File: src/managers/LandManager.sol

131:     function stakeMunchable(
132:         address landlord,
133:         uint256 tokenId,
134:         uint256 plotId
135:     ) external override forceFarmPlots(msg.sender) notPaused {
136:         (address mainAccount, ) = _getMainAccountRequireRegistered(msg.sender);
137:         if (landlord == mainAccount) revert CantStakeToSelfError();
138:         if (plotOccupied[landlord][plotId].occupied)
139:             revert OccupiedPlotError(landlord, plotId);
140:         if (munchablesStaked[mainAccount].length > 10)
141:             revert TooManyStakedMunchiesError();
142:         if (munchNFT.ownerOf(tokenId) != mainAccount)
143:             revert InvalidOwnerError();
144: 
145:         uint256 totalPlotsAvail = _getNumPlots(landlord);
146:         if (plotId >= totalPlotsAvail) revert PlotTooHighError();
147: 
148:         if (
149:             !munchNFT.isApprovedForAll(mainAccount, address(this)) &&
150:             munchNFT.getApproved(tokenId) != address(this)
151:         ) revert NotApprovedError();
152:         munchNFT.transferFrom(mainAccount, address(this), tokenId);
153: 
154:         plotOccupied[landlord][plotId] = Plot({
155:             occupied: true,
156:             tokenId: tokenId
157:         });
158: 
159:         munchablesStaked[mainAccount].push(tokenId);
160:         munchableOwner[tokenId] = mainAccount;
161: 
162:         toilerState[tokenId] = ToilerState({
163:             lastToilDate: block.timestamp,
164:             plotId: plotId,
165:             landlord: landlord,
166:@>           latestTaxRate: plotMetadata[landlord].currentTaxRate,
167:             dirty: false
168:         });
169: 
170:         emit FarmPlotTaken(toilerState[tokenId], tokenId);
171:     }
File: src/managers/LandManager.sol

232:     function _farmPlots(address _sender) internal {
233:         (
234:             address mainAccount,
235:             MunchablesCommonLib.Player memory renterMetadata
236:         ) = _getMainAccountRequireRegistered(_sender);
237: 
                --- SNIPPED ---

247:         for (uint8 i = 0; i < staked.length; i++) {
                --- SNIPPED ---

280:             schnibblesTotal =
281:                 (timestamp - _toiler.lastToilDate) *
282:                 BASE_SCHNIBBLE_RATE;
283:             schnibblesTotal = uint256(
284:                 (int256(schnibblesTotal) +
285:                     (int256(schnibblesTotal) * finalBonus)) / 100
286:             );
287:             schnibblesLandlord =
288:@>           (schnibblesTotal * _toiler.latestTaxRate) / //@audit _toiler.latestTaxRate will be 0
289:                 1e18;
290: 
291:             toilerState[tokenId].lastToilDate = timestamp;
292:@>           toilerState[tokenId].latestTaxRate = plotMetadata[_toiler.landlord]    //@audit update toilerState's latestTaxRate
293:                 .currentTaxRate;
294: 
295:@>          renterMetadata.unfedSchnibbles += (schnibblesTotal -
296:                 schnibblesLandlord);
297: 
298:             landlordMetadata.unfedSchnibbles += schnibblesLandlord;
299:             landlordMetadata.lastPetMunchable = uint32(timestamp);
300:             accountManager.updatePlayer(landlord, landlordMetadata);
301:             emit FarmedSchnibbles(
302:                 _toiler.landlord,
303:                 tokenId,
304:                 _toiler.plotId,
305:                 schnibblesTotal - schnibblesLandlord,
306:                 schnibblesLandlord
307:             );
308:         }
309:@>       accountManager.updatePlayer(mainAccount, renterMetadata);
310:     }
    toilerState[Alice's tokenId: 10] = ToilerState({
            lastToilDate: `block-11`,
            plotId: 0,
            landlord: Bob Account,
            latestTaxRate: plotMetadata[landlord].currentTaxRate => 0,
            dirty: false
        });
    plotMetadata[Bob Account] = PlotMetadata({
            lastUpdated: block-12,
            currentTaxRate: DEFAULT_TAX_RATE
        });
File: src/managers/LandManager.sol

232:     function _farmPlots(address _sender) internal {
233:         (
234:             address mainAccount,
235:             MunchablesCommonLib.Player memory renterMetadata
236:         ) = _getMainAccountRequireRegistered(_sender);
237: 
                --- SNIPPED ---

247:         for (uint8 i = 0; i < staked.length; i++) {
                --- SNIPPED ---

280:@>           schnibblesTotal =
281:               (timestamp - _toiler.lastToilDate) *   //@audit `block-31` - `block-11`
282:                 BASE_SCHNIBBLE_RATE;
283:             schnibblesTotal = uint256(
284:                 (int256(schnibblesTotal) +
285:                     (int256(schnibblesTotal) * finalBonus)) / 100
286:             );
287:             schnibblesLandlord =
288:@>           (schnibblesTotal * _toiler.latestTaxRate) / //@audit _toiler.latestTaxRate will be 0
289:                 1e18;
290: 
291:             toilerState[tokenId].lastToilDate = timestamp;
292:@>           toilerState[tokenId].latestTaxRate = plotMetadata[_toiler.landlord]    //@audit update toilerState's latestTaxRate
293:                 .currentTaxRate;
294: 
295:@>          renterMetadata.unfedSchnibbles += (schnibblesTotal -
296:                 schnibblesLandlord);
297: 
298:             landlordMetadata.unfedSchnibbles += schnibblesLandlord;
299:             landlordMetadata.lastPetMunchable = uint32(timestamp);
300:             accountManager.updatePlayer(landlord, landlordMetadata);
301:             emit FarmedSchnibbles(
302:                 _toiler.landlord,
303:                 tokenId,
304:                 _toiler.plotId,
305:                 schnibblesTotal - schnibblesLandlord,
306:                 schnibblesLandlord
307:             );
308:         }
309:@>       accountManager.updatePlayer(mainAccount, renterMetadata);
310:     }
File: src/managers/LandManager.sol

131:     function stakeMunchable(
132:         address landlord,
133:         uint256 tokenId,
134:         uint256 plotId
135:     ) external override forceFarmPlots(msg.sender) notPaused {
136:         (address mainAccount, ) = _getMainAccountRequireRegistered(msg.sender);
137:         if (landlord == mainAccount) revert CantStakeToSelfError();
+138:        if (plotMetadata[landlord].lastUpdated == 0)
+139              revert PlotMetadataNotUpdatedError();
            --- SNIPPED ---
171:     }
