notes:comporg:spring2025:projects:mtb1
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| Both sides previous revisionPrevious revisionNext revision | Previous revision | ||
| notes:comporg:spring2025:projects:mtb1 [2025/02/20 03:22] – [translating read joystick value into X and Y] tkastne1 | notes:comporg:spring2025:projects:mtb1 [2025/02/20 03:33] (current) – [How to check if our sprite has reached a bound] tkastne1 | ||
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| Line 101: | Line 101: | ||
| ====How to check if our sprite has reached a bound==== | ====How to check if our sprite has reached a bound==== | ||
| + | Checking the bounds of the screen can be done using greater than/less than instructions | ||
| + | Remember that instructions overwrite the register | ||
| + | < | ||
| + | mov R0, R1 | ||
| + | ilt R0, YMIN | ||
| + | jt R0, _upper_bound | ||
| + | </ | ||
| + | and | ||
| + | < | ||
| + | mov R0, R1 | ||
| + | igt R0, YMAX | ||
| + | jt R0, _lower_bound | ||
| + | </ | ||
| + | Where R1 is a the y position and YMIN/YMAX are the min and max bounds | ||
| ====How to limit our sprite from leaving the playfield==== | ====How to limit our sprite from leaving the playfield==== | ||
| ====How to cause our sprite to wrap-around on the playfield==== | ====How to cause our sprite to wrap-around on the playfield==== | ||
notes/comporg/spring2025/projects/mtb1.1740021747.txt.gz · Last modified: 2025/02/20 03:22 by tkastne1
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