ref: fcd848ee4101280c7c5e4cf6c65a76de27bea342
dir: /sim.c/
#include "gbuffer.h"
#include "mark.h"
#include "sim.h"
//////// Utilities
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 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);
if (c0 == '.')
return 0;
for (Usz i = 0; i < Glyphs_array_num; ++i) {
if (indexed_glyphs[i] == c0)
return i;
}
return 0;
}
static inline Glyph glyphs_add(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 bool oper_has_neighboring_bang(Gbuffer gbuf, Usz h, Usz w, Usz y,
Usz x) {
return gbuffer_peek_relative(gbuf, h, w, y, x, 0, 1) == '*' ||
gbuffer_peek_relative(gbuf, h, w, y, x, 0, -1) == '*' ||
gbuffer_peek_relative(gbuf, h, w, y, x, 1, 0) == '*' ||
gbuffer_peek_relative(gbuf, h, w, y, x, -1, 0) == '*';
}
static inline void oper_move_relative_or_explode(Gbuffer gbuf, Mbuffer mbuf,
Usz height, Usz width,
Glyph moved, Usz y, Usz x,
Isz delta_y, Isz delta_x) {
Isz y0 = (Isz)y + delta_y;
Isz x0 = (Isz)x + delta_x;
if (y0 >= (Isz)height || x0 >= (Isz)width || y0 < 0 || x0 < 0) {
gbuf[y * width + x] = '*';
return;
}
Glyph* at_dest = gbuf + (Usz)y0 * width + (Usz)x0;
if (*at_dest != '.') {
gbuf[y * width + x] = '*';
mbuffer_poke_flags_or(mbuf, height, width, y, x, Mark_flag_sleep);
return;
}
*at_dest = moved;
mbuffer_poke_flags_or(mbuf, height, width, (Usz)y0, (Usz)x0, Mark_flag_sleep);
gbuf[y * width + x] = '.';
}
#define ORCA_EXPAND_SOLO_OPER_CHARS(_oper_char, _oper_name) \
Orca_oper_char_##_oper_name = _oper_char,
#define ORCA_EXPAND_DUAL_OPER_CHARS(_upper_oper_char, _lower_oper_char, \
_oper_name) \
Orca_oper_upper_char_##_oper_name = _upper_oper_char, \
Orca_oper_lower_char_##_oper_name = _lower_oper_char,
#define ORCA_DEFINE_OPER_CHARS(_solo_defs, _dual_defs) \
enum Orca_oper_chars { \
_solo_defs(ORCA_EXPAND_SOLO_OPER_CHARS) \
_dual_defs(ORCA_EXPAND_DUAL_OPER_CHARS) \
};
#define ORCA_DECLARE_OPERATORS(_solo_defs, _dual_defs) \
ORCA_DEFINE_OPER_CHARS(_solo_defs, _dual_defs)
#define OPER_IGNORE_COMMON_ARGS() \
(void)gbuffer; \
(void)mbuffer; \
(void)height; \
(void)width; \
(void)y; \
(void)x;
#define BEGIN_SOLO_PHASE_0(_oper_name) \
static inline void oper_phase0_##_oper_name( \
Gbuffer const gbuffer, Mbuffer const mbuffer, Usz const height, \
Usz const width, Usz const y, Usz const x, U8 const cell_flags) { \
OPER_IGNORE_COMMON_ARGS() \
(void)cell_flags; \
enum { This_oper_char = Orca_oper_char_##_oper_name };
#define BEGIN_SOLO_PHASE_1(_oper_name) \
static inline void oper_phase1_##_oper_name( \
Gbuffer const gbuffer, Mbuffer const mbuffer, Usz const height, \
Usz const width, Usz const y, Usz const x) { \
OPER_IGNORE_COMMON_ARGS() \
enum { This_oper_char = Orca_oper_char_##_oper_name };
#define BEGIN_DUAL_PHASE_0(_oper_name) \
static inline void oper_phase0_##_oper_name( \
Gbuffer const gbuffer, Mbuffer const mbuffer, Usz const height, \
Usz const width, Usz const y, Usz const x, U8 const cell_flags, \
Glyph const This_oper_char) { \
OPER_IGNORE_COMMON_ARGS() \
(void)cell_flags; \
bool const Dual_is_uppercase = \
Orca_oper_upper_char_##_oper_name == This_oper_char; \
(void)Dual_is_uppercase;
#define BEGIN_DUAL_PHASE_1(_oper_name) \
static inline void oper_phase1_##_oper_name( \
Gbuffer const gbuffer, Mbuffer const mbuffer, Usz const height, \
Usz const width, Usz const y, Usz const x, Glyph const This_oper_char) { \
OPER_IGNORE_COMMON_ARGS() \
bool const Dual_is_uppercase = \
Orca_oper_upper_char_##_oper_name == This_oper_char; \
(void)Dual_is_uppercase;
#define END_PHASE }
#define PEEK(_delta_y, _delta_x) \
gbuffer_peek_relative(gbuffer, height, width, y, x, _delta_y, _delta_x)
#define POKE(_delta_y, _delta_x, _glyph) \
gbuffer_poke_relative(gbuffer, height, width, y, x, _delta_y, _delta_x, \
_glyph)
#define BECOME(_glyph) \
gbuffer_poke(gbuffer, height, width, y, x, This_oper_char)
#define OPER_REQUIRE_BANG() \
if (!oper_has_neighboring_bang(gbuffer, height, width, y, x)) \
return
#define LOCKING Mark_flag_lock
#define NONLOCKING Mark_flag_none
#define HASTE Mark_flag_haste_input
#define REALIZE_DUAL \
bool const Dual_is_active = \
Dual_is_uppercase | \
oper_has_neighboring_bang(gbuffer, height, width, y, x);
#define BEGIN_DUAL_PORTS \
{ \
bool const Oper_ports_enabled = Dual_is_active;
#define STOP_IF_DUAL_INACTIVE \
if (!Dual_is_active) \
return
#define I_PORT(_delta_y, _delta_x, _flags) \
mbuffer_poke_relative_flags_or( \
mbuffer, height, width, y, x, _delta_y, _delta_x, \
Mark_flag_input | ((_flags)&Mark_flag_haste_input) | \
(Oper_ports_enabled && \
(cell_flags & (Mark_flag_lock | Mark_flag_sleep)) \
? Mark_flag_none \
: (_flags)))
#define O_PORT(_delta_y, _delta_x, _flags) \
mbuffer_poke_relative_flags_or( \
mbuffer, height, width, y, x, _delta_y, _delta_x, \
Mark_flag_input | ((_flags)&Mark_flag_haste_input) | \
(Oper_ports_enabled && \
(cell_flags & (Mark_flag_lock | Mark_flag_sleep)) \
? Mark_flag_none \
: (_flags)))
#define END_PORTS }
#define BEGIN_HASTE if (!(cell_flags & (Mark_flag_lock | Mark_flag_sleep))) {
#define END_HASTE }
#define OPER_MOVE_OR_EXPLODE(_delta_y, _delta_x) \
oper_move_relative_or_explode(gbuffer, mbuffer, height, width, \
This_oper_char, y, x, _delta_y, _delta_x)
#define MOVING_OPERATOR(_oper_name, _delta_y, _delta_x) \
BEGIN_DUAL_PHASE_0(_oper_name) \
BEGIN_HASTE \
REALIZE_DUAL; \
STOP_IF_DUAL_INACTIVE; \
OPER_MOVE_OR_EXPLODE(_delta_y, _delta_x); \
END_HASTE \
END_PHASE \
BEGIN_DUAL_PHASE_1(_oper_name) \
END_PHASE
//////// Operators
#define ORCA_SOLO_OPERATORS(_) _('*', bang)
#define ORCA_DUAL_OPERATORS(_) \
_('N', 'n', north) \
_('E', 'e', east) \
_('S', 's', south) \
_('W', 'w', west) \
_('A', 'a', add) \
_('M', 'm', modulo) \
_('I', 'i', increment)
ORCA_DECLARE_OPERATORS(ORCA_SOLO_OPERATORS, ORCA_DUAL_OPERATORS)
//////// Behavior
MOVING_OPERATOR(north, -1, 0)
MOVING_OPERATOR(east, 0, 1)
MOVING_OPERATOR(south, 1, 0)
MOVING_OPERATOR(west, 0, -1)
BEGIN_DUAL_PHASE_0(add)
REALIZE_DUAL;
BEGIN_DUAL_PORTS
I_PORT(0, 1, LOCKING);
I_PORT(0, 2, LOCKING);
O_PORT(1, 0, LOCKING);
END_PORTS
END_PHASE
BEGIN_DUAL_PHASE_1(add)
REALIZE_DUAL;
STOP_IF_DUAL_INACTIVE;
Glyph inp0 = PEEK(0, 1);
Glyph inp1 = PEEK(0, 2);
Glyph g = glyphs_add(inp0, inp1);
POKE(1, 0, g);
END_PHASE
BEGIN_DUAL_PHASE_0(modulo)
REALIZE_DUAL;
BEGIN_DUAL_PORTS
I_PORT(0, 1, LOCKING);
I_PORT(0, 2, LOCKING);
O_PORT(1, 0, LOCKING);
END_PORTS
END_PHASE
BEGIN_DUAL_PHASE_1(modulo)
REALIZE_DUAL;
STOP_IF_DUAL_INACTIVE;
Glyph inp0 = PEEK(0, 1);
Glyph inp1 = PEEK(0, 2);
Glyph g = glyphs_mod(inp0, inp1);
POKE(1, 0, g);
END_PHASE
BEGIN_DUAL_PHASE_0(increment)
REALIZE_DUAL;
BEGIN_DUAL_PORTS
I_PORT(0, 1, LOCKING);
I_PORT(0, 2, LOCKING);
O_PORT(1, 0, LOCKING);
END_PORTS
END_PHASE
BEGIN_DUAL_PHASE_1(increment)
END_PHASE
BEGIN_SOLO_PHASE_0(bang)
BEGIN_HASTE
BECOME('.');
END_HASTE
END_PHASE
BEGIN_SOLO_PHASE_1(bang)
END_PHASE
//////// Run simulation
#define SIM_EXPAND_SOLO_PHASE_0(_oper_char, _oper_name) \
case _oper_char: \
oper_phase0_##_oper_name(gbuf, mbuf, height, width, iy, ix, cell_flags); \
break;
#define SIM_EXPAND_SOLO_PHASE_1(_oper_char, _oper_name) \
case _oper_char: \
oper_phase1_##_oper_name(gbuf, mbuf, height, width, iy, ix); \
break;
#define SIM_EXPAND_DUAL_PHASE_0(_upper_oper_char, _lower_oper_char, \
_oper_name) \
case _upper_oper_char: \
case _lower_oper_char: \
oper_phase0_##_oper_name(gbuf, mbuf, height, width, iy, ix, cell_flags, \
glyph_char); \
break;
#define SIM_EXPAND_DUAL_PHASE_1(_upper_oper_char, _lower_oper_char, \
_oper_name) \
case _upper_oper_char: \
case _lower_oper_char: \
oper_phase1_##_oper_name(gbuf, mbuf, height, width, iy, ix, glyph_char); \
break;
static void sim_phase_0(Gbuffer gbuf, Mbuffer mbuf, Usz height, Usz width) {
for (Usz iy = 0; iy < height; ++iy) {
Glyph* glyph_row = gbuf + iy * width;
for (Usz ix = 0; ix < width; ++ix) {
Glyph glyph_char = glyph_row[ix];
if (glyph_char == '.')
continue;
U8 cell_flags = mbuffer_peek(mbuf, height, width, iy, ix) &
(Mark_flag_lock | Mark_flag_sleep);
switch (glyph_char) {
ORCA_SOLO_OPERATORS(SIM_EXPAND_SOLO_PHASE_0)
ORCA_DUAL_OPERATORS(SIM_EXPAND_DUAL_PHASE_0)
}
}
}
}
static void sim_phase_1(Gbuffer gbuf, Mbuffer mbuf, Usz height, Usz width) {
for (Usz iy = 0; iy < height; ++iy) {
Glyph* glyph_row = gbuf + iy * width;
for (Usz ix = 0; ix < width; ++ix) {
Glyph glyph_char = glyph_row[ix];
if (glyph_char == '.')
continue;
if (mbuffer_peek(mbuf, height, width, iy, ix) &
(Mark_flag_lock | Mark_flag_sleep))
continue;
switch (glyph_char) {
ORCA_SOLO_OPERATORS(SIM_EXPAND_SOLO_PHASE_1)
ORCA_DUAL_OPERATORS(SIM_EXPAND_DUAL_PHASE_1)
}
}
}
}
void orca_run(Gbuffer gbuf, Mbuffer mbuf, Usz height, Usz width) {
mbuffer_clear(mbuf, height, width);
sim_phase_0(gbuf, mbuf, height, width);
sim_phase_1(gbuf, mbuf, height, width);
}