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// CopyBlocks.cpp
// Implements the test for cChunkData::CopyBlockTypes() range copying
#include "Globals.h"
#include "ChunkData.h"
int main(int argc, char ** argv)
{
// Set up a cChunkData with known contents - all blocks 0x01, all metas 0x02:
cChunkData Data;
cChunkDef::BlockTypes BlockTypes;
cChunkDef::BlockNibbles BlockMetas;
memset(BlockTypes, 0x01, sizeof(BlockTypes));
memset(BlockMetas, 0x02, sizeof(BlockMetas));
Data.SetBlockTypes(BlockTypes);
Data.SetMetas(BlockMetas);
// Try to read varying amounts of blocktypes from the cChunkData.
// Verify that the exact amount of memory is copied, by copying to a larger buffer and checking its boundaries
BLOCKTYPE TestBuffer[5 * cChunkDef::NumBlocks];
size_t WritePosIdx = 2 * cChunkDef::NumBlocks;
BLOCKTYPE * WritePosition = &TestBuffer[WritePosIdx];
memset(TestBuffer, 0x03, sizeof(TestBuffer));
for (size_t idx = 0; idx < 5000; idx++)
{
for (size_t len = 1; len < 1000; len += 15)
{
printf("Testing copying %u blocks from index %u\n", (unsigned)len, (unsigned)idx);
Data.CopyBlockTypes(WritePosition, idx, len);
// Verify the data copied:
for (size_t i = 0; i < len; i++)
{
assert_test(WritePosition[i] == 0x01);
}
// Verify the space before the copied data hasn't been changed:
for (size_t i = 0; i < WritePosIdx + idx; i++)
{
assert_test(TestBuffer[i] == 0x03);
}
// Verify the space after the copied data hasn't been changed:
for (size_t i = WritePosIdx + idx + len; i < ARRAYCOUNT(TestBuffer); i++)
{
assert_test(TestBuffer[i] == 0x03);
}
}
} // for idx
return 0;
}
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