up3

server/block/tnt.go

@@ -0,0 +1,74 @@
+package block
+
+import (
+	"github.com/df-mc/dragonfly/server/block/cube"
+	"github.com/df-mc/dragonfly/server/item"
+	"github.com/df-mc/dragonfly/server/item/enchantment"
+	"github.com/df-mc/dragonfly/server/world"
+	"github.com/df-mc/dragonfly/server/world/sound"
+	"github.com/go-gl/mathgl/mgl64"
+	"math/rand/v2"
+	"time"
+)
+
+// TNT is an explosive block that can be primed to generate an explosion.
+type TNT struct {
+	solid
+}
+
+// ProjectileHit ...
+func (t TNT) ProjectileHit(pos cube.Pos, tx *world.Tx, e world.Entity, _ cube.Face) {
+	if f, ok := e.(flammableEntity); ok && f.OnFireDuration() > 0 {
+		t.Ignite(pos, tx, nil)
+	}
+}
+
+// Activate ...
+func (t TNT) Activate(pos cube.Pos, _ cube.Face, tx *world.Tx, u item.User, ctx *item.UseContext) bool {
+	held, _ := u.HeldItems()
+	if _, ok := held.Enchantment(enchantment.FireAspect); ok {
+		t.Ignite(pos, tx, nil)
+		ctx.DamageItem(1)
+		return true
+	}
+	return false
+}
+
+// Ignite ...
+func (t TNT) Ignite(pos cube.Pos, tx *world.Tx, _ world.Entity) bool {
+	spawnTnt(pos, tx, time.Second*4)
+	return true
+}
+
+// Explode ...
+func (t TNT) Explode(_ mgl64.Vec3, pos cube.Pos, tx *world.Tx, _ ExplosionConfig) {
+	spawnTnt(pos, tx, time.Second/2+time.Duration(rand.IntN(int(time.Second+time.Second/2))))
+}
+
+// BreakInfo ...
+func (t TNT) BreakInfo() BreakInfo {
+	return newBreakInfo(0, alwaysHarvestable, nothingEffective, oneOf(t))
+}
+
+// FlammabilityInfo ...
+func (t TNT) FlammabilityInfo() FlammabilityInfo {
+	return newFlammabilityInfo(15, 100, true)
+}
+
+// EncodeItem ...
+func (t TNT) EncodeItem() (name string, meta int16) {
+	return "minecraft:tnt", 0
+}
+
+// EncodeBlock ...
+func (t TNT) EncodeBlock() (name string, properties map[string]interface{}) {
+	return "minecraft:tnt", map[string]interface{}{"explode_bit": false}
+}
+
+// spawnTnt creates a new TNT entity at the given position with the given fuse duration.
+func spawnTnt(pos cube.Pos, tx *world.Tx, fuse time.Duration) {
+	tx.PlaySound(pos.Vec3Centre(), sound.TNT{})
+	tx.SetBlock(pos, nil, nil)
+	opts := world.EntitySpawnOpts{Position: pos.Vec3Centre()}
+	tx.AddEntity(tx.World().EntityRegistry().Config().TNT(opts, fuse))
+}