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Routines |
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Used by the routine at GameLoop.
Replace a typed phrase with the verb it stands for.
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| Parser_ResolvePhrase | 26788 | INC BC | The search stops one byte past the matching noun. | |
| 26789 | LD A,(25288) | Fetch how many nouns the game knows. | ||
| 26792 | SUB C | Select this noun's phrase and the marker that ends it. | ||
| 26793 | LD B,A | |||
| 26794 | LD E,A | |||
| 26795 | LD A,254 | |||
| 26797 | LD HL,(25298) | Fetch the noun-phrase table. | ||
| 26800 | INC B | Count the phrase terminator as one more step. | ||
| 26801 | JR Parser_ResolvePhrase_Step1 | Continue at Parser_ResolvePhrase_Step1 to walk past the phrases already considered. | ||
| Parser_ResolvePhrase_Loop1 | 26803 | INC HL | Skip a byte inside the phrase just passed. | |
| Parser_ResolvePhrase_Loop2 | 26804 | INC HL | Walk forward until the end-of-phrase marker. | |
| 26805 | CP (HL) | |||
| 26806 | JR Z,Parser_ResolvePhrase_Loop1 | |||
| Parser_ResolvePhrase_Step1 | 26808 | DJNZ Parser_ResolvePhrase_Loop2 | Repeat for each phrase before this noun. | |
| 26810 | JR Parser_ResolvePhrase_Step2 | Continue at Parser_ResolvePhrase_Step2 to read the object this phrase names. | ||
| Parser_ResolvePhrase_Loop3 | 26812 | INC HL | Step to the next byte of the phrase. | |
| Parser_ResolvePhrase_Step2 | 26813 | LD A,(HL) | Read the object this phrase refers to. | |
| 26814 | CALL IsObjectInCurrentRoom | Call IsObjectInCurrentRoom to test whether the object is here. | ||
| 26817 | RET Z | Return when that object is here or being carried. | ||
| 26818 | INC HL | Step to the next byte of the phrase. | ||
| 26819 | LD A,(HL) | Read the marker that follows the object. | ||
| 26820 | CP 254 | Jump back to Parser_ResolvePhrase_Loop3 when another object follows in the phrase (254). | ||
| 26822 | JR Z,Parser_ResolvePhrase_Loop3 | |||
| 26824 | LD HL,25464 | Print I can't see on the same line. | ||
| 26827 | CALL PrintString | |||
| 26830 | LD IX,(25300) | Fetch the noun table. | ||
| 26834 | CALL GetTableEntry | Call GetTableEntry to look up the table entry. | ||
| 26837 | CALL PrintString | Call PrintString to print the message. | ||
| 26840 | LD HL,25477 | Print here.. | ||
| 26843 | CALL PrintStringAndANewline | |||
| 26846 | SCF | Set the carry flag to reject the command. | ||
| 26847 | RET | Return. | ||
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