Fantastic 5 is a Football Fantasy blockchain built using Cosmos SDK and Tendermint and created with Ignite CLI.
For those who are new to Football Fantasy, it is a game where you can create your own team with your favorite players and compete with other teams. The performance of the players in the real world will be used to calculate the points of the teams. The team with the highest points will be the winner. More information can be found here.
In this blockchain, we downsized the game to 5 players per team. Each goal scored by the player will be 6 points and each assist will be 3 points. Captain of the team will get double points. If 2 or more teams have the same points, the team that submitted the transaction earlier will be ranked higher.
Coming soon...
To start the blockchain.
ignite chain serve
# for resetting the blockchain state
ignite chain serve --reset-once
Ok, now the blockchain is running. Let's keep it and open another terminal.
To save some alias for the addresses so that we can use them later.
export alice=$(fantasfived keys show alice -a)
export bob=$(fantasfived keys show bob -a)
In this example, Alice and Bob addresses are cosmos1anwhl0pavlq0s033gp5n9nq94vytj2ac3ne9fv and cosmos13ze49rf37h9tq46mydmsllaemhwn0l5jpgsswa respectively.
fantasfived query fantasfive show-mw-info
This should return:
MwInfo:
nextId: "1"
Which means that the current Matchweek is 1.
fantasfived tx fantasfive create-team Ron Ney Mes Mba Sal --from $alice --gas auto
This means that Alice creates a team with the players: Ron, Ney, Mes, Mba, Sal. There will be a prompt to confirm the transaction. Type y to confirm.
Let's create some more teams.
fantasfived tx fantasfive create-team Ras Ant San Lis Ona --from $alice --gas auto
fantasfived tx fantasfive create-team Son Jam Rom Ric Kul --from $bob --gas auto
fantasfived tx fantasfive create-team Hal Kev Kyl Rub Ede --from $bob --gas auto
fantasfived query fantasfive list-stored-team
This should return:
...
- captainIndex: "0"
index: "0"
mwId: "1"
owner: cosmos1anwhl0pavlq0s033gp5n9nq94vytj2ac3ne9fv
players: Ron-Ney-Mes-Mba-Sal
points: "-1"
rank: "0"
- captainIndex: "0"
index: "1"
mwId: "1"
owner: cosmos1anwhl0pavlq0s033gp5n9nq94vytj2ac3ne9fv
players: Ras-Ant-San-Lis-Ona
points: "-1"
rank: "0"
- captainIndex: "0"
index: "2"
mwId: "1"
owner: cosmos13ze49rf37h9tq46mydmsllaemhwn0l5jpgsswa
players: Son-Jam-Rom-Ric-Kul
points: "-1"
rank: "0"
- captainIndex: "0"
index: "3"
mwId: "1"
owner: cosmos13ze49rf37h9tq46mydmsllaemhwn0l5jpgsswa
players: Hal-Kev-Kyl-Rub-Ede
points: "-1"
rank: "0"
mwId represents the Matchweek that the team is participating in.
-1 Points and 0 Rank mean that the Matchweek has not announced the performance of the players yet.
ps. For simplicity, we determine the first player in the team as the captain.
fantasfived tx fantasfive announce-and-create-next-mw 1 Son-4-9-Kane-1-0-Ric-1-1-Hal-9-3 --from $alice --gas auto
This means that Alice (someone trustworthy) announces the performance of the players in the Matchweek 1. The performance is: Son Scored 4 goals, 9 assists, Kane Scored 1 goal, 0 assists and so on.
This will also create the next Matchweek.
There will be a prompt to confirm the transaction. Type y to confirm.
fantasfived query fantasfive list-stored-team
This should return:
...
- captainIndex: "0"
index: "0"
mwId: "1"
owner: cosmos1hw33pv2048nmur5vazk0xgnh06dytnvahz7tsp
players: Ron-Ney-Mes-Mba-Sal
points: "0"
rank: "3"
- captainIndex: "0"
index: "1"
mwId: "1"
owner: cosmos1hw33pv2048nmur5vazk0xgnh06dytnvahz7tsp
players: Ras-Ant-San-Lis-Ona
points: "0"
rank: "4"
- captainIndex: "0"
index: "2"
mwId: "1"
owner: cosmos13evd8w4nejh57v7y8q3g2rhrmtldtyqup4ps9j
players: Son-Jam-Rom-Ric-Kul
points: "111"
rank: "2"
- captainIndex: "0"
index: "3"
mwId: "1"
owner: cosmos13evd8w4nejh57v7y8q3g2rhrmtldtyqup4ps9j
players: Hal-Kev-Kyl-Rub-Ede
points: "126"
rank: "1"
This means that TeamId (index) 3 is the winner of the Matchweek 1 with 126 points and TeamId 2 is the runner-up with 111 points.
TeamId 0 and 1 got 0 points because they did not have any players that scored or assisted in the Matchweek 1.
ps. TeamId 0 ranked higher than TeamId 1 because the TeamId 0 submitted the transaction earlier.
fantasfived query fantasfive show-mw-info
This should return:
MwInfo:
nextId: "2"
Which means that the Matchweek is currently 2.
The process can be repeated for the next Matchweek and so on.
For each actions, there will be an event emitted. For example, when Alice announces the performance of the players in the Matchweek 1, there will be an event emitted like this:
{
"type": "match-week-announced",
"attributes": [
{
"key": "announcer",
"value": "cosmos1anwhl0pavlq0s033gp5n9nq94vytj2ac3ne9fv"
},
{
"key": "mw-id",
"value": "1"
},
{
"key": "team-count",
"value": "4"
},
{
"key": "winner-team-id",
"value": "3"
},
{
"key": "players-performance",
"value": "Son-4-9-Kane-1-0-Ric-1-1-Hal-9-3"
}
]
}
- Players should be represented with integers of PlayerId instead of names in the production level.
StoredTeamshould be scaffolded withlist.- There should be an
sdk.Msgfor listing teams in a specific Matchweek. - Reward Distribution should be implemented within
x/fantasfive/keeper/msg_server_announce_and_create_next_mw.go.