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Routines |
| Prev: B83B | Up: Map | Next: B89C |
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This plots all vischars and items in order.
Used by the routines at setup_movable_items and main_loop.
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Start (infinite) loop
This can return a vischar OR an itemstruct, but not both.
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| plot_sprites | B866 | CALL get_next_drawable | Finds the next vischar or item to draw | |
| B869 | RET NZ | Return if nothing remains | ||
| B86A | BIT 6,A | Was an item returned? | ||
| B86C | JR NZ,plot_item | Jump to item handling if so | ||
| plot_vischar | B86E | CALL setup_vischar_plotting | Set up vischar plotting | |
| B871 | JR NZ,plot_sprites | If not visible (Z clear) ...loop | ||
| B873 | CALL render_mask_buffer | Render the mask buffer | ||
| B876 | LD A,($81BD) | Fetch the searchlight state | ||
| B879 | CP $FF | Is it searchlight_STATE_SEARCHING? ($FF) | ||
| B87B | CALL NZ,searchlight_mask_test | If not: check the mask buffer to see if the hero is hiding behind something | ||
| B87E | LD A,(IY+$1E) | How wide is the vischar? (3 => 16 wide, 4 => 24 wide) | ||
| B881 | CP $03 | 16 wide? | ||
| B883 | JR Z,plot_16_wide | Jump if so | ||
| plot_24_wide | B885 | CALL plot_masked_sprite_24px | Call the sprite plotter for 24-pixel-wide sprites | |
| B888 | JR plot_sprites | ...loop | ||
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It's odd to test for Z here since it's always set.
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| plot_16_wide | B88A | CALL Z,plot_masked_sprite_16px | Call (if Z set) the sprite plotter for 16-pixel-wide sprites | |
| B88D | JR plot_sprites | ...loop | ||
| plot_item | B88F | CALL setup_item_plotting | Set up item plotting | |
| B892 | JR NZ,plot_sprites | If not visible (Z clear) ...loop | ||
| B894 | CALL render_mask_buffer | Render the mask buffer | ||
| B897 | CALL plot_masked_sprite_16px_x_is_zero | Call the sprite plotter for 16-pixel-wide sprites | ||
| B89A | JR plot_sprites | ...loop | ||
| Prev: B83B | Up: Map | Next: B89C |