up3

server/block/dragon_egg.go

@@ -0,0 +1,76 @@
+package block
+
+import (
+	"math/rand/v2"
+
+	"github.com/df-mc/dragonfly/server/block/cube"
+	"github.com/df-mc/dragonfly/server/item"
+	"github.com/df-mc/dragonfly/server/world"
+	"github.com/df-mc/dragonfly/server/world/particle"
+)
+
+// DragonEgg is a decorative block or a "trophy item", and the rarest item in the game.
+type DragonEgg struct {
+	solid
+	transparent
+	gravityAffected
+	sourceWaterDisplacer
+}
+
+// NeighbourUpdateTick ...
+func (d DragonEgg) NeighbourUpdateTick(pos, _ cube.Pos, tx *world.Tx) {
+	d.fall(d, pos, tx)
+}
+
+// SideClosed ...
+func (d DragonEgg) SideClosed(cube.Pos, cube.Pos, *world.Tx) bool {
+	return false
+}
+
+// teleport ...
+func (d DragonEgg) teleport(pos cube.Pos, tx *world.Tx) {
+	for i := 0; i < 1000; i++ {
+		newPos := pos.Add(cube.Pos{rand.IntN(31) - 15, max(tx.Range()[0]-pos.Y(), min(tx.Range()[1]-pos.Y(), rand.IntN(15)-7)), rand.IntN(31) - 15})
+
+		if _, ok := tx.Block(newPos).(Air); ok {
+			tx.SetBlock(newPos, d, nil)
+			tx.SetBlock(pos, nil, nil)
+			tx.AddParticle(pos.Vec3(), particle.DragonEggTeleport{Diff: pos.Sub(newPos)})
+			return
+		}
+	}
+}
+
+// LightEmissionLevel ...
+func (d DragonEgg) LightEmissionLevel() uint8 {
+	return 1
+}
+
+// Punch ...
+func (d DragonEgg) Punch(pos cube.Pos, _ cube.Face, tx *world.Tx, u item.User) {
+	if gm, ok := u.(interface{ GameMode() world.GameMode }); ok && gm.GameMode().CreativeInventory() {
+		return
+	}
+	d.teleport(pos, tx)
+}
+
+// Activate ...
+func (d DragonEgg) Activate(pos cube.Pos, _ cube.Face, tx *world.Tx, _ item.User, _ *item.UseContext) bool {
+	d.teleport(pos, tx)
+	return true
+}
+
+// BreakInfo ...
+func (d DragonEgg) BreakInfo() BreakInfo {
+	return newBreakInfo(3, pickaxeHarvestable, pickaxeEffective, oneOf(d)).withBlastResistance(45)
+}
+
+// EncodeItem ...
+func (DragonEgg) EncodeItem() (name string, meta int16) {
+	return "minecraft:dragon_egg", 0
+}
+
+// EncodeBlock ...
+func (DragonEgg) EncodeBlock() (string, map[string]any) {
+	return "minecraft:dragon_egg", nil
+}