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+/*
+ * cocos2d for iPhone: http://www.cocos2d-iphone.org
+ *
+ * Copyright (c) 2009-2010 Ricardo Quesada
+ * Copyright (c) 2011 Zynga Inc.
+ * 
+ * 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.
+ *
+ *
+ * TMX Tiled Map support:
+ * http://www.mapeditor.org
+ *
+ */
+
+
+#import <Foundation/Foundation.h>
+#include <zlib.h>
+
+#import "ccMacros.h"
+#import "Support/CGPointExtension.h"
+#import "CCTMXXMLParser.h"
+#import "CCTMXTiledMap.h"
+#import "CCTMXObjectGroup.h"
+#import "Support/base64.h"
+#import "Support/ZipUtils.h"
+#import "Support/CCFileUtils.h"
+
+#pragma mark -
+#pragma mark TMXLayerInfo
+
+
+@implementation CCTMXLayerInfo
+
+@synthesize name = name_, layerSize = layerSize_, tiles = tiles_, visible = visible_, opacity = opacity_, ownTiles = ownTiles_, minGID = minGID_, maxGID = maxGID_, properties = properties_;
+@synthesize offset = offset_;
+-(id) init
+{
+        if( (self=[super init])) {
+                ownTiles_ = YES;
+                minGID_ = 100000;
+                maxGID_ = 0;
+                self.name = nil;
+                tiles_ = NULL;
+                offset_ = CGPointZero;
+                self.properties = [NSMutableDictionary dictionaryWithCapacity:5];
+        }
+        return self;
+}
+- (void) dealloc
+{
+        CCLOGINFO(@"cocos2d: deallocing %@",self);
+        
+        [name_ release];
+        [properties_ release];
+
+        if( ownTiles_ && tiles_ ) {
+                free( tiles_ );
+                tiles_ = NULL;
+        }
+        [super dealloc];
+}
+
+@end
+
+#pragma mark -
+#pragma mark TMXTilesetInfo
+@implementation CCTMXTilesetInfo
+
+@synthesize name = name_, firstGid = firstGid_, tileSize = tileSize_, spacing = spacing_, margin = margin_, sourceImage = sourceImage_, imageSize = imageSize_;
+
+- (void) dealloc
+{
+        CCLOGINFO(@"cocos2d: deallocing %@", self);
+        [sourceImage_ release];
+        [name_ release];
+        [super dealloc];
+}
+
+-(CGRect) rectForGID:(unsigned int)gid
+{
+        CGRect rect;
+        rect.size = tileSize_;
+        
+        gid = gid - firstGid_;
+        
+        int max_x = (imageSize_.width - margin_*2 + spacing_) / (tileSize_.width + spacing_);
+        //      int max_y = (imageSize.height - margin*2 + spacing) / (tileSize.height + spacing);
+        
+        rect.origin.x = (gid % max_x) * (tileSize_.width + spacing_) + margin_;
+        rect.origin.y = (gid / max_x) * (tileSize_.height + spacing_) + margin_;
+        
+        return rect;
+}
+@end
+
+#pragma mark -
+#pragma mark CCTMXMapInfo
+
+@interface CCTMXMapInfo (Private)
+/* initalises parsing of an XML file, either a tmx (Map) file or tsx (Tileset) file */
+-(void) parseXMLFile:(NSString *)xmlFilename;
+@end
+
+
+@implementation CCTMXMapInfo
+
+@synthesize orientation = orientation_, mapSize = mapSize_, layers = layers_, tilesets = tilesets_, tileSize = tileSize_, filename = filename_, objectGroups = objectGroups_, properties = properties_;
+@synthesize tileProperties = tileProperties_;
+
++(id) formatWithTMXFile:(NSString*)tmxFile
+{
+        return [[[self alloc] initWithTMXFile:tmxFile] autorelease];
+}
+
+-(id) initWithTMXFile:(NSString*)tmxFile
+{
+        if( (self=[super init])) {
+                
+                self.tilesets = [NSMutableArray arrayWithCapacity:4];
+                self.layers = [NSMutableArray arrayWithCapacity:4];
+                self.filename = tmxFile;
+                self.objectGroups = [NSMutableArray arrayWithCapacity:4];
+                self.properties = [NSMutableDictionary dictionaryWithCapacity:5];
+                self.tileProperties = [NSMutableDictionary dictionaryWithCapacity:5];
+        
+                // tmp vars
+                currentString = [[NSMutableString alloc] initWithCapacity:1024];
+                storingCharacters = NO;
+                layerAttribs = TMXLayerAttribNone;
+                parentElement = TMXPropertyNone;
+                
+                [self parseXMLFile:filename_];          
+        }
+        return self;
+}
+- (void) dealloc
+{
+        CCLOGINFO(@"cocos2d: deallocing %@", self);
+        [tilesets_ release];
+        [layers_ release];
+        [filename_ release];
+        [currentString release];
+        [objectGroups_ release];
+        [properties_ release];
+        [tileProperties_ release];
+        [super dealloc];
+}
+
+- (void) parseXMLFile:(NSString *)xmlFilename
+{
+  NSURL *url = [NSURL fileURLWithPath:[CCFileUtils fullPathFromRelativePath:xmlFilename] ];
+  NSData *data = [NSData dataWithContentsOfURL:url];
+  NSXMLParser *parser = [[NSXMLParser alloc] initWithData:data];
+
+        // we'll do the parsing
+        [parser setDelegate:self];
+        [parser setShouldProcessNamespaces:NO];
+        [parser setShouldReportNamespacePrefixes:NO];
+        [parser setShouldResolveExternalEntities:NO];
+        [parser parse];
+
+        NSAssert1( ! [parser parserError], @"Error parsing file: %@.", xmlFilename );
+
+        [parser release];
+}
+
+// the XML parser calls here with all the elements
+-(void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict
+{       
+        if([elementName isEqualToString:@"map"]) {
+                NSString *version = [attributeDict valueForKey:@"version"];
+                if( ! [version isEqualToString:@"1.0"] )
+                        CCLOG(@"cocos2d: TMXFormat: Unsupported TMX version: %@", version);
+                NSString *orientationStr = [attributeDict valueForKey:@"orientation"];
+                if( [orientationStr isEqualToString:@"orthogonal"])
+                        orientation_ = CCTMXOrientationOrtho;
+                else if ( [orientationStr isEqualToString:@"isometric"])
+                        orientation_ = CCTMXOrientationIso;
+                else if( [orientationStr isEqualToString:@"hexagonal"])
+                        orientation_ = CCTMXOrientationHex;
+                else
+                        CCLOG(@"cocos2d: TMXFomat: Unsupported orientation: %@", orientation_);
+
+                mapSize_.width = [[attributeDict valueForKey:@"width"] intValue];
+                mapSize_.height = [[attributeDict valueForKey:@"height"] intValue];
+                tileSize_.width = [[attributeDict valueForKey:@"tilewidth"] intValue];
+                tileSize_.height = [[attributeDict valueForKey:@"tileheight"] intValue];
+
+                // The parent element is now "map"
+                parentElement = TMXPropertyMap;
+        } else if([elementName isEqualToString:@"tileset"]) {
+                
+                // If this is an external tileset then start parsing that
+                NSString *externalTilesetFilename = [attributeDict valueForKey:@"source"];
+                if (externalTilesetFilename) {
+                                // Tileset file will be relative to the map file. So we need to convert it to an absolute path
+                                NSString *dir = [filename_ stringByDeletingLastPathComponent];  // Directory of map file
+                                externalTilesetFilename = [dir stringByAppendingPathComponent:externalTilesetFilename]; // Append path to tileset file
+                                
+                                [self parseXMLFile:externalTilesetFilename];
+                } else {
+                                
+                        CCTMXTilesetInfo *tileset = [CCTMXTilesetInfo new];
+                        tileset.name = [attributeDict valueForKey:@"name"];
+                        tileset.firstGid = [[attributeDict valueForKey:@"firstgid"] intValue];
+                        tileset.spacing = [[attributeDict valueForKey:@"spacing"] intValue];
+                        tileset.margin = [[attributeDict valueForKey:@"margin"] intValue];
+                        CGSize s;
+                        s.width = [[attributeDict valueForKey:@"tilewidth"] intValue];
+                        s.height = [[attributeDict valueForKey:@"tileheight"] intValue];
+                        tileset.tileSize = s;
+                        
+                        [tilesets_ addObject:tileset];
+                        [tileset release];
+                }
+
+        }else if([elementName isEqualToString:@"tile"]){
+                CCTMXTilesetInfo* info = [tilesets_ lastObject];
+                NSMutableDictionary* dict = [NSMutableDictionary dictionaryWithCapacity:3];
+                parentGID_ =  [info firstGid] + [[attributeDict valueForKey:@"id"] intValue];
+                [tileProperties_ setObject:dict forKey:[NSNumber numberWithInt:parentGID_]];
+                
+                parentElement = TMXPropertyTile;
+                
+        }else if([elementName isEqualToString:@"layer"]) {
+                CCTMXLayerInfo *layer = [CCTMXLayerInfo new];
+                layer.name = [attributeDict valueForKey:@"name"];
+                
+                CGSize s;
+                s.width = [[attributeDict valueForKey:@"width"] intValue];
+                s.height = [[attributeDict valueForKey:@"height"] intValue];
+                layer.layerSize = s;
+                
+                layer.visible = ![[attributeDict valueForKey:@"visible"] isEqualToString:@"0"];
+                
+                if( [attributeDict valueForKey:@"opacity"] )
+                        layer.opacity = 255 * [[attributeDict valueForKey:@"opacity"] floatValue];
+                else
+                        layer.opacity = 255;
+                
+                int x = [[attributeDict valueForKey:@"x"] intValue];
+                int y = [[attributeDict valueForKey:@"y"] intValue];
+                layer.offset = ccp(x,y);
+                
+                [layers_ addObject:layer];
+                [layer release];
+                
+                // The parent element is now "layer"
+                parentElement = TMXPropertyLayer;
+        
+        } else if([elementName isEqualToString:@"objectgroup"]) {
+                
+                CCTMXObjectGroup *objectGroup = [[CCTMXObjectGroup alloc] init];
+                objectGroup.groupName = [attributeDict valueForKey:@"name"];
+                CGPoint positionOffset;
+                positionOffset.x = [[attributeDict valueForKey:@"x"] intValue] * tileSize_.width;
+                positionOffset.y = [[attributeDict valueForKey:@"y"] intValue] * tileSize_.height;
+                objectGroup.positionOffset = positionOffset;
+                
+                [objectGroups_ addObject:objectGroup];
+                [objectGroup release];
+                
+                // The parent element is now "objectgroup"
+                parentElement = TMXPropertyObjectGroup;
+                        
+        } else if([elementName isEqualToString:@"image"]) {
+
+                CCTMXTilesetInfo *tileset = [tilesets_ lastObject];
+                
+                // build full path
+                NSString *imagename = [attributeDict valueForKey:@"source"];            
+                NSString *path = [filename_ stringByDeletingLastPathComponent];         
+                tileset.sourceImage = [path stringByAppendingPathComponent:imagename];
+
+        } else if([elementName isEqualToString:@"data"]) {
+                NSString *encoding = [attributeDict valueForKey:@"encoding"];
+                NSString *compression = [attributeDict valueForKey:@"compression"];
+                
+                if( [encoding isEqualToString:@"base64"] ) {
+                        layerAttribs |= TMXLayerAttribBase64;
+                        storingCharacters = YES;
+                        
+                        if( [compression isEqualToString:@"gzip"] )
+                                layerAttribs |= TMXLayerAttribGzip;
+
+                        else if( [compression isEqualToString:@"zlib"] )
+                                layerAttribs |= TMXLayerAttribZlib;
+
+                        NSAssert( !compression || [compression isEqualToString:@"gzip"] || [compression isEqualToString:@"zlib"], @"TMX: unsupported compression method" );
+                }
+                
+                NSAssert( layerAttribs != TMXLayerAttribNone, @"TMX tile map: Only base64 and/or gzip/zlib maps are supported" );
+                
+        } else if([elementName isEqualToString:@"object"]) {
+        
+                CCTMXObjectGroup *objectGroup = [objectGroups_ lastObject];
+                
+                // The value for "type" was blank or not a valid class name
+                // Create an instance of TMXObjectInfo to store the object and its properties
+                NSMutableDictionary *dict = [[NSMutableDictionary alloc] initWithCapacity:5];
+                
+                // Set the name of the object to the value for "name"
+                [dict setValue:[attributeDict valueForKey:@"name"] forKey:@"name"];
+                
+                // Assign all the attributes as key/name pairs in the properties dictionary
+                [dict setValue:[attributeDict valueForKey:@"type"] forKey:@"type"];
+                int x = [[attributeDict valueForKey:@"x"] intValue] + objectGroup.positionOffset.x;
+                [dict setValue:[NSNumber numberWithInt:x] forKey:@"x"];
+                int y = [[attributeDict valueForKey:@"y"] intValue] + objectGroup.positionOffset.y;
+                // Correct y position. (Tiled uses Flipped, cocos2d uses Standard)
+                y = (mapSize_.height * tileSize_.height) - y - [[attributeDict valueForKey:@"height"] intValue];
+                [dict setValue:[NSNumber numberWithInt:y] forKey:@"y"];
+                [dict setValue:[attributeDict valueForKey:@"width"] forKey:@"width"];
+                [dict setValue:[attributeDict valueForKey:@"height"] forKey:@"height"];
+                
+                // Add the object to the objectGroup
+                [[objectGroup objects] addObject:dict];
+                [dict release];
+                
+                // The parent element is now "object"
+                parentElement = TMXPropertyObject;
+                
+        } else if([elementName isEqualToString:@"property"]) {
+        
+                if ( parentElement == TMXPropertyNone ) {
+                
+                        CCLOG( @"TMX tile map: Parent element is unsupported. Cannot add property named '%@' with value '%@'",
+                        [attributeDict valueForKey:@"name"], [attributeDict valueForKey:@"value"] );
+                        
+                } else if ( parentElement == TMXPropertyMap ) {
+                
+                        // The parent element is the map
+                        [properties_ setValue:[attributeDict valueForKey:@"value"] forKey:[attributeDict valueForKey:@"name"]];
+                        
+                } else if ( parentElement == TMXPropertyLayer ) {
+                
+                        // The parent element is the last layer
+                        CCTMXLayerInfo *layer = [layers_ lastObject];
+                        // Add the property to the layer
+                        [[layer properties] setValue:[attributeDict valueForKey:@"value"] forKey:[attributeDict valueForKey:@"name"]];
+                        
+                } else if ( parentElement == TMXPropertyObjectGroup ) {
+                        
+                        // The parent element is the last object group
+                        CCTMXObjectGroup *objectGroup = [objectGroups_ lastObject];
+                        [[objectGroup properties] setValue:[attributeDict valueForKey:@"value"] forKey:[attributeDict valueForKey:@"name"]];
+                        
+                } else if ( parentElement == TMXPropertyObject ) {
+                        
+                        // The parent element is the last object
+                        CCTMXObjectGroup *objectGroup = [objectGroups_ lastObject];
+                        NSMutableDictionary *dict = [[objectGroup objects] lastObject];
+                        
+                        NSString *propertyName = [attributeDict valueForKey:@"name"];
+                        NSString *propertyValue = [attributeDict valueForKey:@"value"];
+
+                        [dict setValue:propertyValue forKey:propertyName];
+                } else if ( parentElement == TMXPropertyTile ) {
+                        
+                        NSMutableDictionary* dict = [tileProperties_ objectForKey:[NSNumber numberWithInt:parentGID_]];
+                        NSString *propertyName = [attributeDict valueForKey:@"name"];
+                        NSString *propertyValue = [attributeDict valueForKey:@"value"];
+                        [dict setObject:propertyValue forKey:propertyName];
+                        
+                }
+        }
+}
+
+- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName
+{
+        int len = 0;
+
+        if([elementName isEqualToString:@"data"] && layerAttribs&TMXLayerAttribBase64) {
+                storingCharacters = NO;
+                
+                CCTMXLayerInfo *layer = [layers_ lastObject];
+                
+                unsigned char *buffer;
+                len = base64Decode((unsigned char*)[currentString UTF8String], (unsigned int) [currentString length], &buffer);
+                if( ! buffer ) {
+                        CCLOG(@"cocos2d: TiledMap: decode data error");
+                        return;
+                }
+                
+                if( layerAttribs & (TMXLayerAttribGzip | TMXLayerAttribZlib) ) {
+                        unsigned char *deflated;
+                        CGSize s = [layer layerSize];
+                        int sizeHint = s.width * s.height * sizeof(uint32_t);
+
+                        int inflatedLen = ccInflateMemoryWithHint(buffer, len, &deflated, sizeHint);
+                        NSAssert( inflatedLen == sizeHint, @"CCTMXXMLParser: Hint failed!");
+                        
+                        inflatedLen = (int)&inflatedLen; // XXX: to avoid warings in compiler
+
+                        free( buffer );
+                        
+                        if( ! deflated ) {
+                                CCLOG(@"cocos2d: TiledMap: inflate data error");
+                                return;
+                        }
+                        
+                        layer.tiles = (unsigned int*) deflated;
+                } else
+                        layer.tiles = (unsigned int*) buffer;
+                
+                [currentString setString:@""];
+                        
+        } else if ([elementName isEqualToString:@"map"]) {
+                // The map element has ended
+                parentElement = TMXPropertyNone;
+                
+        }       else if ([elementName isEqualToString:@"layer"]) {
+                // The layer element has ended
+                parentElement = TMXPropertyNone;
+                
+        } else if ([elementName isEqualToString:@"objectgroup"]) {
+                // The objectgroup element has ended
+                parentElement = TMXPropertyNone;
+                
+        } else if ([elementName isEqualToString:@"object"]) {
+                // The object element has ended
+                parentElement = TMXPropertyNone;
+        }
+}
+
+- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string
+{
+    if (storingCharacters)
+                [currentString appendString:string];
+}
+
+
+//
+// the level did not load, file not found, etc.
+//
+-(void)parser:(NSXMLParser *)parser parseErrorOccurred:(NSError *)parseError{
+        CCLOG(@"cocos2d: Error on XML Parse: %@", [parseError localizedDescription] );
+}
+
+@end