all: remove koka code, move go to repo root

character.go

@@ -0,0 +1,59 @@
+package horse
+
+type CharacterID int16
+
+type Character struct {
+	ID   CharacterID `json:"chara_id"`
+	Name string      `json:"name"`
+}
+
+func (c Character) String() string {
+	return c.Name
+}
+
+type AffinityRelation struct {
+	IDA      int `json:"chara_a"`
+	IDB      int `json:"chara_b"`
+	IDC      int `json:"chara_c,omitzero"`
+	Affinity int `json:"affinity"`
+}
+
+// Conversation describes a lobby conversation.
+type Conversation struct {
+	// CharacterID is the ID of the character who has the conversation as
+	// a gallery entry.
+	CharacterID CharacterID `json:"chara_id"`
+	// Number is the conversation number within the character's gallery.
+	Number int `json:"number"`
+	// Location is the ID of the location the conversation occurs in the lobby.
+	Location LobbyConversationLocationID `json:"location"`
+	// LocationName is the name of the lobby location, for convenience.
+	LocationName string `json:"location_name"`
+	// Chara1 is the first conversation participant ID.
+	// It does not necessarily match CharacterID.
+	Chara1 CharacterID `json:"chara_1"`
+	// Chara2 is the second conversation participant ID.
+	Chara2 CharacterID `json:"chara_2,omitzero"`
+	// Chara3 is the third conversation participant ID.
+	Chara3 CharacterID `json:"chara_3,omitzero"`
+	// ConditionType is a complete mystery to me.
+	ConditionType int `json:"condition_type"`
+}
+
+type LobbyConversationLocationID int
+
+//go:generate go run golang.org/x/tools/cmd/stringer@v0.41.0 -type LobbyConversationLocationID -trimprefix Lobby -linecomment
+const (
+	LobbyRightFront1 LobbyConversationLocationID = 110 // right side front
+	LobbyRightFront2 LobbyConversationLocationID = 120 // right side front
+	LobbyRightFront3 LobbyConversationLocationID = 130 // right side front
+	LobbyLeftTable1  LobbyConversationLocationID = 210 // left side table
+	LobbyLeftTable2  LobbyConversationLocationID = 220 // left side table
+	LobbyBackSeat    LobbyConversationLocationID = 310 // center back seat
+	LobbyPosters1    LobbyConversationLocationID = 410 // center posters
+	LobbyPosters2    LobbyConversationLocationID = 420 // center posters
+	LobbyPosters3    LobbyConversationLocationID = 430 // center posters
+	LobbySchoolMap1  LobbyConversationLocationID = 510 // left side school map
+	LobbySchoolMap2  LobbyConversationLocationID = 520 // left side school map
+	LobbySchoolMap3  LobbyConversationLocationID = 530 // left side school map
+)