Add youtube video demo to README, fix LogicalGates having no texture, because no value, fix gate zoom scaling applying to non-label gates

README.md

@@ -1 +1,21 @@
 Logical Signals is a game where you have to direct and change signals with logical gates to meet the end result.
+
+Demo video:
+[![Demo Video](https://img.youtube.com/vi/OPEPoMZabS4/hqdefault.jpg)](https://youtu.be/OPEPoMZabS4)
+
+# How to play:
+- You can move gates by dragging their buttons (not the plus ones)
+- To create connections, click on the + buttons (left for input, right for output)
+- To remove connections, right click the connnection line
+- On levels, a node has to have 2 inputs(Except the OUTPUT and NOT node), but only 1 output
+- On DIY mode, a node can have more than 2 inputs, except for OUTPUT and NOT
+- You can change an INPUT's gate value by clicking on it
+- You have to connect the nodes in a way to meet the required result
+                                                     
+# Logical Gates explanation:
+- AND: Returns 1 if all inputs are 1, otherwise 0
+- OR: Returns 1 if any inputs are 1, otherwise 0
+- NAND: Returns 1 if any inputs are 0, otherwise 0
+- NOR: Returns 1 if all inputs are 0, otherwise 0
+- XOR: Returns 1 if atleast 1 input is different, otherwise 0
+- XNOR: Returns 1 if all inputs are the same, otherwise 0

game/play.py

@@ -17,6 +17,8 @@ class LogicalGate(arcade.Sprite):
         self.input: list[LogicalGate] = []
         self.output: LogicalGate | None = None
 
+        self.calculate_value()
+
     def calculate_value(self):
         if self.gate_type == "OUTPUT" and self.input:
             self.value = self.input[0].calculate_value()
@@ -357,6 +359,7 @@ class Game(arcade.gui.UIView):
 
         gate: arcade.gui.UIInputText
         for gate in self.gates:
+            if gate.gate_type == "LABEL":
                 if scroll_y == 1:
                     gate.scale(1.1)
                 else: