err, "Failed to set position for rover")
-
-	originalInfo, err := world.GetRover(a)
-	assert.NoError(t, err, "couldn't get rover info")
-
-	// Pick up something to repair with
-	world.Atlas.SetObject(pos, Object{Type: roveapi.Object_RockSmall})
-	o, err := world.RoverStash(a)
-	assert.NoError(t, err, "Failed to stash")
-	assert.Equal(t, roveapi.Object_RockSmall, o, "Failed to get correct object")
-
-	world.Atlas.SetObject(maths.Vector{X: 0.0, Y: 1.0}, Object{Type: roveapi.Object_RockLarge})
-
-	// Try and bump into the rock
-	vec, err := world.TryMoveRover(a, roveapi.Bearing_North)
-	assert.NoError(t, err, "Failed to move rover")
-	assert.Equal(t, pos, vec, "Rover managed to move into large rock")
-
-	newinfo, err := world.GetRover(a)
-	assert.NoError(t, err, "couldn't get rover info")
-	assert.Equal(t, originalInfo.Integrity-1, newinfo.Integrity, "rover should have lost integrity")
-
-	err = world.ExecuteCommand(&roveapi.Command{Command: roveapi.CommandType_repair}, a)
-	assert.NoError(t, err, "Failed to repair rover")
-
-	newinfo, err = world.GetRover(a)
-	assert.NoError(t, err, "couldn't get rover info")
-	assert.Equal(t, originalInfo.Integrity, newinfo.Integrity, "rover should have gained integrity")
-	assert.Contains(t, newinfo.Logs[len(newinfo.Logs)-1].Text, "repair", "Rover logs should contain the repair")
-
-	// Check again that it can't repair past the max
-	world.Atlas.SetObject(pos, Object{Type: roveapi.Object_RockSmall})
-	o, err = world.RoverStash(a)
-	assert.NoError(t, err, "Failed to stash")
-	assert.Equal(t, roveapi.Object_RockSmall, o, "Failed to get correct object")
-
-	err = world.ExecuteCommand(&roveapi.Command{Command: roveapi.CommandType_repair}, a)
-	assert.NoError(t, err, "Failed to repair rover")
-
-	newinfo, err = world.GetRover(a)
-	assert.NoError(t, err, "couldn't get rover info")
-	assert.Equal(t, originalInfo.Integrity, newinfo.Integrity, "rover should have kept the same integrity")
-}
-
 func TestWorld_Daytime(t *testing.T) {
 	world := NewWorld(1)
 
-	a, err := world.SpawnRover()
+	a, err := world.SpawnRover("")
 	assert.NoError(t, err)
 
 	// Remove rover charge
@@ -328,10 +199,10 @@ func TestWorld_Daytime(t *testing.T) {
 func TestWorld_Broadcast(t *testing.T) {
 	world := NewWorld(8)
 
-	a, err := world.SpawnRover()
+	a, err := world.SpawnRover("")
 	assert.NoError(t, err)
 
-	b, err := world.SpawnRover()
+	b, err := world.SpawnRover("")
 	assert.NoError(t, err)
 
 	// Warp rovers near to eachother
@@ -394,7 +265,7 @@ func TestWorld_Sailing(t *testing.T) {
 	world.Tick()                       // One initial tick to set the wind direction the first time
 	world.Wind = roveapi.Bearing_North // Set the wind direction to north
 
-	name, err := world.SpawnRover()
+	name, err := world.SpawnRover("")
 	assert.NoError(t, err)
 
 	// Warp the rover to 0,0 after clearing it

pkg/rove/worldgen.go

@@ -3,6 +3,7 @@ package rove
 import (
 	"encoding/json"
 	"log"
+	"math/rand"
 
 	"github.com/mdiluz/rove/pkg/maths"
 	"github.com/mdiluz/rove/proto/roveapi"
@@ -76,6 +77,12 @@ func (g *NoiseWorldGen) GetObject(v maths.Vector) (obj Object) {
 		// 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")
 

proto/roveapi/roveapi.pb.go

@@ -41,14 +41,18 @@ 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 data
+	// 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
+	// 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
 )
 
 // Enum value maps for CommandType.
@@ -60,6 +64,8 @@ var (
 		3: "stash",
 		4: "repair",
 		5: "broadcast",
+		6: "salvage",
+		7: "transfer",
 	}
 	CommandType_value = map[string]int32{
 		"none":      0,
@@ -68,6 +74,8 @@ var (
 		"stash":     3,
 		"repair":    4,
 		"broadcast": 5,
+		"salvage":   6,
+		"transfer":  7,
 	}
 )
 
@@ -181,6 +189,8 @@ const (
 	Object_RockSmall Object = 3
 	// RockLarge is a large blocking rock
 	Object_RockLarge Object = 4
+	// RoverParts is one unit of rover parts, used for repairing and fixing the rover
+	Object_RoverParts Object = 5
 )
 
 // Enum value maps for Object.
@@ -191,6 +201,7 @@ var (
 		2: "RoverDormant",
 		3: "RockSmall",
 		4: "RockLarge",
+		5: "RoverParts",
 	}
 	Object_value = map[string]int32{
 		"ObjectUnknown": 0,
@@ -198,6 +209,7 @@ var (
 		"RoverDormant":  2,
 		"RockSmall":     3,
 		"RockLarge":     4,
+		"RoverParts":    5,
 	}
 )
 
@@ -624,11 +636,10 @@ type Command struct {
 
 	// The command type
 	Command CommandType `protobuf:"varint,1,opt,name=command,proto3,enum=roveapi.CommandType" json:"command,omitempty"`
-	// A simple message, must be composed of printable ASCII glyphs (32-126)
+	// broadcast - a simple message, must be composed of up to 3 printable ASCII glyphs (32-126)
-	// maximum of three characters
+	Data []byte `protobuf:"bytes,2,opt,name=data,proto3" json:"data,omitempty"`
-	Broadcast []byte `protobuf:"bytes,2,opt,name=broadcast,proto3" json:"broadcast,omitempty"`
+	// move - the bearing for the rover to turn to
-	// The bearing for the rover to turn to
+	Bearing Bearing `protobuf:"varint,3,opt,name=bearing,proto3,enum=roveapi.Bearing" json:"bearing,omitempty"`
-	Turn Bearing `protobuf:"varint,3,opt,name=turn,proto3,enum=roveapi.Bearing" json:"turn,omitempty"`
 }
 
 func (x *Command) Reset() {
@@ -670,16 +681,16 @@ func (x *Command) GetCommand() CommandType {
 	return CommandType_none
 }
 
-func (x *Command) GetBroadcast() []byte {
+func (x *Command) GetData() []byte {
 	if x != nil {
-		return x.Broadcast
+		return x.Data
 	}
 	return nil
 }
 
-func (x *Command) GetTurn() Bearing {
+func (x *Command) GetBearing() Bearing {
 	if x != nil {
-		return x.Turn
+		return x.Bearing
 	}
 	return Bearing_BearingUnknown
 }
@@ -1397,141 +1408,144 @@ var file_roveapi_roveapi_proto_rawDesc = []byte{
 	0x69, 0x73, 0x74, 0x65, 0x72, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x12, 0x2a, 0x0a,
 	0x07, 0x61, 0x63, 0x63, 0x6f, 0x75, 0x6e, 0x74, 0x18, 0x01, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x10,
 	0x2e, 0x72, 0x6f, 0x76, 0x65, 0x61, 0x70, 0x69, 0x2e, 0x41, 0x63, 0x63, 0x6f, 0x75, 0x6e, 0x74,
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+	0x52, 0x07, 0x61, 0x63, 0x63, 0x6f, 0x75, 0x6e, 0x74, 0x22, 0x79, 0x0a, 0x07, 0x43, 0x6f, 0x6d,
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 }
 
 var (
@@ -1575,7 +1589,7 @@ var file_roveapi_roveapi_proto_goTypes = []interface{}{
 var file_roveapi_roveapi_proto_depIdxs = []int32{
 	8,  // 0: roveapi.RegisterResponse.account:type_name -> roveapi.Account
 	0,  // 1: roveapi.Command.command:type_name -> roveapi.CommandType
-	1,  // 2: roveapi.Command.turn:type_name -> roveapi.Bearing
+	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

proto/roveapi/roveapi.proto

@@ -91,14 +91,18 @@ 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 data
+  // 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
+  // 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;
 }
 
 // Bearing represents a compass direction
@@ -120,12 +124,11 @@ message Command {
   // The command type
   CommandType command = 1;
 
-  // A simple message, must be composed of printable ASCII glyphs (32-126)
+  // broadcast - a simple message, must be composed of up to 3 printable ASCII glyphs (32-126)
-  // maximum of three characters
+  bytes data = 2;
-  bytes broadcast = 2;
 
-  // The bearing for the rover to turn to
+  // move - the bearing for the rover to turn to
-  Bearing turn = 3;
+  Bearing bearing = 3;
 }
 
 // CommandRequest describes a set of commands to be requested for the rover
@@ -160,6 +163,9 @@ enum Object {
 
   // RockLarge is a large blocking rock
   RockLarge = 4;
+
+  // RoverParts is one unit of rover parts, used for repairing and fixing the rover
+  RoverParts = 5;
 }
 
 enum Tile {