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56 lines
1.3 KiB
C++
56 lines
1.3 KiB
C++
#ifndef _ESM_PGRD_H
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#define _ESM_PGRD_H
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#include "esm_reader.hpp"
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namespace ESM {
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/*
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* Path grid.
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*/
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struct PathGrid
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{
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struct DATAstruct
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{
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int x, y; // Grid location, matches cell for exterior cells
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short s1; // ?? Usually but not always a power of 2. Doesn't seem
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// to have any relation to the size of PGRC.
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short s2; // Number of path points? Size of PGRP block is always 16 * s2;
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}; // 12 bytes
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std::string cell; // Cell name
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DATAstruct data;
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ESM_Context context; // Context so we can return here later and
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// finish the job
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void load(ESMReader &esm)
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{
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esm.getHNT(data, "DATA", 12);
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cell = esm.getHNString("NAME");
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// Remember this file position
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context = esm.getContext();
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// Check that the sizes match up. Size = 16 * s2 (path points?)
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if(esm.isNextSub("PGRP"))
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{
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esm.skipHSub();
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int size = esm.getSubSize();
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if(size != 16*data.s2)
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esm.fail("Path grid table size mismatch");
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}
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// Size varies. Path grid chances? Connections? Multiples of 4
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// suggest either int or two shorts, or perhaps a float. Study
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// it later.
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if(esm.isNextSub("PGRC"))
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{
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esm.skipHSub();
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int size = esm.getSubSize();
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if(size % 4 != 0)
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esm.fail("PGRC size not a multiple of 4");
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}
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}
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};
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}
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#endif
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