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#include "board.h"
#include <math.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int SECTORS[] = { 20, 1, 18, 4, 13, 6, 10, 15, 2, 17,
3, 19, 7, 16, 8, 11, 14, 9, 12, 5 };
static int SECTOR_INDS[NUM_SECTORS];
static double SECTOR_ANGLES[NUM_SECTORS];
static const char *SECTOR_NAMES[] = {
FOREACH_SECTOR(GEN_SECTOR_STR)
FOREACH_SECTOR(GEN_SECTOR_STR_D)
FOREACH_SECTOR(GEN_SECTOR_STR_T)
};
double OUTER_DISTS[] = {
FOREACH_RING(GEN_RING_OUTER_DIST)
};
static double CENTRE_DISTS[sizeof(OUTER_DISTS) / sizeof(*OUTER_DISTS)];
static const char *RING_NAMES[] = {
FOREACH_RING(GEN_RING_STR)
"OUT"
};
static void init_sectors()
{
for (size_t i = 0; i < NUM_SECTORS; ++i) {
SECTOR_INDS[SECTORS[i] - 1] = i;
double angle = 90 - (i * SECTOR_WIDTH);
if (angle < 0)
angle += 360;
SECTOR_ANGLES[i] = angle;
}
}
static void init_rings()
{
CENTRE_DISTS[R_BULL] = 0;
for (int i = R_25; i < R_OUT; ++i)
CENTRE_DISTS[i] = (OUTER_DISTS[i] -
((OUTER_DISTS[i] - OUTER_DISTS[i - 1]) / 2));
}
void init_board()
{
init_sectors();
init_rings();
}
static int sector_from_angle(double angle)
{
double shifted = angle - 90 - (SECTOR_WIDTH / 2);
shifted -= 360 * floor(shifted / 360);
return SECTORS[NUM_SECTORS - 1 - (int)(shifted / SECTOR_WIDTH)];
}
static enum ring ring_from_radius(double radius)
{
for (int i = R_BULL; i < R_OUT; ++i) {
if (radius < OUTER_DISTS[i])
return i;
}
return R_OUT;
}
struct segment segment_from_pcoords(struct pcoords c)
{
return (struct segment){ .sector = sector_from_angle(c.a),
.ring = ring_from_radius(c.r) };
}
struct segment segment_from_name(const char *name)
{
struct segment seg = { .sector = 20 };
if (!strcmp(name, "BULL")) {
seg.ring = R_BULL;
} else if (!strcmp(name, "25")) {
seg.ring = R_25;
} else if (name[0] == 'T') {
seg.ring = R_TREBLE;
seg.sector = atoi(name + 1);
} else if (name[0] == 'D') {
seg.ring = R_DOUBLE;
seg.sector = atoi(name + 1);
} else {
seg.ring = R_BIG;
seg.sector = atoi(name);
}
return seg;
}
struct pcoords segment_centre(struct segment seg)
{
return (struct pcoords){
.a = SECTOR_ANGLES[SECTOR_INDS[seg.sector - 1]],
.r = CENTRE_DISTS[seg.ring] };
}
const char *segment_name(struct segment seg)
{
if (seg.ring == R_BULL || seg.ring == R_25 || seg.ring == R_OUT)
return RING_NAMES[seg.ring];
int ind = seg.sector - 1;
if (seg.ring == R_DOUBLE)
ind += 20;
else if (seg.ring == R_TREBLE)
ind += 40;
return SECTOR_NAMES[ind];
}
int segment_points(struct segment seg)
{
if (seg.ring == R_BULL)
return 50;
if (seg.ring == R_25)
return 25;
if (seg.ring == R_TREBLE)
return 3 * seg.sector;
if (seg.ring == R_DOUBLE)
return 2 * seg.sector;
if (seg.ring == R_SMALL || seg.ring == R_BIG)
return seg.sector;
return 0;
}
bool segment_is_double(struct segment seg)
{
if (seg.ring == R_DOUBLE || seg.ring == R_BULL)
return true;
return false;
}
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