feat(players): suport del segon jugador amb events amb player_id

source/game/map/paint_layer.cpp

@@ -60,8 +60,11 @@ PaintLayer::PaintLayer(const Tilemap& tilemap, EventBus* bus)
         // (sòl transitable) via `Map::isPaintable` i, si aplica, marquem
         // i re-publiquem `tile_painted` amb només la posició.
         on_tile_sub_ = bus_->subscribe("on_tile_entered", [this](const Event& ev) {
+            // Re-propaguem el `player_id` de qui ha trepitjat la cel·la, perquè
+            // `tile_painted` (que consumeixen els sarcòfags i el HUD futur)
+            // sàpiga quin jugador ha pintat.
             const auto* paint = std::get_if<PaintedTile>(&ev.payload);
-            if (paint != nullptr) { tryPaint(paint->col, paint->row, paint->tile_index); }
+            if (paint != nullptr) { tryPaint(paint->col, paint->row, paint->tile_index, ev.player_id); }
         });
     }
 
@@ -79,7 +82,7 @@ auto PaintLayer::isPainted(int col, int row) const -> bool {
     return painted_[static_cast<std::size_t>(row)][static_cast<std::size_t>(col)] >= 0;
 }
 
-auto PaintLayer::tryPaint(int col, int row, int tile_index) -> bool {
+auto PaintLayer::tryPaint(int col, int row, int tile_index, int player_id) -> bool {
     if (col < 0 || col >= cols_ || row < 0 || row >= rows_) { return false; }
     if (tile_index < 0) { return false; }
     if (painted_[static_cast<std::size_t>(row)][static_cast<std::size_t>(col)] >= 0) {
@@ -92,7 +95,11 @@ auto PaintLayer::tryPaint(int col, int row, int tile_index) -> bool {
     blitPaintTile(col, row, tile_index);
 
     if (bus_ != nullptr) {
-        bus_->publish("tile_painted", TilePos{.col = col, .row = row});
+        bus_->publish(Event{
+            .name = "tile_painted",
+            .payload = TilePos{.col = col, .row = row},
+            .player_id = player_id,
+        });
     }
     return true;
 }