-
Notifications
You must be signed in to change notification settings - Fork 150
/
player.go
626 lines (571 loc) · 18.7 KB
/
player.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
package session
import (
"encoding/json"
"fmt"
"github.com/df-mc/dragonfly/server/block"
"github.com/df-mc/dragonfly/server/block/cube"
"github.com/df-mc/dragonfly/server/entity"
"github.com/df-mc/dragonfly/server/entity/effect"
"github.com/df-mc/dragonfly/server/internal/nbtconv"
"github.com/df-mc/dragonfly/server/item"
"github.com/df-mc/dragonfly/server/item/creative"
"github.com/df-mc/dragonfly/server/item/inventory"
"github.com/df-mc/dragonfly/server/player/form"
"github.com/df-mc/dragonfly/server/player/skin"
"github.com/df-mc/dragonfly/server/world"
"github.com/go-gl/mathgl/mgl64"
"github.com/google/uuid"
"github.com/sandertv/gophertunnel/minecraft/protocol"
"github.com/sandertv/gophertunnel/minecraft/protocol/packet"
"go.uber.org/atomic"
"math"
"net"
"time"
_ "unsafe" // Imported for compiler directives.
)
// closeCurrentContainer closes the container the player might currently have open.
func (s *Session) closeCurrentContainer() {
if !s.containerOpened.Load() {
return
}
s.closeWindow()
pos := s.openedPos.Load().(cube.Pos)
if container, ok := s.c.World().Block(pos).(block.Container); ok {
container.RemoveViewer(s, s.c.World(), pos)
}
}
// SendRespawn spawns the controllable of the session client-side in the world, provided it is has died.
func (s *Session) SendRespawn() {
s.writePacket(&packet.Respawn{
Position: vec64To32(s.c.Position().Add(entityOffset(s.c))),
State: packet.RespawnStateReadyToSpawn,
EntityRuntimeID: selfEntityRuntimeID,
})
}
// sendInv sends the inventory passed to the client with the window ID.
func (s *Session) sendInv(inv *inventory.Inventory, windowID uint32) {
pk := &packet.InventoryContent{
WindowID: windowID,
Content: make([]protocol.ItemInstance, 0, s.inv.Size()),
}
for _, i := range inv.Items() {
pk.Content = append(pk.Content, instanceFromItem(i))
}
s.writePacket(pk)
}
const (
containerArmour = 6
containerChest = 7
containerBeacon = 8
containerFullInventory = 12
containerCraftingGrid = 13
containerHotbar = 27
containerInventory = 28
containerOffHand = 33
containerBarrel = 57
containerCursor = 58
containerCreativeOutput = 59
)
// invByID attempts to return an inventory by the ID passed. If found, the inventory is returned and the bool
// returned is true.
func (s *Session) invByID(id int32) (*inventory.Inventory, bool) {
switch id {
case containerCraftingGrid, containerCreativeOutput, containerCursor:
// UI inventory.
return s.ui, true
case containerHotbar, containerInventory, containerFullInventory:
// Hotbar 'inventory', rest of inventory, inventory when container is opened.
return s.inv, true
case containerOffHand:
return s.offHand, true
case containerArmour:
// Armour inventory.
return s.armour.Inv(), true
case containerChest:
// Chests, potentially other containers too.
if s.containerOpened.Load() {
b := s.c.World().Block(s.openedPos.Load().(cube.Pos))
if _, chest := b.(block.Chest); chest {
return s.openedWindow.Load().(*inventory.Inventory), true
}
}
case containerBarrel:
if s.containerOpened.Load() {
b := s.c.World().Block(s.openedPos.Load().(cube.Pos))
if _, barrel := b.(block.Barrel); barrel {
return s.openedWindow.Load().(*inventory.Inventory), true
}
}
case containerBeacon:
if s.containerOpened.Load() {
b := s.c.World().Block(s.openedPos.Load().(cube.Pos))
if _, beacon := b.(block.Beacon); beacon {
return s.ui, true
}
}
}
return nil, false
}
// Disconnect disconnects the client and ultimately closes the session. If the message passed is non-empty,
// it will be shown to the client.
func (s *Session) Disconnect(message string) {
if s != Nop {
s.writePacket(&packet.Disconnect{
HideDisconnectionScreen: message == "",
Message: message,
})
_ = s.conn.Flush()
}
}
// SendSpeed sends the speed of the player in an UpdateAttributes packet, so that it is updated client-side.
func (s *Session) SendSpeed(speed float64) {
s.writePacket(&packet.UpdateAttributes{
EntityRuntimeID: selfEntityRuntimeID,
Attributes: []protocol.Attribute{{
Name: "minecraft:movement",
Value: float32(speed),
Max: math.MaxFloat32,
Min: 0,
Default: 0.1,
}},
})
}
// SendCameraShake sends a shake amount for the players camera
func (s *Session) SendCameraShake(Intensity, Duration float32, Type CameraShakeType) {
s.writePacket(&packet.CameraShake{
Duration: Duration,
Intensity: Intensity,
Type: uint8(Type),
})
}
// SendFood ...
func (s *Session) SendFood(food int, saturation, exhaustion float64) {
s.writePacket(&packet.UpdateAttributes{
EntityRuntimeID: selfEntityRuntimeID,
Attributes: []protocol.Attribute{
{
Name: "minecraft:player.hunger",
Value: float32(food),
Max: 20, Min: 0, Default: 20,
},
{
Name: "minecraft:player.saturation",
Value: float32(saturation),
Max: 20, Min: 0, Default: 20,
},
{
Name: "minecraft:player.exhaustion",
Value: float32(exhaustion),
Max: 5, Min: 0, Default: 0,
},
},
})
}
// SendVelocity sends the velocity of the player to the client.
func (s *Session) SendVelocity(velocity mgl64.Vec3) {
s.writePacket(&packet.SetActorMotion{
EntityRuntimeID: selfEntityRuntimeID,
Velocity: vec64To32(velocity),
})
}
// SendForm sends a form to the client of the connection. The Submit method of the form is called when the
// client submits the form.
func (s *Session) SendForm(f form.Form) {
b, _ := json.Marshal(f)
h := s.handlers[packet.IDModalFormResponse].(*ModalFormResponseHandler)
id := h.currentID.Add(1)
h.mu.Lock()
if len(h.forms) > 10 {
s.log.Debugf("SendForm %v: more than 10 active forms: dropping an existing one.", s.c.Name())
for k := range h.forms {
delete(h.forms, k)
break
}
}
h.forms[id] = f
h.mu.Unlock()
s.writePacket(&packet.ModalFormRequest{
FormID: id,
FormData: b,
})
}
// Transfer transfers the player to a server with the IP and port passed.
func (s *Session) Transfer(ip net.IP, port int) {
s.writePacket(&packet.Transfer{
Address: ip.String(),
Port: uint16(port),
})
}
// SendGameMode sends the game mode of the Controllable of the session to the client. It makes sure the right
// flags are set to create the full game mode.
func (s *Session) SendGameMode(mode world.GameMode) {
flags, id := uint32(0), int32(packet.GameTypeSurvival)
if mode.AllowsFlying() {
flags |= packet.AdventureFlagAllowFlight
}
if !mode.HasCollision() {
flags |= packet.AdventureFlagNoClip
}
if !mode.AllowsEditing() {
flags |= packet.AdventureFlagWorldImmutable
}
if !mode.AllowsInteraction() {
flags |= packet.AdventureFlagNoPVP
}
if !mode.Visible() {
flags |= packet.AdventureFlagMuted
}
// Find a game type that matches the game mode most closely. We assign some properties to specifically creative
// mode or spectator mode and assign game type based on those.
crea := mode.AllowsFlying() && mode.CreativeInventory()
spec := !mode.AllowsEditing() && !mode.AllowsInteraction()
switch {
case crea && !spec:
id = packet.GameTypeCreative
case crea && spec:
id = packet.GameTypeCreativeSpectator
case !crea && spec:
id = packet.GameTypeSurvivalSpectator
case !crea && mode.AllowsInteraction() && !mode.AllowsEditing():
id = packet.GameTypeAdventure
default:
id = packet.GameTypeSurvival
}
s.writePacket(&packet.AdventureSettings{
Flags: flags,
PermissionLevel: packet.PermissionLevelMember,
PlayerUniqueID: 1,
ActionPermissions: uint32(packet.ActionPermissionBuild | packet.ActionPermissionMine | packet.ActionPermissionDoorsAndSwitched | packet.ActionPermissionOpenContainers | packet.ActionPermissionAttackPlayers | packet.ActionPermissionAttackMobs),
})
s.writePacket(&packet.SetPlayerGameType{GameType: id})
}
// SendHealth sends the health and max health to the player.
func (s *Session) SendHealth(health *entity.HealthManager) {
s.writePacket(&packet.UpdateAttributes{
EntityRuntimeID: selfEntityRuntimeID,
Attributes: []protocol.Attribute{{
Name: "minecraft:health",
Value: float32(math.Ceil(health.Health())),
Max: float32(math.Ceil(health.MaxHealth())),
Default: 20,
}},
})
}
// SendAbsorption sends the absorption value passed to the player.
func (s *Session) SendAbsorption(value float64) {
max := value
if math.Mod(value, 2) != 0 {
max = value + 1
}
s.writePacket(&packet.UpdateAttributes{
EntityRuntimeID: selfEntityRuntimeID,
Attributes: []protocol.Attribute{{
Name: "minecraft:absorption",
Value: float32(math.Ceil(value)),
Max: float32(math.Ceil(max)),
}},
})
}
// SendEffect sends an effects passed to the player.
func (s *Session) SendEffect(e effect.Effect) {
s.SendEffectRemoval(e)
id, _ := effect.ID(e)
s.writePacket(&packet.MobEffect{
EntityRuntimeID: selfEntityRuntimeID,
Operation: packet.MobEffectAdd,
EffectType: int32(id),
Amplifier: int32(e.Level() - 1),
Particles: e.ShowParticles(),
Duration: int32(e.Duration() / (time.Second / 20)),
})
}
// SendEffectRemoval sends the removal of an effect passed.
func (s *Session) SendEffectRemoval(e effect.Effect) {
id, ok := effect.ID(e)
if !ok {
panic(fmt.Sprintf("unregistered effect type %T", e))
}
s.writePacket(&packet.MobEffect{
EntityRuntimeID: selfEntityRuntimeID,
Operation: packet.MobEffectRemove,
EffectType: int32(id),
})
}
// SendGameRules sends all the provided game rules to the player. Once sent, they will be immediately updated
// on the client if they are valid.
func (s *Session) sendGameRules(gameRules []protocol.GameRule) {
s.writePacket(&packet.GameRulesChanged{GameRules: gameRules})
}
// EnableCoordinates will either enable or disable coordinates for the player depending on the value given.
func (s *Session) EnableCoordinates(enable bool) {
//noinspection SpellCheckingInspection
s.sendGameRules([]protocol.GameRule{{Name: "showcoordinates", Value: enable}})
}
// addToPlayerList adds the player of a session to the player list of this session. It will be shown in the
// in-game pause menu screen.
func (s *Session) addToPlayerList(session *Session) {
c := session.c
s.entityMutex.Lock()
runtimeID := uint64(1)
if session != s {
runtimeID = s.currentEntityRuntimeID.Add(1)
}
s.entityRuntimeIDs[c] = runtimeID
s.entities[runtimeID] = c
s.entityMutex.Unlock()
s.writePacket(&packet.PlayerList{
ActionType: packet.PlayerListActionAdd,
Entries: []protocol.PlayerListEntry{{
UUID: c.UUID(),
EntityUniqueID: int64(runtimeID),
Username: c.Name(),
XUID: c.XUID(),
Skin: skinToProtocol(c.Skin()),
}},
})
}
// skinToProtocol converts a skin to its protocol representation.
func skinToProtocol(s skin.Skin) protocol.Skin {
var animations []protocol.SkinAnimation
for _, animation := range s.Animations {
protocolAnim := protocol.SkinAnimation{
ImageWidth: uint32(animation.Bounds().Max.X),
ImageHeight: uint32(animation.Bounds().Max.Y),
ImageData: animation.Pix,
FrameCount: float32(animation.FrameCount),
}
switch animation.Type() {
case skin.AnimationHead:
protocolAnim.AnimationType = protocol.SkinAnimationHead
case skin.AnimationBody32x32:
protocolAnim.AnimationType = protocol.SkinAnimationBody32x32
case skin.AnimationBody128x128:
protocolAnim.AnimationType = protocol.SkinAnimationBody128x128
}
protocolAnim.ExpressionType = uint32(animation.AnimationExpression)
animations = append(animations, protocolAnim)
}
return protocol.Skin{
PlayFabID: s.PlayFabID,
SkinID: uuid.New().String(),
SkinResourcePatch: s.ModelConfig.Encode(),
SkinImageWidth: uint32(s.Bounds().Max.X),
SkinImageHeight: uint32(s.Bounds().Max.Y),
SkinData: s.Pix,
CapeImageWidth: uint32(s.Cape.Bounds().Max.X),
CapeImageHeight: uint32(s.Cape.Bounds().Max.Y),
CapeData: s.Cape.Pix,
SkinGeometry: s.Model,
PersonaSkin: s.Persona,
CapeID: uuid.New().String(),
FullSkinID: uuid.New().String(),
Animations: animations,
Trusted: true,
}
}
// removeFromPlayerList removes the player of a session from the player list of this session. It will no
// longer be shown in the in-game pause menu screen.
func (s *Session) removeFromPlayerList(session *Session) {
c := session.c
s.entityMutex.Lock()
delete(s.entities, s.entityRuntimeIDs[c])
delete(s.entityRuntimeIDs, c)
s.entityMutex.Unlock()
s.writePacket(&packet.PlayerList{
ActionType: packet.PlayerListActionRemove,
Entries: []protocol.PlayerListEntry{{
UUID: c.UUID(),
}},
})
}
// HandleInventories starts handling the inventories of the Controllable of the session. It sends packets when
// slots in the inventory are changed.
func (s *Session) HandleInventories() (inv, offHand *inventory.Inventory, armour *inventory.Armour, heldSlot *atomic.Uint32) {
s.inv = inventory.New(36, func(slot int, item item.Stack) {
if s.c == nil {
return
}
if slot == int(s.heldSlot.Load()) {
for _, viewer := range s.c.World().Viewers(s.c.Position()) {
viewer.ViewEntityItems(s.c)
}
}
if !s.inTransaction.Load() {
s.writePacket(&packet.InventorySlot{
WindowID: protocol.WindowIDInventory,
Slot: uint32(slot),
NewItem: instanceFromItem(item),
})
}
})
s.offHand = inventory.New(2, func(slot int, item item.Stack) {
if s.c == nil {
return
}
for _, viewer := range s.c.World().Viewers(s.c.Position()) {
viewer.ViewEntityItems(s.c)
}
if !s.inTransaction.Load() {
i, _ := s.offHand.Item(1)
s.writePacket(&packet.InventoryContent{
WindowID: protocol.WindowIDOffHand,
Content: []protocol.ItemInstance{
instanceFromItem(i),
},
})
}
})
s.armour = inventory.NewArmour(func(slot int, item item.Stack) {
if s.c == nil {
return
}
for _, viewer := range s.c.World().Viewers(s.c.Position()) {
viewer.ViewEntityArmour(s.c)
}
if !s.inTransaction.Load() {
s.writePacket(&packet.InventorySlot{
WindowID: protocol.WindowIDArmour,
Slot: uint32(slot),
NewItem: instanceFromItem(item),
})
}
})
return s.inv, s.offHand, s.armour, s.heldSlot
}
// SetHeldSlot sets the currently held hotbar slot.
func (s *Session) SetHeldSlot(slot int) error {
if slot > 8 {
return fmt.Errorf("slot exceeds hotbar range 0-8: slot is %v", slot)
}
s.heldSlot.Store(uint32(slot))
for _, viewer := range s.c.World().Viewers(s.c.Position()) {
viewer.ViewEntityItems(s.c)
}
mainHand, _ := s.c.HeldItems()
s.writePacket(&packet.MobEquipment{
EntityRuntimeID: selfEntityRuntimeID,
NewItem: instanceFromItem(mainHand),
InventorySlot: byte(slot),
HotBarSlot: byte(slot),
})
return nil
}
// stackFromItem converts an item.Stack to its network ItemStack representation.
func stackFromItem(it item.Stack) protocol.ItemStack {
if it.Empty() {
return protocol.ItemStack{}
}
var blockRuntimeID uint32
if b, ok := it.Item().(world.Block); ok {
blockRuntimeID, ok = world.BlockRuntimeID(b)
if !ok {
panic("should never happen")
}
}
rid, meta, _ := world.ItemRuntimeID(it.Item())
return protocol.ItemStack{
ItemType: protocol.ItemType{
NetworkID: rid,
MetadataValue: uint32(meta),
},
BlockRuntimeID: int32(blockRuntimeID),
HasNetworkID: true,
Count: uint16(it.Count()),
NBTData: nbtconv.ItemToNBT(it, true),
}
}
// instanceFromItem converts an item.Stack to its network ItemInstance representation.
func instanceFromItem(it item.Stack) protocol.ItemInstance {
return protocol.ItemInstance{
StackNetworkID: item_id(it),
Stack: stackFromItem(it),
}
}
// stackToItem converts a network ItemStack representation back to an item.Stack.
func stackToItem(it protocol.ItemStack) item.Stack {
var t world.Item
var ok bool
if it.BlockRuntimeID != 0 {
var b world.Block
// It shouldn't matter if it (for whatever reason) wasn't able to get the block runtime ID,
// since on the next line, we assert that the block is an item. If it didn't succeed, it'll
// return air anyways.
b, _ = world.BlockByRuntimeID(uint32(it.BlockRuntimeID))
if t, ok = b.(world.Item); !ok {
t = block.Air{}
}
} else {
t, ok = world.ItemByRuntimeID(it.NetworkID, int16(it.MetadataValue))
if !ok {
t = block.Air{}
}
}
//noinspection SpellCheckingInspection
if nbter, ok := t.(world.NBTer); ok && len(it.NBTData) != 0 {
t = nbter.DecodeNBT(it.NBTData).(world.Item)
}
s := item.NewStack(t, int(it.Count))
return nbtconv.ItemFromNBT(it.NBTData, &s)
}
// creativeItems returns all creative inventory items as protocol item stacks.
func creativeItems() []protocol.CreativeItem {
it := make([]protocol.CreativeItem, 0, len(creative.Items()))
for index, i := range creative.Items() {
v := stackFromItem(i)
delete(v.NBTData, "Damage")
it = append(it, protocol.CreativeItem{
CreativeItemNetworkID: uint32(index) + 1,
Item: v,
})
}
return it
}
// protocolToSkin converts protocol.Skin to skin.Skin.
func protocolToSkin(sk protocol.Skin) (s skin.Skin, err error) {
if sk.SkinID == "" {
return skin.Skin{}, fmt.Errorf("SkinID must not be an empty string")
}
s = skin.New(int(sk.SkinImageWidth), int(sk.SkinImageHeight))
s.Persona = sk.PersonaSkin
s.Pix = sk.SkinData
s.Model = sk.SkinGeometry
s.PlayFabID = sk.PlayFabID
s.Cape = skin.NewCape(int(sk.CapeImageWidth), int(sk.CapeImageHeight))
s.Cape.Pix = sk.CapeData
m := make(map[string]interface{})
if err = json.Unmarshal(sk.SkinGeometry, &m); err != nil {
return skin.Skin{}, fmt.Errorf("SkinGeometry was not a valid JSON string: %v", err)
}
if s.ModelConfig, err = skin.DecodeModelConfig(sk.SkinResourcePatch); err != nil {
return skin.Skin{}, fmt.Errorf("SkinResourcePatch was not a valid JSON string: %v", err)
}
for _, anim := range sk.Animations {
var t skin.AnimationType
switch anim.AnimationType {
case protocol.SkinAnimationHead:
t = skin.AnimationHead
case protocol.SkinAnimationBody32x32:
t = skin.AnimationBody32x32
case protocol.SkinAnimationBody128x128:
t = skin.AnimationBody128x128
default:
return skin.Skin{}, fmt.Errorf("invalid animation type: %v", anim.AnimationType)
}
animation := skin.NewAnimation(int(anim.ImageWidth), int(anim.ImageHeight), int(anim.ExpressionType), t)
animation.FrameCount = int(anim.FrameCount)
animation.Pix = anim.ImageData
s.Animations = append(s.Animations, animation)
}
return
}
// CameraShakeType is the type of camera shake that the player receives
type CameraShakeType uint8
const (
CameraShakePositional = iota
CameraShakeRotational
)
// The following functions use the go:linkname directive in order to make sure the item.byID and item.toID
// functions do not need to be exported.
//go:linkname item_id github.com/df-mc/dragonfly/server/item.id
//noinspection ALL
func item_id(s item.Stack) int32