item_ptr Item::Generate() {
Die die = {1, ITEM_RANGED + 1, -1};
uint cat = DieRoll::Roll(die);
item_ptr item;
switch(cat) {
case ITEM_ARMOUR:
die.Set(1, sizeof(armourTemplates)/sizeof(armourTemplates[0]), -1);
item = std::make_shared<Armour>(armourTemplates[DieRoll::Roll(die)]);
break;
case ITEM_WEAPON:
die.Set(1, sizeof(weaponTemplates)/sizeof(weaponTemplates[0]), -1);
item = std::make_shared<Weapon>(weaponTemplates[DieRoll::Roll(die)]);
break;
case ITEM_RANGED:
die.Set(1, sizeof(rangedTemplates)/sizeof(rangedTemplates[0]), -1);
item = std::make_shared<Ranged>(rangedTemplates[DieRoll::Roll(die)]);
break;
default:
item = std::make_shared<Item>("Nothing", 255, 255, 0);
}
return item;
}
void Level::Generate() {
// allocate memory for levels
Tile** new_map = new Tile* [_h];
Tile** flooded_map = new Tile* [_h];
for(uint i = 0; i < _h; i++) {
new_map[i] = new Tile [_w];
flooded_map[i] = new Tile [_w];
}
while(1) {
// randomly fill starting level
for(uint y = 1; y < _h -1; y++) {
for(uint x = 1; x < _w; x++) {
_map[y][x] = tiles[randpick()];
}
}
// fill temp level with walls
for(uint y = 0; y < _h; y++) {
for(uint x = 0; x < _w; x++) {
new_map[y][x] = tiles[MAP_WALL];
}
}
// ensure the level has outer walls
for(uint y = 0; y < _h; y++) {
_map[y][0] = _map[y][_w-1] = tiles[MAP_WALL];
}
for(uint x = 0; x < _w; x++) {
_map[0][x] = _map[_h-1][x] = tiles[MAP_WALL];
}
// run cellular autonoma algorithm
for(uint y = 1; y < _h - 1; y++) {
for(uint x = 1; x < _w - 1; x++) {
int adjcount_r1 = 0,
adjcount_r2 = 0;
for(int i = -1; i <= 1; i++) {
for(int j = -1; j <= 1; j++) {
if(_map[y+i][x+j].type != MAP_FLOOR) adjcount_r1++;
}
}
for(uint i = y - 2; i <= y + 2; i++) {
for(uint j = x - 2; j <= x + 2; j++) {
if(abs(i-y) == 2 && abs(j-x) == 2) continue;
if(i >= _h || j >= _w) continue;
if(_map[i][j].type != MAP_FLOOR) adjcount_r2++;
}
}
// select new tile for this position
if(adjcount_r1 >= _r1_cutoff || adjcount_r2 <= _r2_cutoff) {
new_map[y][x] = tiles[MAP_WALL];
}
else {
new_map[y][x] = tiles[MAP_FLOOR];
}
}
}
// flood map from random floor cell
int rnd_x, rnd_y;
while(1) {
rnd_x = rand() % _w;
rnd_y = rand() % _h;
if(new_map[rnd_y][rnd_x].type == MAP_FLOOR) break;
}
for(uint y = 0; y < _h; y++) {
for(uint x = 0; x < _w; x++) {
flooded_map[y][x] = tiles[MAP_WALL];
}
}
floodmap(new_map, flooded_map, rnd_x, rnd_y);
// ensure that at least 1/2 of the map is floor
uint floorcount = 0;
for(uint y = 0; y < _h; y++) {
for(uint x = 0; x < _w; x++) {
if(flooded_map[y][x].type == MAP_FLOOR) floorcount++;
}
}
if(floorcount > (_w*_h)/2) break;
}
// place stairs
int rnd_x, rnd_y;
while(1) {
rnd_x = rand() % _w;
rnd_y = rand() % _h;
if(flooded_map[rnd_y][rnd_x].type == MAP_FLOOR) {
flooded_map[rnd_y][rnd_x] = tiles[MAP_STAIR_DOWN];
_stairDown.x = rnd_x;
_stairDown.y = rnd_y;
break;
}
}
while(1) {
rnd_x = rand() % _w;
rnd_y = rand() % _h;
if(flooded_map[rnd_y][rnd_x].type == MAP_FLOOR) {
flooded_map[rnd_y][rnd_x] = tiles[MAP_STAIR_UP];
_stairUp.x = rnd_x;
_stairUp.y = rnd_y;
break;
}
}
// replace map with new one
for(uint y = 1; y < _h - 1; y++) {
for(uint x = 1; x < _w -1; x++) {
_map[y][x] = flooded_map[y][x];
}
}
// free memory used up by temporary maps
for(uint i = 0; i < _h; i++) {
delete [] new_map[i];
delete [] flooded_map[i];
}
delete [] new_map;
delete [] flooded_map;
// scatter items around level
for(uint i = 0; i < LEVEL_HEIGHT / 2; i++) {
Die tmp = {1, _h-1, 0};
uint y = DieRoll::Roll(tmp);
tmp.Set(1, _w-1, 0);
uint x = DieRoll::Roll(tmp);
if(_map[y][x].type == MAP_FLOOR) _map[y][x].items.push_back(Item::Generate());
}
}
