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Add RPC to Callable 

-Up to each scripting language to implement this
-If not supported for the function, it will just error when you try to call
This commit is contained in:
reduz 2021-05-03 18:00:44 -03:00
parent f47c285f67
commit c76acf6890
4 changed files with 118 additions and 0 deletions
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20
core/variant/callable.cpp
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@ -54,6 +54,20 @@ void Callable::call(const Variant **p_arguments, int p_argcount, Variant &r_retu
}
}
void Callable::rpc(int p_id, const Variant **p_arguments, int p_argcount, CallError &r_call_error) const {
if (is_null()) {
r_call_error.error = CallError::CALL_ERROR_INSTANCE_IS_NULL;
r_call_error.argument = 0;
r_call_error.expected = 0;
} else if (!is_custom()) {
r_call_error.error = CallError::CALL_ERROR_INVALID_METHOD;
r_call_error.argument = 0;
r_call_error.expected = 0;
} else {
custom->rpc(p_id, p_arguments, p_argcount, r_call_error);
}
}
Callable Callable::bind(const Variant **p_arguments, int p_argcount) const {
Vector<Variant> args;
args.resize(p_argcount);
@ -283,6 +297,12 @@ Callable::~Callable() {
}
}
void CallableCustom::rpc(int p_peer_id, const Variant **p_arguments, int p_argcount, Callable::CallError &r_call_error) const {
r_call_error.error = Callable::CallError::CALL_ERROR_INVALID_METHOD;
r_call_error.argument = 0;
r_call_error.expected = 0;
}
const Callable *CallableCustom::get_base_comparator() const {
return nullptr;
}

3
core/variant/callable.h
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@ -70,6 +70,8 @@ public:
void call(const Variant **p_arguments, int p_argcount, Variant &r_return_value, CallError &r_call_error) const;
void call_deferred(const Variant **p_arguments, int p_argcount) const;
void rpc(int p_id, const Variant **p_arguments, int p_argcount, CallError &r_call_error) const;
_FORCE_INLINE_ bool is_null() const {
return method == StringName() && object == 0;
}
@ -124,6 +126,7 @@ public:
virtual CompareLessFunc get_compare_less_func() const = 0;
virtual ObjectID get_object() const = 0; //must always be able to provide an object
virtual void call(const Variant **p_arguments, int p_argcount, Variant &r_return_value, Callable::CallError &r_call_error) const = 0;
virtual void rpc(int p_peer_id, const Variant **p_arguments, int p_argcount, Callable::CallError &r_call_error) const;
virtual const Callable *get_base_comparator() const;
CallableCustom();

79
core/variant/variant_call.cpp
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@ -493,6 +493,58 @@ static _FORCE_INLINE_ void vc_ptrcall(void (*method)(T *, P...), void *p_base, c
} \
};
#define VARARG_CLASS1(m_class, m_method_name, m_method_ptr, m_arg_type) \
struct Method_##m_class##_##m_method_name { \
static void call(Variant *base, const Variant **p_args, int p_argcount, Variant &r_ret, const Vector<Variant> &p_defvals, Callable::CallError &r_error) { \
m_method_ptr(base, p_args, p_argcount, r_ret, r_error); \
} \
static void validated_call(Variant *base, const Variant **p_args, int p_argcount, Variant *r_ret) { \
Callable::CallError ce; \
m_method_ptr(base, p_args, p_argcount, *r_ret, ce); \
} \
static void ptrcall(void *p_base, const void **p_args, void *r_ret, int p_argcount) { \
LocalVector<Variant> vars; \
vars.resize(p_argcount); \
LocalVector<const Variant *> vars_ptrs; \
vars_ptrs.resize(p_argcount); \
for (int i = 0; i < p_argcount; i++) { \
vars[i] = PtrToArg<Variant>::convert(p_args[i]); \
vars_ptrs[i] = &vars[i]; \
} \
Variant base = PtrToArg<m_class>::convert(p_base); \
Variant ret; \
Callable::CallError ce; \
m_method_ptr(&base, (const Variant **)&vars_ptrs[0], p_argcount, ret, ce); \
} \
static int get_argument_count() { \
return 1; \
} \
static Variant::Type get_argument_type(int p_arg) { \
return m_arg_type; \
} \
static Variant::Type get_return_type() { \
return Variant::NIL; \
} \
static bool has_return_type() { \
return false; \
} \
static bool is_const() { \
return true; \
} \
static bool is_static() { \
return false; \
} \
static bool is_vararg() { \
return true; \
} \
static Variant::Type get_base_type() { \
return GetTypeInfo<m_class>::VARIANT_TYPE; \
} \
static StringName get_name() { \
return #m_method_name; \
} \
};
struct _VariantCall {
static String func_PackedByteArray_get_string_from_ascii(PackedByteArray *p_instance) {
String s;
@ -792,6 +844,27 @@ struct _VariantCall {
callable->call_deferred(p_args, p_argcount);
}
static void func_Callable_rpc(Variant *v, const Variant **p_args, int p_argcount, Variant &r_ret, Callable::CallError &r_error) {
Callable *callable = VariantGetInternalPtr<Callable>::get_ptr(v);
callable->rpc(0, p_args, p_argcount, r_error);
}
static void func_Callable_rpc_id(Variant *v, const Variant **p_args, int p_argcount, Variant &r_ret, Callable::CallError &r_error) {
if (p_argcount == 0) {
r_error.error = Callable::CallError::CALL_ERROR_TOO_FEW_ARGUMENTS;
r_error.argument = 0;
r_error.expected = 1;
} else if (p_args[0]->get_type() != Variant::INT) {
r_error.error = Callable::CallError::CALL_ERROR_INVALID_ARGUMENT;
r_error.argument = 0;
r_error.expected = Variant::INT;
} else {
Callable *callable = VariantGetInternalPtr<Callable>::get_ptr(v);
callable->rpc(*p_args[0], &p_args[1], p_argcount - 1, r_error);
}
}
static void func_Callable_bind(Variant *v, const Variant **p_args, int p_argcount, Variant &r_ret, Callable::CallError &r_error) {
Callable *callable = VariantGetInternalPtr<Callable>::get_ptr(v);
r_ret = callable->bind(p_args, p_argcount);
@ -1219,6 +1292,10 @@ Variant Variant::get_constant_value(Variant::Type p_type, const StringName &p_va
VARARG_CLASS(m_type, m_name, m_method, m_has_return, m_ret_type) \
register_builtin_method<Method_##m_type##_##m_name>(sarray(), Vector<Variant>());
#define bind_custom1(m_type, m_name, m_method, m_arg_type, m_arg_name) \
VARARG_CLASS1(m_type, m_name, m_method, m_arg_type) \
register_builtin_method<Method_##m_type##_##m_name>(sarray(m_arg_name), Vector<Variant>());
static void _register_variant_builtin_methods() {
_VariantCall::constant_data = memnew_arr(_VariantCall::ConstantData, Variant::VARIANT_MAX);
builtin_method_info = memnew_arr(BuiltinMethodMap, Variant::VARIANT_MAX);
@ -1532,6 +1609,8 @@ static void _register_variant_builtin_methods() {
bind_custom(Callable, call, _VariantCall::func_Callable_call, true, Variant);
bind_custom(Callable, call_deferred, _VariantCall::func_Callable_call_deferred, false, Variant);
bind_custom(Callable, rpc, _VariantCall::func_Callable_rpc, false, Variant);
bind_custom1(Callable, rpc_id, _VariantCall::func_Callable_rpc_id, Variant::INT, "peer_id");
bind_custom(Callable, bind, _VariantCall::func_Callable_bind, true, Callable);
/* Signal */

16
doc/classes/Callable.xml
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@ -151,6 +151,22 @@
Returns [code]true[/code] if both [Callable]s invoke the same custom target.
</description>
</method>
<method name="rpc" qualifiers="vararg const">
<return type="void">
</return>
<description>
Perform an RPC (Remote Procedure Call). This is used for multiplayer and is normally not available unless the function being called has been marked as [i]RPC[/i]. Calling it on unsupported functions will result in an error.
</description>
</method>
<method name="rpc_id" qualifiers="vararg const">
<return type="void">
</return>
<argument index="0" name="peer_id" type="int">
</argument>
<description>
Perform an RPC (Remote Procedure Call) on a specific peer ID (see multiplayer documentation for reference). This is used for multiplayer and is normally not available unless the function being called has been marked as [i]RPC[/i]. Calling it on unsupported functions will result in an error.
</description>
</method>
<method name="unbind" qualifiers="const">
<return type="Callable">
</return>