132 lines
3.0 KiB
C
132 lines
3.0 KiB
C
/*
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* Copyright (c) Camden Dixie O'Brien
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* SPDX-License-Identifier: AGPL-3.0-only
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*/
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#include <SDL2/SDL.h>
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#include <assert.h>
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#include <ctype.h>
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#include <libxml/parser.h>
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#define TILESIZE 32
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#define WINWIDTH 30
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#define WINHEIGHT 20
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#define MAX_PATH_LEN 128
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#define MAP_ASSET "/map.tmx"
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#define MAPWIDTH 112
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#define MAPHEIGHT 112
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#define MAPSHIFTX 48
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#define MAPSHIFTY 48
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static SDL_Window *window;
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static SDL_Renderer *renderer;
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static unsigned map[MAPWIDTH][MAPHEIGHT];
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int main(int argc, char *argv[])
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{
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if (2 != argc) {
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fprintf(stderr, "Usage: %s ASSETS-DIR\n", argv[0]);
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return 1;
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}
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int err = SDL_Init(SDL_INIT_VIDEO);
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assert(0 == err);
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window = SDL_CreateWindow(
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"2D Game", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED,
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TILESIZE * WINWIDTH, TILESIZE * WINHEIGHT, 0);
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assert(NULL != window);
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renderer = SDL_CreateRenderer(window, -1, 0);
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assert(NULL != renderer);
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xmlDocPtr doc;
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xmlNodePtr node;
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char mappath[MAX_PATH_LEN];
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strncpy(mappath, argv[1], MAX_PATH_LEN);
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strncat(mappath, MAP_ASSET, MAX_PATH_LEN);
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doc = xmlParseFile(mappath);
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assert(NULL != doc);
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node = xmlDocGetRootElement(doc);
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assert(0 == xmlStrcmp(node->name, (const xmlChar *)"map"));
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node = node->xmlChildrenNode;
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while (NULL != node
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&& xmlStrcmp(node->name, (const xmlChar *)"layer") != 0)
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node = node->next;
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assert(NULL != node);
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node = node->xmlChildrenNode;
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while (NULL != node
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&& xmlStrcmp(node->name, (const xmlChar *)"data") != 0)
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node = node->next;
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assert(NULL != node);
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xmlNodePtr chunk_contents;
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for (node = node->xmlChildrenNode; NULL != node; node = node->next) {
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if (0 != xmlStrcmp(node->name, (const xmlChar *)"chunk"))
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continue;
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xmlChar *x_attr, *y_attr;
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x_attr = xmlGetProp(node, (const xmlChar *)"x");
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y_attr = xmlGetProp(node, (const xmlChar *)"y");
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const int chunk_x = atoi((const char *)x_attr);
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const int chunk_y = atoi((const char *)y_attr);
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chunk_contents = node->xmlChildrenNode;
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assert(
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0 == xmlStrcmp(chunk_contents->name, (const xmlChar *)"text"));
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int x = chunk_x + MAPSHIFTX, y = chunk_y + MAPSHIFTY;
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xmlChar buf[10];
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const xmlChar *p, *q;
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q = chunk_contents->content;
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while (isspace((const char)*q))
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++q;
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p = q;
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while ('\0' != *q) {
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switch (*q) {
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case (xmlChar)',':
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memset(buf, 0, sizeof(buf));
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memcpy(buf, p, sizeof(xmlChar) * (q - p));
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assert(x < MAPWIDTH && y < MAPHEIGHT);
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map[x][y] = (unsigned)atoi((const char *)buf);
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++x;
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p = ++q;
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break;
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case (xmlChar)'\n':
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if (x < MAPWIDTH) {
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memset(buf, 0, sizeof(buf));
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memcpy(buf, p, sizeof(xmlChar) * (q - p));
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assert(y < MAPHEIGHT);
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map[x][y] = (unsigned)atoi((const char *)buf);
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}
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x = chunk_x + MAPSHIFTX;
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++y;
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p = ++q;
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break;
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default:
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++q;
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break;
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}
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}
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}
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SDL_Event event;
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SDL_RenderClear(renderer);
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while (1) {
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SDL_PollEvent(&event);
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switch (event.type) {
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case SDL_QUIT:
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goto quit;
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default:
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break;
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}
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}
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quit:
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SDL_DestroyRenderer(renderer);
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SDL_DestroyWindow(window);
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SDL_Quit();
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return 0;
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}
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