Finish decompress function.

EarthboundBattleBackgrounds/EarthboundBattleBackgrounds/main.cpp

@@ -115,6 +115,7 @@ struct Rom{
 			std::vector<uint16_t>blockOutput;
 			blockOutput.resize(size);
 			decompressBlock(ptr,blockOutput);
+			return blockOutput;
 		}
 	private:
 		void decompressBlock(uint32_t ptrStart,std::vector<uint16_t>&block){
@@ -167,10 +168,11 @@ struct Rom{
 						while(len--!=0)block[bpos++]=Rom::reversedBytes[block[bpos2++]&0xFF];
 					}break;
 					case UNKNOWN_1:{
-
+						if(bpos+2*len>maxLength||bpos<0)return;
+						while(len--!=0)block[bpos++]=block[bpos2--];
 					}break;
 					case UNKNOWN_2:{
-
+						return;
 					}break;
 				}
 			}
@@ -232,8 +234,9 @@ struct Rom{
 		std::vector<uint16_t>graphicsData;
 		std::vector<Tile>tiles;
 		BackgroundGraphics(std::string_view data,uint16_t index,byte bpp){
-			DataBlock graphicsPointer{data,0xD7A1U+index*4U};
-			graphicsPointer.decompress();
+			DataBlock graphicsPtr{data,0xD7A1U+index*4U};
+			DataBlock loadGraphicsPtr{data,snesToHex(graphicsPtr.readInt32())};
+			graphicsData=loadGraphicsPtr.decompress();
 		}
 	};
 	std::string data;