shithub: orca

ref: 460f98e13c2f33482794572f35be6ff286609cca
dir: /mark.h/

#pragma once
#include "base.h"

typedef enum {
  Mark_flag_none = 0,
  Mark_flag_haste_input = 1 << 0,
  Mark_flag_input = 1 << 1,
  Mark_flag_lock = 1 << 2,
  Mark_flag_output = 1 << 3,
  Mark_flag_sleep_phase0 = 1 << 4,
  Mark_flag_sleep_phase1 = 1 << 5,
} Mark_flags;

typedef U8* Markmap_buffer;

typedef struct Markmap_reusable {
  Markmap_buffer buffer;
  Usz capacity;
} Markmap_reusable;

void markmap_reusable_init(Markmap_reusable* map);
void markmap_reusable_ensure_size(Markmap_reusable* map, Usz height, Usz width);
void markmap_reusable_deinit(Markmap_reusable* map);

void markmap_clear(Markmap_buffer map, Usz height, Usz width);

ORCA_FORCE_INLINE
Mark_flags markmap_peek_relative(Markmap_buffer map, Usz map_height,
                                 Usz map_width, Usz y, Usz x, Isz offs_y,
                                 Isz offs_x);
ORCA_FORCE_INLINE
void markmap_poke_relative(Markmap_buffer map, Usz map_height, Usz map_width,
                           Usz y, Usz x, Isz offs_y, Isz offs_x,
                           Mark_flags flags);

// Inline implementation

ORCA_FORCE_INLINE
Mark_flags markmap_peek_relative(Markmap_buffer map, Usz map_height,
                                 Usz map_width, Usz y, Usz x, Isz offs_y,
                                 Isz offs_x) {
  Isz y0 = (Isz)y + offs_y;
  Isz x0 = (Isz)x + offs_x;
  if (y0 >= (Isz)map_height || x0 >= (Isz)map_width || y0 < 0 || x0 < 0)
    return Mark_flag_none;
  return map[(Usz)y0 * map_width + (Usz)x0];
}

ORCA_FORCE_INLINE
void markmap_poke_relative(Markmap_buffer map, Usz map_height, Usz map_width,
                           Usz y, Usz x, Isz offs_y, Isz offs_x,
                           Mark_flags flags) {
  Isz y0 = (Isz)y + offs_y;
  Isz x0 = (Isz)x + offs_x;
  if (y0 >= (Isz)map_height || x0 >= (Isz)map_width || y0 < 0 || x0 < 0)
    return;
  map[(Usz)y0 * map_width + (Usz)x0] = (U8)flags;
}