Simpler syntax

game/scripts/01cds.rpy

@@ -91,6 +91,8 @@ python early hide:
                 chibi = eval(f"{who}_chibi")
             except Exception:
                 renpy.error(f"Character chibi not defined: {who}")
+            if not hasattr(chibi, action):
+                renpy.error(f"Chibi action not defined: {who} {action}")
 
         def predict(self):
             who, action = self
@@ -142,6 +144,23 @@ python early hide:
 
             return {"blocks": blocks}
 
+        def lint(self):
+            any_true = False
+            for block, weight, condition in self["blocks"]:
+                if not isinstance(weight, (int, float)):
+                    renpy.error(f"Weight must be a number, not {weight!r}")
+
+                if condition == "True":
+                    any_true = True
+                else:
+                    try:
+                        eval(condition)
+                    except Exception:
+                        renpy.error(f"Condition could not be evaluated: {condition!r}")
+
+            if not any_true:
+                renpy.error("All blocks have a condition, which will raise an exception if all conditions are False at the same time at runtime")
+
         def next(self):
             blocks = [(block, weight) for block, weight, condition in self["blocks"] if eval(condition)]
             total_weight = sum(weight for _, weight in blocks)

game/scripts/chibis/classes.rpy

@@ -113,7 +113,7 @@ init -1 python:
 
             # Use a tuple/list to specify the order of layers in a dict
             self.layers_order = layers
-            self.layers = dict([(k, None) for k in layers])
+            self.layers = dict.fromkeys(layers)
 
             self.update_callback = update_callback
 
@@ -124,8 +124,7 @@ init -1 python:
 
             if actions:
                 # Override class variable for this instance
-                self.actions = dict(Chibi.actions)
-                self.actions.update(actions)
+                self.actions = Chibi.actions | actions
 
             self.zorder = zorder
             self.speed = speed # pixels/sec