default block properties

azalea-block/block-macros/src/lib.rs

@@ -20,10 +20,14 @@ struct PropertyDefinitions {
     properties: Vec<PropertyDefinition>,
 }
 
+struct PropertyAndDefault {
+    name: Ident,
+    default: Ident,
+}
 struct BlockDefinition {
     name: Ident,
     behavior: Expr,
-    properties: Punctuated<Ident, Token![,]>,
+    properties_and_defaults: Vec<PropertyAndDefault>,
 }
 struct BlockDefinitions {
     blocks: Vec<BlockDefinition>,
@@ -39,14 +43,14 @@ impl Parse for PropertyDefinition {
         //     Floor,
         //     Wall,
         //     Ceiling
-        // };
+        // },
         let name = input.parse()?;
 
         let content;
         braced!(content in input);
         let variants = content.parse_terminated(Ident::parse)?;
 
-        input.parse::<Token![;]>()?;
+        input.parse::<Token![,]>()?;
         Ok(PropertyDefinition { name, variants })
     }
 }
@@ -66,11 +70,11 @@ impl Parse for PropertyDefinitions {
 
 impl Parse for BlockDefinition {
     fn parse(input: ParseStream) -> Result<Self> {
-        //     acacia_button => BlockBehavior { has_collision: false }, {
+        //     acacia_button => BlockBehavior::default().no_collision(), {
         //         Face,
         //         Facing,
         //         Powered
-        //     };
+        //     },
         let name = input.parse()?;
         input.parse::<Token![=>]>()?;
         let behavior = input.parse()?;
@@ -78,12 +82,29 @@ impl Parse for BlockDefinition {
         input.parse::<Token![,]>()?;
         let content;
         braced!(content in input);
-        let properties = content.parse_terminated(Ident::parse)?;
-        input.parse::<Token![;]>()?;
+
+        let mut properties_and_defaults = Vec::new();
+
+        loop {
+            let property = match content.parse() {
+                Ok(property) => property,
+                Err(_) => break,
+            };
+            content.parse::<Token![=]>()?;
+            let property_default = content.parse()?;
+            properties_and_defaults.push(PropertyAndDefault {
+                name: property,
+                default: property_default,
+            });
+            if content.parse::<Token![,]>().is_err() {
+                break;
+            }
+        }
+        input.parse::<Token![,]>()?;
         Ok(BlockDefinition {
             name,
             behavior,
-            properties,
+            properties_and_defaults,
         })
     }
 }
@@ -109,6 +130,8 @@ impl Parse for MakeBlockStates {
         braced!(content in input);
         let properties = content.parse()?;
 
+        input.parse::<Token![,]>()?;
+
         let blocks_ident = input.parse::<Ident>()?;
         assert_eq!(blocks_ident.to_string(), "Blocks");
         input.parse::<Token![=>]>()?;
@@ -183,9 +206,9 @@ pub fn make_block_states(input: TokenStream) -> TokenStream {
     let mut from_state_to_block_match = quote! {};
     for block in &input.block_definitions.blocks {
         let block_property_names = &block
-            .properties
+            .properties_and_defaults
             .iter()
-            .map(|p| p.to_string())
+            .map(|p| p.name.to_string())
             .collect::<Vec<_>>();
         let mut block_properties_vec = Vec::new();
         for property_name in block_property_names {
@@ -200,7 +223,7 @@ pub fn make_block_states(input: TokenStream) -> TokenStream {
         //     pub facing: properties::Facing,
         //     pub powered: properties::Powered,
         let mut block_struct_fields = quote! {};
-        for property in &block.properties {
+        for PropertyAndDefault { name: property, .. } in &block.properties_and_defaults {
             let property_name_snake =
                 Ident::new(&property.to_string(), proc_macro2::Span::call_site());
             block_struct_fields.extend(quote! {
@@ -268,12 +291,16 @@ pub fn make_block_states(input: TokenStream) -> TokenStream {
         // }
         let mut from_state_to_block_inner = quote! {};
         let mut division = 1usize;
-        for i in (0..block.properties.len()).rev() {
-            let property = &block.properties[i];
+        for i in (0..block.properties_and_defaults.len()).rev() {
+            let PropertyAndDefault {
+                name: property_name,
+                ..
+            } = &block.properties_and_defaults[i];
+
             let property_variants = &block_properties_vec[i];
             let property_variants_count = property_variants.len();
             from_state_to_block_inner.extend(quote! {
-                #property: #property::from((b / #division) % #property_variants_count),
+                #property_name: #property_name::from((b / #division) % #property_variants_count),
             });
 
             division *= property_variants_count;
@@ -289,6 +316,17 @@ pub fn make_block_states(input: TokenStream) -> TokenStream {
             },
         });
 
+        let mut block_default_fields = quote! {};
+        for PropertyAndDefault {
+            name: property,
+            default: property_default,
+        } in &block.properties_and_defaults
+        {
+            block_default_fields.extend(quote! {
+                #property: #property::#property_default,
+            })
+        }
+
         let block_behavior = &block.behavior;
         let block_id = block.name.to_string();
         let block_struct = quote! {
@@ -314,6 +352,13 @@ pub fn make_block_states(input: TokenStream) -> TokenStream {
                 }
             }
 
+            impl Default for #block_struct_name {
+                fn default() -> Self {
+                    Self {
+                        #block_default_fields
+                    }
+                }
+            }
         };
 
         block_structs.extend(block_struct);

azalea-block/src/blocks.rs

@@ -12,43 +12,43 @@ make_block_states! {
             Floor,
             Wall,
             Ceiling
-        };
+        },
         Facing {
             North,
             South,
             West,
             East
-        };
+        },
         Powered {
             True,
             False
-        };
+        },
         Half {
             Upper,
             Lower
-        };
+        },
         Hinge {
             Left,
             Right
-        };
+        },
         Open {
             True,
             False
-        };
-    }
+        },
+    },
     Blocks => {
         acacia_button => BlockBehavior::default().no_collision(), {
-            Face,
-            Facing,
-            Powered
-        };
+            Face=Floor,
+            Facing=North,
+            Powered=True
+        },
         acacia_door => BlockBehavior::default(), {
-            Facing,
-            Half,
-            Hinge,
-            Open,
-            Powered
-        };
+            Facing=North,
+            Half=Upper,
+            Hinge=Left,
+            Open=True,
+            Powered=True
+        },
     }
 }
 

codegen/lib/code/blocks.py

@@ -1,5 +1,6 @@
+from lib.utils import to_camel_case
 from lib.utils import get_dir_location
-
+import json
 
 BLOCKS_RS_DIR = get_dir_location('../azalea-block/src/blocks.rs')
 
@@ -11,10 +12,45 @@ def generate_blocks(blocks: dict):
     new_make_block_states_macro_code = []
     new_make_block_states_macro_code.append('make_block_states! {')
 
+    # Find properties
     properties = {}
-    for block_name, block_data in blocks.items():
-        block_properties = block_data['properties']
-
+    for block_data in blocks.values():
+        block_properties = block_data.get('properties', {})
         properties.update(block_properties)
 
-    print(properties)
+    # Property codegen
+    new_make_block_states_macro_code.append('    Properties => {')
+    for property_name, property_variants in properties.items():
+        new_make_block_states_macro_code.append(
+            f'        {to_camel_case(property_name)} => {{')
+
+        for variant in property_variants:
+            new_make_block_states_macro_code.append(
+                f'            {to_camel_case(variant)},')
+
+        new_make_block_states_macro_code.append(
+            f'        }},')
+    new_make_block_states_macro_code.append('    },')
+
+    # Block codegen
+    new_make_block_states_macro_code.append('    Blocks => {')
+    for block_id, block_data in blocks.items():
+        block_id = block_id.split(':')[1]
+        block_states = block_data['states']
+
+        default_property_variants = {}
+        for state in block_states:
+            if state.get('default'):
+                default_property_variants = state.get('properties', {})
+
+        # TODO: use burger to generate the blockbehavior
+        new_make_block_states_macro_code.append(
+            f'        {block_id} => BlockBehavior::default(), {{')
+        for property in block_data.get('properties', {}):
+            property_default = default_property_variants.get(property)
+            new_make_block_states_macro_code.append(
+                f'            {to_camel_case(property)}={to_camel_case(property_default)},')
+        new_make_block_states_macro_code.append('        },')
+    new_make_block_states_macro_code.append('    },')
+
+    print('\n'.join(new_make_block_states_macro_code))

codegen/lib/utils.py

@@ -11,7 +11,12 @@ def to_snake_case(name: str):
 
 def to_camel_case(name: str):
     s = re.sub('_([a-z])', lambda m: m.group(1).upper(), name)
-    return s[0].upper() + s[1:]
+    s = s[0].upper() + s[1:]
+    # if the first character is a number, we need to add an underscore
+    # maybe we could convert it to the number name (like 2 would become "two")?
+    if s[0].isdigit():
+        s = f'_{s}'
+    return s
 
 
 def padded_hex(n: int):