307 lines
8.3 KiB
Go
307 lines
8.3 KiB
Go
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package session
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import (
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"math"
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"time"
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"github.com/df-mc/dragonfly/server/block/cube"
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"github.com/df-mc/dragonfly/server/entity"
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"github.com/df-mc/dragonfly/server/entity/effect"
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"github.com/df-mc/dragonfly/server/internal/nbtconv"
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"github.com/df-mc/dragonfly/server/item"
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"github.com/df-mc/dragonfly/server/item/potion"
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"github.com/df-mc/dragonfly/server/world"
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"github.com/go-gl/mathgl/mgl64"
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"github.com/google/uuid"
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"github.com/sandertv/gophertunnel/minecraft/protocol"
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)
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// parseEntityMetadata returns an entity metadata object with default values. It is equivalent to setting
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// all properties to their default values and disabling all flags.
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func (s *Session) parseEntityMetadata(e world.Entity) protocol.EntityMetadata {
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bb := e.H().Type().BBox(e)
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m := protocol.NewEntityMetadata()
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m[protocol.EntityDataKeyWidth] = float32(bb.Width())
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m[protocol.EntityDataKeyHeight] = float32(bb.Height())
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m[protocol.EntityDataKeyEffectColor] = int32(0)
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m[protocol.EntityDataKeyEffectAmbience] = byte(0)
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m[protocol.EntityDataKeyColorIndex] = byte(0)
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m.SetFlag(protocol.EntityDataKeyFlags, protocol.EntityDataFlagHasGravity)
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m.SetFlag(protocol.EntityDataKeyFlags, protocol.EntityDataFlagClimb)
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if g, ok := e.H().Type().(glint); ok && g.Glint() {
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m.SetFlag(protocol.EntityDataKeyFlags, protocol.EntityDataFlagEnchanted)
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}
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if e.H().Type() == entity.LingeringPotionType {
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m.SetFlag(protocol.EntityDataKeyFlags, protocol.EntityDataFlagLingering)
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}
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s.addSpecificMetadata(e, m)
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if ent, ok := e.(*entity.Ent); ok {
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s.addSpecificMetadata(ent.Behaviour(), m)
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}
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return m
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}
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func (s *Session) addSpecificMetadata(e any, m protocol.EntityMetadata) {
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if sn, ok := e.(sneaker); ok && sn.Sneaking() {
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m.SetFlag(protocol.EntityDataKeyFlags, protocol.EntityDataFlagSneaking)
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}
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if sp, ok := e.(sprinter); ok && sp.Sprinting() {
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m.SetFlag(protocol.EntityDataKeyFlags, protocol.EntityDataFlagSprinting)
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}
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if sw, ok := e.(swimmer); ok && sw.Swimming() {
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m.SetFlag(protocol.EntityDataKeyFlags, protocol.EntityDataFlagSwimming)
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}
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if cr, ok := e.(crawler); ok && cr.Crawling() {
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m.SetFlag(protocol.EntityDataKeyFlagsTwo, protocol.EntityDataFlagCrawling&63)
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}
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if gl, ok := e.(glider); ok && gl.Gliding() {
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m.SetFlag(protocol.EntityDataKeyFlags, protocol.EntityDataFlagGliding)
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}
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if bb, ok := e.(baby); ok && bb.Baby() {
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m.SetFlag(protocol.EntityDataKeyFlags, protocol.EntityDataFlagBaby)
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}
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if b, ok := e.(breather); ok {
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m[protocol.EntityDataKeyAirSupply] = int16(b.AirSupply().Milliseconds() / 50)
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m[protocol.EntityDataKeyAirSupplyMax] = int16(b.MaxAirSupply().Milliseconds() / 50)
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if b.Breathing() {
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m.SetFlag(protocol.EntityDataKeyFlags, protocol.EntityDataFlagBreathing)
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}
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}
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if i, ok := e.(invisible); ok && i.Invisible() {
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m.SetFlag(protocol.EntityDataKeyFlags, protocol.EntityDataFlagInvisible)
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}
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if i, ok := e.(immobile); ok && i.Immobile() {
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m.SetFlag(protocol.EntityDataKeyFlags, protocol.EntityDataFlagNoAI)
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}
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if o, ok := e.(onFire); ok && o.OnFireDuration() > 0 {
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m.SetFlag(protocol.EntityDataKeyFlags, protocol.EntityDataFlagOnFire)
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}
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if u, ok := e.(using); ok && u.UsingItem() {
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m.SetFlag(protocol.EntityDataKeyFlags, protocol.EntityDataFlagUsingItem)
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}
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if c, ok := e.(arrow); ok && c.Critical() {
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m.SetFlag(protocol.EntityDataKeyFlags, protocol.EntityDataFlagCritical)
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}
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if g, ok := e.(gameMode); ok {
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if g.GameMode().HasCollision() {
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m.SetFlag(protocol.EntityDataKeyFlags, protocol.EntityDataFlagHasCollision)
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}
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}
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if o, ok := e.(orb); ok {
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m[protocol.EntityDataKeyValue] = int32(o.Experience())
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}
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if f, ok := e.(firework); ok {
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m[protocol.EntityDataKeyDisplayTileRuntimeID] = nbtconv.WriteItem(item.NewStack(f.Firework(), 1), false)
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if o, ok := e.(owned); ok && f.Attached() && o.Owner() != nil {
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m[protocol.EntityDataKeyCustomDisplay] = int64(s.handleRuntimeID(o.Owner()))
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}
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} else if o, ok := e.(owned); ok && o.Owner() != nil {
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m[protocol.EntityDataKeyOwner] = int64(s.handleRuntimeID(o.Owner()))
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}
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if sc, ok := e.(scaled); ok {
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m[protocol.EntityDataKeyScale] = float32(sc.Scale())
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}
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if t, ok := e.(tnt); ok {
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m[protocol.EntityDataKeyFuseTime] = int32(t.Fuse().Milliseconds() / 50)
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m.SetFlag(protocol.EntityDataKeyFlags, protocol.EntityDataFlagIgnited)
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}
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if n, ok := e.(named); ok {
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name := n.NameTag()
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m[protocol.EntityDataKeyName] = name
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if name == "" {
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m[protocol.EntityDataKeyAlwaysShowNameTag] = uint8(0)
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m.UnsetFlag(protocol.EntityDataKeyFlags, protocol.EntityDataFlagAlwaysShowName)
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m.UnsetFlag(protocol.EntityDataKeyFlags, protocol.EntityDataFlagShowName)
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} else {
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m[protocol.EntityDataKeyAlwaysShowNameTag] = uint8(1)
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m.SetFlag(protocol.EntityDataKeyFlags, protocol.EntityDataFlagAlwaysShowName)
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m.SetFlag(protocol.EntityDataKeyFlags, protocol.EntityDataFlagShowName)
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}
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}
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if sc, ok := e.(scoreTag); ok {
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m[protocol.EntityDataKeyScore] = sc.ScoreTag()
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}
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if sl, ok := e.(sleeper); ok {
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if pos, ok := sl.Sleeping(); ok {
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m[protocol.EntityDataKeyBedPosition] = protocol.BlockPos{int32(pos[0]), int32(pos[1]), int32(pos[2])}
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// For some reason there is no such flag in gophertunnel.
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m.SetFlag(protocol.EntityDataKeyPlayerFlags, 1)
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}
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}
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if c, ok := e.(areaEffectCloud); ok {
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m[protocol.EntityDataKeyDataRadius] = float32(c.Radius())
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// We purposely fill these in with invalid values to disable the client-sided shrinking of the cloud.
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m[protocol.EntityDataKeyDataDuration] = int32(math.MaxInt32)
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m[protocol.EntityDataKeyDataChangeOnPickup] = float32(math.SmallestNonzeroFloat32)
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m[protocol.EntityDataKeyDataChangeRate] = float32(math.SmallestNonzeroFloat32)
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colour, am := effect.ResultingColour(c.Effects())
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m[protocol.EntityDataKeyEffectColor] = nbtconv.Int32FromRGBA(colour)
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if am {
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m[protocol.EntityDataKeyEffectAmbience] = byte(1)
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} else {
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m[protocol.EntityDataKeyEffectAmbience] = byte(0)
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}
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}
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if l, ok := e.(living); ok && s.ent != nil && s.ent.UUID() == l.UUID() {
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deathPos, deathDimension, died := l.DeathPosition()
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if died {
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dim, _ := world.DimensionID(deathDimension)
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m[protocol.EntityDataKeyPlayerLastDeathPosition] = vec64To32(deathPos)
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m[protocol.EntityDataKeyPlayerLastDeathDimension] = int32(dim)
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}
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m[protocol.EntityDataKeyPlayerHasDied] = boolByte(died)
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}
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if p, ok := e.(splash); ok {
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m[protocol.EntityDataKeyAuxValueData] = int16(p.Potion().Uint8())
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if tip := p.Potion().Uint8(); tip > 4 {
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m[protocol.EntityDataKeyCustomDisplay] = tip + 1
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}
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}
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if eff, ok := e.(effectBearer); ok {
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var packedEffects int64
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for _, ef := range eff.Effects() {
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if !ef.ParticlesHidden() {
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id, found := effect.ID(ef.Type())
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if !found {
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continue
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}
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packedEffects = (packedEffects << 7) | int64(id<<1)
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if ef.Ambient() {
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packedEffects |= 1
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}
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}
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}
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m[protocol.EntityDataKeyVisibleMobEffects] = packedEffects
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}
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if v, ok := e.(variable); ok {
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m[protocol.EntityDataKeyVariant] = v.Variant()
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}
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if mv, ok := e.(markVariable); ok {
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m[protocol.EntityDataKeyMarkVariant] = mv.MarkVariant()
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}
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}
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type sneaker interface {
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Sneaking() bool
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}
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type sprinter interface {
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Sprinting() bool
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}
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type swimmer interface {
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Swimming() bool
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}
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type crawler interface {
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Crawling() bool
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}
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type glider interface {
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Gliding() bool
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}
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type baby interface {
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Baby() bool
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}
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type breather interface {
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Breathing() bool
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AirSupply() time.Duration
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MaxAirSupply() time.Duration
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}
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type immobile interface {
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Immobile() bool
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}
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type invisible interface {
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Invisible() bool
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}
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type scaled interface {
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Scale() float64
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}
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type owned interface {
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Owner() *world.EntityHandle
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}
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type named interface {
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NameTag() string
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}
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type scoreTag interface {
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ScoreTag() string
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}
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type splash interface {
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Potion() potion.Potion
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}
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type glint interface {
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Glint() bool
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}
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type areaEffectCloud interface {
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effectBearer
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Radius() float64
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}
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type onFire interface {
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OnFireDuration() time.Duration
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}
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type effectBearer interface {
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Effects() []effect.Effect
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}
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type using interface {
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UsingItem() bool
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}
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type arrow interface {
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Critical() bool
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}
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type orb interface {
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Experience() int
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}
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type firework interface {
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Firework() item.Firework
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Attached() bool
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}
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type gameMode interface {
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GameMode() world.GameMode
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}
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type sleeper interface {
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Sleeping() (cube.Pos, bool)
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}
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type tnt interface {
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Fuse() time.Duration
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}
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type living interface {
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UUID() uuid.UUID
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DeathPosition() (mgl64.Vec3, world.Dimension, bool)
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}
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type variable interface {
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Variant() int32
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}
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type markVariable interface {
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MarkVariant() int32
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}
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