135 lines
4.2 KiB
Solidity
135 lines
4.2 KiB
Solidity
// SPDX-License-Identifier: CC0-1.0
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pragma solidity ^0.8.0;
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import {ERC5050State, Action} from "./ERC5050State.sol";
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import {ERC5050, Action} from "./ERC5050.sol";
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struct TokenInfo {
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uint256 health;
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uint256 healthRemaining;
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uint256 power;
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uint256 blockedAt;
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uint256 blockPower;
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uint256 lockedUntilBlock;
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uint256 wins;
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bool hasRegistered;
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}
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interface IFightGame {
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function getStats(address _contract, uint256 _tokenId) external view returns (TokenInfo);
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}
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contract FightGame is IFightGame, ERC5050State {
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bytes4 constant LIGHT_ATTACK_SELECTOR = bytes4(keccak256("fg.light-attack"));
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bytes4 constant HEAVY_ATTACK_SELECTOR = bytes4(keccak256("fg.heavy-attack"));
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bytes4 constant BLOCK_SELECTOR = bytes4(keccak256("fg.block"));
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uint256 constant BLOCK_DECAY = 100;
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uint256 constant LIGHT_ATTACK_DECAY = 200;
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uint256 constant HEAVY_ATTACK_DECAY = 500;
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mapping(address => mapping(uint256 => TokenInfo)) state;
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constructor() {
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_registerReceivable("fg.light-attack");
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_registerReceivable("fg.heavy-attack");
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_registerReceivable("fg.block");
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}
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function register(address _contract, uint256 _tokenId) external {
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require(msg.sender == ownerOf(_contract, _tokenId), "sender not token owner");
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require(!state[_contract][_tokenId].hasRegistered, "token already registered");
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state[_contract][_tokenId] = TokenInfo(100, 100, 5, 0, 0, 0, true);
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}
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function getStats(address _contract, uint256 _tokenId) external view returns (TokenInfo){
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return state[_contract][_tokenId];
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}
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function onActionReceived(Action calldata action, uint256 _nonce)
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external
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payable
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override
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onlyReceivableAction(action, _nonce)
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{
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TokenInfo storage from = state[action.from._address][action.from._tokenId];
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require(from.healthRemaining > 0, "health 0");
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require(block.number > from.lockedUntilBlock, "token locked");
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if (action.selector == BLOCK_SELECTOR) {
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from.blockPower = from.power * 3;
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from.blockedAt = block.number;
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from.lockedUntilBlock = block.number + BLOCK_DECAY;
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return;
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}
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TokenInfo storage to = state[action.to._address][action.to._tokenId];
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require(to.healthRemaining > 0, "target health 0");
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uint256 damage;
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if (action.selector == LIGHT_ATTACK_SELECTOR ) {
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damage = from.power;
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from.lockedUntilBlock = block.number + LIGHT_ATTACK_DECAY;
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}
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if (action.selector == HEAVY_ATTACK_SELECTOR) {
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damage = from.power * 3;
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from.lockedUntilBlock = block.number + HEAVY_ATTACK_DECAY;
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}
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if(to.blockedAt + BLOCK_DECAY > block.number) {
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if(to.blockPower >= damage){
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to.blockPower -= damage;
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return;
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}
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damage -= to.blockPower;
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}
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if(to.healthRemaining > damage){
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to.healthRemaining -= damage;
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return;
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}
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// Winner gains loser's power and some health
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from.power += to.power;
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from.healthRemaining += to.power;
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from.wins++;
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to.healthRemaining = 0;
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}
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}
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contract Fighter is ERC5050, ERC721 {
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IFightGame stateContract;
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constructor(address _stateContract) {
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_registerAction("fg.light-attack");
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_registerAction("fg.heavy-attack");
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_registerSendable("fg.block");
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stateContract = IFightGame(_stateContract);
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}
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// Update NFT render / metadata based on game stats
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function tokenURICharacterEmoji(uint256 tokenId)
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public
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view
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override
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returns (string memory)
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{
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TokenInfo memory stats = stateContract.getStats(address(this), tokenId);
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if(stats.healthRemaining == 0){
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return unicode"😵";
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}
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if(stats.power > 100){
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return unicode"🦾";
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}
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if(stats.power > 50){
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return unicode"💪";
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}
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if(stats.power > 20){
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return unicode"🤩";
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}
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if(stats.power > 5){
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return unicode"😃";
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}
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return unicode"😀";
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}
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} |