make certain blocks PistonImmovable

server/block/barrier.go

@@ -17,6 +17,11 @@ func (Barrier) SideClosed(cube.Pos, cube.Pos, *world.Tx) bool {
 	return false
 }
 
+// PistonImmovable ...
+func (Barrier) PistonImmovable() bool {
+	return true
+}
+
 // EncodeItem ...
 func (Barrier) EncodeItem() (name string, meta int16) {
 	return "minecraft:barrier", 0

server/block/beacon.go

@@ -89,6 +89,11 @@ func (b Beacon) Level() int {
 	return b.level
 }
 
+// PistonImmovable ...
+func (Beacon) PistonImmovable() bool {
+	return true
+}
+
 // Tick recalculates level, recalculates the active state of the beacon, and powers players,
 // once every 80 ticks (4 seconds).
 func (b Beacon) Tick(currentTick int64, pos cube.Pos, tx *world.Tx) {

server/block/bedrock.go

@@ -20,3 +20,8 @@ func (b Bedrock) EncodeBlock() (name string, properties map[string]any) {
 	//noinspection SpellCheckingInspection
 	return "minecraft:bedrock", map[string]any{"infiniburn_bit": b.InfiniteBurning}
 }
+
+// PistonImmovable ...
+func (Bedrock) PistonImmovable() bool {
+	return true
+}

server/block/enchanting_table.go

@@ -35,6 +35,11 @@ func (EnchantingTable) LightEmissionLevel() uint8 {
 	return 7
 }
 
+// PistonImmovable ...
+func (EnchantingTable) PistonImmovable() bool {
+	return true
+}
+
 // Activate ...
 func (EnchantingTable) Activate(pos cube.Pos, _ cube.Face, tx *world.Tx, u item.User, _ *item.UseContext) bool {
 	if opener, ok := u.(ContainerOpener); ok {

server/block/ender_chest.go

@@ -45,6 +45,11 @@ func (c EnderChest) LightEmissionLevel() uint8 {
 	return 7
 }
 
+// PistonImmovable ...
+func (EnderChest) PistonImmovable() bool {
+	return true
+}
+
 // SideClosed ...
 func (EnderChest) SideClosed(cube.Pos, cube.Pos, *world.Tx) bool {
 	return false

server/block/invisible_bedrock.go

@@ -7,6 +7,11 @@ type InvisibleBedrock struct {
 	solid
 }
 
+// PistonImmovable ...
+func (InvisibleBedrock) PistonImmovable() bool {
+	return true
+}
+
 // EncodeItem ...
 func (InvisibleBedrock) EncodeItem() (name string, meta int16) {
 	return "minecraft:invisible_bedrock", 0