|
Routines |
| Prev: 46892 | Up: Map | Next: 46931 |
|
Used by the routines at Handle_Carrying_Eagle, Limit_Eagle_Sideways_Movement and Limit_Eagle_Vertical_Movement.
Chooses the point that an eagle flies towards while it carries Sabreman (see Handle_Carrying_Eagle). The x position (byte 12) is a random number from 64 to 191 from the frame counter. The y position (byte 14) is a random number from 76 to 107 from the refresh register.
|
||||||||
| Choose_Eagle_Target | 46911 | LD A,(23672) | Fetch the low byte of the frame counter. | |||||
| 46914 | AND %01111111 | Keep only the low seven bits. | ||||||
| 46916 | ADD A,64 | Add 64. | ||||||
| 46918 | LD (IX+12),A | Store the target x position. | ||||||
| 46921 | LD A,R | Fetch a random number from the refresh register. | ||||||
| 46923 | AND %00011111 | Keep only the low five bits. | ||||||
| 46925 | ADD A,76 | Add 76. | ||||||
| 46927 | LD (IX+14),A | Store the target y position. | ||||||
| 46930 | RET | Return. | ||||||
| Prev: 46892 | Up: Map | Next: 46931 |