Add readme file

README.md

@@ -0,0 +1,31 @@
+This module add [Spine](http://esotericsoftware.com/) animation support for godot game engie 2.x. It was tested with godot 2.1.
+
+Current useing the spine runtime version **3.5.51**.
+
+## About the lisence
+This module is forked from [sanikoyes's godot branch](https://github.com/sanikoyes/godot/tree/develop/modules/spine) and some of code are forked from [godot-spine-module](https://github.com/jjay/godot-spine-module). Both of the code are declared as MIT lisence.
+The lisence of this module is MIT
+
+```
+MIT License
+
+Copyright (c) 2017 Godot Explorer
+
+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.
+```

register_types.cpp

@@ -63,15 +63,15 @@ void _spAtlasPage_disposeTexture(spAtlasPage* self) {
 char* _spUtil_readFile(const char* p_path, int* p_length) {
 	FileAccess *f = FileAccess::open(p_path, FileAccess::READ);
 	ERR_FAIL_COND_V(!f, NULL);
-	
+
 	String str_path = String::utf8(p_path);
 
 	char *data = (char *)_malloc(*p_length, __FILE__, __LINE__);
 	*p_length = f->get_len();
 	data = (char *)_malloc(*p_length, __FILE__, __LINE__);
 	ERR_FAIL_COND_V(data == NULL, NULL);
 	f->get_buffer((uint8_t *)data, *p_length);
-	
+
 	/*
 	 * A pretty hacky part of patching Spine files
 	 * Preface: If I create spine atlas from images with some deep
@@ -90,7 +90,7 @@ char* _spUtil_readFile(const char* p_path, int* p_length) {
 	 * - may be find actual reason of my buggy animations
 	 *
 	 */
-	
+
 	Array _sp_invalid_names = Spine::get_invalid_names();
 	if (str_path.ends_with(".atlas")){
 		Array current_string = Array();
@@ -125,7 +125,7 @@ char* _spUtil_readFile(const char* p_path, int* p_length) {
 					if (data[i-k] != (int)(in[idx-k])){ match=false; break; }
 				}
 				if (!match) continue;
-				
+
 				IntArray extra_replaces;
 				for (int k=1; k<in.size()-idx;k++){
 					if (i+k >= *p_length){ match=false; break; }
@@ -140,7 +140,7 @@ char* _spUtil_readFile(const char* p_path, int* p_length) {
 				}
 			}
 		}
-		
+
 		_sp_invalid_names.resize(0);
 	}
 	memdelete(f);
@@ -149,6 +149,8 @@ char* _spUtil_readFile(const char* p_path, int* p_length) {
 
 static void *spine_malloc(size_t p_size) {
 
+	if (p_size == 0)
+		return NULL;
 	return memalloc(p_size);
 }
 
@@ -169,12 +171,12 @@ class ResourceFormatLoaderSpine : public ResourceFormatLoader {
 		String p_atlas = p_path.basename() + ".atlas";
 		res->atlas = spAtlas_createFromFile(p_atlas.utf8().get_data(), 0);
 		ERR_FAIL_COND_V(res->atlas == NULL, RES());
-		
+
 		if (p_path.extension() == "json"){
 			spSkeletonJson *json = spSkeletonJson_create(res->atlas);
 			ERR_FAIL_COND_V(json == NULL, RES());
 			json->scale = 1;
-			
+
 			res->data = spSkeletonJson_readSkeletonDataFile(json, p_path.utf8().get_data());
 			ERR_EXPLAIN(json->error ? json->error : "");
 			spSkeletonJson_dispose(json);
@@ -188,7 +190,7 @@ class ResourceFormatLoaderSpine : public ResourceFormatLoader {
 			spSkeletonBinary_dispose(bin);
 			ERR_FAIL_COND_V(res->data == NULL, RES());
 		}
-			
+
 		res->set_path(p_path);
 		float finish = OS::get_singleton()->get_ticks_msec();
 		print_line("Spine resource (" + p_path + ") loaded in " + itos(finish-start) + " msecs");

spine.cpp

@@ -612,13 +612,17 @@ void Spine::_notification(int p_what) {
 
 void Spine::set_resource(Ref<Spine::SpineResource> p_data) {
 
-	// cleanup
-	_spine_dispose();
+	if (res == p_data)
+		return;
+
+	_spine_dispose(); // cleanup
 
 	res = p_data;
-	if (res.is_null() || !res->data)
+	if (res.is_null())
 		return;
 
+	ERR_FAIL_COND(!res->data);
+
 	skeleton = spSkeleton_create(res->data);
 	root_bone = skeleton->bones[0];