setup.gno

 1package engine
 2
 3import "gno.land/p/g1th0masp67zfs9lg6d34qhghldhg6kjcqjuv7c2/gnoslinger/hex/v0"
 4
 5// The showdown's SET UP (rules 3.4 and 29.2; [H3]): each character has its
 6// own hexes to set up in, as a showdown's SET UP assigns them (showdown 1,
 7// Gunfight, lines its two sides up inside the corral; this one puts up to
 8// four around its middle). The seats take the characters in order: the creator is
 9// the first, each player joining the next. Nobody is alerted (29.21): all
10// start upright with the Colt holstered, facing any direction.
11
12// CharSetup is where a character of the showdown sets up: the hexes it may
13// stand in, and the way it faces unless its player turns it.
14type CharSetup struct {
15	Char   string
16	Hexes  []string
17	Facing hex.Dir
18}
19
20// Setups is the showdown played, one character per seat in seat order,
21// each a side of its own, around the middle of the corral: the Marshal on
22// the west side in D5-D7, E6 and E7, the Kid on the east side in H5-H7, G6
23// and G7, Reb to the south in E8, F7, F8 and G8, Yankee to the north in
24// E5, F5, F4 and G5. They face
25// the middle: a flat-top grid has no west or east, so the Marshal looks
26// south-east and the Kid north-west; Reb looks north, Yankee south. A
27// character with no entry is not in the showdown; a game of n seats uses
28// the first n.
29var Setups = []CharSetup{
30	{Char: "marshal", Hexes: []string{"A-D5", "A-D6", "A-D7", "A-E6", "A-E7"}, Facing: hex.SE},
31	{Char: "the_kid", Hexes: []string{"A-H5", "A-H6", "A-H7", "A-G6", "A-G7"}, Facing: hex.NW},
32	{Char: "reb", Hexes: []string{"A-E8", "A-F7", "A-F8", "A-G8"}, Facing: hex.N},
33	{Char: "yankee", Hexes: []string{"A-E5", "A-F5", "A-F4", "A-G5"}, Facing: hex.S},
34}
35
36// SeatChar is the character of a seat, "" for a seat the showdown does not have.
37func SeatChar(seat int) string {
38	if seat < 0 || seat >= len(Setups) {
39		return ""
40	}
41	return Setups[seat].Char
42}
43
44// SetupOf returns the set up of a character, nil when it is not in the showdown.
45func SetupOf(charKey string) *CharSetup {
46	for i := range Setups {
47		if Setups[i].Char == charKey {
48			return &Setups[i]
49		}
50	}
51	return nil
52}
53
54// ShowdownChars lists the characters of the showdown, seats in order.
55func ShowdownChars() []string {
56	out := make([]string, len(Setups))
57	for i, s := range Setups {
58		out[i] = s.Char
59	}
60	return out
61}
62
63// CanSetUp reports whether charKey may set up in hex id: one of its hexes.
64func CanSetUp(charKey, id string) bool {
65	s := SetupOf(charKey)
66	if s == nil {
67		return false
68	}
69	for _, h := range s.Hexes {
70		if h == id {
71			return true
72		}
73	}
74	return false
75}
76
77// SetUp stands seat p's character upright in hex id facing f; the rest of
78// its sheet is left as it is.
79func (s *State) SetUp(p int, id string, f hex.Dir) {
80	s.Chars[p].Hex = id
81	s.Chars[p].Facing = f
82	s.Chars[p].Down = false
83}