118 lines
4.3 KiB
C
118 lines
4.3 KiB
C
/****************************************************************************
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* apps/graphics/traveler/tools/libwld/wld_loadplanes.c
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* This file contains the logic to load the world data from the opened file
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*
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* Copyright (C) 2016 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/*************************************************************************
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* Included files
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*************************************************************************/
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#include <stdio.h>
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#include "wld_plane.h"
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/*************************************************************************
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* Private Functions
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*************************************************************************/
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/*************************************************************************
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* Name: wld_load_worldplane
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* Description:
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* This function loads the world data for one plane
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************************************************************************/
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static uint8_t wld_load_worldplane(FILE * fp, rect_head_t * list,
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uint8_t numRects)
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{
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rect_list_t *rect;
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int i;
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for (i = 0; i < numRects; i++)
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{
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/* Allocate space for the next rectangle */
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rect = wld_new_plane();
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if (!rect)
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{
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return PLANE_ALLOCATION_FAILURE;
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}
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/* Read the next rectangle from the input file */
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if (fread((char *)&rect->d, SIZEOF_RECTDATATYPE, 1, fp) != 1)
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{
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fprintf(stderr, "ERROR: read of rectangle %d (of %d) failed! ",
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i, numRects);
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fprintf(stderr, "feof=%d ferror=%d\n", feof(fp), ferror(fp));
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return PLANE_DATA_READ_ERROR;
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}
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/* Put the new rectangle into the plane list */
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wld_add_plane(rect, list);
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}
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return PLANE_SUCCESS;
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}
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/*************************************************************************
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* Public Functions
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*************************************************************************/
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/*************************************************************************
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* Name: wld_load_planes
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* Description:
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* This function loads the world data from the opened file
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************************************************************************/
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uint8_t wld_load_planes(FILE * fp)
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{
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plane_file_header_t fileHeader;
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uint8_t result;
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/* Read the plane file header */
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if (fread((char *)&fileHeader, SIZEOF_PLANEFILEHEADERTYPE, 1, fp) != 1)
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return PLANE_HEADER_READ_ERROR;
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/* Then load each grid, performing run length (rle) decoding */
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result = wld_load_worldplane(fp, &g_xplane_list, fileHeader.num_xrects);
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if (!result)
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result = wld_load_worldplane(fp, &g_yplane_list, fileHeader.num_yrects);
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if (!result)
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result = wld_load_worldplane(fp, &g_zplane_list, fileHeader.num_zrects);
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return result;
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}
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