|
Routines |
| Prev: E741 | Up: Map | Next: E7AD |
|
Handler for the object types 64 to 67 (the four kinds of gem, see Handle_Stalactite) and 7F (an extra life, see Extra_Life_Template).
An object that is in a different room from Sabreman is removed. When Sabreman touches the object (see Check_Sabreman_Contact) it is erased and the pickup sound is played (see SoundsSword). An extra life goes on at Collect_Extra_Life. For a gem the score goes up (see AddPointsToScore) by the type divided by two, as a number of hundreds, plus 99. Sabreman turns cyan, the gem timer at Gem_Timer is set to 50 and printed, and the gem is taken out of the entry of the room in the room visit table (see Set_Up_Stalactites), so that it does not come back when the room is drawn again. Bit 0 of byte 06 of the gem is taken to show which of the two bytes of the entry it came from.
|
||||||||
| Handle_Collectable | E751 | LD A,($8F1C) | Fetch the room x of Sabreman. | |||||
| E754 | CP (IX+$02) | Jump to Handle_Collectable_Remove to remove the object if it is in a different room x. | ||||||
| E757 | JR NZ,Handle_Collectable_Remove | |||||||
| E759 | LD A,($8F1E) | Fetch the room y of Sabreman. | ||||||
| E75C | CP (IX+$04) | Jump to Handle_Collectable_Remove to remove the object if it is in a different room y. | ||||||
| E75F | JR NZ,Handle_Collectable_Remove | |||||||
| E761 | BIT 0,(IX+$0F) | Jump to Update_Object_Sprite if it has not been drawn yet. | ||||||
| E765 | JP NZ,Update_Object_Sprite | |||||||
| Handle_Collectable_Check_Contact | E768 | CALL Check_Sabreman_Contact | Check for contact with Sabreman. | |||||
| E76B | BIT 2,C | Jump to Handle_Collectable_Collect if Sabreman touches the object. | ||||||
| E76D | JR NZ,Handle_Collectable_Collect | |||||||
| E76F | CALL PrepDraw2 | Prepare the sprite of the object. | ||||||
| E772 | JP ColourEntity | Jump to ColourEntity. | ||||||
| Handle_Collectable_Collect | E775 | CALL StoreEntity | Save the state of the object. | |||||
| E778 | CALL RemoveEntity | Erase the sprite of the object. | ||||||
| E77B | CALL SoundsSword | Play the pickup sound. | ||||||
| E77E | LD A,(IX+$00) | Fetch the type of the object. | ||||||
| E781 | CP $7F | Jump to Collect_Extra_Life if the object is an extra life. | ||||||
| E783 | JR Z,Collect_Extra_Life | |||||||
| E785 | LD B,(IX+$00) | Fetch the type of the object into B. | ||||||
| E788 | SRL B | Divide it by two. | ||||||
| E78A | LD C,$00 | Clear C, so that BC holds the points for the object. | ||||||
| E78C | CALL AddPointsToScore | Add to the score. | ||||||
| E78F | LD A,$45 | Set the attribute of Sabreman to cyan (45). | ||||||
| E791 | LD ($8F1F),A | |||||||
| E794 | LD A,$50 | Set the gem timer to 50. | ||||||
| E796 | LD ($8EEE),A | |||||||
| E799 | CALL Print_Status_Panel_Gem_Timer | Print the gem timer. | ||||||
| E79C | CALL Read_Room_State | Read the entry of the room in the room visit table. HL holds the address of the first byte. | ||||||
| E79F | BIT 0,(IX+$06) | Jump to Handle_Collectable_Clear_Gem if the gem came from the first stalactite. | ||||||
| E7A3 | JR NZ,Handle_Collectable_Clear_Gem | |||||||
| E7A5 | INC HL | Move on to the second byte of the entry. | ||||||
| Handle_Collectable_Clear_Gem | E7A6 | RES 3,(HL) | Reset bit 3 of the byte, so that the stalactite has no gem in it any more. | |||||
|
This entry point is used by the routines at Collect_Extra_Life, Handle_Plain_Decoration, Handle_Coloured_Decoration and Handle_Guardian.
|
||||||||
| Handle_Collectable_Remove | E7A8 | LD (IX+$00),$00 | Remove the object. | |||||
| E7AC | RET | Return. | ||||||
| Prev: E741 | Up: Map | Next: E7AD |