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Routines |
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Updates an entity of the type 11 which is made from the second kind of creature at CreatureTemplates. Field 35 is a countdown which is set from the random number when the entity is stopped.
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| UpdateBatEntity | 39962 | CALL TestEntityRemoval | Call TestEntityRemoval to test whether the entity should be removed. | |||||
| 39965 | CALL IncreaseEntityCounter | Call IncreaseEntityCounter. | ||||||
| 39968 | BIT 7,(IX+35) | Test bit 7 of field 35 of the entity. | ||||||
| 39972 | CALL NZ,ResetEntityMovement | Call ResetEntityMovement if it is set. | ||||||
| 39975 | BIT 7,(IX+30) | Jump to UpdateEntity_Move to carry on updating the entity if bit 7 of the flags is not set. | ||||||
| 39979 | JP Z,UpdateEntity_Move | |||||||
| 39982 | LD (IX+1),1 | Set the frame of the entity to 1. | ||||||
| 39986 | LD (IX+16),0 | Set the speed to 0. | ||||||
| 39990 | LD (IX+17),0 | Set the heading of the entity to 0. | ||||||
| 39994 | LD A,(IX+35) | Read field 35 of the entity. | ||||||
| 39997 | AND A | Test it. | ||||||
| 39998 | JR Z,UpdateBatEntity_Delay | Jump to UpdateBatEntity_Delay if it is zero. | ||||||
| 40000 | DEC A | Decrease the countdown by one. | ||||||
| 40001 | LD (IX+35),A | Store it in field 35 of the entity. | ||||||
| 40004 | JP NZ,UpdateEntity_Move | Jump to UpdateEntity_Move to carry on updating the entity unless it is zero. | ||||||
| 40007 | CALL FacePlayer | Call FacePlayer to choose the direction towards the player. | ||||||
| 40010 | LD A,(IX+32) | Read field 32 of the entity. | ||||||
| 40013 | OR %10000000 | Set bit 7. | ||||||
| 40015 | LD (IX+17),A | Set the heading. | ||||||
| 40018 | LD A,(24475) | Fetch the random number from 24475 and keep it in B. | ||||||
| 40021 | LD B,A | |||||||
| 40022 | AND %00010000 | Keep bit 4. | ||||||
| 40024 | ADD A,16 | Add 16. | ||||||
| 40026 | LD (IX+16),A | Set the speed. | ||||||
| 40029 | LD A,B | Fetch the random number. | ||||||
| 40030 | AND %00000011 | Use bits 0-1. | ||||||
| 40032 | ADD A,3 | Add 3. | ||||||
| 40034 | LD (IX+18),A | Store it in field 18 of the entity. | ||||||
| 40037 | LD (IX+19),0 | Set field 19 of the entity to 0. | ||||||
| 40041 | JP UpdateEntity_Move | Jump to UpdateEntity_Move to carry on updating the entity. | ||||||
| UpdateBatEntity_Delay | 40044 | LD A,(24475) | Fetch the random number from 24475. | |||||
| 40047 | AND %00011110 | Use bits 1-4. | ||||||
| 40049 | INC A | Add one. | ||||||
| 40050 | LD (IX+35),A | Store it as the countdown in field 35 of the entity. | ||||||
| 40053 | JP UpdateEntity_Move | Jump to UpdateEntity_Move to carry on updating the entity. | ||||||
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