| ← A8D8 | Map | A954 → |
A938: Speed the ball up as the rally continues
|
Counts a ball's bounces and raises its speed a step at each rally interval, so a long rally ends fast.
|
|||||||
|
|||||||
| ball_accelerate | A938 | INC (IY+$0A) | Bump this ball's bounce count and stash the new value. | ||||
| A93B | LD A,(IY+$0A) | ||||||
| A93E | EX AF,AF' | ||||||
| A93F | LD A,(rally_accel_interval) | The rally interval is the number of bounces between speed steps. | |||||
| A942 | LD B,A | ||||||
| A943 | EX AF,AF' | ||||||
| A944 | CP B | Counter short of the interval? Leave the speed unchanged. | |||||
| A945 | RET NZ | ||||||
| A946 | XOR A | Interval reached: restart the bounce count for the next step. | |||||
| A947 | LD (IY+$0A),A | ||||||
| A94A | LD A,(IY+$06) | Ball speed is capped; stop if it is already at the cap. | |||||
| A94D | CP $06 | ||||||
| A94F | RET Z | ||||||
| A950 | INC (IY+$06) | Raise the ball's speed by one step. | |||||
| A953 | RET | ||||||
| ← A8D8 | Map | A954 → |