add particles.stop(...)

res/content/base/scripts/world.lua

@@ -1,6 +1,6 @@
 function on_block_broken(id, x, y, z, playerid)
-    particles.emit({x+0.5, y+0.5, z+0.5}, 100, {
-        lifetime=2.0,
+    particles.emit({x+0.5, y+0.5, z+0.5}, 64, {
+        lifetime=1.0,
         spawn_interval=0.0001,
         explosion={4, 4, 4},
         texture="blocks:"..block.get_textures(id)[1],

src/graphics/render/WorldRenderer.cpp

@@ -535,10 +535,6 @@ void WorldRenderer::drawBorders(
     lineBatch->flush();
 }
 
-void WorldRenderer::addEmitter(std::unique_ptr<Emitter> emitter) {
-    particles->add(std::move(emitter));
-}
-
 void WorldRenderer::clear() {
     renderer->clear();
 }

src/graphics/render/WorldRenderer.hpp

@@ -8,6 +8,8 @@
 
 #include <glm/glm.hpp>
 
+#include "typedefs.hpp"
+
 class Level;
 class Player;
 class Camera;
@@ -42,7 +44,6 @@ class WorldRenderer {
     std::unique_ptr<Skybox> skybox;
     std::unique_ptr<Batch3D> batch3d;
     std::unique_ptr<ModelBatch> modelBatch;
-    std::unique_ptr<ParticlesRenderer> particles;
     
     float timer = 0.0f;
 
@@ -80,6 +81,8 @@ class WorldRenderer {
         float fogFactor
     );
 public:
+    std::unique_ptr<ParticlesRenderer> particles;
+
     static bool showChunkBorders;
     static bool showEntitiesDebug;
 
@@ -108,7 +111,5 @@ public:
         bool pause
     );
 
-    void addEmitter(std::unique_ptr<Emitter> emitter);
-
     void clear();
 };

src/logic/scripting/lua/libs/libparticles.cpp

@@ -2,6 +2,7 @@
 
 #include "logic/scripting/scripting_hud.hpp"
 #include "graphics/render/WorldRenderer.hpp"
+#include "graphics/render/ParticlesRenderer.hpp"
 #include "graphics/render/Emitter.hpp"
 #include "assets/assets_util.hpp"
 #include "engine.hpp"
@@ -34,11 +35,19 @@ static int l_emit(lua::State* L) {
         region.region,
         count
     );
-    renderer->addEmitter(std::move(emitter));
+    return lua::pushinteger(L, renderer->particles->add(std::move(emitter)));
+}
+
+static int l_stop(lua::State* L) {
+    u64id_t id = lua::touinteger(L, 1);
+    if (auto emitter = renderer->particles->getEmitter(id)) {
+        emitter->stop();
+    }
     return 0;
 }
 
 const luaL_Reg particleslib[] = {
     {"emit", lua::wrap<l_emit>},
+    {"stop", lua::wrap<l_stop>},
     {NULL, NULL}
 };