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package game
import (
"fmt"
"os"
"path/filepath"
"strconv"
"strings"
"gopkg.in/yaml.v3"
"thehouseoficarus/internal/behavior"
"thehouseoficarus/internal/net"
"thehouseoficarus/internal/world"
)
func (g *Game) roomInsert(sess *net.Session, args []string) {
p := sess.Player
if p == nil {
return
}
if len(args) == 0 {
sess.WriteLine("Usage: room insert <direction> [name]")
return
}
dir := g.World.ResolveExit(args[0])
if dir == "" {
sess.WriteLine("Invalid direction. Use n/s/e/w/ne/nw/se/sw/u/d.")
return
}
curPath, ok := g.World.GetRoomPath(p.RoomID)
if !ok {
sess.WriteLine("Error: can't find current room file.")
return
}
curRoom, err := g.World.LoadRoom(p.RoomID)
if err != nil {
sess.WriteLine("Error loading current room.")
return
}
exitDef, hasExit := curRoom.Exits[dir]
if !hasExit {
sess.WriteLine(fmt.Sprintf("There is no exit to the %s from here.", dir))
return
}
targetID := exitDef.Room
targetRoom, err := g.World.LoadRoom(targetID)
if err != nil {
sess.WriteLine(fmt.Sprintf("Target room %d not found.", targetID))
return
}
targetName := fmt.Sprintf("#%d (%s)", targetID, targetRoom.Name)
oppositeDir := world.OppositeExit[dir]
newID, err := findNextRoomID(filepath.Dir(curPath), g.World.RoomIndex())
if err != nil {
sess.WriteLine("Error scanning room directory.")
return
}
var name string
if len(args) > 1 {
name = strings.Join(args[1:], " ")
} else {
name = fmt.Sprintf("Room #%d", newID)
}
conflicts := world.InsertGridConflicts(p.RoomID, dir, targetID, newID, func(id int) (*world.Room, bool) {
r, err := g.World.LoadRoom(id)
if err != nil {
return nil, false
}
return r, true
})
if len(conflicts) > 0 {
for _, c := range conflicts {
switch c.Kind {
case world.GridConflictTwist:
room, _ := g.World.LoadRoom(c.Target)
conflictName := fmt.Sprintf("#%d", c.Target)
if room != nil {
conflictName = fmt.Sprintf("#%d (%s)", c.Target, room.Name)
}
sess.WriteLine(fmt.Sprintf(
"Cannot insert: room %s would have an ambiguous grid position after insertion (reachable via an alternate path from here).",
conflictName))
case world.GridConflictOverlap:
occRoom, _ := g.World.LoadRoom(c.Occupier)
occName := fmt.Sprintf("#%d", c.Occupier)
if occRoom != nil {
occName = fmt.Sprintf("#%d (%s)", c.Occupier, occRoom.Name)
}
sess.WriteLine(fmt.Sprintf(
"Cannot insert: pushing %s would cause grid collision with %s.",
targetName, occName))
}
}
return
}
dirPath := filepath.Dir(curPath)
newPath := filepath.Join(dirPath, strconv.Itoa(newID)+".yaml")
newRoom := &world.Room{
Name: name,
Description: behavior.DescList{
{Text: "A featureless room."},
},
Exits: map[world.ExitDir]world.ExitDef{
dir: {Room: targetID},
oppositeDir: {Room: p.RoomID},
},
}
data, err := yaml.Marshal(newRoom)
if err != nil {
sess.WriteLine("Error creating room YAML.")
return
}
if err := os.MkdirAll(dirPath, 0755); err != nil {
sess.WriteLine("Error creating directory.")
return
}
curRoom.Exits[dir] = world.RewirePreserving(exitDef, newID)
curData, err := yaml.Marshal(curRoom)
if err != nil {
sess.WriteLine("Error updating current room YAML.")
return
}
// Stage all three files (the new room, the current room, and the far
// room's reciprocal exit when it points back) into ONE journal
// transaction. The previous sequential writes could stop after the new
// room existed but before the current room's exit was rewritten, leaving
// a dangling exit with no recovery record; the transaction rolls the
// whole insert back on any failure or crash.
txn := g.newTxn()
if err := txn.Replace(newPath, data, 0644); err != nil {
sess.WriteLine(fmt.Sprintf("Error writing room file: %v", err))
return
}
if err := txn.Replace(curPath, curData, 0644); err != nil {
sess.WriteLine(fmt.Sprintf("Error writing current room file: %v", err))
return
}
if targetExit, tok := targetRoom.Exits[oppositeDir]; tok && targetExit.Room == p.RoomID {
if targetPath, tok2 := g.World.GetRoomPath(targetID); tok2 {
targetRoom.Exits[oppositeDir] = world.RewirePreserving(targetExit, newID)
targetData, terr := yaml.Marshal(targetRoom)
if terr != nil {
sess.WriteLine(fmt.Sprintf("Error updating room %d YAML: %v", targetID, terr))
return
}
if err := txn.Replace(targetPath, targetData, 0644); err != nil {
sess.WriteLine(fmt.Sprintf("Error linking the opposite exit in room %d: %v", targetID, err))
return
}
}
}
if err := txn.Commit(); err != nil {
sess.WriteLine(fmt.Sprintf("Error committing room insert: %v", err))
return
}
g.World.AddRoomPath(newID, newPath)
oldRoom := p.RoomID
g.relocatePlayer(sess, p, newID)
g.saveCharacter(p)
g.World.SeedGroundItems(newID)
g.seedRoomMobs(newID)
g.seedRoomObjects(newID)
if g.Hub != nil {
for _, other := range g.Hub.PlayersInRoom(oldRoom) {
if other != sess {
other.WriteLine(fmt.Sprintf("%s vanishes into the tunnel.", p.Name))
}
}
g.Hub.EnterRoom(sess, newID)
for _, other := range g.Hub.PlayersInRoom(newID) {
if other != sess {
other.WriteLine(fmt.Sprintf("%s appears.", p.Name))
}
}
}
g.World.RebuildRoomIndex(g.DataDir)
sess.WriteLine(fmt.Sprintf("You insert a room to the %s and create Room #%d (%s).", dir, newID, name))
g.doLook(sess)
g.runEnterSteps(sess, newID)
g.checkAggro(sess)
}
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