koobas.hobune.stream
Spawned enemy walk from right to left destroying turrets.
Hello Everyone, I'm new in Unity game dev and have some questions. I came up with idea to make a sidescroller game, but I have some problems. 
Green objects - Turret
Pink object - Player spawn
Red object - Enemy spawner
Orange object - Village with NPC
And my question is about what should I search, and read about to make this:
I would like to make:
waves, each next wave spawn more enemy and more kind of enemy,
enemy walk from right side to left side, when on they road its a turret, they start attack, when turret its down they go further left side,
when player its in X range near enemy, enemy focus on player, when player run out, they back to attack the turret, ( when all turrets down, its game over )
drop items from enemy, how to make list of items which enemy can drop with some drop rate ( i mean 1 item i have chance 50% to drop, another 25% to drop it from monster)
Npc shop, equipment,iventory and stats I think i know how to make it.
I would ask for some tips. :)
Kind regards, Konrad
