up3

server/block/melon_seeds.go

@@ -0,0 +1,118 @@
+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"
+)
+
+// MelonSeeds grow melon blocks.
+type MelonSeeds struct {
+	crop
+
+	// direction is the direction from the stem to the melon.
+	Direction cube.Face
+}
+
+// SameCrop ...
+func (MelonSeeds) SameCrop(c Crop) bool {
+	_, ok := c.(MelonSeeds)
+	return ok
+}
+
+// NeighbourUpdateTick ...
+func (m MelonSeeds) NeighbourUpdateTick(pos, _ cube.Pos, tx *world.Tx) {
+	if _, ok := tx.Block(pos.Side(cube.FaceDown)).(Farmland); !ok {
+		breakBlock(m, pos, tx)
+	} else if m.Direction != cube.FaceDown {
+		if _, ok := tx.Block(pos.Side(m.Direction)).(Melon); !ok {
+			m.Direction = cube.FaceDown
+			tx.SetBlock(pos, m, nil)
+		}
+	}
+}
+
+// RandomTick ...
+func (m MelonSeeds) RandomTick(pos cube.Pos, tx *world.Tx, r *rand.Rand) {
+	if r.Float64() <= m.CalculateGrowthChance(pos, tx) && tx.Light(pos) >= 8 {
+		if m.Growth < 7 {
+			m.Growth++
+			tx.SetBlock(pos, m, nil)
+		} else {
+			directions := cube.Directions()
+			for _, i := range directions {
+				if _, ok := tx.Block(pos.Side(i.Face())).(Melon); ok {
+					return
+				}
+			}
+			direction := directions[r.IntN(len(directions))].Face()
+			stemPos := pos.Side(direction)
+			if _, ok := tx.Block(stemPos).(Air); ok {
+				switch tx.Block(stemPos.Side(cube.FaceDown)).(type) {
+				case Farmland, Dirt, Grass:
+					m.Direction = direction
+					tx.SetBlock(pos, m, nil)
+					tx.SetBlock(stemPos, Melon{}, nil)
+				}
+			}
+		}
+	}
+}
+
+// BoneMeal ...
+func (m MelonSeeds) BoneMeal(pos cube.Pos, tx *world.Tx) item.BoneMealResult {
+	if m.Growth == 7 {
+		return item.BoneMealResultNone
+	}
+	m.Growth = min(m.Growth+rand.IntN(4)+2, 7)
+	tx.SetBlock(pos, m, nil)
+	return item.BoneMealResultSmall
+}
+
+// UseOnBlock ...
+func (m MelonSeeds) UseOnBlock(pos cube.Pos, face cube.Face, _ mgl64.Vec3, tx *world.Tx, user item.User, ctx *item.UseContext) bool {
+	pos, _, used := firstReplaceable(tx, pos, face, m)
+	if !used {
+		return false
+	}
+
+	if _, ok := tx.Block(pos.Side(cube.FaceDown)).(Farmland); !ok {
+		return false
+	}
+
+	place(tx, pos, m, user, ctx)
+	return placed(ctx)
+}
+
+// BreakInfo ...
+func (m MelonSeeds) BreakInfo() BreakInfo {
+	return newBreakInfo(0, alwaysHarvestable, nothingEffective, oneOf(m))
+}
+
+// CompostChance ...
+func (MelonSeeds) CompostChance() float64 {
+	return 0.3
+}
+
+// EncodeItem ...
+func (m MelonSeeds) EncodeItem() (name string, meta int16) {
+	return "minecraft:melon_seeds", 0
+}
+
+// EncodeBlock ...
+func (m MelonSeeds) EncodeBlock() (name string, properties map[string]any) {
+	return "minecraft:melon_stem", map[string]any{"facing_direction": int32(m.Direction), "growth": int32(m.Growth)}
+}
+
+// allMelonStems ...
+func allMelonStems() (stems []world.Block) {
+	for i := 0; i <= 7; i++ {
+		for j := cube.Face(0); j <= 5; j++ {
+			stems = append(stems, MelonSeeds{crop: crop{Growth: i}, Direction: j})
+		}
+	}
+	return
+}