remove constants in decoders

internal/decoders/data_tracker_chunk.go

@@ -28,49 +28,49 @@ func decodeDataTrackerChunkData(dataTrackerChunk Chunk) DataTrackerChunkData {
 			case 0:
 				pos := DecodeDataTrackerXYZChunk(dataTrackerChunk.ChunkData[offset:])
 				data.Pos = &pos
-				offset = offset + CHUNK_HEADER_SIZE
+				offset += 4
 				if data.Pos.Chunk.Header.DataLen > 0 {
 					offset = offset + int(data.Pos.Chunk.Header.DataLen)
 				}
 			case 1:
 				speed := DecodeDataTrackerXYZChunk(dataTrackerChunk.ChunkData[offset:])
 				data.Speed = &speed
-				offset = offset + CHUNK_HEADER_SIZE
+				offset += 4
 				if data.Speed.Chunk.Header.DataLen > 0 {
 					offset = offset + int(data.Speed.Chunk.Header.DataLen)
 				}
 			case 2:
 				ori := DecodeDataTrackerXYZChunk(dataTrackerChunk.ChunkData[offset:])
 				data.Ori = &ori
-				offset = offset + CHUNK_HEADER_SIZE
+				offset += 4
 				if data.Ori.Chunk.Header.DataLen > 0 {
 					offset = offset + int(data.Ori.Chunk.Header.DataLen)
 				}
 			case 3:
 				status := DecodeDataTrackerStatusChunk(dataTrackerChunk.ChunkData[offset:])
 				data.Status = &status
-				offset = offset + CHUNK_HEADER_SIZE
+				offset += 4
 				if data.Status.Chunk.Header.DataLen > 0 {
 					offset = offset + int(data.Status.Chunk.Header.DataLen)
 				}
 			case 4:
 				accel := DecodeDataTrackerXYZChunk(dataTrackerChunk.ChunkData[offset:])
 				data.Accel = &accel
-				offset = offset + CHUNK_HEADER_SIZE
+				offset += 4
 				if data.Accel.Chunk.Header.DataLen > 0 {
 					offset = offset + int(data.Accel.Chunk.Header.DataLen)
 				}
 			case 5:
 				trgtpos := DecodeDataTrackerXYZChunk(dataTrackerChunk.ChunkData[offset:])
 				data.TrgtPos = &trgtpos
-				offset = offset + CHUNK_HEADER_SIZE
+				offset += 4
 				if data.TrgtPos.Chunk.Header.DataLen > 0 {
 					offset = offset + int(data.TrgtPos.Chunk.Header.DataLen)
 				}
 			case 6:
 				timestamp := DecodeDataTrackerTimestampChunk(dataTrackerChunk.ChunkData[offset:])
 				data.Timestamp = &timestamp
-				offset = offset + CHUNK_HEADER_SIZE
+				offset += 4
 				if data.Timestamp.Chunk.Header.DataLen > 0 {
 					offset = offset + int(data.Timestamp.Chunk.Header.DataLen)
 				}