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Routines |
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Handler for the object types 100 to 103 (the four kinds of gem, see Handle_Stalactite) and 127 (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 153. Sabreman turns cyan, the gem timer at Gem_Timer is set to 80 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 6 of the gem is taken to show which of the two bytes of the entry it came from.
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| Handle_Collectable | 59217 | LD A,(36636) | Fetch the room x of Sabreman. | |||||
| 59220 | CP (IX+2) | Jump to Handle_Collectable_Remove to remove the object if it is in a different room x. | ||||||
| 59223 | JR NZ,Handle_Collectable_Remove | |||||||
| 59225 | LD A,(36638) | Fetch the room y of Sabreman. | ||||||
| 59228 | CP (IX+4) | Jump to Handle_Collectable_Remove to remove the object if it is in a different room y. | ||||||
| 59231 | JR NZ,Handle_Collectable_Remove | |||||||
| 59233 | BIT 0,(IX+15) | Jump to Update_Object_Sprite if it has not been drawn yet. | ||||||
| 59237 | JP NZ,Update_Object_Sprite | |||||||
| Handle_Collectable_Check_Contact | 59240 | CALL Check_Sabreman_Contact | Check for contact with Sabreman. | |||||
| 59243 | BIT 2,C | Jump to Handle_Collectable_Collect if Sabreman touches the object. | ||||||
| 59245 | JR NZ,Handle_Collectable_Collect | |||||||
| 59247 | CALL PrepDraw2 | Prepare the sprite of the object. | ||||||
| 59250 | JP ColourEntity | Jump to ColourEntity. | ||||||
| Handle_Collectable_Collect | 59253 | CALL StoreEntity | Save the state of the object. | |||||
| 59256 | CALL RemoveEntity | Erase the sprite of the object. | ||||||
| 59259 | CALL SoundsSword | Play the pickup sound. | ||||||
| 59262 | LD A,(IX+0) | Fetch the type of the object. | ||||||
| 59265 | CP 127 | Jump to Collect_Extra_Life if the object is an extra life. | ||||||
| 59267 | JR Z,Collect_Extra_Life | |||||||
| 59269 | LD B,(IX+0) | Fetch the type of the object into B. | ||||||
| 59272 | SRL B | Divide it by two. | ||||||
| 59274 | LD C,0 | Clear C, so that BC holds the points for the object. | ||||||
| 59276 | CALL AddPointsToScore | Add to the score. | ||||||
| 59279 | LD A,69 | Set the attribute of Sabreman to cyan (69). | ||||||
| 59281 | LD (36639),A | |||||||
| 59284 | LD A,80 | Set the gem timer to 80. | ||||||
| 59286 | LD (36590),A | |||||||
| 59289 | CALL Print_Status_Panel_Gem_Timer | Print the gem timer. | ||||||
| 59292 | CALL Read_Room_State | Read the entry of the room in the room visit table. HL holds the address of the first byte. | ||||||
| 59295 | BIT 0,(IX+6) | Jump to Handle_Collectable_Clear_Gem if the gem came from the first stalactite. | ||||||
| 59299 | JR NZ,Handle_Collectable_Clear_Gem | |||||||
| 59301 | INC HL | Move on to the second byte of the entry. | ||||||
| Handle_Collectable_Clear_Gem | 59302 | RES 3,(HL) | Reset bit 3 of the byte, so that the stalactite has no gem in it any more. | |||||
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This entry point is used by the routines at Collect_Extra_Life, Handle_Plain_Decoration, Handle_Coloured_Decoration and Handle_Guardian.
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| Handle_Collectable_Remove | 59304 | LD (IX+0),0 | Remove the object. | |||||
| 59308 | RET | Return. | ||||||
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