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optimize Section flood filling

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the position is now not wrapped inside a Number object by the compiler anymore
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Bixilon 2023-05-31 18:27:21 +02:00
parent 33fb02ac50
commit 2fb7c61007
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1 changed files with 19 additions and 19 deletions
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38
src/main/java/de/bixilon/minosoft/data/world/container/block/SectionOcclusion.kt
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@ -46,34 +46,34 @@ class SectionOcclusion(
update(calculateOcclusion(floodFill()), notify) update(calculateOcclusion(floodFill()), notify)
} }
private fun trace(regions: ShortArray, x: Int, y: Int, z: Int, nextId: Short) {
val index = y shl 8 or (z shl 4) or x
if (regions[index] > 0) {
return
}
val state = provider[index]
if (state.isFullyOpaque()) {
return
}
regions[index] = nextId
if (x > 0) trace(regions, x - 1, y, z, nextId)
if (x < ProtocolDefinition.SECTION_MAX_X) trace(regions, x + 1, y, z, nextId)
if (y > 0) trace(regions, x, y - 1, z, nextId)
if (y < ProtocolDefinition.SECTION_MAX_Y) trace(regions, x, y + 1, z, nextId)
if (z > 0) trace(regions, x, y, z - 1, nextId)
if (z < ProtocolDefinition.SECTION_MAX_Z) trace(regions, x, y, z + 1, nextId)
}
private fun floodFill(): ShortArray { private fun floodFill(): ShortArray {
// mark regions and check direct neighbours // mark regions and check direct neighbours
val regions = ShortArray(ProtocolDefinition.BLOCKS_PER_SECTION) val regions = ShortArray(ProtocolDefinition.BLOCKS_PER_SECTION)
fun trace(x: Int, y: Int, z: Int, nextId: Short) {
val index = y shl 8 or (z shl 4) or x
if (regions[index] > 0) {
return
}
val state = provider[index]
if (state.isFullyOpaque()) {
return
}
regions[index] = nextId
if (x > 0) trace(x - 1, y, z, nextId)
if (x < ProtocolDefinition.SECTION_MAX_X) trace(x + 1, y, z, nextId)
if (y > 0) trace(x, y - 1, z, nextId)
if (y < ProtocolDefinition.SECTION_MAX_Y) trace(x, y + 1, z, nextId)
if (z > 0) trace(x, y, z - 1, nextId)
if (z < ProtocolDefinition.SECTION_MAX_Z) trace(x, y, z + 1, nextId)
}
var next: Short = 1 var next: Short = 0
for (y in 0 until ProtocolDefinition.SECTION_HEIGHT_Y) { for (y in 0 until ProtocolDefinition.SECTION_HEIGHT_Y) {
for (z in 0 until ProtocolDefinition.SECTION_WIDTH_Z) { for (z in 0 until ProtocolDefinition.SECTION_WIDTH_Z) {
for (x in 0 until ProtocolDefinition.SECTION_WIDTH_X) { for (x in 0 until ProtocolDefinition.SECTION_WIDTH_X) {
trace(x, y, z, next++) trace(regions, x, y, z, ++next)
} }
} }
} }