<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html> <head> <title>CIYAM AT - Use Case: Lottery</title> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/> <meta name="copyright" content="Copyright 2015 CIYAM Developers"/> <link rel="stylesheet" href="document.css" type="text/css"/> </head> <div id="content"> <div id="header"> <div id="appname"><a href="//ciyam.org/at">AT</a></div> <h3 class="right-top">Use Case: Lottery</h3> </div> <div id="main"> <div id="text"> <pre> Use Case: Lottery ----------------- A lottery where the highest ticket "value" in a given time period will be rewarded the AT's balance. A ticket is expected to be the hash of adding a tx id to a future block id. Minimum ticket price is set at 1 unit (and this can be changed via the @min_amount variable). Variables --------- @00 ==> @timestamp @01 ==> @payout_time @02 ==> @txid @03 ==> @tx_time @04 ==> @tx_info @05 ==> @best_ticket @06 ==> @best_account @07 ==> @balance @08 ==> @tx_amount @09 ==> @min_amount @0a ==> @target_account Functions --------- 20 (0x14) = get a time stamp value for the last block in the blockchain 21 (0x15) = get txid for the first tx after the provided time stamp 22 (0x16) = get a time stamp value for a given txid 23 (0x17) = get ticket for a given txid 24 (0x18) = get source account/address for a given txid 27 (0x1b) = get funds amount for a given txid 28 (0x1c) = get tx type and subtype for a given txid 31 (0x1f) = pay given funds amount to a given account/address 32 (0x20) = get old balance of own account 33 (0x21) = pay old balance to a given account/address Sample Function Data -------------------- balance 1000 function 020 0x0000000000012345 true function +021 0x0000000000000064,0x0000000000000065,0x0000000000000066,0x0000000000000067,0x0000000000000000 false function 022 0x00000000000a5da8,0x00000000000a5db8,0x00000000000a5dc4,0x00000000000a5dc8,0x0000000000000000 false function 023 0x000000000000ff00,0x000000000000ee00,0x000000000000fff0,0x000000000000ffff,0x0000000000000000 false function 024 0x1111000000000000,0x2222000000000000,0x3333000000000000,0x4444000000000000,0x0000000000000000 false function 027 0x0000000000000064,0x0000000000000062,0x0000000000000128,0x0000000000000064,0x0000000000000000 false function 028 0x0000000000000000 true Sample Run Output ----------------- func: 20 rc: 0000000000012345 func1: 21 with 74565 rc: 0000000000000064 func1: 22 with 100 rc: 00000000000a5da8 func1: 27 with 100 rc: 0000000000000064 func1: 28 with 100 rc: 0000000000000000 func1: 23 with 100 rc: 000000000000ff00 func1: 24 with 100 rc: 1111000000000000 func1: 21 with 679336 rc: 0000000000000065 func1: 22 with 101 rc: 00000000000a5db8 func1: 27 with 101 rc: 0000000000000062 func1: 24 with 101 rc: 2222000000000000 payout 98 to account: 2222000000000000 func1: 21 with 679352 rc: 0000000000000066 func1: 22 with 102 rc: 00000000000a5dc4 func1: 27 with 102 rc: 0000000000000128 func1: 24 with 102 rc: 3333000000000000 payout 196 to account: 3333000000000000 func1: 28 with 102 rc: 0000000000000000 func1: 23 with 102 rc: 000000000000fff0 func1: 24 with 102 rc: 3333000000000000 func1: 21 with 679364 rc: 0000000000000067 func1: 22 with 103 rc: 00000000000a5dc8 func: 32 rc: 0000000000000285 payout 642 to account: 3689292519746568192 func1: 33 with 3689292519746568192 rc: 0000000000000000 (stopped - zero balance) Script Assembly --------------- if @timestamp not zero goto loop 1e0000000039 set @min_amount to 100 (1 unit) 01090000006400000000000000 get last block timestamp and put in @timestamp 35140000000000 :init (0000001a) set @payout_time to $timestamp 020100000000000000 set @tx_info to (604800 seconds in a week) 0104000000803a090000000000 add @tx_info to @payout_time 060100000004000000 :loop (00000039) get tx at after @timestamp and store in @txid 3615000200000000000000 if @txid is zero finish 2602000000 get timestamp for @txid and store in @tx_time 3616000300000002000000 if @tx_time > @payout_time goto payout 1f030000000100000072 get amount for @txid and store in @tx_amount 361b000800000002000000 if @tx_amount == @min_amount goto continue 2308000000090000000f goto refund 1af3000000 :continue (00000078) get tx type for @txid and store in @tx_info 361c000400000002000000 if @tx_info is non-zero goto skip 1e0400000035 get ticket for @txid and store in @tx_info 3617000400000002000000 if @tx_info zero finish 26040000007f if @tx_info < @best_ticket goto skip 2004000000050000001e set @best_ticket to @tx_info 020500000004000000 get account for @txid and put in @best_account 3618000600000002000000 :skip (000000b8) set @timestamp to @tx_time 020000000003000000 goto loop 1a39000000 :payout (000000c6) get old balance and store in @balance 35200007000000 if @balance is zero goto empty 1b0700000018 if @best_ticket is zero goto empty 1b0500000012 pay balance to @best_account 33210006000000 goto finish_payout 1a31010000 :empty (000000e5) set @timestamp to @tx_time 020000000003000000 goto init 1a1a000000 :refund (000000f3) get account for @tx_id and put in @target_account 3618000a00000002000000 if @tx_amount < @min_amount goto :refund_less 20080000000900000023 subtract @min_amount from @tx_amount 070800000009000000 send @tx_amount to @target_account 341f00080000000a000000 goto continue 1a78000000 :refund less (00000121) send @tx_amount to @target_account 341f00080000000a000000 goto skip 1ab8000000 :finish_payout (00000131) set @timestamp to @payout_time 020000000004000000 clear @best_ticket to zero 0305000000 goto init 1a1a000000 Assembly Code ------------- 00000000* BNZ $00000000 :00000039 00000006 SET @00000009 #0000000000000064 00000013 FUN @00000000 20 0000001a SET @00000001 $00000000 00000023 SET @00000004 #0000000000093a80 00000030 ADD @00000001 $00000004 00000039 FUN @00000002 21 $00000000 00000044 FIZ @00000002 00000049 FUN @00000003 22 $00000002 00000054 BGT $00000003 $00000001 :000000c6 0000005e FUN @00000008 27 $00000002 00000069 BEQ $00000008 $00000009 :00000078 00000073 JMP :000000f3 00000078 FUN @00000004 28 $00000002 00000083 BNZ $00000004 :000000b8 00000089 FUN @00000004 23 $00000002 00000094 FIZ @00000004 00000099 NOP 0000009a BLT $00000004 $00000005 :000000b8 000000a4 SET @00000005 $00000004 000000ad FUN @00000006 24 $00000002 000000b8 SET @00000000 $00000003 000000c1 JMP :00000039 000000c6 FUN @00000007 32 000000cd BZR $00000007 :000000e5 000000d3 BZR $00000005 :000000e5 000000d9 FUN 33 $00000006 000000e0 CLR @00000005 000000e5 SET @00000000 $00000003 000000ee JMP :0000001a 000000f3 FUN @0000000a 24 $00000002 000000fe BLT $00000008 $00000009 :0000012c 00000108 SUB @00000008 $00000009 00000111 FUN 31 $0000000a $00000002 0000011c JMP :00000078 00000121 FUN 31 $00000008 $0000000a 0000012c JMP :000000b8 Machine Code ------------ 1e000000003901090000006400000000000000351400000000000201000000000000000104000000803a0900000000000601 000000040000003615000200000000000000260200000036160003000000020000001f030000000100000072361b00080000 00020000002308000000090000000f1af3000000361c0004000000020000001e040000003536170004000000020000002604 0000007f2004000000050000001e02050000000400000036180006000000020000000200000000030000001a390000003520 00070000001b07000000181b0500000012332100060000001a310100000200000000030000001a1a0000003618000a000000 0200000020080000000900000023070800000009000000341f00080000000a0000001a78000000341f00080000000a000000 1ab800000002000000000400000003050000001a1a000000 </pre> </div> </div> <div style="visibility: visible;" id="footer"> <p> <div class="footer-icon"><a target="_blank" href="//ciyam.org/"><img src="logo-gryscl-128.png" /></a></div> © 2012-2015 CIYAM Developers </p> </div> </body> </html>