up3

server/block/model/composter.go

@@ -0,0 +1,32 @@
+package model
+
+import (
+	"math"
+
+	"github.com/df-mc/dragonfly/server/block/cube"
+	"github.com/df-mc/dragonfly/server/world"
+)
+
+// Composter is a model used by composter blocks. It is solid on all sides apart from the top, and the height of the
+// inside area depends on the level of compost inside the composter.
+type Composter struct {
+	// Level is the level of compost inside the composter.
+	Level int
+}
+
+// BBox ...
+func (c Composter) BBox(_ cube.Pos, _ world.BlockSource) []cube.BBox {
+	compostHeight := math.Abs(math.Min(float64(c.Level), 7)*0.125 - 0.0625)
+	return []cube.BBox{
+		cube.Box(0, 0, 0, 1, 1, 0.125),
+		cube.Box(0, 0, 0.875, 1, 1, 1),
+		cube.Box(0.875, 0, 0, 1, 1, 1),
+		cube.Box(0, 0, 0, 0.125, 1, 1),
+		cube.Box(0.125, 0, 0.125, 0.875, 0.125+compostHeight, 0.875),
+	}
+}
+
+// FaceSolid returns true for all faces other than the top.
+func (Composter) FaceSolid(_ cube.Pos, face cube.Face, _ world.BlockSource) bool {
+	return face != cube.FaceUp
+}