void Map::drawMap(int x_offset, int y_offset, int scr_width, int scr_height) {
const std::vector<Tmx::Layer*> &layers = this->map->GetLayers();
int tile_id = 0;
int tileset_i = -1;
int tile_w = this->map->GetTileWidth();
int tile_h = this->map->GetTileHeight();
Tmx::Layer* layer;
// Draw all layers from bottom to top.
for(int i = 0; i < layers.size(); ++i){
layer = layers[i];
// Set tile edges of the layer portion to be drawn.
int start_x = 0;
int end_x = layer->GetWidth() - 1;
int start_y = 0;
int end_y = layer->GetHeight() - 1;
// Clip off-screen map tiles.
if(x_offset + scr_width < (layer->GetWidth() - 1) * tile_w) {
end_x = (x_offset + scr_width) / tile_w;
}
if(y_offset + scr_height < (layer->GetHeight() - 1) * tile_h) {
end_y = (y_offset + scr_height) / tile_h;
}
if(x_offset > tile_w) {
start_x = x_offset / tile_w;
}
if(y_offset > tile_h) {
start_y = y_offset / tile_h;
}
// Draw all tiles in this layer after clipping.
for(int y = start_y; y <= end_y; ++y){
for(int x = start_x; x <= end_x; ++x){
tile_id = layer->GetTile(x, y).id;
tileset_i = layer->GetTile(x,y).tilesetId;
int x_pos = x * tile_w - x_offset;
int y_pos = y * tile_h - y_offset;
if(tileset_i != -1){
this->drawTile(tile_id, tileset_i, x_pos, y_pos);
}
}
}
}
}
std::vector<Entity*>
GetEntities(
const Tmx::Map& aMap,
int roomX,
int roomY,
int roomW,
int roomH,
std::string aLayerName)
{
const std::vector<Tmx::Layer*> layers = aMap.GetLayers();
Tmx::Layer* layer = 0;
for (unsigned int i = 0; i < layers.size(); i++)
{
if (layers[i]->GetName() == aLayerName)
{
layer = layers[i];
break;
}
}
std::vector<Entity*> entities;
if (layer == 0) {
return entities;
}
for (int y = 0; y < roomH; y++) {
for (int x = 0; x < roomW; x++) {
Tmx::MapTile tile = layer->GetTile(x + roomX, y + roomY);
const Tmx::Tileset *tileset = aMap.FindTileset(tile.gid);
if (!tileset) {
continue;
}
int firstGid = tileset->GetFirstGid();
int entityId = tile.gid - firstGid;
Entity* entity = EntityFactory::create(entityId);
if (!entity)
{
continue;
}
float2 pos(aMap.GetTileWidth() * x + aMap.GetTileWidth() / 2, aMap.GetTileHeight() * (y + 1));
pos.y -= entity->getHalfSize().y;
entity->setInitialPosition(pos);
entities.push_back(entity);
}
}
return entities;
}