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Add signal support to Godot Android plugin:

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Supports registering and emitting signal from a Godot Android plugin
This commit is contained in:
fhuya 2020-03-25 14:01:12 -07:00
parent 0826b63c7e
commit 948c3cbb88
8 changed files with 480 additions and 188 deletions
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5
platform/android/api/api.cpp
View file

@ -32,6 +32,7 @@
#include "core/engine.h"
#include "java_class_wrapper.h"
#include "jni_singleton.h"
#if !defined(ANDROID_ENABLED)
static JavaClassWrapper *java_class_wrapper = nullptr;
@ -40,7 +41,11 @@ static JavaClassWrapper *java_class_wrapper = nullptr;
void register_android_api() {
#if !defined(ANDROID_ENABLED)
// On Android platforms, the `java_class_wrapper` instantiation and the
// `JNISingleton` registration occurs in
// `platform/android/java_godot_lib_jni.cpp#Java_org_godotengine_godot_GodotLib_setup`
java_class_wrapper = memnew(JavaClassWrapper); // Dummy
ClassDB::register_class<JNISingleton>();
#endif
ClassDB::register_class<JavaClass>();

242
platform/android/api/jni_singleton.h Normal file
View file

@ -0,0 +1,242 @@
/*************************************************************************/
/* jni_singleton.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#ifndef JNI_SINGLETON_H
#define JNI_SINGLETON_H
#include <core/engine.h>
#include <core/variant.h>
#ifdef ANDROID_ENABLED
#include <platform/android/jni_utils.h>
#endif
class JNISingleton : public Object {
GDCLASS(JNISingleton, Object);
#ifdef ANDROID_ENABLED
struct MethodData {
jmethodID method;
Variant::Type ret_type;
Vector<Variant::Type> argtypes;
};
jobject instance;
Map<StringName, MethodData> method_map;
#endif
public:
virtual Variant call(const StringName &p_method, const Variant **p_args, int p_argcount, Callable::CallError &r_error) {
#ifdef ANDROID_ENABLED
Map<StringName, MethodData>::Element *E = method_map.find(p_method);
// Check the method we're looking for is in the JNISingleton map and that
// the arguments match.
bool call_error = !E || E->get().argtypes.size() != p_argcount;
if (!call_error) {
for (int i = 0; i < p_argcount; i++) {
if (!Variant::can_convert(p_args[i]->get_type(), E->get().argtypes[i])) {
call_error = true;
break;
}
}
}
if (call_error) {
// The method is not in this map, defaulting to the regular instance calls.
return Object::call(p_method, p_args, p_argcount, r_error);
}
ERR_FAIL_COND_V(!instance, Variant());
r_error.error = Callable::CallError::CALL_OK;
jvalue *v = nullptr;
if (p_argcount) {
v = (jvalue *)alloca(sizeof(jvalue) * p_argcount);
}
JNIEnv *env = ThreadAndroid::get_env();
int res = env->PushLocalFrame(16);
ERR_FAIL_COND_V(res != 0, Variant());
List<jobject> to_erase;
for (int i = 0; i < p_argcount; i++) {
jvalret vr = _variant_to_jvalue(env, E->get().argtypes[i], p_args[i]);
v[i] = vr.val;
if (vr.obj)
to_erase.push_back(vr.obj);
}
Variant ret;
switch (E->get().ret_type) {
case Variant::NIL: {
env->CallVoidMethodA(instance, E->get().method, v);
} break;
case Variant::BOOL: {
ret = env->CallBooleanMethodA(instance, E->get().method, v) == JNI_TRUE;
} break;
case Variant::INT: {
ret = env->CallIntMethodA(instance, E->get().method, v);
} break;
case Variant::FLOAT: {
ret = env->CallFloatMethodA(instance, E->get().method, v);
} break;
case Variant::STRING: {
jobject o = env->CallObjectMethodA(instance, E->get().method, v);
ret = jstring_to_string((jstring)o, env);
env->DeleteLocalRef(o);
} break;
case Variant::PACKED_STRING_ARRAY: {
jobjectArray arr = (jobjectArray)env->CallObjectMethodA(instance, E->get().method, v);
ret = _jobject_to_variant(env, arr);
env->DeleteLocalRef(arr);
} break;
case Variant::PACKED_INT32_ARRAY: {
jintArray arr = (jintArray)env->CallObjectMethodA(instance, E->get().method, v);
int fCount = env->GetArrayLength(arr);
Vector<int> sarr;
sarr.resize(fCount);
int *w = sarr.ptrw();
env->GetIntArrayRegion(arr, 0, fCount, w);
ret = sarr;
env->DeleteLocalRef(arr);
} break;
case Variant::PACKED_FLOAT32_ARRAY: {
jfloatArray arr = (jfloatArray)env->CallObjectMethodA(instance, E->get().method, v);
int fCount = env->GetArrayLength(arr);
Vector<float> sarr;
sarr.resize(fCount);
float *w = sarr.ptrw();
env->GetFloatArrayRegion(arr, 0, fCount, w);
ret = sarr;
env->DeleteLocalRef(arr);
} break;
#ifndef _MSC_VER
#warning This is missing 64 bits arrays, I have no idea how to do it in JNI
#endif
case Variant::DICTIONARY: {
jobject obj = env->CallObjectMethodA(instance, E->get().method, v);
ret = _jobject_to_variant(env, obj);
env->DeleteLocalRef(obj);
} break;
default: {
env->PopLocalFrame(nullptr);
ERR_FAIL_V(Variant());
} break;
}
while (to_erase.size()) {
env->DeleteLocalRef(to_erase.front()->get());
to_erase.pop_front();
}
env->PopLocalFrame(nullptr);
return ret;
#else // ANDROID_ENABLED
// Defaulting to the regular instance calls.
return Object::call(p_method, p_args, p_argcount, r_error);
#endif
}
#ifdef ANDROID_ENABLED
jobject get_instance() const {
return instance;
}
void set_instance(jobject p_instance) {
instance = p_instance;
}
void add_method(const StringName &p_name, jmethodID p_method, const Vector<Variant::Type> &p_args, Variant::Type p_ret_type) {
MethodData md;
md.method = p_method;
md.argtypes = p_args;
md.ret_type = p_ret_type;
method_map[p_name] = md;
}
void add_signal(const StringName &p_name, const Vector<Variant::Type> &p_args) {
if (p_args.size() == 0)
ADD_SIGNAL(MethodInfo(p_name));
else if (p_args.size() == 1)
ADD_SIGNAL(MethodInfo(p_name, PropertyInfo(p_args[0], "arg1")));
else if (p_args.size() == 2)
ADD_SIGNAL(MethodInfo(p_name, PropertyInfo(p_args[0], "arg1"), PropertyInfo(p_args[1], "arg2")));
else if (p_args.size() == 3)
ADD_SIGNAL(MethodInfo(p_name, PropertyInfo(p_args[0], "arg1"), PropertyInfo(p_args[1], "arg2"), PropertyInfo(p_args[2], "arg3")));
else if (p_args.size() == 4)
ADD_SIGNAL(MethodInfo(p_name, PropertyInfo(p_args[0], "arg1"), PropertyInfo(p_args[1], "arg2"), PropertyInfo(p_args[2], "arg3"), PropertyInfo(p_args[3], "arg4")));
else if (p_args.size() == 5)
ADD_SIGNAL(MethodInfo(p_name, PropertyInfo(p_args[0], "arg1"), PropertyInfo(p_args[1], "arg2"), PropertyInfo(p_args[2], "arg3"), PropertyInfo(p_args[3], "arg4"), PropertyInfo(p_args[4], "arg5")));
}
#endif
JNISingleton() {
#ifdef ANDROID_ENABLED
instance = nullptr;
#endif
}
};
#endif // JNI_SINGLETON_H

85
platform/android/java/lib/src/org/godotengine/godot/plugin/GodotPlugin.java
View file

@ -34,6 +34,8 @@ import android.app.Activity;
import android.content.Intent;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.text.TextUtils;
import android.util.Log;
import android.view.Surface;
import android.view.View;
import java.lang.reflect.Method;
@ -41,8 +43,10 @@ import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import javax.microedition.khronos.egl.EGLConfig;
import javax.microedition.khronos.opengles.GL10;
import org.godotengine.godot.BuildConfig;
import org.godotengine.godot.Godot;
/**
@ -70,7 +74,10 @@ import org.godotengine.godot.Godot;
*/
public abstract class GodotPlugin {
private static final String TAG = GodotPlugin.class.getSimpleName();
private final Godot godot;
private final ConcurrentHashMap<String, SignalInfo> registeredSignals = new ConcurrentHashMap<>();
public GodotPlugin(Godot godot) {
this.godot = godot;
@ -118,6 +125,13 @@ public abstract class GodotPlugin {
nativeRegisterMethod(getPluginName(), method.getName(), method.getReturnType().getName(), pt);
}
// Register the signals for this plugin.
for (SignalInfo signalInfo : getPluginSignals()) {
String signalName = signalInfo.getName();
nativeRegisterSignal(getPluginName(), signalName, signalInfo.getParamTypesNames());
registeredSignals.put(signalName, signalInfo);
}
// Get the list of gdnative libraries to register.
Set<String> gdnativeLibrariesPaths = getPluginGDNativeLibrariesPaths();
if (!gdnativeLibrariesPaths.isEmpty()) {
@ -220,7 +234,17 @@ public abstract class GodotPlugin {
* Returns the list of methods to be exposed to Godot.
*/
@NonNull
public abstract List<String> getPluginMethods();
public List<String> getPluginMethods() {
return Collections.emptyList();
}
/**
* Returns the list of signals to be exposed to Godot.
*/
@NonNull
public Set<SignalInfo> getPluginSignals() {
return Collections.emptySet();
}
/**
* Returns the paths for the plugin's gdnative libraries.
@ -252,6 +276,49 @@ public abstract class GodotPlugin {
godot.runOnRenderThread(action);
}
/**
* Emit a registered Godot signal.
* @param signalName
* @param signalArgs
*/
protected void emitSignal(final String signalName, final Object... signalArgs) {
try {
// Check that the given signal is among the registered set.
SignalInfo signalInfo = registeredSignals.get(signalName);
if (signalInfo == null) {
throw new IllegalArgumentException(
"Signal " + signalName + " is not registered for this plugin.");
}
// Validate the arguments count.
Class<?>[] signalParamTypes = signalInfo.getParamTypes();
if (signalArgs.length != signalParamTypes.length) {
throw new IllegalArgumentException(
"Invalid arguments count. Should be " + signalParamTypes.length + " but is " + signalArgs.length);
}
// Validate the argument's types.
for (int i = 0; i < signalParamTypes.length; i++) {
if (!signalParamTypes[i].isInstance(signalArgs[i])) {
throw new IllegalArgumentException(
"Invalid type for argument #" + i + ". Should be of type " + signalParamTypes[i].getName());
}
}
runOnRenderThread(new Runnable() {
@Override
public void run() {
nativeEmitSignal(getPluginName(), signalName, signalArgs);
}
});
} catch (IllegalArgumentException exception) {
Log.w(TAG, exception.getMessage());
if (BuildConfig.DEBUG) {
throw exception;
}
}
}
/**
* Used to setup a {@link GodotPlugin} instance.
* @param p_name Name of the instance.
@ -272,4 +339,20 @@ public abstract class GodotPlugin {
* @param gdnlibPaths Paths to the libraries relative to the 'assets' directory.
*/
private native void nativeRegisterGDNativeLibraries(String[] gdnlibPaths);
/**
* Used to complete registration of the {@link GodotPlugin} instance's methods.
* @param pluginName Name of the plugin
* @param signalName Name of the signal to register
* @param signalParamTypes Signal parameters types
*/
private native void nativeRegisterSignal(String pluginName, String signalName, String[] signalParamTypes);
/**
* Used to emit signal by {@link GodotPlugin} instance.
* @param pluginName Name of the plugin
* @param signalName Name of the signal to emit
* @param signalParams Signal parameters
*/
private native void nativeEmitSignal(String pluginName, String signalName, Object[] signalParams);
}

98
platform/android/java/lib/src/org/godotengine/godot/plugin/SignalInfo.java Normal file
View file

@ -0,0 +1,98 @@
/*************************************************************************/
/* SignalInfo.java */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2019 Godot Engine contributors (cf. AUTHORS.md) */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
package org.godotengine.godot.plugin;
import android.support.annotation.NonNull;
import android.text.TextUtils;
import java.util.Arrays;
/**
* Store information about a {@link GodotPlugin}'s signal.
*/
public final class SignalInfo {
private final String name;
private final Class<?>[] paramTypes;
private final String[] paramTypesNames;
public SignalInfo(@NonNull String signalName, Class<?>... paramTypes) {
if (TextUtils.isEmpty(signalName)) {
throw new IllegalArgumentException("Invalid signal name: " + signalName);
}
this.name = signalName;
this.paramTypes = paramTypes == null ? new Class<?>[ 0 ] : paramTypes;
this.paramTypesNames = new String[this.paramTypes.length];
for (int i = 0; i < this.paramTypes.length; i++) {
this.paramTypesNames[i] = this.paramTypes[i].getName();
}
}
public String getName() {
return name;
}
Class<?>[] getParamTypes() {
return paramTypes;
}
String[] getParamTypesNames() {
return paramTypesNames;
}
@Override
public String toString() {
return "SignalInfo{"
+
"name='" + name + '\'' +
", paramsTypes=" + Arrays.toString(paramTypes) +
'}';
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (!(o instanceof SignalInfo)) {
return false;
}
SignalInfo that = (SignalInfo)o;
return name.equals(that.name);
}
@Override
public int hashCode() {
return name.hashCode();
}
}

2
platform/android/java_godot_lib_jni.cpp
View file

@ -35,6 +35,7 @@
#include "android/asset_manager_jni.h"
#include "api/java_class_wrapper.h"
#include "api/jni_singleton.h"
#include "audio_driver_jandroid.h"
#include "core/engine.h"
#include "core/input/input_filter.h"
@ -162,6 +163,7 @@ JNIEXPORT void JNICALL Java_org_godotengine_godot_GodotLib_setup(JNIEnv *env, jc
}
java_class_wrapper = memnew(JavaClassWrapper(godot_java->get_activity()));
ClassDB::register_class<JNISingleton>();
}
JNIEXPORT void JNICALL Java_org_godotengine_godot_GodotLib_resize(JNIEnv *env, jclass clazz, jint width, jint height) {

186
platform/android/jni_utils.h
View file

@ -53,190 +53,4 @@ Variant::Type get_jni_type(const String &p_type);
const char *get_jni_sig(const String &p_type);
class JNISingleton : public Object {
GDCLASS(JNISingleton, Object);
struct MethodData {
jmethodID method;
Variant::Type ret_type;
Vector<Variant::Type> argtypes;
};
jobject instance;
Map<StringName, MethodData> method_map;
public:
virtual Variant call(const StringName &p_method, const Variant **p_args, int p_argcount, Callable::CallError &r_error) {
ERR_FAIL_COND_V(!instance, Variant());
r_error.error = Callable::CallError::CALL_OK;
Map<StringName, MethodData>::Element *E = method_map.find(p_method);
if (!E) {
r_error.error = Callable::CallError::CALL_ERROR_INVALID_METHOD;
return Variant();
}
int ac = E->get().argtypes.size();
if (ac < p_argcount) {
r_error.error = Callable::CallError::CALL_ERROR_TOO_FEW_ARGUMENTS;
r_error.argument = ac;
return Variant();
}
if (ac > p_argcount) {
r_error.error = Callable::CallError::CALL_ERROR_TOO_MANY_ARGUMENTS;
r_error.argument = ac;
return Variant();
}
for (int i = 0; i < p_argcount; i++) {
if (!Variant::can_convert(p_args[i]->get_type(), E->get().argtypes[i])) {
r_error.error = Callable::CallError::CALL_ERROR_INVALID_ARGUMENT;
r_error.argument = i;
r_error.expected = E->get().argtypes[i];
}
}
jvalue *v = nullptr;
if (p_argcount) {
v = (jvalue *)alloca(sizeof(jvalue) * p_argcount);
}
JNIEnv *env = ThreadAndroid::get_env();
int res = env->PushLocalFrame(16);
ERR_FAIL_COND_V(res != 0, Variant());
List<jobject> to_erase;
for (int i = 0; i < p_argcount; i++) {
jvalret vr = _variant_to_jvalue(env, E->get().argtypes[i], p_args[i]);
v[i] = vr.val;
if (vr.obj)
to_erase.push_back(vr.obj);
}
Variant ret;
switch (E->get().ret_type) {
case Variant::NIL: {
env->CallVoidMethodA(instance, E->get().method, v);
} break;
case Variant::BOOL: {
ret = env->CallBooleanMethodA(instance, E->get().method, v) == JNI_TRUE;
} break;
case Variant::INT: {
ret = env->CallIntMethodA(instance, E->get().method, v);
} break;
case Variant::FLOAT: {
ret = env->CallFloatMethodA(instance, E->get().method, v);
} break;
case Variant::STRING: {
jobject o = env->CallObjectMethodA(instance, E->get().method, v);
ret = jstring_to_string((jstring)o, env);
env->DeleteLocalRef(o);
} break;
case Variant::PACKED_STRING_ARRAY: {
jobjectArray arr = (jobjectArray)env->CallObjectMethodA(instance, E->get().method, v);
ret = _jobject_to_variant(env, arr);
env->DeleteLocalRef(arr);
} break;
case Variant::PACKED_INT32_ARRAY: {
jintArray arr = (jintArray)env->CallObjectMethodA(instance, E->get().method, v);
int fCount = env->GetArrayLength(arr);
Vector<int> sarr;
sarr.resize(fCount);
int *w = sarr.ptrw();
env->GetIntArrayRegion(arr, 0, fCount, w);
ret = sarr;
env->DeleteLocalRef(arr);
} break;
case Variant::PACKED_FLOAT32_ARRAY: {
jfloatArray arr = (jfloatArray)env->CallObjectMethodA(instance, E->get().method, v);
int fCount = env->GetArrayLength(arr);
Vector<float> sarr;
sarr.resize(fCount);
float *w = sarr.ptrw();
env->GetFloatArrayRegion(arr, 0, fCount, w);
ret = sarr;
env->DeleteLocalRef(arr);
} break;
#ifndef _MSC_VER
#warning This is missing 64 bits arrays, I have no idea how to do it in JNI
#endif
case Variant::DICTIONARY: {
jobject obj = env->CallObjectMethodA(instance, E->get().method, v);
ret = _jobject_to_variant(env, obj);
env->DeleteLocalRef(obj);
} break;
default: {
env->PopLocalFrame(nullptr);
ERR_FAIL_V(Variant());
} break;
}
while (to_erase.size()) {
env->DeleteLocalRef(to_erase.front()->get());
to_erase.pop_front();
}
env->PopLocalFrame(nullptr);
return ret;
}
jobject get_instance() const {
return instance;
}
void set_instance(jobject p_instance) {
instance = p_instance;
}
void add_method(const StringName &p_name, jmethodID p_method, const Vector<Variant::Type> &p_args, Variant::Type p_ret_type) {
MethodData md;
md.method = p_method;
md.argtypes = p_args;
md.ret_type = p_ret_type;
method_map[p_name] = md;
}
JNISingleton() {
instance = nullptr;
}
};
#endif // JNI_UTILS_H

48
platform/android/plugin/godot_plugin_jni.cpp
View file

@ -33,6 +33,7 @@
#include <core/engine.h>
#include <core/error_macros.h>
#include <core/project_settings.h>
#include <platform/android/api/jni_singleton.h>
#include <platform/android/jni_utils.h>
#include <platform/android/string_android.h>
@ -43,7 +44,7 @@ extern "C" {
JNIEXPORT void JNICALL Java_org_godotengine_godot_plugin_GodotPlugin_nativeRegisterSingleton(JNIEnv *env, jobject obj, jstring name) {
String singname = jstring_to_string(name, env);
JNISingleton *s = memnew(JNISingleton);
JNISingleton *s = (JNISingleton *)ClassDB::instance("JNISingleton");
s->set_instance(env->NewGlobalRef(obj));
jni_singletons[singname] = s;
@ -86,6 +87,51 @@ JNIEXPORT void JNICALL Java_org_godotengine_godot_plugin_GodotPlugin_nativeRegis
s->add_method(mname, mid, types, get_jni_type(retval));
}
JNIEXPORT void JNICALL Java_org_godotengine_godot_plugin_GodotPlugin_nativeRegisterSignal(JNIEnv *env, jobject obj, jstring j_plugin_name, jstring j_signal_name, jobjectArray j_signal_param_types) {
String singleton_name = jstring_to_string(j_plugin_name, env);
ERR_FAIL_COND(!jni_singletons.has(singleton_name));
JNISingleton *singleton = jni_singletons.get(singleton_name);
String signal_name = jstring_to_string(j_signal_name, env);
Vector<Variant::Type> types;
int stringCount = env->GetArrayLength(j_signal_param_types);
for (int i = 0; i < stringCount; i++) {
jstring j_signal_param_type = (jstring)env->GetObjectArrayElement(j_signal_param_types, i);
const String signal_param_type = jstring_to_string(j_signal_param_type, env);
types.push_back(get_jni_type(signal_param_type));
}
singleton->add_signal(signal_name, types);
}
JNIEXPORT void JNICALL Java_org_godotengine_godot_plugin_GodotPlugin_nativeEmitSignal(JNIEnv *env, jobject obj, jstring j_plugin_name, jstring j_signal_name, jobjectArray j_signal_params) {
String singleton_name = jstring_to_string(j_plugin_name, env);
ERR_FAIL_COND(!jni_singletons.has(singleton_name));
JNISingleton *singleton = jni_singletons.get(singleton_name);
String signal_name = jstring_to_string(j_signal_name, env);
int count = env->GetArrayLength(j_signal_params);
const Variant *args[count];
for (int i = 0; i < count; i++) {
jobject j_param = env->GetObjectArrayElement(j_signal_params, i);
Variant variant = _jobject_to_variant(env, j_param);
args[i] = &variant;
env->DeleteLocalRef(j_param);
};
singleton->emit_signal(signal_name, args, count);
}
JNIEXPORT void JNICALL Java_org_godotengine_godot_plugin_GodotPlugin_nativeRegisterGDNativeLibraries(JNIEnv *env, jobject obj, jobjectArray gdnlib_paths) {
int gdnlib_count = env->GetArrayLength(gdnlib_paths);
if (gdnlib_count == 0) {

2
platform/android/plugin/godot_plugin_jni.h
View file

@ -37,6 +37,8 @@
extern "C" {
JNIEXPORT void JNICALL Java_org_godotengine_godot_plugin_GodotPlugin_nativeRegisterSingleton(JNIEnv *env, jobject obj, jstring name);
JNIEXPORT void JNICALL Java_org_godotengine_godot_plugin_GodotPlugin_nativeRegisterMethod(JNIEnv *env, jobject obj, jstring sname, jstring name, jstring ret, jobjectArray args);
JNIEXPORT void JNICALL Java_org_godotengine_godot_plugin_GodotPlugin_nativeRegisterSignal(JNIEnv *env, jobject obj, jstring j_plugin_name, jstring j_signal_name, jobjectArray j_signal_param_types);
JNIEXPORT void JNICALL Java_org_godotengine_godot_plugin_GodotPlugin_nativeEmitSignal(JNIEnv *env, jobject obj, jstring j_plugin_name, jstring j_signal_name, jobjectArray j_signal_params);
JNIEXPORT void JNICALL Java_org_godotengine_godot_plugin_GodotPlugin_nativeRegisterGDNativeLibraries(JNIEnv *env, jobject obj, jobjectArray gdnlib_paths);
}