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/*
* An arbitrary cellular automata model using ncurses
* Copyright (C) 2018 Aiden Woodruff
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "updatemap.h"
void update_map (BOARD base_map, BOARD intermap, const unsigned int width, const unsigned int height, const unsigned int ruleint) {
cpyboard(intermap, base_map);
for (int i = 0, x = 0, y = 0, surround = 0; i < width * height; i++, surround = 0) {
x = i % width;
y = (i - x) / width;
/*
Where i is the current cell:
A1 | A2 | A3
----|----|----
B1 | i | B3
----|----|----
C1 | C2 | C3
*/
if (x > 0) {
if (board_getval_i(base_map, i - 1) == 1) ++surround; // B1
if (y > 0) {
if (board_getval_i(base_map, i - width - 1) == 1) ++surround; // A1
}
if (y < height - 1) {
if (board_getval_i(base_map, i - 1 + width) == 1) ++surround; // C1
}
}
if (x < width - 1) {
if (board_getval_i(base_map, i + 1) == 1) ++surround; // B3
if (y > 0) {
if (board_getval_i(base_map, i + 1 - width) == 1) ++surround; // A3
}
if (y < height - 1) {
if (board_getval_i(base_map, i + 1 + width) == 1) ++surround; // C3
}
}
if (y > 0) {
if (board_getval_i(base_map, i - width) == 1) ++surround;
}
if (y < height - 1) {
if (board_getval_i(base_map, i + width) == 1) ++surround;
}
switch (board_getval_i(base_map, i)) {
case 0:
if (has(ruleint, 1 << surround)) {
board_setval_i(intermap, i, 1);
}
break;
case 1:
if (!has(ruleint, 1 << (surround + 9))) {
board_setval_i(intermap, i, 0);
}
}
}
// Rewrite map
cpyboard(base_map, intermap);
return base_map;
}
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