From 5bf63499004c64134254dfb38988a664780e9a41 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?No=C3=ABl=20Hagestein?=
 <6616996+Neol3108@users.noreply.github.com>
Date: Tue, 25 Aug 2026 01:55:04 +0200
Subject: [PATCH] fix(world): particle spawning (#3043)

---
 .../loader/wasm/wasm_host/wit/v0_1/world.rs   | 37 +++++++++++++++++--
 1 file changed, 34 insertions(+), 3 deletions(-)

diff --git a/crates/pumpkin/src/plugin/loader/wasm/wasm_host/wit/v0_1/world.rs b/crates/pumpkin/src/plugin/loader/wasm/wasm_host/wit/v0_1/world.rs
index cb1dff667..33638c2ea 100644
--- a/crates/pumpkin/src/plugin/loader/wasm/wasm_host/wit/v0_1/world.rs
+++ b/crates/pumpkin/src/plugin/loader/wasm/wasm_host/wit/v0_1/world.rs
@@ -934,9 +934,10 @@ impl pumpkin::plugin::world::HostWorld for PluginHostState {
         count: i32,
     ) -> wasmtime::Result<()> {
         let world_ref = self.get_world_res(&world)?;
-        let particle_name = format!("{particle:?}").to_lowercase().replace('_', "-");
-        let particle_data = pumpkin_data::particle::Particle::from_name(&particle_name)
-            .ok_or_else(|| wasmtime::Error::msg(format!("Unknown particle: {particle_name}")))?;
+        let particle_data =
+            pumpkin_data::particle::Particle::from_id(particle as u16).ok_or_else(|| {
+                wasmtime::Error::msg(format!("Unknown particle ID: {}", particle as u16))
+            })?;
 
         world_ref.provider.spawn_particle(
             pumpkin_util::math::vector3::Vector3::new(pos.0, pos.1, pos.2),
@@ -2256,3 +2257,33 @@ impl pumpkin_world::generation::generator::CustomChunkGenerator for WasmChunkGen
         chunk.stage = pumpkin_world::chunk_system::StagedChunkEnum::Features;
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use super::pumpkin;
+
+    #[test]
+    fn wit_particle_ids_match_internal_particle_ids() {
+        let cases = [
+            (
+                pumpkin::plugin::particles::Particle::AngryVillager,
+                pumpkin_data::particle::Particle::AngryVillager,
+            ),
+            (
+                pumpkin::plugin::particles::Particle::HappyVillager,
+                pumpkin_data::particle::Particle::HappyVillager,
+            ),
+            (
+                pumpkin::plugin::particles::Particle::SulfurCubeGoo,
+                pumpkin_data::particle::Particle::SulfurCubeGoo,
+            ),
+        ];
+
+        for (wit, internal) in cases {
+            assert_eq!(
+                pumpkin_data::particle::Particle::from_id(wit as u16),
+                Some(internal)
+            );
+        }
+    }
+}