mirror of
https://github.com/curioustorvald/Terrarum.git
synced 2026-03-15 08:06:06 +09:00
90 lines
2.6 KiB
Kotlin
90 lines
2.6 KiB
Kotlin
package net.torvald.terrarum.gameworld
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/**
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* Created by minjaesong on 2016-02-15.
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*/
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/*open class PairedMapLayer : Iterable<Byte> {
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val width: Int; val height: Int
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/**
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* 0b_xxxx_yyyy, x for lower index, y for higher index
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* e.g.
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* 0110 1101 is interpreted as
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* 6 for tile 0, 13 for tile 1.
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*/
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internal @Volatile var data: ByteArray
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constructor(width: Int, height: Int) {
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this.width = width / 2
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this.height = height
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data = ByteArray(width * height / 2)
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}
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constructor(width: Int, height: Int, data: ByteArray) {
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this.data = data
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this.width = width / 2
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this.height = height
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}
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/**
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* Returns an iterator over elements of type `T`.
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* Note: this iterator will return combined damage, that is 0bxxxx_yyyy as whole.
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* @return an Iterator.
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*/
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override fun iterator(): Iterator<Byte> {
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return object : Iterator<Byte> {
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private var iteratorCount = 0
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override fun hasNext(): Boolean {
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return iteratorCount < width * height
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}
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override fun next(): Byte {
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val y = iteratorCount / width
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val x = iteratorCount % width
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// advance counter
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iteratorCount += 1
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return data[y * width + x]
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}
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}
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}
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internal fun getData(x: Int, y: Int): Int? {
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return if (x !in 0..width * 2 - 1 || y !in 0..height - 1)
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null
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else {
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if (x and 0x1 == 0)
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// higher four bits for i = 0, 2, 4, ...
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(java.lang.Byte.toUnsignedInt(data[y * width + x / 2]) and 0xF0) ushr 4
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else
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// lower four bits for i = 1, 3, 5, ...
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java.lang.Byte.toUnsignedInt(data[y * width + x / 2]) and 0x0F
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}
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}
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internal fun setData(x: Int, y: Int, data: Int) {
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if (data < 0 || data >= 16) throw IllegalArgumentException("[PairedMapLayer] $data: invalid data value.")
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if (x and 0x1 == 0)
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// higher four bits for i = 0, 2, 4, ...
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this.data[y * width + x / 2] =
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(java.lang.Byte.toUnsignedInt(this.data[y * width + x / 2]) and 0x0F
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or (data and 0xF shl 4)).toByte()
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else
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// lower four bits for i = 1, 3, 5, ...
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this.data[y * width + x / 2] = (java.lang.Byte.toUnsignedInt(this.data[y * width + x / 2]) and 0xF0
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or (data and 0xF)).toByte()
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}
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companion object {
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@Transient const val RANGE = 16
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@Transient const val SIZEOF: Byte = 1 // 1 for 8-bit, 2 for 16-bit, ...
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}
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}*/ |