#include "LightProps.h"
#include "Parser.h"
#include "Texture.h"


//=====================================================================================================================================
// load                                                                                                                               =
//=====================================================================================================================================
bool LightProps::load( const char* filename )
{
Scanner scanner;
	if( !scanner.loadFile( filename ) ) return false;

	const Scanner::Token* token;

	do
	{
		token = &scanner.getNextToken();

		//** DIFFUSE_COL **
		if( token->getCode() == Scanner::TC_IDENTIFIER && !strcmp( token->getValue().getString(), "DIFFUSE_COLOR" ) )
		{
			Parser::parseArrOfNumbers<float>( scanner, true, true, 3, &diffuseCol[0] );
		}
		//** SPECULAR_COL **
		else if( token->getCode() == Scanner::TC_IDENTIFIER && !strcmp( token->getValue().getString(), "SPECULAR_COLOR" ) )
		{
			Parser::parseArrOfNumbers<float>( scanner, true, true, 3, &specularCol[0] );
		}
		//** RADIUS **
		else if( token->getCode() == Scanner::TC_IDENTIFIER && !strcmp( token->getValue().getString(), "RADIUS" ) )
		{
			token = &scanner.getNextToken();
			if( token->getCode() != Scanner::TC_NUMBER )
			{
				PARSE_ERR_EXPECTED( "number" );
				return false;
			}

			radius = (token->getDataType() == Scanner::DT_FLOAT) ? token->getValue().getFloat() : float(token->getValue().getInt());
		}
		//** CASTS_SHADOW **
		else if( token->getCode() == Scanner::TC_IDENTIFIER && !strcmp( token->getValue().getString(), "CASTS_SHADOW" ) )
		{
			token = &scanner.getNextToken();
			if( token->getCode() != Scanner::TC_NUMBER || token->getDataType() != Scanner::DT_INT )
			{
				PARSE_ERR_EXPECTED( "number" );
				return false;
			}

			castsShadow_ = token->getValue().getInt();
		}
		//** DISTANCE **
		else if( token->getCode() == Scanner::TC_IDENTIFIER && !strcmp( token->getValue().getString(), "DISTANCE" ) )
		{
			token = &scanner.getNextToken();
			if( token->getCode() != Scanner::TC_NUMBER )
			{
				PARSE_ERR_EXPECTED( "number" );
				return false;
			}

			distance = (token->getDataType() == Scanner::DT_FLOAT) ? token->getValue().getFloat() : float(token->getValue().getInt());
		}
		//** FOV_X **
		else if( token->getCode() == Scanner::TC_IDENTIFIER && !strcmp( token->getValue().getString(), "FOV_X" ) )
		{
			token = &scanner.getNextToken();
			if( token->getCode() != Scanner::TC_NUMBER )
			{
				PARSE_ERR_EXPECTED( "number" );
				return false;
			}

			fovX = (token->getDataType() == Scanner::DT_FLOAT) ? token->getValue().getFloat() : float(token->getValue().getInt());
		}
		//** FOV_Y **
		else if( token->getCode() == Scanner::TC_IDENTIFIER && !strcmp( token->getValue().getString(), "FOV_Y" ) )
		{
			token = &scanner.getNextToken();
			if( token->getCode() != Scanner::TC_NUMBER )
			{
				PARSE_ERR_EXPECTED( "number" );
				return false;
			}

			fovY = (token->getDataType() == Scanner::DT_FLOAT) ? token->getValue().getFloat() : float(token->getValue().getInt());
		}
		//** TEXTURE **
		else if( token->getCode() == Scanner::TC_IDENTIFIER && !strcmp( token->getValue().getString(), "TEXTURE" ) )
		{
			token = &scanner.getNextToken();
			if( token->getCode() != Scanner::TC_STRING )
			{
				PARSE_ERR_EXPECTED( "string" );
				return false;
			}
				
			texture = Rsrc::textures.load( token->getValue().getString() );
			texture->texParameter( GL_TEXTURE_MAX_ANISOTROPY_EXT, 0 );
		}
		// end of file
		else if( token->getCode() == Scanner::TC_EOF )
		{
			break;
		}
		// other crap
		else
		{
			PARSE_ERR_UNEXPECTED();
			return false;
		}

	}while( true );
	
	return true;
}


//=====================================================================================================================================
// unload                                                                                                                             =
//=====================================================================================================================================
void LightProps::unload()
{
	if( texture != NULL )
		Rsrc::textures.unload( texture );
}