Feature/tinted glass

server/block/block.go

@@ -54,6 +54,14 @@ type LightDiffuser interface {
 	LightDiffusionLevel() uint8
 }
 
+// NonSuffocating represents a block that, despite being fully solid, never suffocates an entity standing
+// inside it. This is distinct from LightDiffuser: a block may block all light while still being safe to
+// stand inside, such as tinted glass.
+type NonSuffocating interface {
+	// SuffocationImmune returns true if the block never causes suffocation damage to entities inside it.
+	SuffocationImmune() bool
+}
+
 // RedstoneWireStepDowner represents a block with custom behaviour for redstone wire providing power when travelling
 // down it.
 type RedstoneWireStepDowner interface {

server/block/register.go

@@ -134,6 +134,7 @@ func init() {
 	world.RegisterBlock(PolishedSulfur{})
 	world.RegisterBlock(TNT{})
 	world.RegisterBlock(Terracotta{})
+	world.RegisterBlock(TintedGlass{})
 	world.RegisterBlock(Tuff{})
 	world.RegisterBlock(Tuff{Chiseled: true})
 	world.RegisterBlock(TuffBricks{})
@@ -429,6 +430,7 @@ func init() {
 	world.RegisterItem(PolishedSulfur{})
 	world.RegisterItem(TNT{})
 	world.RegisterItem(Terracotta{})
+	world.RegisterItem(TintedGlass{})
 	world.RegisterItem(Tuff{})
 	world.RegisterItem(Tuff{Chiseled: true})
 	world.RegisterItem(TuffBricks{})

server/block/tinted_glass.go

@@ -0,0 +1,29 @@
+package block
+
+// TintedGlass is a decorative, solid block that is visually see-through but, unlike regular glass, blocks
+// all light passing through it.
+type TintedGlass struct {
+	solid
+	clicksAndSticks
+}
+
+// SuffocationImmune always returns true. Tinted glass blocks light entirely but, like regular glass, never
+// suffocates an entity standing inside it.
+func (TintedGlass) SuffocationImmune() bool {
+	return true
+}
+
+// BreakInfo ...
+func (g TintedGlass) BreakInfo() BreakInfo {
+	return newBreakInfo(0.3, alwaysHarvestable, nothingEffective, oneOf(g)).withBlastResistance(0.3)
+}
+
+// EncodeItem ...
+func (TintedGlass) EncodeItem() (name string, meta int16) {
+	return "minecraft:tinted_glass", 0
+}
+
+// EncodeBlock ...
+func (TintedGlass) EncodeBlock() (string, map[string]any) {
+	return "minecraft:tinted_glass", nil
+}

server/player/player.go

@@ -2844,6 +2844,9 @@ func (p *Player) insideOfSolid() bool {
 		// Transparent.
 		return false
 	}
+	if immune, ok := b.(block.NonSuffocating); ok && immune.SuffocationImmune() {
+		return false
+	}
 	for _, blockBox := range b.Model().BBox(pos, p.tx) {
 		if blockBox.Translate(pos.Vec3()).IntersectsWith(box) {
 			return true