add on_hud_render event

src/graphics/render/WorldRenderer.cpp

@@ -12,6 +12,7 @@
 #include "../../items/ItemDef.hpp"
 #include "../../items/ItemStack.hpp"
 #include "../../logic/PlayerController.hpp"
+#include "../../logic/scripting/scripting_hud.hpp"
 #include "../../maths/FrustumCulling.hpp"
 #include "../../maths/voxmaths.hpp"
 #include "../../objects/Player.hpp"
@@ -199,6 +200,9 @@ void WorldRenderer::renderLevel(
 
     shader->uniformMatrix("u_model", glm::mat4(1.0f));
     level->entities->render(assets, *modelBatch, *frustumCulling, pause);
+    if (!pause) {
+        scripting::on_frontend_render();
+    }
     modelBatch->render();
 
     skybox->unbind();

src/logic/PlayerController.cpp

@@ -139,6 +139,8 @@ void CameraControl::switchCamera() {
     if (static_cast<size_t>(index) != playerCameras.size()) {
         index = (index + 1) % playerCameras.size();
         player->currentCamera = playerCameras.at(index);
+    } else {
+        player->currentCamera = camera;
     }
 }
 

src/logic/scripting/scripting_hud.cpp

@@ -28,6 +28,15 @@ void scripting::on_frontend_init(Hud* hud) {
     }
 }
 
+void scripting::on_frontend_render() {
+    for (auto& pack : engine->getContentPacks()) {
+        lua::emit_event(lua::get_main_thread(), pack.id + ".hudrender", 
+        [&] (lua::State* L) {
+            return 0;            
+        });
+    }
+}
+
 void scripting::on_frontend_close() {
     for (auto& pack : engine->getContentPacks()) {
         lua::emit_event(lua::get_main_thread(), pack.id + ".hudclose", 
@@ -47,5 +56,6 @@ void scripting::load_hud_script(const scriptenv& senv, const std::string& packid
 
     register_event(env, "init", packid+".init");
     register_event(env, "on_hud_open", packid+".hudopen");
+    register_event(env, "on_hud_render", packid+".hudrender");
     register_event(env, "on_hud_close", packid+".hudclose");
 }

src/logic/scripting/scripting_hud.hpp

@@ -14,6 +14,7 @@ namespace scripting {
     extern Hud* hud;
 
     void on_frontend_init(Hud* hud);
+    void on_frontend_render();
     void on_frontend_close();
 
     /**