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Fixed a bug in loading the heightmap and added comments

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This commit is contained in:
Steffen Fündgens 2014-11-04 12:08:47 +01:00
parent 925eb62831
commit 5d2acc0e53
2 changed files with 11 additions and 13 deletions
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18
terrain.cc
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@ -11,17 +11,17 @@ void Terrain::load() {
std::ifstream terrain_png(this->filePath);
unsigned int width, height, rowNum, columnNum;
terrain_png.seekg(16);
terrain_png.read((char *)&width, 4);
terrain_png.read((char *)&height, 4);
width = ntohl(width);
height = ntohl(height);
terrain_png.seekg(16); //skip part of the header
terrain_png.read((char *)&width, 4); //read width
terrain_png.read((char *)&height, 4); //read height
width = ntohl(width); //convert from host to network byte order
height = ntohl(height);
heightmap = new unsigned int*[height];
for(rowNum=0; rowNum<height; rowNum++){
heightmap[columnNum] = new unsigned int[width];
heightmap = new unsigned int*[height]; //initialize the heightmap
for(rowNum=0; rowNum<height; rowNum++){ //read in the heightmap
heightmap[rowNum] = new unsigned int[width];
for(columnNum=0; columnNum<width; columnNum++){
terrain_png.read((char *)&heightmap[columnNum][rowNum], 1);
terrain_png.read((char *)&heightmap[rowNum][columnNum], 1);
}
}

6
terrain.hh
View File

@ -4,9 +4,7 @@
#include <string>
#include "texture.hh"
#include <fstream>
#include <iostream>
#include "png.h"
//#include <winsock.h> //on windows
//#include <winsock.h> //on Windows
#include <netinet/in.h> //on Unix
class Terrain {
@ -19,7 +17,7 @@ class Terrain {
float friction;
Texture texture;
std::string filePath;
unsigned int** heightmap;
unsigned int** heightmap; //can be accessed like 'unsigned int[][]'
};
#endif