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Routines |
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Used by the routine at DrawStripGraphic.
Skips the rows of an image that are below PlayfieldBuffer. A is the number of those rows, negated. It starts drawing at 72 and jumps to DrawStripGraphic_Draw.
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Skip the rows that are below the buffer.
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| ClipEdgeStripTop | 50327 | NEG | Make the number of rows positive and keep it in C. | |||||||
| 50329 | LD C,A | |||||||||
| 50330 | LD A,(HL) | Fetch the height of the image. | ||||||||
| 50331 | INC HL | |||||||||
| 50332 | SUB C | Subtract the rows that are below. | ||||||||
| 50333 | RET M | Return if there are none left. | ||||||||
| 50334 | RET Z | |||||||||
| 50335 | LD B,0 | Skip the image data for those rows. | ||||||||
| 50337 | ADD HL,BC | |||||||||
| 50338 | ADD HL,BC | |||||||||
| 50339 | LD D,72 | Set the vertical position to 72. | ||||||||
| 50341 | JR DrawStripGraphic_Draw | Jump to DrawStripGraphic_Draw. | ||||||||
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View the equivalent code in;
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