You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
84 lines
2.3 KiB
84 lines
2.3 KiB
#include "field.h"
|
|
#include "sim.h"
|
|
|
|
static Glyph const indexed_glyphs[] = {
|
|
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd',
|
|
'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r',
|
|
's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '.', '*', ':', ';', '#',
|
|
};
|
|
|
|
enum { Glyphs_array_num = sizeof indexed_glyphs };
|
|
|
|
static inline Usz index_of_glyph(Glyph c) {
|
|
for (Usz i = 0; i < Glyphs_array_num; ++i) {
|
|
if (indexed_glyphs[i] == c)
|
|
return i;
|
|
}
|
|
return SIZE_MAX;
|
|
}
|
|
|
|
static inline Glyph glyph_lowered(Glyph c) {
|
|
return (c >= 'A' && c <= 'Z') ? (char)(c - ('a' - 'A')) : c;
|
|
}
|
|
|
|
// Always returns 0 through (sizeof indexed_glyphs) - 1, and works on
|
|
// capitalized glyphs as well. The index of the lower-cased glyph is returned
|
|
// if the glyph is capitalized.
|
|
static inline Usz semantic_index_of_glyph(Glyph c) {
|
|
Glyph c0 = glyph_lowered(c);
|
|
for (Usz i = 0; i < Glyphs_array_num; ++i) {
|
|
if (indexed_glyphs[i] == c0)
|
|
return i;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static inline Glyph glyphs_sum(Glyph a, Glyph b) {
|
|
Usz ia = semantic_index_of_glyph(a);
|
|
Usz ib = semantic_index_of_glyph(b);
|
|
return indexed_glyphs[(ia + ib) % Glyphs_array_num];
|
|
}
|
|
|
|
static inline Glyph glyphs_mod(Glyph a, Glyph b) {
|
|
Usz ia = semantic_index_of_glyph(a);
|
|
Usz ib = semantic_index_of_glyph(b);
|
|
return indexed_glyphs[ib == 0 ? 0 : (ia % ib)];
|
|
}
|
|
|
|
static inline void act_a(Field* f, Usz y, Usz x) {
|
|
Glyph inp0 = field_peek_relative(f, y, x, 0, 1);
|
|
Glyph inp1 = field_peek_relative(f, y, x, 0, 2);
|
|
if (inp0 != '.' && inp1 != '.') {
|
|
Glyph t = glyphs_sum(inp0, inp1);
|
|
field_poke_relative(f, y, x, 1, 0, t);
|
|
}
|
|
}
|
|
|
|
static inline void act_m(Field* f, Usz y, Usz x) {
|
|
Glyph inp0 = field_peek_relative(f, y, x, 0, 1);
|
|
Glyph inp1 = field_peek_relative(f, y, x, 0, 2);
|
|
if (inp0 != '.' && inp1 != '.') {
|
|
Glyph t = glyphs_mod(inp0, inp1);
|
|
field_poke_relative(f, y, x, 1, 0, t);
|
|
}
|
|
}
|
|
|
|
void orca_run(Field* f) {
|
|
Usz ny = f->height;
|
|
Usz nx = f->width;
|
|
Glyph* f_buffer = f->buffer;
|
|
for (Usz iy = 0; iy < ny; ++iy) {
|
|
Glyph* row = f_buffer + iy * nx;
|
|
for (Usz ix = 0; ix < nx; ++ix) {
|
|
Glyph c = row[ix];
|
|
switch (c) {
|
|
case 'a':
|
|
act_a(f, iy, ix);
|
|
break;
|
|
case 'm':
|
|
act_m(f, iy, ix);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|