up3

server/block/sugar_cane.go

@@ -0,0 +1,126 @@
+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/go-gl/mathgl/mgl64"
+)
+
+// SugarCane is a plant block that generates naturally near water.
+type SugarCane struct {
+	empty
+	transparent
+
+	// Age is the growth state of sugar cane. Values range from 0 to 15.
+	Age int
+}
+
+// UseOnBlock ensures the placement of the block is OK.
+func (c SugarCane) UseOnBlock(pos cube.Pos, face cube.Face, _ mgl64.Vec3, tx *world.Tx, user item.User, ctx *item.UseContext) (used bool) {
+	pos, _, used = firstReplaceable(tx, pos, face, c)
+	if !used {
+		return false
+	}
+	if !c.canGrowHere(pos, tx, true) {
+		return false
+	}
+
+	place(tx, pos, c, user, ctx)
+	return placed(ctx)
+}
+
+// NeighbourUpdateTick ...
+func (c SugarCane) NeighbourUpdateTick(pos, _ cube.Pos, tx *world.Tx) {
+	if !c.canGrowHere(pos, tx, true) {
+		breakBlock(c, pos, tx)
+	}
+}
+
+// RandomTick ...
+func (c SugarCane) RandomTick(pos cube.Pos, tx *world.Tx, _ *rand.Rand) {
+	if !c.canGrowHere(pos, tx, true) {
+		breakBlock(c, pos, tx)
+		return
+	}
+	if c.Age < 15 {
+		c.Age++
+	} else if c.Age == 15 {
+		c.Age = 0
+		if c.canGrowHere(pos.Side(cube.FaceDown), tx, false) {
+			for y := 1; y < 3; y++ {
+				if _, ok := tx.Block(pos.Add(cube.Pos{0, y})).(Air); ok {
+					tx.SetBlock(pos.Add(cube.Pos{0, y}), SugarCane{}, nil)
+					break
+				} else if _, ok := tx.Block(pos.Add(cube.Pos{0, y})).(SugarCane); !ok {
+					break
+				}
+			}
+		}
+	}
+	tx.SetBlock(pos, c, nil)
+}
+
+// BoneMeal ...
+func (c SugarCane) BoneMeal(pos cube.Pos, tx *world.Tx) item.BoneMealResult {
+	for _, ok := tx.Block(pos.Side(cube.FaceDown)).(SugarCane); ok; _, ok = tx.Block(pos.Side(cube.FaceDown)).(SugarCane) {
+		pos = pos.Side(cube.FaceDown)
+	}
+	if c.canGrowHere(pos.Side(cube.FaceDown), tx, false) {
+		for y := 1; y < 3; y++ {
+			if _, ok := tx.Block(pos.Add(cube.Pos{0, y})).(Air); ok {
+				tx.SetBlock(pos.Add(cube.Pos{0, y}), SugarCane{}, nil)
+			}
+		}
+		return item.BoneMealResultSmall
+	}
+	return item.BoneMealResultNone
+}
+
+// canGrowHere implements logic to check if sugar cane can live/grow here.
+func (c SugarCane) canGrowHere(pos cube.Pos, tx *world.Tx, recursive bool) bool {
+	if _, ok := tx.Block(pos.Side(cube.FaceDown)).(SugarCane); ok && recursive {
+		return c.canGrowHere(pos.Side(cube.FaceDown), tx, recursive)
+	}
+
+	if supportsVegetation(c, tx.Block(pos.Sub(cube.Pos{0, 1}))) {
+		for _, face := range cube.HorizontalFaces() {
+			if liquid, ok := tx.Liquid(pos.Side(face).Side(cube.FaceDown)); ok {
+				if _, ok := liquid.(Water); ok {
+					return true
+				}
+			}
+		}
+	}
+	return false
+}
+
+// HasLiquidDrops ...
+func (c SugarCane) HasLiquidDrops() bool {
+	return true
+}
+
+// BreakInfo ...
+func (c SugarCane) BreakInfo() BreakInfo {
+	return newBreakInfo(0, alwaysHarvestable, nothingEffective, oneOf(c))
+}
+
+// EncodeItem ...
+func (c SugarCane) EncodeItem() (name string, meta int16) {
+	return "minecraft:sugar_cane", 0
+}
+
+// EncodeBlock ...
+func (c SugarCane) EncodeBlock() (name string, properties map[string]any) {
+	return "minecraft:reeds", map[string]any{"age": int32(c.Age)}
+}
+
+// allSugarCane returns all possible states of a sugar cane block.
+func allSugarCane() (b []world.Block) {
+	for i := 0; i < 16; i++ {
+		b = append(b, SugarCane{Age: i})
+	}
+	return
+}