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package game
import (
"thehouseoficarus/internal/net"
"thehouseoficarus/internal/world"
)
// exitDisplay summarizes how an exit appears to a player: whether it is listed
// at all (and traversable by the map BFS / walk pathfinder), whether movement
// is refused (and the look listing should tag it "(blocked)"), and whether the
// listing should tag it "(HIDDEN)".
//
// It is the single source of truth shared by the look listing, the standalone
// `exits` command, `look <direction>`, movement, the map connector state, the
// `verbs` command, and the walk pathfinder — replacing the per-callsite inline
// checks that previously disagreed (e.g. gods saw a "(blocked)" tag in look
// even though they can traverse and the map renders the link open).
//
// Semantics:
// - Hidden exit: visible only once discovered (gods always discover). When
// visible it is tagged "(HIDDEN)". A nil player (background render) never
// discovers, so hidden exits are absent.
// - God mode: exits are visible and never blocked (matches map rendering).
// - always_blocked: absolute — blocks movement/listing/map regardless of any
// condition. The condition is NOT evaluated when always_blocked is set.
// - condition: blocks when present and failing for this player.
type exitDisplay struct {
Visible bool
Blocked bool
TagHidden bool
}
func (g *Game) exitDisplayState(sess *net.Session, roomID int, dir world.ExitDir, exit world.ExitDef) exitDisplay {
var ed exitDisplay
p := sessPlayer(sess)
if exit.Hidden {
// exitDiscovered already returns true for gods; nil player never discovers.
if p != nil && g.exitDiscovered(p, roomID, dir) {
ed.Visible = true
ed.TagHidden = true
}
return ed
}
ed.Visible = true
if p == nil || p.GodMode {
return ed
}
if exit.AlwaysBlocked {
ed.Blocked = true
return ed
}
if exit.Condition != nil && !g.checkCondition(sess, exit.Condition) {
ed.Blocked = true
}
return ed
}
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