HelenOS sources

STOP              325 uspace/app/tetris/screen.c 			if ((i > STOP) || (sp[1] != bp[1]) || (so != bp[1]))
STOP              330 uspace/app/tetris/screen.c 			else if ((i < STOP) && (so == bp[2]) && (sp[3] != bp[3])) {
STOP              299 uspace/dist/src/c/demos/tetris/screen.c 			if ((i > STOP) || (sp[1] != bp[1]) || (so != bp[1]))
STOP              304 uspace/dist/src/c/demos/tetris/screen.c 			else if ((i < STOP) && (so == bp[2]) && (sp[3] != bp[3])) {
HelenOS homepage, sources at GitHub