1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
|
#include "board.h"
#include <math.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define NUM_SECTORS (sizeof(SECTORS) / sizeof(*SECTORS))
#define SECTOR_WIDTH (360.0 / NUM_SECTORS)
int SECTORS[] = { 20, 1, 18, 4, 13, 6, 10, 15, 2, 17, 3, 19, 7,
16, 8, 11, 14, 9, 12, 5 };
int SECTOR_INDS[NUM_SECTORS];
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)
};
static const char *RING_NAMES[] = {
FOREACH_RING(GEN_RING_STR)
"OUT"
};
double OUTER_DISTS[] = {
FOREACH_RING(GEN_RING_OUTER_DIST)
};
double CENTRE_DISTS[sizeof(OUTER_DISTS) / sizeof(*OUTER_DISTS)];
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_centre_dists()
{
CENTRE_DISTS[0] = 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_centre_dists();
}
int get_sector(double angle)
{
double shifted = angle - 90 - (SECTOR_WIDTH/2);
return SECTORS[NUM_SECTORS - 1 -
(int)((shifted - (360 * floor(shifted/360))) / SECTOR_WIDTH)];
}
enum ring get_ring(double radius)
{
for (int i = R_BULL; i < R_OUT; ++i)
if (radius < OUTER_DISTS[i])
return i;
return R_OUT;
}
struct segment get_segment(struct pcoords c)
{
return (struct segment){ .sector = get_sector(c.a),
.ring = get_ring(c.r) };
}
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;
else if (seg.ring == R_25)
return 25;
else if (seg.ring == R_TREBLE)
return 3 * seg.sector;
else if (seg.ring == R_DOUBLE)
return 2 * seg.sector;
else 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;
}
struct pcoords segment_centre(struct segment seg)
{
return (struct pcoords){ .a = SECTOR_ANGLES[SECTOR_INDS[seg.sector-1]],
.r = CENTRE_DISTS[seg.ring] };
}
struct segment segment_from_name(char *name)
{
int s = 20;
enum ring r;
if (!strcmp(name, "BULL")) {
r = R_BULL;
} else if (!strcmp(name, "25")) {
r = R_25;
} else if (name[0] == 'T') {
r = R_TREBLE;
s = atoi(name+1);
} else if (name[0] == 'D') {
r = R_DOUBLE;
s = atoi(name+1);
} else {
r = R_BIG;
s = atoi(name);
}
return (struct segment){ .sector = s, .ring = r };
}
|
