Variant: Added 64-bit packed arrays, renamed Variant::REAL to FLOAT.

- Renames PackedIntArray to PackedInt32Array.
- Renames PackedFloatArray to PackedFloat32Array.
- Adds PackedInt64Array and PackedFloat64Array.
- Renames Variant::REAL to Variant::FLOAT for consistency.

Packed arrays are for storing large amount of data and creating stuff like
meshes, buffers. textures, etc. Forcing them to be 64 is a huge waste of
memory. That said, many users requested the ability to have 64 bits packed
arrays for their games, so this is just an optional added type.

For Variant, the float datatype is always 64 bits, and exposed as `float`.

We still have `real_t` which is the datatype that can change from 32 to 64
bits depending on a compile flag (not entirely working right now, but that's
the idea). It affects math related datatypes and code only.

Neither Variant nor PackedArray make use of real_t, which is only intended
for math precision, so the term is removed from there to keep only float.

4 files changed, 29 insertions, 22 deletions

diff --git a/platform/android/api/java_class_wrapper.h b/platform/android/api/java_class_wrapper.h
index 5414b533f9..48b581958b 100644
--- a/platform/android/api/java_class_wrapper.h
+++ b/platform/android/api/java_class_wrapper.h
@@ -113,12 +113,12 @@ class JavaClass : public Reference {
 				break;
 			case ARG_TYPE_FLOAT | ARG_NUMBER_CLASS_BIT:
 			case ARG_TYPE_FLOAT:
-				r_type = Variant::REAL;
+				r_type = Variant::FLOAT;
 				likelihood = 1.0;
 				break;
 			case ARG_TYPE_DOUBLE | ARG_NUMBER_CLASS_BIT:
 			case ARG_TYPE_DOUBLE:
-				r_type = Variant::REAL;
+				r_type = Variant::FLOAT;
 				likelihood = 0.5;
 				break;
 			case ARG_TYPE_STRING: r_type = Variant::STRING; break;
@@ -134,23 +134,23 @@ class JavaClass : public Reference {
 				likelihood = 0.5;
 				break;
 			case ARG_ARRAY_BIT | ARG_TYPE_SHORT:
-				r_type = Variant::PACKED_INT_ARRAY;
+				r_type = Variant::PACKED_INT32_ARRAY;
 				likelihood = 0.3;
 				break;
 			case ARG_ARRAY_BIT | ARG_TYPE_INT:
-				r_type = Variant::PACKED_INT_ARRAY;
+				r_type = Variant::PACKED_INT32_ARRAY;
 				likelihood = 1.0;
 				break;
 			case ARG_ARRAY_BIT | ARG_TYPE_LONG:
-				r_type = Variant::PACKED_INT_ARRAY;
+				r_type = Variant::PACKED_INT32_ARRAY;
 				likelihood = 0.5;
 				break;
 			case ARG_ARRAY_BIT | ARG_TYPE_FLOAT:
-				r_type = Variant::PACKED_REAL_ARRAY;
+				r_type = Variant::PACKED_FLOAT32_ARRAY;
 				likelihood = 1.0;
 				break;
 			case ARG_ARRAY_BIT | ARG_TYPE_DOUBLE:
-				r_type = Variant::PACKED_REAL_ARRAY;
+				r_type = Variant::PACKED_FLOAT32_ARRAY;
 				likelihood = 0.5;
 				break;
 			case ARG_ARRAY_BIT | ARG_TYPE_STRING: r_type = Variant::PACKED_STRING_ARRAY; break;
diff --git a/platform/android/java_class_wrapper.cpp b/platform/android/java_class_wrapper.cpp
index 76213b949d..9e9b17fb99 100644
--- a/platform/android/java_class_wrapper.cpp
+++ b/platform/android/java_class_wrapper.cpp
@@ -97,7 +97,7 @@ bool JavaClass::_call_method(JavaObject *p_instance, const StringName &p_method,
 				case ARG_TYPE_DOUBLE: {
 
 					if (!p_args[i]->is_num())
-						arg_expected = Variant::REAL;
+						arg_expected = Variant::FLOAT;
 
 				} break;
 				case ARG_TYPE_STRING: {
diff --git a/platform/android/java_godot_lib_jni.cpp b/platform/android/java_godot_lib_jni.cpp
index b99cf70659..900a452024 100644
--- a/platform/android/java_godot_lib_jni.cpp
+++ b/platform/android/java_godot_lib_jni.cpp
@@ -99,7 +99,7 @@ jvalret _variant_to_jvalue(JNIEnv *env, Variant::Type p_type, const Variant *p_a
 				v.val.i = *p_arg;
 			};
 		} break;
-		case Variant::REAL: {
+		case Variant::FLOAT: {
 
 			if (force_jobject) {
 
@@ -182,7 +182,7 @@ jvalret _variant_to_jvalue(JNIEnv *env, Variant::Type p_type, const Variant *p_a
 			v.obj = jdict;
 		} break;
 
-		case Variant::PACKED_INT_ARRAY: {
+		case Variant::PACKED_INT32_ARRAY: {
 
 			Vector<int> array = *p_arg;
 			jintArray arr = env->NewIntArray(array.size());
@@ -201,7 +201,7 @@ jvalret _variant_to_jvalue(JNIEnv *env, Variant::Type p_type, const Variant *p_a
 			v.obj = arr;
 
 		} break;
-		case Variant::PACKED_REAL_ARRAY: {
+		case Variant::PACKED_FLOAT32_ARRAY: {
 
 			Vector<float> array = *p_arg;
 			jfloatArray arr = env->NewFloatArray(array.size());
@@ -211,6 +211,10 @@ jvalret _variant_to_jvalue(JNIEnv *env, Variant::Type p_type, const Variant *p_a
 			v.obj = arr;
 
 		} break;
+#ifndef _MSC_VER
+#warning This is missing 64 bits arrays, I have no idea how to do it in JNI
+#endif
+
 		default: {
 
 			v.val.i = 0;
@@ -319,7 +323,7 @@ Variant _jobject_to_variant(JNIEnv *env, jobject obj) {
 
 		jdoubleArray arr = (jdoubleArray)obj;
 		int fCount = env->GetArrayLength(arr);
-		PackedRealArray sarr;
+		PackedFloat32Array sarr;
 		sarr.resize(fCount);
 
 		real_t *w = sarr.ptrw();
@@ -337,7 +341,7 @@ Variant _jobject_to_variant(JNIEnv *env, jobject obj) {
 
 		jfloatArray arr = (jfloatArray)obj;
 		int fCount = env->GetArrayLength(arr);
-		PackedRealArray sarr;
+		PackedFloat32Array sarr;
 		sarr.resize(fCount);
 
 		real_t *w = sarr.ptrw();
@@ -487,7 +491,7 @@ public:
 
 				ret = env->CallIntMethodA(instance, E->get().method, v);
 			} break;
-			case Variant::REAL: {
+			case Variant::FLOAT: {
 
 				ret = env->CallFloatMethodA(instance, E->get().method, v);
 			} break;
@@ -505,7 +509,7 @@ public:
 
 				env->DeleteLocalRef(arr);
 			} break;
-			case Variant::PACKED_INT_ARRAY: {
+			case Variant::PACKED_INT32_ARRAY: {
 
 				jintArray arr = (jintArray)env->CallObjectMethodA(instance, E->get().method, v);
 
@@ -519,7 +523,7 @@ public:
 				ret = sarr;
 				env->DeleteLocalRef(arr);
 			} break;
-			case Variant::PACKED_REAL_ARRAY: {
+			case Variant::PACKED_FLOAT32_ARRAY: {
 
 				jfloatArray arr = (jfloatArray)env->CallObjectMethodA(instance, E->get().method, v);
 
@@ -534,6 +538,9 @@ public:
 				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);
@@ -1246,12 +1253,12 @@ static Variant::Type get_jni_type(const String &p_type) {
 		{ "void", Variant::NIL },
 		{ "boolean", Variant::BOOL },
 		{ "int", Variant::INT },
-		{ "float", Variant::REAL },
-		{ "double", Variant::REAL },
+		{ "float", Variant::FLOAT },
+		{ "double", Variant::FLOAT },
 		{ "java.lang.String", Variant::STRING },
-		{ "[I", Variant::PACKED_INT_ARRAY },
+		{ "[I", Variant::PACKED_INT32_ARRAY },
 		{ "[B", Variant::PACKED_BYTE_ARRAY },
-		{ "[F", Variant::PACKED_REAL_ARRAY },
+		{ "[F", Variant::PACKED_FLOAT32_ARRAY },
 		{ "[Ljava.lang.String;", Variant::PACKED_STRING_ARRAY },
 		{ "org.godotengine.godot.Dictionary", Variant::DICTIONARY },
 		{ NULL, Variant::NIL }
diff --git a/platform/javascript/javascript_eval.cpp b/platform/javascript/javascript_eval.cpp
index ab045d359b..44cce28d57 100644
--- a/platform/javascript/javascript_eval.cpp
+++ b/platform/javascript/javascript_eval.cpp
@@ -81,7 +81,7 @@ Variant JavaScript::eval(const String &p_code, bool p_use_global_exec_context) {
 
 			case 'number':
 				setValue(PTR, eval_ret, 'double');
-				return 3; // REAL
+				return 3; // FLOAT
 
 			case 'string':
 				var array_len = lengthBytesUTF8(eval_ret)+1;
@@ -128,7 +128,7 @@ Variant JavaScript::eval(const String &p_code, bool p_use_global_exec_context) {
 	switch (return_type) {
 		case Variant::BOOL:
 			return js_data.b;
-		case Variant::REAL:
+		case Variant::FLOAT:
 			return js_data.d;
 		case Variant::STRING: {
 			String str = String::utf8(js_data.s);