add entity:set_enabled(...)

doc/en/scripting/ecs.md

@@ -26,6 +26,9 @@ entity:get_uid() -> int
 entity:get_component(name: str) -> component or nil
 -- Checks for the presence of a component by name
 entity:has_component(name: str) -> bool
+
+-- Enables/disables the component
+entity:set_enabled(name: str, enable: bool)
 ```
 
 ## Built-in components

doc/ru/scripting/ecs.md

@@ -26,6 +26,9 @@ entity:get_uid() -> int
 entity:get_component(name: str) -> компонент или nil
 -- Проверяет наличие компонента по имени
 entity:has_component(name: str) -> bool
+
+-- Включает/выключает компонент по имени
+entity:set_enabled(name: str, enable: bool)
 ```
 
 ## Встроенные компоненты

res/modules/internal/stdcomp.lua

@@ -68,6 +68,22 @@ local Entity = {__index={
     def_index=function(self) return entities.get_def(self.eid) end,
     def_name=function(self) return entities.def_name(entities.get_def(self.eid)) end,
     get_player=function(self) return entities.get_player(self.eid) end,
+    set_enabled=function(self, name, flag)
+        local comp = self.components[name] 
+        if comp then
+            if flag then
+                if comp.__disabled and comp.on_enable then
+                    comp.on_enable()
+                end
+                comp.__disabled = nil
+            else
+                if not comp.__disabled and comp.on_disable then
+                    comp.on_disable()
+                end
+                comp.__disabled = true
+            end
+        end
+    end,
 }}
 
 local entities = {}
@@ -99,7 +115,7 @@ return {
             end
             for _, component in pairs(entity.components) do
                 local callback = component.on_update
-                if callback then
+                if not component.__disabled and callback then
                     local result, err = pcall(callback, tps)
                     if err then
                         debug.error(err)
@@ -113,7 +129,7 @@ return {
         for _,entity in pairs(entities) do
             for _, component in pairs(entity.components) do
                 local callback = component.on_render
-                if callback then
+                if not component.__disabled and callback then
                     local result, err = pcall(callback, delta)
                     if err then
                         debug.error(err)

src/data/dv.cpp

@@ -104,6 +104,9 @@ namespace dv {
     }
 
     boolean_t value::asBoolean() const {
+        if (type == value_type::none) {
+            return false;
+        }
         check_type(type, value_type::boolean);
         return val.boolean;
     }

src/logic/scripting/scripting.cpp

@@ -614,6 +614,10 @@ static void process_entity_callback(
 ) {
     auto L = lua::get_main_state();
     lua::pushenv(L, *env);
+    if (lua::hasfield(L, "__disabled")) {
+        lua::pop(L);
+        return;
+    }
     if (lua::getfield(L, name)) {
         if (args) {
             lua::call_nothrow(L, args(L), 0);