created skeletal implementation of png to xml converter

CMakeLists.txt

@@ -127,3 +127,10 @@ SET (LIBRARIES ${LIBRARIES} ${CMAKE_SOURCE_DIR}/extern/bullet/build/src/BulletSo
 
 ADD_EXECUTABLE(${CMAKE_PROJECT_NAME} ${SOURCE_FILES} ${HEADER_FILES} ${SHADER_FILES} ${README_FILES})
 TARGET_LINK_LIBRARIES(${CMAKE_PROJECT_NAME} ${LIBRARIES})
+
+FILE(GLOB_RECURSE SOURCE_FILES_CONV "${CMAKE_SOURCE_DIR}/converter/*.cc")
+SET(SOURCE_FILES_CONV ${SOURCE_FILES_CONV})
+
+FILE(GLOB_RECURSE HEADER_FILES_CONV "${CMAKE_SOURCE_DIR}/converter/*.hh")
+SET(HEADER_FILES_CONV ${HEADER_FILES})
+ADD_EXECUTABLE(converter ${SOURCE_FILES_CONV} ${HEADER_FILES_CONV})

converter/converter.cc

@@ -0,0 +1,28 @@
+#include "converter.hh"
+
+Converter::Converter(){
+}
+
+Converter::~Converter(){
+}
+
+void Converter::updateComposition(unsigned int type, unsigned int idG, unsigned int idB, unsigned int posX, unsigned int posZ){
+    //TODO
+}
+
+
+std::vector<unsigned int> Converter::newComposition(unsigned int type, unsigned int posX, unsigned int posZ){
+    //TODO
+    std::vector<unsigned int> ret = {0,0};
+    return ret;
+}
+
+void Converter::deleteComposition(unsigned int idG, unsigned int idB){
+    //TODO
+}
+
+
+
+void Converter::newObject(unsigned int type, unsigned int idG, unsigned int idB, unsigned int posX, unsigned int posZ){
+    //TODO
+}

converter/converter.hh

@@ -0,0 +1,16 @@
+#ifndef CONVERTER_INCLUDED
+#define CONVERTER_INCLUDED
+#include <vector>
+
+class Converter {
+    public:
+        Converter();
+        ~Converter();
+        void updateComposition(unsigned int type, unsigned int idG, unsigned int idB, unsigned int posX, unsigned int posZ);
+        std::vector<unsigned int> newComposition(unsigned int type, unsigned int posX, unsigned int posZ);
+	    void deleteComposition(unsigned int idG, unsigned int idB);
+
+    private:
+        void newObject(unsigned int type, unsigned int idG, unsigned int idB, unsigned int posX, unsigned int posZ);
+};
+#endif

converter/main.cc

@@ -0,0 +1,69 @@
+#include "lodepng.h"
+#include <string>
+#include "converter.hh"
+#include <vector>
+#include <iostream>
+
+//global variable level:
+unsigned int level;
+
+int main( int argc, char *argv[] ){
+    //TODO: always update this:
+    unsigned int numLevels=1;
+    Converter conv;
+    //iterate over all Levels
+    for (level=1; level<=numLevels; level++){
+        bool idFound[256][256];
+        for (int i=0; i<256; i++){
+            for (int j=0; j<256; j++){
+                idFound[i][j] = false;
+            }
+        }
+        //read the setup png
+        char levelChar[2];
+        sprintf (levelChar,"%i", level);
+        std::string levelString = levelChar;
+        std::string filePath = "../Levels/setupLvl" + levelString + ".png";
+//printf("%s", filePath);
+        std::vector<unsigned char> image; //the raw pixels
+        unsigned int width, height;
+        unsigned error = lodepng::decode(image, width, height, filePath);
+        if (error) {
+            std::cout << "decoder error " << error << ": " << lodepng_error_text(error) << std::endl;
+        }
+        //iterate over all pixels of the image
+        for(unsigned int rowNum = 0; rowNum < height; rowNum++){
+            for(unsigned int columnNum = 0; columnNum < width; columnNum++){
+                unsigned int pixel = (rowNum*width+columnNum)*4;
+                //if there is a composition here, adjust the xml and image
+                if(image[pixel]!=0){
+                    if(image[pixel+1]==0 && image[pixel+2]==0){
+                        std::vector<unsigned int> temp;
+                        temp = conv.newComposition(image[pixel], rowNum, columnNum);
+                        idFound[temp[0]][temp[1]] = true;
+                        image[pixel+1] = temp[0];
+                        image[pixel+2] = temp[1];
+                    }else{
+                        conv.updateComposition(image[pixel], image[pixel+1], image[pixel+2], rowNum, columnNum);
+                        idFound[image[pixel+1]][image[pixel+2]] = true;
+                    }
+                }
+            }
+        }
+        //write ids back to the setup png
+        error = lodepng::encode(filePath, image, width, height);
+        if(error) {
+            std::cout << "encoder error " << error << ": "<< lodepng_error_text(error) << std::endl;
+        }
+        //delete compositions that were not in the png anymore
+        for (int i=0; i<256; i++){
+            for (int j=0; j<256; j++){
+                if (idFound[i][j] == false){
+                    //TODO if (exists)?
+                    conv.deleteComposition(i,j);
+                }
+            }
+        }
+    }
+}
+

level.cc

@@ -4,7 +4,7 @@
 
 Level::Level(std::string filePath){
     this->filePath = filePath;
-    this->terrain = Terrain(filePath + "/terrain");
+    this->terrain = Terrain(filePath + "/terrain"); //TODO change this, fileSystem got reworked
     skyboxSize = 50.0f;
 }