//
//  SVGLevelBuilder.h
//
//  Created by Tom Elders on 17/07/2010.
//

#import <Foundation/Foundation.h>
#import "SpaceManager.h"

@interface SVGLevelBuilder : NSObject {

    SpaceManager    * spaceMgr;
    NSMutableString * currentNodeGroup;
    NSMutableString * currentNode;
    NSXMLParser     * parser;
    CGPoint           polyStartPoint;
    NSMutableArray  * landscapeNodes;

}

@property (nonatomic, retain) SpaceManager * spaceMgr;

- (id) levelWithSVGFile:(NSString *)fileName inSpace:(SpaceManager *)pSpace;

- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict;
- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName;
- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string;

- (void) buildLandscapeNode:(NSString *)pointData;

@end


//
//  SVGLevelBuilder.m
//
//  Created by Tom Elders on 17/07/2010.
//

#import "SVGLevelBuilder.h"


@implementation SVGLevelBuilder

@synthesize spaceMgr;

- (id) levelWithSVGFile:(NSString *)fileName inSpace:(SpaceManager *)pSpace
{

    if ( (self = [super init]) ) {

        NSLog(@"SVG Level Builder Initiated.");

        spaceMgr = pSpace;

        // crate the parser
        NSString *filePath = [[NSBundle mainBundle] pathForResource:fileName ofType:@"svg"];

        parser = [[NSXMLParser alloc] initWithData:[NSData dataWithContentsOfFile:filePath]];
        [parser setDelegate:self];

        [parser parse];

    }

    return self;

}

- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict
{

    NSLog(@"Found Element -----> %@", [attributeDict valueForKey:@"id"]);

    // Determine which group we're in
    if ( [(NSString *) [attributeDict valueForKey:@"id"] isEqualToString:@"Landscape"] ) {
        currentNodeGroup = [NSMutableString stringWithString:[attributeDict valueForKey:@"id"]];
    }else{
        NSLog(@"Current Node Group: %@", (NSString *)[attributeDict valueForKey:@"id"]);
        // do nothing
    }

    // Build Landscape
    if([elementName isEqualToString:@"polygon"] && [currentNodeGroup isEqualToString:@"Landscape"]){
        [self buildLandscapeNode:(NSString *)[attributeDict objectForKey:@"points"]];
    }



}

- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName
{

}


- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string
{

}

- (void) buildLandscapeNode:(NSString *)pointData
{
    NSLog(@"Point data: %@", pointData);
    NSArray *points = [pointData componentsSeparatedByString:@" "];

    for(int i = 0; i < [points count] - 1; i++){

        NSArray *coords = [(NSString *)[points objectAtIndex:i] componentsSeparatedByString:@","];
        // get the XY data as floats
        float xVal = [(NSString *)[coords objectAtIndex:0] floatValue];
        float yVal = 320 - [(NSString *)[coords objectAtIndex:1] floatValue];

        if (i == 0) {
            polyStartPoint = ccp(xVal, yVal);
        }else{
            CGPoint polyEndPoint = ccp(xVal, yVal);
            cpShape *segment = [spaceMgr addSegmentAtWorldAnchor:polyStartPoint toWorldAnchor:polyEndPoint mass:STATIC_MASS radius:1];
            segment->e = 0.8;
            segment->u = 1;
            NSLog(@"SEGMENT CREATED AT %f,%f -- %f,%f", polyStartPoint.x, polyStartPoint.y, polyEndPoint.x, polyEndPoint.y);
            polyStartPoint = polyEndPoint;
        }

    }
}


@end