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25 February 2014, 15:04
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#1 |
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Registered User
Join Date: Aug 2008
Location: Salisbury
Posts: 744
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Horizontal Sprite Position Confused!?
Just playing with some sprites at the moment and totally confused over the horizontal position. The HRM says the sprite can be any position on the screen horizontally, but there is only a byte value for this. How can this be if the screen is 320 pixels wide + window start position?
Am I missing something obvious here? |
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25 February 2014, 16:29
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#2 |
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move.l #$c0ff33,throat
Join Date: Dec 2005
Location: Berlin/Joymoney
Posts: 6,863
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Check bit 0 in SPRxCTL.
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25 February 2014, 16:48
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#3 |
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Registered User
Join Date: Aug 2008
Location: Salisbury
Posts: 744
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Jesus! Thats well hidden! So theres actually 9 bits for position with the LSB being set on the second word. FFS!
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25 February 2014, 17:27
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#4 |
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Registered User
Join Date: Aug 2008
Location: Salisbury
Posts: 744
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yep, that fixed it
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