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Routines |
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Handler for the object types 79 to 7E: the two pictures, the bookshelf, the hanging bowl, the bowl of flowers and the torch (see Sprite_Picture_1). They are coloured by copying the attributes from the colour data (see Colour_Data) rather than from the single attribute of the record, so that they are not drawn in one colour only. The other decorations are handled by Handle_Plain_Decoration.
A decoration is removed (see Handle_Collectable_Remove) when Sabreman is not in its room. The first time that it is handled Set_Decoration_Size gives it the size of its obstacle and it is drawn. It is then coloured every time that it is handled, by Handle_Stalactite_Colour_Copy.
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| Handle_Coloured_Decoration | EB39 | LD A,($8F1C) | Fetch the room x of Sabreman. | |||||
| EB3C | CP (IX+$02) | Jump to Handle_Collectable_Remove to remove the decoration if it is in a different room x. | ||||||
| EB3F | JP NZ,Handle_Collectable_Remove | |||||||
| EB42 | LD A,($8F1E) | Fetch the room y of Sabreman. | ||||||
| EB45 | CP (IX+$04) | Jump to Handle_Collectable_Remove to remove the decoration if it is in a different room y. | ||||||
| EB48 | JP NZ,Handle_Collectable_Remove | |||||||
| EB4B | CALL PrepDraw2 | Prepare the sprite of the decoration. | ||||||
| EB4E | BIT 0,(IX+$0F) | Jump to Handle_Coloured_Decoration_Colour if the decoration has been drawn already (bit 0 of the redraw flags is clear). | ||||||
| EB52 | JR Z,Handle_Coloured_Decoration_Colour | |||||||
| EB54 | RES 0,(IX+$0F) | Reset bit 0 of the redraw flags. | ||||||
| EB58 | CALL Set_Decoration_Size | Copy the size of the obstacle to the object record. | ||||||
| EB5B | CALL DrawEntity | Draw the decoration. | ||||||
| Handle_Coloured_Decoration_Colour | EB5E | LD A,(IX+$00) | Fetch the type of the decoration. | |||||
| EB61 | SUB $79 | Subtract 79 to make the number of the decoration. | ||||||
| EB63 | SLA A | Double it, as the pointers are two bytes long. | ||||||
| EB65 | LD E,A | Store the result in E. | ||||||
| EB66 | LD D,$00 | Clear the high byte of the offset. | ||||||
| EB68 | LD HL,$EB72 | Point HL at Decoration_Colour_Pointers. | ||||||
| EB6B | ADD HL,DE | Make HL point at the pointer for the decoration. | ||||||
| EB6C | LD E,(HL) | Fetch the low byte of the pointer. | ||||||
| EB6D | INC HL | Move on to the high byte. | ||||||
| EB6E | LD D,(HL) | Fetch the high byte, which makes DE point at the colour data. | ||||||
| EB6F | JP Handle_Stalactite_Colour_Copy | Jump to Handle_Stalactite_Colour_Copy to colour the decoration. | ||||||
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