Add statemachine and empty game class

1 files changed, 50 insertions, 2 deletions

diff --git a/turtetris_master/state_machine.py b/turtetris_master/state_machine.py
index 880a582..cef03e4 100644
--- a/turtetris_master/state_machine.py
+++ b/turtetris_master/state_machine.py
@@ -1,4 +1,52 @@
-#class StateMachine:
-    #"Game state machine"
+from .screen_checker import ScreenChecker
+from .game import Game
 
 
+class StateMachine:
+    "Game state machine"
+
+    def __init__(self, matrix, input):
+        "Initializes game machine"
+        self.state = "initializing"
+        self.matrix = matrix
+        self.input = input
+        self.__update_state__('screen_checker')
+
+    def __update_state__(self, state):
+        "Applies given state"
+        def __exception__():
+            raise Exception('Can\'t transfer from ' + self.state + ' to '
+                            + state)
+        if state == "screen_checker":
+            if self.state == "initializing":
+                self.screen_checker = ScreenChecker(self.matrix)
+            else:
+                __exception__()
+        elif state == "game":
+            if self.state == "screen_checker" or self.state == "game-over":
+                self.game = Game(self.matrix)
+            else:
+                __exception__()
+        elif state == "game-over":
+            if self.state != "game":
+                __exception__()
+        else:
+            __exception__()
+        self.state = state
+
+    def tick(self):
+        "Do tick"
+        inpt = self.input.check()
+        if self.state == "screen_checker":
+            if inpt['start']:
+                self.__update_state__('game')
+            else:
+                self.screen_checker.tick()
+        elif self.state == "game":
+            if not self.game.tick(inpt):
+                self.__update_state__('game-over')
+        elif self.state == "game-over":
+            if inpt['start']:
+                self.__update_state__('game')
+        else:
+            raise Exception('Invalid state ' + self.state)