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@@ -84,6 +84,31 @@ public class PrimitiveChunkletStore implements ChunkletStore {
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}
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}
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+ /*
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+ * The column: An array of 9 bytes which represent all y values for a given (x,z) Chunklet-coordinate
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+ *
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+ * The first byte is an address byte, this provides the x and z values.
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+ * The next 8 bytes are all y values from 0 to 63, with each byte containing 8 bits of true/false data
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+ *
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+ * Each of these 8 bytes address to a y value from right to left
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+ *
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+ * Examples:
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+ * 00000001 represents that the lowest y value in this byte is true, all others are off
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+ * 10000000 represents that the highest y value in this byte is true, all others are off
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+ * 10000001 represents that the lowest and highest y values in this byte are true, all others are off
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+ *
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+ * Full columns:
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+ * See comment on Address byte for information on how to use that byte
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+ *
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+ * Example:
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+ * ADDRESS_BYTE 10000000 00000001 00000000 00000000 00000000 00000000 00000000 00000000
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+ * - x, z from ADDRESS_BYTE
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+ * - The next byte contains data from 0 to 7
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+ * - 1 is set in the highest bit position, this is 7 in y coordinate
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+ * - The next byte contains data from 8 to 15
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+ * - 1 is set in the lowest bit position, this is 8 in the y coordinate
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+ * Therefore, for this column: There are true values at (x, 7, z) and (x, 8, z)
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+ */
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private byte[] constructColumn(int x, int z) {
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byte[] column = new byte[9];
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int index = 1;
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NuclearW