dim manager test 1

server/dimension/loadmanager.go

@@ -0,0 +1,53 @@
+package dimension
+
+import (
+	"container/list"
+
+	"github.com/Tnze/go-mc/level"
+)
+
+type manager struct {
+	storage
+	elements     map[level.ChunkPos]*list.Element
+	activeChunks *list.List
+
+	chunkLoadQueue   []level.ChunkPos
+	chunkUnloadQueue []level.ChunkPos
+}
+
+type chunkHandler struct {
+	level.ChunkPos
+	*level.Chunk
+}
+
+func (m *manager) refresh(players [][2]int) {
+	m.chunkLoadQueue = m.chunkLoadQueue[:0]
+	m.chunkUnloadQueue = m.chunkUnloadQueue[:0]
+
+	newActives := list.New()
+	const N = 16
+	for _, p := range players {
+		for i := 1 - N; i < N; i++ {
+			for j := 1 - N; j < N; j++ {
+				pos := level.ChunkPos{
+					X: p[0] + i,
+					Z: p[1] + j,
+				}
+				if e := m.elements[pos]; e != nil {
+					// chunk exist, move into newActives
+					v := m.activeChunks.Remove(e)
+					m.elements[pos] = newActives.PushBack(v)
+				} else {
+					// not exist, load from storage
+					m.chunkLoadQueue = append(m.chunkLoadQueue, pos)
+				}
+			}
+		}
+	}
+	for e := m.activeChunks.Front(); e != nil; e = e.Next() {
+		pos := e.Value.(chunkHandler).ChunkPos
+		m.chunkUnloadQueue = append(m.chunkUnloadQueue, pos)
+		m.elements[pos] = newActives.PushBack(e.Value)
+	}
+	m.activeChunks = newActives
+}