1 | /* |
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2 | orxonox - the future of 3D-vertical-scrollers |
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3 | |
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4 | Copyright (C) 2004 orx |
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5 | |
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6 | This program is free software; you can redistribute it and/or modify |
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7 | it under the terms of the GNU General Public License as published by |
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8 | the Free Software Foundation; either version 2, or (at your option) |
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9 | any later version. |
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10 | |
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11 | ### File Specific: |
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12 | main-programmer: Benjamin Wuest |
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13 | co-programmer: ... |
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14 | */ |
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15 | |
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16 | |
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17 | /* this is for debug output. It just says, that all calls to PRINT() belong to the DEBUG_MODULE_NETWORK module |
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18 | For more information refere to https://www.orxonox.net/cgi-bin/trac.cgi/wiki/DebugOutput |
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19 | */ |
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20 | #define DEBUG_MODULE_NETWORK |
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21 | |
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22 | /* include your own header */ |
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23 | #include "converter.h" |
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24 | |
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25 | |
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26 | /* using namespace std is default, this needs to be here */ |
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27 | using namespace std; |
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28 | |
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29 | /*! |
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30 | * Standard constructor |
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31 | */ |
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32 | Converter::Converter() |
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33 | { |
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34 | /* set the class id for the base object */ |
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35 | //this->setClassID(CL_ENTITY_MANAGER, "EntityManager"); |
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36 | } |
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37 | |
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38 | /*! |
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39 | * Standard destructor |
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40 | */ |
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41 | Converter::~Converter() |
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42 | { |
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43 | } |
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44 | |
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45 | const int sgnadd = 128; // = 2^7 |
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46 | |
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47 | /*! |
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48 | * Converts an int into a byte-array |
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49 | * @remarks: The int is stored in big-endian |
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50 | * @param x: The int which is to convert |
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51 | * @return: A byte-array that accords the given int value |
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52 | */ |
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53 | byte* Converter::intToByteArray(int x) |
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54 | { |
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55 | const int mod = 256; // = 2^8 |
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56 | |
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57 | |
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58 | byte* result = new byte[INTSIZE]; |
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59 | int sgn; |
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60 | if (x >= 0) |
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61 | sgn = 1; |
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62 | else |
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63 | { |
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64 | sgn = -1; |
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65 | x = -x; |
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66 | } |
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67 | |
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68 | for (int i = 0; i < INTSIZE; i++) |
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69 | { |
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70 | result[i] = x % mod; |
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71 | x /= mod; |
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72 | } |
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73 | |
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74 | if (sgn == -1) |
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75 | result[INTSIZE - 1] += sgnadd; |
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76 | |
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77 | |
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78 | return result; |
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79 | } |
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80 | |
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81 | /*! |
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82 | * Converts a byte-array into an int |
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83 | * @param a: The byte-array which is to convert |
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84 | * @return: An int that accords the given byte-array |
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85 | */ |
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86 | int Converter::byteArrayToInt(byte* a) |
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87 | { |
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88 | int mult = 1; |
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89 | const int step = 256; // = 2 ^ 8 |
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90 | int result = 0; |
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91 | for (int i = 0; i < INTSIZE - 1; i++) |
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92 | { |
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93 | result += a[i] * mult; |
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94 | mult *= step; |
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95 | } |
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96 | |
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97 | printf("tara: %i", result); |
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98 | |
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99 | if (a[INTSIZE - 1] >= sgnadd) |
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100 | { |
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101 | result += (a[INTSIZE - 1] - sgnadd) * mult; |
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102 | result *= -1; |
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103 | } |
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104 | else |
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105 | result += a[INTSIZE - 1] * mult; |
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106 | |
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107 | return result; |
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108 | } |
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