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Routines |
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Used by the routine at BF60.
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This section initializes a bunch of new game data - copying bytes/addresses into the 'current game' state.
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| BF9D | LD HL,$7172 | Reset/store the address pointer to the start level text (Gatehouse Level) | ||
| BFA0 | LD ($EB5B),HL | |||
| BFA3 | LD HL,$6C7C | Address pointer to warlock and creature stat tables | ||
| BFA6 | LD ($EBC3),HL | |||
| BFA9 | LD HL,$6CDC | Address pointer to missile data tables | ||
| BFAC | LD ($EBC1),HL | |||
| BFAF | LD HL,$6DFC | Reset/store the pointer to the start of spell list text (1st spell = MOVE) | ||
| BFB2 | LD ($EB65),HL | |||
| BFB5 | LD HL,$6FBC | Reset/store the pointer to the start of spell name texts -1 | ||
| BFB8 | LD ($EB67),HL | |||
| BFBB | LD HL,$6FBD | Reset/store the pointer to the start of spell text messages ('Project thy soul' etc) | ||
| BFBE | LD ($EB63),HL | |||
| BFC1 | LD A,$1B | 27 = total number of spells (for spell list at 6DFC) | ||
| BFC3 | LD ($EB69),A | |||
| BFC6 | LD HL,$97C3 | Reset/store the pointer to the start of an address list pointing at graphics | ||
| BFC9 | LD ($EB6A),HL | |||
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Code that was used to create the initial game menus and draw the decorative screen border gets overwritten for game data (the player doesn't return to the menu and the border doesn't get erased):
The following instructions initialize a number of address pointers to the new data sets. Each section is terminated with an end-of-data byte (255).
ROOM ITEM/OBJECT/SCENERY DATA SETS FOR THE CURRENT ROOM
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| BFCC | LD HL,($DAEE) | Address pointer to room item/object/scenery data sets at 7C00 | ||
| BFCF | LD DE,$0300 | 768 bytes reserved for this | ||
| BFD2 | ADD HL,DE | |||
| BFD3 | LD (HL),$FF | |||
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FOREGROUND SCENERY DATA SETS FOR CURRENT ROOM
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| BFD5 | INC HL | |||
| BFD6 | LD ($EB70),HL | Address pointer to foreground scenery data sets at 7F01 | ||
| BFD9 | LD DE,$0070 | 112 bytes reserved for these | ||
| BFDC | ADD HL,DE | |||
| BFDD | LD (HL),$FF | |||
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MAROC'S INVENTORY - UP TO 4 OBJECTS
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| BFDF | INC HL | |||
| BFE0 | LD ($EBBA),HL | Maroc's inventory ('pockets') - 64 bytes (4 object spaces x 16 bytes) at 7F72 | ||
| BFE3 | LD B,$04 | |||
| BFE5 | LD DE,$0010 | |||
| BFE8 | LD (HL),$00 | Reset first byte of each inventory slots (0 = nothing carried) | ||
| BFEA | ADD HL,DE | |||
| BFEB | DJNZ $BFE8 | |||
| BFED | LD (HL),$FF | |||
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COLLISION/EVENT CHECKS FOR ELEMENTS IN THE CURRENT ROOM
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| BFEF | INC HL | |||
| BFF0 | LD ($EB6C),HL | Address pointer to elements/objects/events going on in current room at 7FB3 | ||
| BFF3 | LD (HL),$FF | 255 = no more events/collisions to check | ||
| BFF5 | LD DE,$0080 | 128 bytes reserved for these | ||
| BFF8 | ADD HL,DE | |||
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UNUSED DATA AREA
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| BFF9 | LD ($EB5F),HL | Skip over 32 bytes at 8033 (this data is unused) | ||
| BFFC | LD DE,$0020 | |||
| BFFF | ADD HL,DE | |||
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FLIPPED/MIRRORED GRAPHICS
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| C000 | LD ($EB61),HL | Address pointer to flipped graphics store at 8053 | ||
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MAROC'S INVENTORY SLOTS
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| C003 | LD HL,($EBBA) | Address pointer to start of Maroc's inventory (7F72) | ||
| C006 | LD ($EBBC),HL | Copy to current inventory address pointer | ||
| C009 | LD DE,$0010 | Advance 16 bytes to start of next inventory item address pointer | ||
| C00C | ADD HL,DE | |||
| C00D | LD ($EBBE),HL | And store (32642) in current game data | ||
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Prepare graphics for Maroc's sprite
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| C010 | LD A,$01 | |||
| C012 | LD ($EB50),A | Graphics & frame offset (1 = no graphic address offset, start at frame #1) - sprite graphics pointer starts at 97C3 | ||
| C015 | CALL $E0C2 | Set up graphics | ||
| C018 | LD HL,($EB51) | Store Maroc's calculated sprite graphic address pointer | ||
| C01B | LD ($EAC2),HL | |||
| C01E | LD A,$7C | 'Dummy' graphic address (AD9C) - used where nothing needs to be drawn/printed | ||
| C020 | CALL $E0C2 | |||
| C023 | LD HL,($EB51) | Store calculated graphic address pointer | ||
| C026 | LD ($EAF3),HL | |||
| C029 | LD A,$7B | Set up graphics for Maroc's shadow (at AD88) | ||
| C02B | CALL $E0C2 | |||
| C02E | LD HL,($EB51) | Get Maroc's shadow's calculated sprite graphic address pointer | ||
| C031 | LD ($EAC4),HL | ...and copy to game data store | ||
| C034 | LD A,$69 | Set up flickering barrier graphics (A9EC) used for spells such as SHIELD, PROTECT and DEFENCE | ||
| C036 | CALL $E0C2 | |||
| C039 | LD HL,($EB51) | Get the address pointer to these graphics | ||
| C03C | LD ($EC96),HL | ...and copy to the current game data store | ||
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