doodle/pkg/level/fmt_maintenance.go

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package level
import "git.kirsle.net/apps/doodle/pkg/log"
// Maintenance functions for the file format on disk.
// PruneChunks cleans up any level chunks that have no pixel data.
func (m *Level) PruneChunks() int {
var count int
for coord, chunk := range m.Chunker.Chunks {
if chunk.Len() == 0 {
log.Info("PruneChunks: %d has no pixels", coord)
delete(m.Chunker.Chunks, coord)
count++
}
}
return count
}
// PruneLinks cleans up any Actor Links that can not be resolved in the
// level data. For example, if actors were linked in Edit Mode and one
// actor is deleted leaving a broken link.
//
// Returns the number of broken links pruned.
//
// This is called automatically in WriteFile.
func (m *Level) PruneLinks() int {
var count int
for id, actor := range m.Actors {
var newLinks []string
for _, linkID := range actor.Links {
if _, ok := m.Actors[linkID]; !ok {
log.Warn("Level.PruneLinks: actor %s (%s) was linked to unresolved actor %s",
id,
actor.Filename,
linkID,
)
count++
continue
}
newLinks = append(newLinks, linkID)
}
actor.Links = newLinks
}
return count
}