object.cpp

基于SDL的图形化贪心算法演示,支持节点的拖放

#include "Object.h"
#include "ShortPath.h"

#include <deque>
using namespace std;

void MapNode::Draw()
{
	static SDL_Surface* text;


	if( m_bFocus )
		g_gui->Blit( g_redcircle, m_x, m_y );
	
	else 
		g_gui->Blit( g_blackcircle, m_x, m_y );

	text = TTF_RenderText_Shaded( g_gui->GetFont(0), m_Text, BLACK, WHITE );

	g_gui->Blit( text, (g_blackcircle->w - text->w) / 2 + m_x,(g_blackcircle->h - text->h) / 2 + m_y );

	SDL_FreeSurface( text );


	for( int i = 0; i< deque_line.size(); ++i )
	{
		deque_line.at(i)->Draw();
	}

}

int MapNode::GetLengthToNode( int index )
{
	MapNode* node = (*p_NodeDeque)[index];

	for( int i = 0; i< deque_line.size(); ++i )
	{

		if( deque_line[i]->GetToNode() == node )
		{
			return deque_line[i]->Legnth();
		}
	}

	return MAX_NUM;
}