448 lines
11 KiB
C
448 lines
11 KiB
C
/*
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This file is part of Warzone 2100.
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Copyright (C) 2007-2010 Warzone 2100 Project
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Warzone 2100 is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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Warzone 2100 is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Warzone 2100; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <assert.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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#include <stdio.h>
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#include <errno.h>
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#ifndef WIN32
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#include <stdbool.h>
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#include <limits.h>
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#else
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typedef int bool;
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#define PATH_MAX 255
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#define true 1
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#define false 0
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#endif
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// To compile: gcc -o ~/bin/simplipie simplipie.c -Wall -g -O0 -Wshadow
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#define iV_IMD_TEX 0x00000200
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#define iV_IMD_XNOCUL 0x00002000
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#define iV_IMD_TEXANIM 0x00004000
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#define iV_IMD_TCMASK 0x00010000
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#define MAX_POLYGON_SIZE 6 // the game can't handle more
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static bool verbose = false;
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typedef struct {
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int index[MAX_POLYGON_SIZE];
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int texCoord[MAX_POLYGON_SIZE][2];
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int vertices;
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int frames, rate, width, height; // animation data
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bool cull;
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} WZ_FACE;
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typedef struct {
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int x, y, z, reindex;
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bool dupe;
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} WZ_POSITION;
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static int parse_args(int argc, char **argv)
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{
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unsigned int i, result = 1;
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for (i = 1; argc >= 2 + i && argv[i][0] == '-'; i++)
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{
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if (argv[i][1] == 'v')
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{
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verbose = true;
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result++;
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}
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}
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if (argc < 1 + i)
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{
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fprintf(stderr, "Syntax: simplipie [-v] input_filename\n");
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fprintf(stderr, " -v Verbose mode.\n");
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exit(1);
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}
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return result;
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}
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static void dump_to_pie(FILE *ctl, FILE *fp, const char *input)
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{
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int num, x, y, z, levels, level;
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char s[200];
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bool tcmask = false;
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num = fscanf(fp, "PIE %d\n", &x);
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if (num != 1)
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{
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fprintf(stderr, "Bad PIE file %s\n", input);
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exit(1);
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}
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if (x != 2)
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{
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fprintf(stderr, "Unknown PIE version %d in %s\n", x, input);
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exit(1);
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}
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fprintf(ctl, "PIE 2\n");
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num = fscanf(fp, "TYPE %x\n", &x); // ignore
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if (num != 1)
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{
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fprintf(stderr, "Bad TYPE directive in %s\n", input);
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exit(1);
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}
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if (x & iV_IMD_TCMASK)
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{
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tcmask = true;
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fprintf(ctl, "TYPE 10200\n");
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}
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else
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{
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fprintf(ctl, "TYPE 200\n");
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}
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num = fscanf(fp, "TEXTURE %d %s %d %d\n", &z, s, &x, &y);
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if (num != 4)
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{
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fprintf(stderr, "Bad TEXTURE directive in %s\n", input);
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exit(1);
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}
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fprintf(ctl, "TEXTURE %d %s 256 256\n", z, s);
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num = fscanf(fp, "LEVELS %d\n", &levels);
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if (num != 1)
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{
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fprintf(stderr, "Bad LEVELS directive in %s\n", input);
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exit(1);
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}
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fprintf(ctl, "LEVELS %d", levels);
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for (level = 0; level < levels; level++)
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{
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int j, points, faces, facesPIE3;
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WZ_FACE *faceList;
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WZ_POSITION *posList;
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num = fscanf(fp, "\nLEVEL %d\n", &x);
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if (num != 1)
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{
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fprintf(stderr, "Bad LEVEL directive in %s.\n", input);
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exit(1);
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}
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if (level + 1 != x)
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{
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fprintf(stderr, "LEVEL directive in %s was %d should be %d.\n", input, x, level + 1);
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exit(1);
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}
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fprintf(ctl, "\nLEVEL %d\n", x);
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num = fscanf(fp, "POINTS %d\n", &points);
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if (num != 1)
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{
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fprintf(stderr, "Bad POINTS directive in %s, level %d.\n", input, level);
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exit(1);
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}
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posList = malloc(sizeof(WZ_POSITION) * points);
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for (j = 0; j < points; j++)
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{
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num = fscanf(fp, "%d %d %d\n", &posList[j].x, &posList[j].y, &posList[j].z);
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if (num != 3)
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{
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fprintf(stderr, "File %s. Bad POINTS entry level %d, number %d.\n", input, level, j);
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exit(1);
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}
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posList[j].dupe = false;
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}
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num = fscanf(fp, "POLYGONS %d", &faces);
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if (num != 1)
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{
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fprintf(stderr, "Bad POLYGONS directive in %s, level %d.\n", input, level);
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exit(1);
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}
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facesPIE3 = faces; // for starters
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faceList = malloc(sizeof(WZ_FACE) * faces);
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for (j = 0; j < faces; ++j)
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{
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int k;
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unsigned int flags;
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num = fscanf(fp, "\n%x", &flags);
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if (num != 1)
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{
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fprintf(stderr, "File %s. Bad POLYGONS texture flag entry level %d, number %d\n", input, level, j);
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exit(1);
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}
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if (!(flags & iV_IMD_TEX))
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{
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fprintf(stderr, "File %s. Bad texture flag entry level %d, number %d - no texture flag!\n", input, level, j);
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exit(1);
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}
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if (flags & iV_IMD_XNOCUL)
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{
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faceList[j].cull = true;
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facesPIE3++; // must add additional face that is faced in the opposite direction
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}
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else
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{
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faceList[j].cull = false;
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}
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num = fscanf(fp, "%d", &faceList[j].vertices);
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if (num != 1)
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{
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fprintf(stderr, "File %s. Bad POLYGONS vertices entry level %d, number %d\n", input, level, j);
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exit(1);
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}
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assert(faceList[j].vertices <= MAX_POLYGON_SIZE); // larger polygons not supported
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assert(faceList[j].vertices >= 3); // points and lines not supported
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// Read in vertex indices and texture coordinates
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for (k = 0; k < faceList[j].vertices; k++)
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{
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num = fscanf(fp, "%d", &faceList[j].index[k]);
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if (num != 1)
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{
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fprintf(stderr, "File %s. Bad vertex position entry level %d, number %d\n", input, level, j);
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exit(1);
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}
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}
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if (flags & iV_IMD_TEXANIM)
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{
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num = fscanf(fp, "%d %d %d %d", &faceList[j].frames, &faceList[j].rate, &faceList[j].width, &faceList[j].height);
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if (num != 4)
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{
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fprintf(stderr, "File %s - Bad texture animation entry level %d, number %d.\n", input, level, j);
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exit(1);
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}
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if (faceList[j].frames <= 1)
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{
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fprintf(stderr, "File %s - Level %d, polygon %d has a single animation frame. Disabled.\n", input, level, j);
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faceList[j].frames = 0;
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}
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if (faceList[0].frames != faceList[j].frames)
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{
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fprintf(stderr, "File %s - Polygon %d in level %d does not have the same number of frames as the first (%d, %d)!\n",
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input, j, level, faceList[0].frames, faceList[j].frames);
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}
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}
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else
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{
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faceList[j].frames = 0;
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faceList[j].rate = 0;
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faceList[j].width = 1; // to avoid division by zero
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faceList[j].height = 1;
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}
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for (k = 0; k < faceList[j].vertices; k++)
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{
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num = fscanf(fp, "%d %d", &faceList[j].texCoord[k][0], &faceList[j].texCoord[k][1]);
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if (num != 2)
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{
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fprintf(stderr, "File %s. Bad texture coordinate entry level %d, number %d\n", input, level, j);
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exit(1);
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}
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}
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}
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/* Remove duplicate points */
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x = 0;
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for (j = 0; j < points; j++)
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{
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int k;
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for (k = j + 1; k < points; k++)
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{
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// if points in k are equal to points in j, replace all k with j in face list
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if (posList[k].x == posList[j].x && posList[k].y == posList[j].y && posList[k].z == posList[j].z && !posList[k].dupe)
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{
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posList[k].dupe = true; // oh noes, a dupe! let's skip it when we write them out again.
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posList[k].reindex = x; // rewrite face list to point here
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}
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}
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if (!posList[j].dupe)
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{
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posList[j].reindex = x;
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x++;
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}
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}
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fprintf(ctl, "POINTS %d", x);
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for (j = 0; j < points; j++)
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{
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if (!posList[j].dupe)
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{
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fprintf(ctl, " \n\t%d %d %d", posList[j].x, posList[j].y, posList[j].z);
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}
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}
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if (verbose && (points - x))
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{
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printf("-vertices(%d) ", points - x);
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}
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// Rewrite face table
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for (j = 0; j < faces; j++)
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{
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int m;
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for (m = 0; m < faceList[j].vertices; m++)
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{
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faceList[j].index[m] = posList[faceList[j].index[m]].reindex;
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}
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facesPIE3 += faceList[j].vertices - 3; // easy tessellation
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if (faceList[j].cull)
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{
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facesPIE3 += faceList[j].vertices - 3; // must add additional face that is faced in the opposite direction also for tessellated faces
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}
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}
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if (verbose && (facesPIE3 - faces))
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{
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printf("=faces(%d) ", facesPIE3 - faces);
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}
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fprintf(ctl, "\nPOLYGONS %d", facesPIE3);
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for (j = 0; j < faces; j++)
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{
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int k, flags = iV_IMD_TEX;
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char fill[128];
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fill[0] = '\0';
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if (faceList[j].frames > 0 && (!tcmask || faceList[j].frames != 8)) // assuming 8 means team colours, strip them
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{
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flags |= iV_IMD_TEXANIM;
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sprintf(fill, " %d 1 %d %d", faceList[j].frames, faceList[j].width, faceList[j].height);
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}
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else if (verbose && tcmask && faceList[j].frames == 8)
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{
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printf("-tcol(%d) ", j);
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}
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if (faceList[j].cull)
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{
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fprintf(ctl, "\n\t%x 3 %d %d %d%s %d %d %d %d %d %d", flags, faceList[j].index[2], faceList[j].index[1], faceList[j].index[0], fill,
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faceList[j].texCoord[2][0], faceList[j].texCoord[2][1],
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faceList[j].texCoord[1][0], faceList[j].texCoord[1][1],
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faceList[j].texCoord[0][0], faceList[j].texCoord[0][1]);
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printf("+nocull(%d) ", j);
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}
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fprintf(ctl, "\n\t%x 3 %d %d %d%s %d %d %d %d %d %d", flags, faceList[j].index[0], faceList[j].index[1], faceList[j].index[2], fill,
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faceList[j].texCoord[0][0], faceList[j].texCoord[0][1],
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faceList[j].texCoord[1][0], faceList[j].texCoord[1][1],
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faceList[j].texCoord[2][0], faceList[j].texCoord[2][1]);
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// Tessellate higher than triangle polygons
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for (k = 3; k < faceList[j].vertices; k++)
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{
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if (faceList[j].cull)
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{
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fprintf(ctl, "\n\t%x 3 %d %d %d%s %d %d %d %d %d %d", flags, faceList[j].index[0], faceList[j].index[k], faceList[j].index[k - 1], fill,
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faceList[j].texCoord[0][0], faceList[j].texCoord[0][1],
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faceList[j].texCoord[k][0], faceList[j].texCoord[k][1],
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faceList[j].texCoord[k - 1][0], faceList[j].texCoord[k - 1][1]);
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}
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fprintf(ctl, "\n\t%x 3 %d %d %d%s %d %d %d %d %d %d", flags, faceList[j].index[0], faceList[j].index[k - 1], faceList[j].index[k], fill,
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faceList[j].texCoord[0][0], faceList[j].texCoord[0][1],
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faceList[j].texCoord[k - 1][0], faceList[j].texCoord[k - 1][1],
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faceList[j].texCoord[k][0], faceList[j].texCoord[k][1]);
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}
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}
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num = fscanf(fp, "\nCONNECTORS %d", &x);
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if (num == 1)
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{
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if (x < 0)
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{
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fprintf(stderr, "Bad CONNNECTORS directive in %s, level %d\n", input, level);
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exit(EXIT_FAILURE);
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}
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fprintf(ctl, "\nCONNECTORS %d", x);
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for (j = 0; j < x; ++j)
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{
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int a, b, c;
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num = fscanf(fp, "\n%d %d %d", &a, &b, &c);
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if (num != 3)
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{
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fprintf(stderr, "File %s. Bad CONNECTORS directive entry level %d, number %d\n", input, level, j);
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exit(1);
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}
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fprintf(ctl, "\n\t%d %d %d", a, b, c);
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}
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fprintf(ctl, "\n");
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}
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free(faceList);
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free(posList);
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}
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}
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int convert(const char *filename)
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{
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FILE *p, *f;
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char buffer[1024];
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size_t rsize;
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p = fopen(filename, "r");
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if (!p)
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{
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fprintf(stderr, "Cannot open \"%s\" for reading: %s\n", filename, strerror(errno));
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exit(1);
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}
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f = tmpfile();
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if (!f)
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{
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fprintf(stderr, "Cannot open temporary file for writing: %s\n", strerror(errno));
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exit(1);
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}
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dump_to_pie(f, p, filename);
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fclose(p);
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// Now copy temporary file to original
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rewind(f);
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p = fopen(filename, "w");
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while (!feof(f) && !ferror(p) && !ferror(f))
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{
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rsize = fread(buffer, 1, sizeof(buffer), f);
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fwrite(buffer, rsize, 1, p);
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}
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if (ferror(f)) fprintf(stderr, "Error reading: %s\n", strerror(ferror(f)));
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if (ferror(p)) fprintf(stderr, "Error writing: %s\n", strerror(ferror(p)));
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fclose(p);
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fclose(f); // also deletes temporary file
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return 0;
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}
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int main(int argc, char **argv)
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{
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int i;
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for (i = parse_args(argc, argv); i < argc; i++)
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{
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if (verbose) printf("Processing %s ", argv[i]);
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convert(argv[i]);
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if (verbose) printf("\n");
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}
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return 0;
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}
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