65 lines
1.5 KiB
Kotlin
65 lines
1.5 KiB
Kotlin
package ru.dbotthepony.kstarbound.world
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import ru.dbotthepony.kstarbound.world.api.CHUNK_SIZE
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import ru.dbotthepony.kstarbound.world.api.IChunk
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import ru.dbotthepony.kstarbound.world.api.IChunkCell
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import ru.dbotthepony.kstarbound.world.api.ITileAccess
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import ru.dbotthepony.kstarbound.world.api.ITileState
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import ru.dbotthepony.kvector.vector.Vector2i
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fun IChunk.iterate(fromX: Int = 0, fromY: Int = 0, toX: Int = fromX + CHUNK_SIZE, toY: Int = fromY + CHUNK_SIZE): Iterator<Pair<Vector2i, IChunkCell>> {
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return object : Iterator<Pair<Vector2i, IChunkCell>> {
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private var x = fromX
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private var y = fromY
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override fun hasNext(): Boolean {
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return x < toX && y < toY
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}
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override fun next(): Pair<Vector2i, IChunkCell> {
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if (!hasNext())
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throw NoSuchElementException()
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val tile = getCell(x, y)
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val pos = Vector2i(x, y)
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x++
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if (x >= toX) {
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y++
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x = 0
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}
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return pos to tile
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}
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}
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}
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fun ITileAccess.iterateTiles(fromX: Int = 0, fromY: Int = 0, toX: Int = fromX + CHUNK_SIZE, toY: Int = fromY + CHUNK_SIZE): Iterator<Pair<Vector2i, ITileState>> {
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return object : Iterator<Pair<Vector2i, ITileState>> {
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private var x = fromX
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private var y = fromY
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override fun hasNext(): Boolean {
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return x < toX && y < toY
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}
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override fun next(): Pair<Vector2i, ITileState> {
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if (!hasNext())
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throw NoSuchElementException()
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val tile = getTile(x, y)
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val pos = Vector2i(x, y)
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x++
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if (x >= toX) {
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y++
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x = 0
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}
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return pos to tile
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}
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}
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}
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