SandPile/main.cpp at main · PressStart9/SandPile · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
#include <string>

#include "Cell.h"
#include "FileWorker.h"
#include "GrowingDeque.hpp"
#include "GrowingDequeMatrix.hpp"


bool ComputePending(GrowingDequeMatrix<Cell>& field) {
  bool has_changes = false;
  for (size_t i = 0; i < field.size_x(); ++i) {
    for (size_t j = 0; j < field.size_y(); ++j) {
      if (field[i][j].pending == 0) {
        continue;
      }
      has_changes = true;
      field[i][j].count = static_cast<int16_t>(field[i][j].count) + field[i][j].pending;
      field[i][j].pending = 0;
    }
  }
  return has_changes;
}

void Step(GrowingDequeMatrix<Cell>& field) {
  size_t offset_x = 0;
  size_t offset_y = 0;
  for (size_t i = 0; i < field.size_x(); ++i) {
    for (size_t j = 0; j < field.size_y(); ++j) {
      size_t x = offset_x + i;
      size_t y = offset_y + j;
      if (field[x][y].count < 4) {
        continue;
      }

      field[x][y].pending -= 4;
      if (i == field.size_x() - 1) {
        field.extend_x_back();
      }
      if (i == 0 && offset_x == 0) {
        ++offset_x;
        ++x;
        field.extend_x_front();
      }
      if (j == field.size_y() - 1) {
        field.extend_y_back();
      }
      if (j == 0 && offset_y == 0) {
        ++offset_y;
        ++y;
        field.extend_y_front();
      }

      ++field[x][y + 1].pending;
      ++field[x][y - 1].pending;
      ++field[x + 1][y].pending;
      ++field[x - 1][y].pending;
    }
  }
}

void Life(const std::string& outputFilepath, GrowingDequeMatrix<Cell>& field, uint32_t iterations, uint32_t frequency) {
  for (uint32_t i = 0; i < iterations; ++i) {
    Step(field);
    bool has_changes = ComputePending(field);

    if (i % frequency == 0 || !has_changes) {
      FileWorker::save_image(outputFilepath + std::to_string(i) + ".bmp", field);

      // for (size_t a = 0; a < field.size_x(); ++a) {
      //   for (size_t b = 0; b < field.size_y(); ++b) {
      //     std::cout << field[a][b].count << ' ';
      //   } std::cout << '\n';
      // } std::cout << "\n\n";
      if (!has_changes) {
        break;
      }
    }
  }
}

void ParseCommandArguments(const int argc, char* argv[], uint32_t& iterations, uint32_t& frequency, std::string& inputFilepath, std::string& outputFilepath) {
  for (int i = 1; i < argc; ++i) {
    std::string curr_arg = argv[i];
    if (curr_arg.size() > 1 && curr_arg[0] == '-') {
      if (curr_arg == "-m") {
        ++i;
        iterations = static_cast<uint32_t>(std::stoul(argv[i]));
      } else if (curr_arg == "-f") {
        ++i;
        frequency = static_cast<uint32_t>(std::stoul(argv[i]));
      } else if (curr_arg == "-i") {
        ++i;
        inputFilepath = argv[i];
      } else if (curr_arg == "-o") {
        ++i;
        outputFilepath = argv[i];
      } else if (curr_arg.starts_with("--max-iter=")) {
        iterations = std::stoul(curr_arg.substr(curr_arg.find('=') + 1));
      } else if (curr_arg.starts_with("--freq=")) {
        frequency = std::stoul(curr_arg.substr(curr_arg.find('=') + 1));
      } else if (curr_arg.starts_with("--input=")) {
        inputFilepath = curr_arg.substr(curr_arg.find('=') + 1);
      } else if (curr_arg.starts_with("--output=")) {
        outputFilepath = curr_arg.substr(curr_arg.find('=') + 1);
      } else {
        throw std::runtime_error("No such argument: " + curr_arg);
        return;
      }
    } else {
      throw std::runtime_error("Argument not specified: " + curr_arg);
      return;
    }
  }
}

int main(int argc, char* argv[]) {
  if (argc < 2) {
    throw std::runtime_error("File not specified.");
    return 1;
  }

  uint32_t iterations = INT_MAX;  // Max value
  uint32_t frequency = 1;  // Max value
  std::string inputFilepath;
  std::string outputFilepath;

  ParseCommandArguments(argc, argv, iterations, frequency, inputFilepath, outputFilepath);

  GrowingDequeMatrix<Cell> field;

  FileWorker::load_image(inputFilepath, field);
  FileWorker::save_image(outputFilepath + "test.bmp", field);

  Life(outputFilepath, field, iterations, frequency);

  return 0;
}