Thomas Harte
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0c9be2b09e
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Shunted the collisions buffer onto a separate area of the heap for the time being, as a debugging aid. Also added a few more initial values.
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2017-02-12 18:16:50 -05:00 |
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Thomas Harte
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df8a5cbe6d
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Made attempts (i) to respect the delay flag; and (ii) to account for border-region sprite clocking.
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2017-02-12 17:35:09 -05:00 |
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Thomas Harte
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9ce68c38ae
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Made an effort to implement proper pixel output for sprites.
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2017-02-12 14:01:50 -05:00 |
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Thomas Harte
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40954d6a2a
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Attempted to factor out parts I expect to reuse for missiles and the ball.
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2017-02-12 11:31:17 -05:00 |
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Thomas Harte
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ac444a3f34
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Corrected both position increments and target time calculation.
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2017-02-11 21:24:14 -05:00 |
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Thomas Harte
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b8abeced6d
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Made an attempt to introduce the proper eventful loop for player output. With debugging yet to occur.
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2017-02-11 21:01:58 -05:00 |
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Thomas Harte
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aeff59addc
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Implemented motion 'correctly', for programs written to do all work outside of the pixel area.
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2017-02-11 20:25:49 -05:00 |
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Thomas Harte
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6381e4e1b0
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All that's happened to position is that numbers have been added to it. So it can't be negative, given that it wasn't before. So a regular modulo will do.
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2017-02-11 13:34:36 -05:00 |
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Thomas Harte
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905ed1f87b
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Switched to the more natural type, which is also signed, making my logic less prone to error.
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2017-02-11 13:16:53 -05:00 |
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Thomas Harte
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8de6caf6ff
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Started trying to get into a proper structure here. Chickened out.
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2017-02-11 12:59:13 -05:00 |
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Thomas Harte
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40d3f5f7f6
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Attempted properly to respect start.
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2017-02-11 08:26:09 -05:00 |
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Thomas Harte
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64d5712d1d
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Added an incorrectly-coded version of horizontal move, at least so that I can verify that information is going into the correct slots.
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2017-02-10 07:23:43 -05:00 |
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Thomas Harte
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3b20d862f0
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Made an initial attempt to mark sprite positions. But without hmove implemented, they're all over the place.
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2017-02-09 20:53:42 -05:00 |
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Thomas Harte
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2e9ef2b0ef
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Took a shot at reinstating the horizontal blank extend flag.
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2017-02-09 18:37:19 -05:00 |
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Thomas Harte
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70745286a5
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Ensured this array is properly aligned for the uin32_t accesses I intend to make for background drawing.
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2017-02-08 20:25:23 -05:00 |
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Thomas Harte
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dcb7584060
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Added the four-cycle playfield output latency and ensured you can't get smaller-than-usual pixels by rapid register value changing.
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2017-02-08 07:30:32 -05:00 |
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Thomas Harte
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a477499724
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Got a bit more explicit with range returned by get_cycles_until_horizontal_blank and hence attempted a more thorough (/correct) version of WSYNC.
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2017-02-07 22:14:45 -05:00 |
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Thomas Harte
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944d835eea
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Switched explicitly to an accumulation model for filling the collision buffer.
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2017-02-06 21:59:28 -05:00 |
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Thomas Harte
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8f5039130c
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Changed index naming order to ensure no out-of-bounds accesses.
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2017-02-06 21:48:41 -05:00 |
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Thomas Harte
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ba165bb70a
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Made an attempt properly to populate collision registers from the collision buffer.
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2017-02-06 21:15:55 -05:00 |
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Thomas Harte
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474e2e8d2c
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Fixed once again to respect mid-line palette changes.
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2017-02-06 20:09:12 -05:00 |
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Thomas Harte
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8b8eb787df
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Fixed complete invisibility.
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2017-02-06 18:42:58 -05:00 |
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Thomas Harte
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66bcdd36f3
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Made an attempt to introduce an intermediate buffer that ends up with a bit mask of all graphical components present on it, and to use that to infer collision flags and colours, based on playfield priority and colour palette. Immediately yielding: a blank screen. Good work!
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2017-02-06 18:29:00 -05:00 |
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Thomas Harte
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6bcf95042c
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Started trying to be a bit more explicit about usage, and to divide up drawing responsibility.
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2017-02-05 17:51:56 -05:00 |
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Thomas Harte
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f2437cb257
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Added some additional documentation, started making steps towards returning sprites, fixed a counter bug that would exhibit as incorrect sync.
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2017-01-31 20:30:32 -05:00 |
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Thomas Harte
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abe04334c2
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Attempted to retain more player information, and removed the output cursor from class storage as I think it's acceptable as a temporary.
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2017-01-30 22:42:27 -05:00 |
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Thomas Harte
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8545707b54
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Reinstituted the playfield. Probably needs more buffering though. Time to look into delays.
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2017-01-30 21:38:58 -05:00 |
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Thomas Harte
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2b08758b2b
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Started capturing playfield/ball and background colours.
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2017-01-30 08:08:03 -05:00 |
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Thomas Harte
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764b528891
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Made a first attempt at switching to a model that respects blank and sync.
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2017-01-30 07:19:19 -05:00 |
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Thomas Harte
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92754ace7a
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Some mild fixes get me up to having a rolling screen of vertical lines. Which is what I was hoping for right now!
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2017-01-29 22:16:23 -05:00 |
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Thomas Harte
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d51f185dc7
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Made an attempt to reintroduce the basic horizontal loop.
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2017-01-29 15:43:57 -05:00 |
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Thomas Harte
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2390358c24
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Prevented unbounded CPU usage, albeit without yet deciding who has authority for the clock rate.
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2017-01-29 14:19:26 -05:00 |
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Thomas Harte
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2432a3b4d7
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Fixed condition — >= is smarter.
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2017-01-29 14:00:01 -05:00 |
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Thomas Harte
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9c3597c7e3
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Attempted to reintroduce enough logic to handle [most of] line timing, such that WSYNC works. Initial objective is to get back to having a working background.
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2017-01-29 13:47:36 -05:00 |
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Thomas Harte
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fba6baaa9c
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Stubbed and disabled to get back to building.
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2017-01-28 21:56:01 -05:00 |
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Thomas Harte
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a246530953
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Supposing the TIA were implemented, this is (more or less) what the Atari 2600 would now look like.
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2017-01-28 21:46:40 -05:00 |
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Thomas Harte
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0ffded72a6
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Created a placeholder class for a factored-out TIA. There's a bit more it'll need to do, like vending (or receiving) a CRT but this is the full hardware stuff, I think.
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2017-01-28 16:19:08 -05:00 |
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Thomas Harte
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6d087ca054
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Restored 2600 audio.
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2017-01-25 21:29:19 -05:00 |
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Thomas Harte
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be1cb2a551
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Fixed NTSC phase.
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2017-01-11 21:31:24 -05:00 |
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Thomas Harte
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a549fd1ecc
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Introduced the ability simply to piggy-back off the CRT's natural phase for the colour burst, thereby eliminating a couple of redundant independent attempts in the Oric and Electron.
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2016-12-10 13:42:34 -05:00 |
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Thomas Harte
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ebb62a2d78
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Switched the 2600 to postfix and non-camel-case instance variable names.
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2016-12-03 14:07:38 -05:00 |
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Thomas Harte
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b81c058c0a
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Factored out the Atari 2600's 6532 connection, as a low-hanging fruit.
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2016-12-03 13:41:55 -05:00 |
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Thomas Harte
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3361d6b93a
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Factored out the Atari 2600 speaker and adjusted it to postfix underscores.
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2016-12-03 13:39:46 -05:00 |
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Thomas Harte
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922dd6a586
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Hit up the other two kinds of audio generator.
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2016-10-07 17:10:00 -04:00 |
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Thomas Harte
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ee8510984f
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Added just enough wiring to restore the 2600 to functionality.
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2016-09-15 19:34:45 -04:00 |
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Thomas Harte
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d9016909ed
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Added some wiring for PAL/NTSC mode switching on the Vic, making an attempt to simplify the whole loop of having different clock rates.
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2016-08-14 13:33:20 -04:00 |
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Thomas Harte
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8db44eed3e
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Added a default implementation of Speaker::skip_samples.
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2016-07-04 20:48:27 -04:00 |
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Thomas Harte
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bfa237397d
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Settled on assigning to nullptr as the appropriate style for emptying shared_ptrs; fixed the Vic properly to release its output resources.
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2016-07-04 20:34:11 -04:00 |
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Thomas Harte
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88964ceac0
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Eliminated plain pointer passing for object types.
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2016-07-04 19:33:55 -04:00 |
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Thomas Harte
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0182b0483a
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Added a 'power on' flag that is set automatically at construction but can be declined. Saves all that stuff of every machine having to set and then unset the RST line, and fixes an Electron bug related to that.
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2016-06-29 19:13:24 -04:00 |
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