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Routines |
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Used by the routines at Action_Direction and Action_LeaveIfTheWayIsOpen.
Checks the object's attributes and volume against the move volume at ActionMoveVolume and the current location at ActionLocationID before a move is allowed.
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| Action_CheckTheObjectFlags | 36485 | AND A | Jump to Action_CheckTheObjectFlags_ReadTheLocation if A is zero. | |
| 36486 | JR Z,Action_CheckTheObjectFlags_ReadTheLocation | |||
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Find the object's record.
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| 36488 | CALL LocateObject | Call LocateObject to locate object. | ||
| 36491 | LD A,(IX+7) | Read the attribute flags from the object record. | ||
| 36494 | AND 40 | Keep bits 3, 5. | ||
| 36496 | JR Z,Action_CheckTheObjectFlags_ReturnFlagValueOne | Jump to Action_CheckTheObjectFlags_ReturnFlagValueOne when the object is neither broken nor open. | ||
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Test whose turn it is.
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| 36498 | LD A,(46826) | Jump to Action_CheckTheObjectFlags_ReadTheMoveVolume if *CurrentCharacter is not zero. | ||
| 36501 | AND A | |||
| 36502 | JR NZ,Action_CheckTheObjectFlags_ReadTheMoveVolume | |||
| 36504 | BIT 7,(IX+4) | Jump to Action_CheckTheObjectFlags_ReturnFlagValueOne if bit 7 of the object's second flag is set. | ||
| 36508 | JR NZ,Action_CheckTheObjectFlags_ReturnFlagValueOne | |||
| Action_CheckTheObjectFlags_ReadTheMoveVolume | 36510 | LD A,(36252) | Read the move volume. | |
| 36513 | LD B,(IX+2) | Read the volume from the object record. | ||
| 36516 | SUB B | Jump to Action_CheckTheObjectFlags_ReturnFlagValueTwo if the move volume is not below the object's volume. | ||
| 36517 | JR NC,Action_CheckTheObjectFlags_ReturnFlagValueTwo | |||
| Action_CheckTheObjectFlags_ReadTheLocation | 36519 | LD A,(36251) | Read the current location. | |
| 36522 | LD B,A | Copy the result into B. | ||
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Find the location's record.
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| 36523 | CALL LocateLocation | Call LocateLocation to locate location. | ||
| 36526 | LD (36249),IX | Save the location record pointer at ActionLocationData, and jump to Action_CheckTheObjectFlags_ReturnZero if this location's volume byte is 255. | ||
| 36530 | LD A,255 | |||
| 36532 | CP (IX+1) | |||
| 36535 | JR Z,Action_CheckTheObjectFlags_ReturnZero | |||
| 36537 | LD A,B | Use the current location again. | ||
| 36538 | CALL TableFindAnExit | Call TableFindAnExit to find an exit. | ||
| 36541 | LD C,A | Jump to Action_CheckTheObjectFlags_ReturnFlagValueThree if the move volume is not below the current location. | ||
| 36542 | LD A,(36252) | |||
| 36545 | SUB C | |||
| 36546 | JR NC,Action_CheckTheObjectFlags_ReturnFlagValueThree | |||
| Action_CheckTheObjectFlags_ReturnZero | 36548 | XOR A | Return zero. | |
| 36549 | RET | Return. | ||
| Action_CheckTheObjectFlags_ReturnFlagValueThree | 36550 | LD A,3 | The flag value to return is 3. | |
| 36552 | AND A | Set the flags from 3. The zero flag is clear. | ||
| 36553 | RET | Return. | ||
| Action_CheckTheObjectFlags_ReturnFlagValueTwo | 36554 | LD A,2 | The flag value to return is 2. | |
| 36556 | AND A | Set the flags from 2. The zero flag is clear. | ||
| 36557 | RET | Return. | ||
| Action_CheckTheObjectFlags_ReturnFlagValueOne | 36558 | LD A,1 | The flag value to return is 1. | |
| 36560 | AND A | Set the flags from 1. The zero flag is clear. | ||
| 36561 | RET | Return. | ||
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