2 things:
1) Monster's blip in the radar updates position only when radar line hits it
2) Play blip sound when that happens
Merge remote-tracking branch 'origin/master'
3 things:
1) Made monsterReachedYou BOOL which becomes YES when monsterMovement finishes
2) [self attack] is called every 1000 milliseconds if monsterReachedYou is YES
3) Added completion block to attack SKAction: player's health -= 1 and flash is played when attack animation finishes