I created a space invader watch face, and I have this code placed on the x axis (and the odd seconds for the y axis). It basically says that when the seconds reach an even number the invaders move right and at the next even number it moves back left again. Same thing was made for the y axis with odd numbers, but I have the feeling I am doing something wrong:

$#Ds#>=2&&#Ds#<4?241+6:241$&&$#Ds#>=4&&#Ds#<6?241:241+6$&&$#Ds#>=6&&#Ds#<8?241+6:241$&&$#Ds#>=8&&#Ds#<10?241:241$&&$#Ds#>=10&&#Ds#<12?241+6:241$&&$#Ds#>=12&&#Ds#<14?241:241$&&$#Ds#>=14&&#Ds#<16?241+6:241$&&$#Ds#>=16&&#Ds#<18?241:241$&&$#Ds#>=18&&#Ds#<20?241+6:241$&&$#Ds#>=20&&#Ds#<22?241:241$&&$#Ds#>=22&&#Ds#<24?241+6:241$&&$#Ds#>=24&&#Ds#<26?241:241$&&$#Ds#>=26&&#Ds#<28?241+6:241$&&$#Ds#>=28&&#Ds#<30?241:241$&&$#Ds#>=30&&#Ds#<32?241+6:241$&&$#Ds#>=32&&#Ds#<34?241:241$&&$#Ds#>=34&&#Ds#<36?241+6:241$&&$#Ds#>=36&&#Ds#<38?241:241$&&$#Ds#>=38&&#Ds#<40?241+6:241$&&$#Ds#>=40&&#Ds#<42?241:241$&&$#Ds#>=42&&#Ds#<44?241+6:241$&&$#Ds#>=44&&#Ds#<46?241:241$&&$#Ds#>=46&&#Ds#<48?241+6:241$&&$#Ds#>=48&&#Ds#<50?241:241$&&$#Ds#>=50&&#Ds#<52?241+6:241$&&$#Ds#>=52&&#Ds#<54?241:241$&&$#Ds#>=54&&#Ds#<56?241+6:241$&&$#Ds#>=56&&#Ds#<58?241:241$&&$#Ds#>=58&&#Ds#<0?241+6:241$&&$#Ds#>=0&&#Ds#<2?241:241$

Is there some easier way to set this conditionals?

BTW the moving ship is a sinus function, and the laser beam is a cosinus function, both set with your heartrate (bpm)