done

Author: caoyang2002

100243410/chain/Move.toml

@@ -0,0 +1,15 @@
+[package]
+name = "randoom"
+version = "1.0.0"
+authors = []
+
+[addresses]
+cccy = ""
+[dev-addresses]
+
+[dependencies.AptosFramework]
+git = "https://github.com/aptos-labs/aptos-core.git"
+rev = "devnet"
+subdir = "aptos-move/framework/aptos-framework"
+
+[dev-dependencies]

100243410/chain/sources/rand.move

@@ -0,0 +1,87 @@
+module cccy::randoom{
+    use std::signer;
+    use std::vector;
+    use aptos_std::smart_vector;
+    use aptos_std::smart_vector::SmartVector;
+    use aptos_framework::aptos_coin::AptosCoin;
+    use aptos_framework::coin;
+    use aptos_framework::coin::Coin;
+    use aptos_framework::event;
+    use aptos_framework::randomness;
+	
+    #[event]
+    struct Event<T> has drop,store{
+        value: T
+    }
+
+    #[event]
+    struct Winner has drop,store{ \
+        value: address
+    }
+
+    entry fun random_u8(){
+        event::emit(
+            Event{
+           
+                value:randomness::u8_integer()
+            }
+        );
+    }
+    fun init_module(caller:&signer){
+        move_to(caller,Pools{
+        	titckets_user: smart_vector::empty(),
+            
+            coins:coin::zero(),
+            
+            is_closed:false
+        })
+    }
+
+    struct Pools has key {
+    		
+        titckets_user: SmartVector<address>,
+        number:vector<u64>,
+        coins:Coin<AptosCoin>,
+        is_closed:bool
+    }
+
+    
+    public fun get_ticket_price():u64{TICKET_PRICE}
+    const TICKET_PRICE:u64 = 10_000;
+
+    entry fun pick_winner() acquires Pools {
+        draw_winner();
+    }
+
+    
+     fun draw_winner() acquires Pools{
+     		
+        let pool = borrow_global_mut<Pools>(@cccy);
+               assert!(!pool.is_closed,HAS_CLOSE); // close ?
+                assert!(!smart_vector::is_empty(&pool.titckets_user),NO_TICKETS); // buy tickets ?
+        
+        let winner_id = randomness::u64_range(0,smart_vector::length(&pool.titckets_user));
+       
+        let winner = *smart_vector::borrow(&pool.titckets_user,winner_id);
+        
+        let coins = coin::extract_all(&mut pool.coins);
+    
+        coin::deposit<AptosCoin>(winner,coins);
+
+        pool.is_closed = true;
+
+        event::emit(
+            Winner{
+                value:winner
+            }
+        );
+    }
+
+    const HAS_CLOSE:u64 = 403; 
+    const NO_TICKETS:u64 = 404; 
+
+    #[test_only]
+    public(friend) fun init_module_test(caller:&signer)  {
+        init_module(caller);
+    }
+}