minetestmapper/PixelAttributes.cpp
2012-09-01 14:36:14 +02:00

56 lines
1.2 KiB
C++

/*
* =====================================================================
* Version: 1.0
* Created: 25.08.2012 10:55:27
* Author: Miroslav Bendík
* Company: LinuxOS.sk
* =====================================================================
*/
#include <cstdlib>
#include <cstring>
#include "PixelAttributes.h"
using namespace std;
PixelAttributes::PixelAttributes():
m_width(0)
{
for (size_t i = 0; i < BlockCount; ++i) {
m_pixelAttributes[i] = 0;
}
}
PixelAttributes::~PixelAttributes()
{
freeAttributes();
}
void PixelAttributes::setWidth(int width)
{
freeAttributes();
m_width = width;
for (size_t i = 0; i < BlockCount; ++i) {
m_pixelAttributes[i] = new PixelAttribute[m_width + 1];
}
}
void PixelAttributes::scroll()
{
memcpy(m_pixelAttributes[FirstLine], m_pixelAttributes[LastLine], (m_width + 1) * sizeof(PixelAttribute));
for (size_t i = 1; i < BlockCount - 1; ++i) {
memcpy(m_pixelAttributes[i], m_pixelAttributes[EmptyLine], (m_width + 1) * sizeof(PixelAttribute));
}
}
void PixelAttributes::freeAttributes()
{
for (size_t i = 0; i < BlockCount; ++i) {
if (m_pixelAttributes[i] != 0) {
delete[] m_pixelAttributes[i];
m_pixelAttributes[i] = 0;
}
}
}