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Routines |
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This incrementally wipes and displays queued game messages.
Used by the routine at main_loop.
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Proceed only if message display delay is zero.
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| message_display | 7D48 | LD A,($7D0F) | If message display delay is positive... | |
| 7D4B | AND A | |||
| 7D4C | JP Z,message_display_0 | |||
| 7D4F | DEC A | Decrement it - we'll get called again until it hits zero | ||
| 7D50 | LD ($7D0F),A | |||
| 7D53 | RET | Return | ||
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Otherwise message_display_delay reached zero.
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| message_display_0 | 7D54 | LD A,($7D10) | If message display index == message_NEXT (128) exit via (jump to) next_message | |
| 7D57 | CP $80 | |||
| 7D59 | JR Z,next_message | |||
| 7D5B | JR NC,wipe_message | Otherwise if message display index > message_NEXT exit via (jump to) wipe_message | ||
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Display a character
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| 7D5D | LD HL,($7D13) | Otherwise... point HL to the current message character | ||
| 7D60 | LD DE,$50E0 | Point DE at the message text screen address plus the display index | ||
| 7D63 | OR E | |||
| 7D64 | LD E,A | |||
| 7D65 | CALL plot_glyph | Plot the glyph | ||
| 7D68 | LD A,E | Save the incremented message display index | ||
| 7D69 | AND $1F | |||
| 7D6B | LD ($7D10),A | |||
| 7D6E | INC HL | Check for end of string ($FF) | ||
| 7D6F | LD A,(HL) | |||
| 7D70 | CP $FF | |||
| 7D72 | JP NZ,not_end_of_string | |||
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Leave the message for 31 turns, then wipe it.
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| 7D75 | LD A,$1F | Set message display delay to 31 | ||
| 7D77 | LD ($7D0F),A | |||
| 7D7A | LD A,($7D10) | Set the message_NEXT flag in the message display index | ||
| 7D7D | OR $80 | |||
| 7D7F | LD ($7D10),A | |||
| 7D82 | RET | Return | ||
| not_end_of_string | 7D83 | LD ($7D13),HL | If it wasn't the end of the string set current message character to HL | |
| 7D86 | RET | Return | ||
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