level.c


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#include "level.h"
#include <stdlib.h>


void addRoom(LEVEL *lvl, ROOM *room) {
  lvl->nRooms++;
  lvl->rooms = realloc(lvl->rooms, lvl->nRooms*sizeof(ROOM));
  lvl->rooms[lvl->nRooms-1] = *room;
}

void deleteRoom(LEVEL *lvl, unsigned int n) {
  int i;
  
  lvl->nRooms--;
  
  for(i = n; i < lvl->nRooms; i++)
    lvl->rooms[i] = lvl->rooms[i+1];
  
  lvl->rooms = realloc(lvl->rooms, lvl->nRooms*sizeof(ROOM));
}

void addVertex(ROOM *room, VERTEX *v) {
  room->nVertices++;
  room->vertices = realloc(room->vertices, room->nVertices*sizeof(VERTEX));
  room->vertices[room->nVertices-1] = *v;
}

void insertVertex(ROOM *room, VERTEX *v, unsigned int n) {
  int i;
  
  if(n > room->nVertices)
    n = room->nVertices;
  
  room->nVertices++;
  room->vertices = realloc(room->vertices, room->nVertices*sizeof(VERTEX));
  
  for(i = room->nVertices-1; i > n; i--)
    room->vertices[i] = room->vertices[i-1];
  
  room->vertices[n] = *v;
}

void deleteVertex(ROOM *room, unsigned int n) {
  int i;
  
  room->nVertices--;
  
  for(i = n; i < room->nVertices; i++)
    room->vertices[i] = room->vertices[i+1];
  
  room->vertices = realloc(room->vertices, room->nVertices*sizeof(VERTEX));
}

void freeLevel(LEVEL *lvl) {
  int i;
  
  if(lvl) {
    if(lvl->rooms) {
      for(i = 0; i < lvl->nRooms; i++) {
        if(lvl->rooms[i].vertices)
          free(lvl->rooms[i].vertices);
      }
      
      free(lvl->rooms);
    }
    
    free(lvl);
  }
}