Thomas Harte
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79784a8e57
|
Followed tip: missiles are locked to the position after four output pixels, not four input pixels.
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2017-03-04 22:23:50 -05:00 |
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Thomas Harte
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4751615623
|
Fixed NTSC colour cycle count, and hence the 2600's reported line lengths and phase offset.
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2017-03-04 17:31:39 -05:00 |
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Thomas Harte
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d3257c345a
|
Tested against public ROMs and corrected. Also moved the deferred adjustment into a more canonical place.
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2017-03-04 17:00:28 -05:00 |
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Thomas Harte
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837cccdf83
|
Switched to deferred updates for the 6532.
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2017-03-04 14:58:28 -05:00 |
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Thomas Harte
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93d1573481
|
Added a fix for certain homebrews.
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2017-03-01 07:59:25 -05:00 |
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Thomas Harte
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893a5dd007
|
Added an artificial low pass filter, attempting to capture post-digital effects.
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2017-02-28 21:29:55 -05:00 |
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Thomas Harte
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06dd98b23c
|
Pulled the reset time for horizontal blank extend up to position 224.
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2017-02-28 20:28:54 -05:00 |
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Thomas Harte
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184c8ae707
|
Extended to emulate the CommaVid.
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2017-02-27 20:50:59 -05:00 |
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Thomas Harte
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9d7985c1e1
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Added Super Chip emulation.
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2017-02-26 17:47:29 -05:00 |
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Thomas Harte
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e6a84fd26b
|
Attempted a hardware-correct implementation of missile-to-player latching. This completes the last of the **knowing** inaccuracies. The rest are as-of-yet unwitting.
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2017-02-26 15:12:31 -05:00 |
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Thomas Harte
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440467ea3e
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Started communicating which copy is being requested.
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2017-02-26 13:39:25 -05:00 |
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Thomas Harte
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98376de9ad
|
Started returning 'no effect' for pot ports, rather than doing nothing. Still very much TODO though.
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2017-02-25 22:58:58 -05:00 |
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Thomas Harte
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e61e355251
|
Moved to the maximum possibly required queue length of 4. Though the emulated 2600 should never need more than 2 slots as per the current calling pattern, it's not a contractual guarantee.
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2017-02-25 17:25:10 -05:00 |
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Thomas Harte
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c898c8a99e
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Ensured the missiles and ball don't attempt to enqueue. Because I don't think they're supposed to.
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2017-02-25 17:13:22 -05:00 |
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Thomas Harte
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8c9062857c
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Added a single-slot queue for player objects to defer drawing, thereby deferring pixel lookup. Which I think is correct. Though more slots might be needed.
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2017-02-25 17:10:24 -05:00 |
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Thomas Harte
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77ed4ddc05
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Slightly simplified ready line release logic.
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2017-02-23 21:08:32 -05:00 |
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Thomas Harte
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82f392fada
|
This should be the other way around. I want whichever is later.
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2017-02-22 21:54:49 -05:00 |
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Thomas Harte
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8291a63d5f
|
Fixed loss of audio when switching to PAL.
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2017-02-22 21:15:37 -05:00 |
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Thomas Harte
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6120dae61a
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While I'm using the hacky approach to player/missile synchronisation, I need to seed adder.
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2017-02-22 07:39:11 -05:00 |
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Thomas Harte
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4f5f191cd6
|
Fixed: will no longer attempt to output pixels from before the pixel part of a line on which sync was disabled abruptly.
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2017-02-22 07:33:36 -05:00 |
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Thomas Harte
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21abf4e9fc
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Enshrined a terminology switch, albeit without any flow change behind it.
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2017-02-22 07:29:48 -05:00 |
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Thomas Harte
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144d6b70d9
|
Minor cleaning.
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2017-02-22 07:14:30 -05:00 |
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Thomas Harte
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b769f22ca0
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Switched back to the collision_buffer_ being part of the TIA object, added one more assert.
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2017-02-21 22:26:20 -05:00 |
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Thomas Harte
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7019d396d0
|
Threw in some asserts, discovering a bug in missile positioning.
|
2017-02-21 22:04:27 -05:00 |
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Thomas Harte
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f4447fd9cd
|
Attempted to fix failure of sprites properly to wrap when performing motion.
|
2017-02-21 21:53:09 -05:00 |
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Thomas Harte
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36396b3d62
|
Made a slightly better, albeit still inaccurate, version of missile-player lock.Enough for Combat to do reasonable things.
|
2017-02-21 20:45:20 -05:00 |
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Thomas Harte
|
d1dbf8c21f
|
Missile to player lock is supposed to be a toggle; also factored out the commonalities of missile and ball drawing.
|
2017-02-21 07:58:37 -05:00 |
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Thomas Harte
|
1bde0fed6f
|
Simplified relationship between Objects and the usage-specific components through inheritance.
|
2017-02-21 07:37:20 -05:00 |
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Thomas Harte
|
7ab2358bba
|
Made an attempt to reintroduce missiles.
|
2017-02-20 22:22:39 -05:00 |
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Thomas Harte
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99547181f1
|
Attempted to template this thing. Without yet a plan in place for pixel lookup timing.
|
2017-02-20 21:42:59 -05:00 |
|
Thomas Harte
|
2bf784535c
|
Simplified calllng.
|
2017-02-20 18:04:40 -05:00 |
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Thomas Harte
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57f434c199
|
Reorganised state, with an eye towards unifying object motion and triggers.
|
2017-02-20 17:58:28 -05:00 |
|
Thomas Harte
|
99a35266e1
|
Attempted to bring frequency-switching logic into the cross-platform realm. Which for now creates an issue with the OpenGL context.
|
2017-02-19 21:20:37 -05:00 |
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Thomas Harte
|
51bcaea60c
|
Disabled incorrect 'optimisations'.
|
2017-02-19 12:00:04 -05:00 |
|
Thomas Harte
|
e00339ef0a
|
Attempted to reintroduce the ball.
|
2017-02-19 08:02:54 -05:00 |
|
Thomas Harte
|
53cd125712
|
Added stub calls to draw the missiles and ball.
|
2017-02-19 07:28:24 -05:00 |
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Thomas Harte
|
04693b067c
|
Fixed failure of the optimised route to pump the pixel clock; removed optimisation entirely for now.
|
2017-02-18 21:36:48 -05:00 |
|
Thomas Harte
|
cd7876a746
|
Reintroduced the extra clocking delay.
|
2017-02-18 20:18:50 -05:00 |
|
Thomas Harte
|
ed5ff49ef5
|
Fixed vertical delay, retreated from my previous thought about adding the one extra cycle of sprite delay, at least temporarily.
|
2017-02-16 20:52:01 -05:00 |
|
Thomas Harte
|
8d502a0b03
|
Decided not to run before I can walk and switched to storing the motion time and next step explicitly per object.
|
2017-02-16 20:28:37 -05:00 |
|
Thomas Harte
|
5ea232310f
|
Added a check against negative runs.
|
2017-02-16 18:55:58 -05:00 |
|
Thomas Harte
|
09309aa74f
|
Attempted to prevent extraneous moves.
|
2017-02-16 18:52:39 -05:00 |
|
Thomas Harte
|
b5357860b9
|
Made an attempt to split things apart so as to be able to introduce the proper sprite latency.
|
2017-02-14 20:56:16 -05:00 |
|
Thomas Harte
|
cd90118a0f
|
Added two, extraordinarily simple tests.
|
2017-02-12 20:32:53 -05:00 |
|
Thomas Harte
|
25776de59d
|
I think unit testing this thing is the only way forwards. Started adding appropriate hooks.
|
2017-02-12 19:55:02 -05:00 |
|
Thomas Harte
|
600bdc9af7
|
In C++, I think the implicit cast to bool negates the need for any manual collapsing?
|
2017-02-12 18:18:35 -05:00 |
|
Thomas Harte
|
0c9be2b09e
|
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.
|
2017-02-12 18:16:50 -05:00 |
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Thomas Harte
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df8a5cbe6d
|
Made attempts (i) to respect the delay flag; and (ii) to account for border-region sprite clocking.
|
2017-02-12 17:35:09 -05:00 |
|
Thomas Harte
|
9ce68c38ae
|
Made an effort to implement proper pixel output for sprites.
|
2017-02-12 14:01:50 -05:00 |
|
Thomas Harte
|
40954d6a2a
|
Attempted to factor out parts I expect to reuse for missiles and the ball.
|
2017-02-12 11:31:17 -05:00 |
|
Thomas Harte
|
ac444a3f34
|
Corrected both position increments and target time calculation.
|
2017-02-11 21:24:14 -05:00 |
|
Thomas Harte
|
b8abeced6d
|
Made an attempt to introduce the proper eventful loop for player output. With debugging yet to occur.
|
2017-02-11 21:01:58 -05:00 |
|
Thomas Harte
|
aeff59addc
|
Implemented motion 'correctly', for programs written to do all work outside of the pixel area.
|
2017-02-11 20:25:49 -05:00 |
|
Thomas Harte
|
aff69dbc34
|
Resolved spurious static analyser issue; screen mode will always be 0–6 but it doesn't know that. Setting a non-zero divider doesn't feel worth worrying about for a cleaner compile.
|
2017-02-11 13:35:22 -05:00 |
|
Thomas Harte
|
6381e4e1b0
|
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.
|
2017-02-11 13:34:36 -05:00 |
|
Thomas Harte
|
905ed1f87b
|
Switched to the more natural type, which is also signed, making my logic less prone to error.
|
2017-02-11 13:16:53 -05:00 |
|
Thomas Harte
|
8de6caf6ff
|
Started trying to get into a proper structure here. Chickened out.
|
2017-02-11 12:59:13 -05:00 |
|
Thomas Harte
|
40d3f5f7f6
|
Attempted properly to respect start.
|
2017-02-11 08:26:09 -05:00 |
|
Thomas Harte
|
64d5712d1d
|
Added an incorrectly-coded version of horizontal move, at least so that I can verify that information is going into the correct slots.
|
2017-02-10 07:23:43 -05:00 |
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Thomas Harte
|
3b20d862f0
|
Made an initial attempt to mark sprite positions. But without hmove implemented, they're all over the place.
|
2017-02-09 20:53:42 -05:00 |
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Thomas Harte
|
2e9ef2b0ef
|
Took a shot at reinstating the horizontal blank extend flag.
|
2017-02-09 18:37:19 -05:00 |
|
Thomas Harte
|
70745286a5
|
Ensured this array is properly aligned for the uin32_t accesses I intend to make for background drawing.
|
2017-02-08 20:25:23 -05:00 |
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Thomas Harte
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dcb7584060
|
Added the four-cycle playfield output latency and ensured you can't get smaller-than-usual pixels by rapid register value changing.
|
2017-02-08 07:30:32 -05:00 |
|
Thomas Harte
|
a477499724
|
Got a bit more explicit with range returned by get_cycles_until_horizontal_blank and hence attempted a more thorough (/correct) version of WSYNC.
|
2017-02-07 22:14:45 -05:00 |
|
Thomas Harte
|
944d835eea
|
Switched explicitly to an accumulation model for filling the collision buffer.
|
2017-02-06 21:59:28 -05:00 |
|
Thomas Harte
|
8f5039130c
|
Changed index naming order to ensure no out-of-bounds accesses.
|
2017-02-06 21:48:41 -05:00 |
|
Thomas Harte
|
ba165bb70a
|
Made an attempt properly to populate collision registers from the collision buffer.
|
2017-02-06 21:15:55 -05:00 |
|
Thomas Harte
|
474e2e8d2c
|
Fixed once again to respect mid-line palette changes.
|
2017-02-06 20:09:12 -05:00 |
|
Thomas Harte
|
8b8eb787df
|
Fixed complete invisibility.
|
2017-02-06 18:42:58 -05:00 |
|
Thomas Harte
|
66bcdd36f3
|
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!
|
2017-02-06 18:29:00 -05:00 |
|
Thomas Harte
|
6bcf95042c
|
Started trying to be a bit more explicit about usage, and to divide up drawing responsibility.
|
2017-02-05 17:51:56 -05:00 |
|
Thomas Harte
|
f2437cb257
|
Added some additional documentation, started making steps towards returning sprites, fixed a counter bug that would exhibit as incorrect sync.
|
2017-01-31 20:30:32 -05:00 |
|
Thomas Harte
|
abe04334c2
|
Attempted to retain more player information, and removed the output cursor from class storage as I think it's acceptable as a temporary.
|
2017-01-30 22:42:27 -05:00 |
|
Thomas Harte
|
8545707b54
|
Reinstituted the playfield. Probably needs more buffering though. Time to look into delays.
|
2017-01-30 21:38:58 -05:00 |
|
Thomas Harte
|
2b08758b2b
|
Started capturing playfield/ball and background colours.
|
2017-01-30 08:08:03 -05:00 |
|
Thomas Harte
|
764b528891
|
Made a first attempt at switching to a model that respects blank and sync.
|
2017-01-30 07:19:19 -05:00 |
|
Thomas Harte
|
92754ace7a
|
Some mild fixes get me up to having a rolling screen of vertical lines. Which is what I was hoping for right now!
|
2017-01-29 22:16:23 -05:00 |
|
Thomas Harte
|
d51f185dc7
|
Made an attempt to reintroduce the basic horizontal loop.
|
2017-01-29 15:43:57 -05:00 |
|
Thomas Harte
|
2390358c24
|
Prevented unbounded CPU usage, albeit without yet deciding who has authority for the clock rate.
|
2017-01-29 14:19:26 -05:00 |
|
Thomas Harte
|
2432a3b4d7
|
Fixed condition — >= is smarter.
|
2017-01-29 14:00:01 -05:00 |
|
Thomas Harte
|
9c3597c7e3
|
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.
|
2017-01-29 13:47:36 -05:00 |
|
Thomas Harte
|
fba6baaa9c
|
Stubbed and disabled to get back to building.
|
2017-01-28 21:56:01 -05:00 |
|
Thomas Harte
|
a246530953
|
Supposing the TIA were implemented, this is (more or less) what the Atari 2600 would now look like.
|
2017-01-28 21:46:40 -05:00 |
|
Thomas Harte
|
0ffded72a6
|
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.
|
2017-01-28 16:19:08 -05:00 |
|
Thomas Harte
|
6d087ca054
|
Restored 2600 audio.
|
2017-01-25 21:29:19 -05:00 |
|
Thomas Harte
|
be1cb2a551
|
Fixed NTSC phase.
|
2017-01-11 21:31:24 -05:00 |
|
Thomas Harte
|
6153ada33b
|
Fixed Electron's support for automatically booting floppy disks.
|
2017-01-08 14:46:19 -05:00 |
|
Thomas Harte
|
8cd1575891
|
Similar fix to that over in Oric land: ensure a known, effective initial value for the Plus 3's control register.
|
2016-12-28 18:52:36 -05:00 |
|
Thomas Harte
|
90151e2094
|
Fixed to ensure a known initial control register value, which has taken effect.
|
2016-12-28 18:49:32 -05:00 |
|
Thomas Harte
|
a568172758
|
Made steps towards proper CRC generation. Am currently comparing against Oric disk images, as — amongst other things — they include precomputed CRCs.
|
2016-12-28 18:29:37 -05:00 |
|
Thomas Harte
|
4fca30b81f
|
Made the Plus 3 less chatty, documented invalidate_track.
|
2016-12-25 21:06:58 -05:00 |
|
Thomas Harte
|
3805e3d17d
|
Ensured base address is set properly at construction.
|
2016-12-22 22:46:02 -05:00 |
|
Thomas Harte
|
63107cd492
|
Tidied, very slightly.
|
2016-12-15 19:49:25 -05:00 |
|
Thomas Harte
|
a555c5762a
|
Rearranged code, hopefully into a more logical grouping.
|
2016-12-15 19:47:04 -05:00 |
|
Thomas Harte
|
4a7ddaf2e9
|
Added documentation and a quick note to self.
|
2016-12-15 19:43:04 -05:00 |
|
Thomas Harte
|
f61176cd7d
|
Reinstituted something of the don't-do-pixel-work-until-an-affecting-write-occurs optimisation.
|
2016-12-15 19:20:14 -05:00 |
|
Thomas Harte
|
c1c70a767a
|
Attempted fully to reinstate proper timing.
|
2016-12-15 18:52:16 -05:00 |
|
Thomas Harte
|
0326316bb8
|
Reinstated whole-frame counting. Thereby to reinstate proper interrupts.
|
2016-12-15 18:09:49 -05:00 |
|
Thomas Harte
|
b58b11fc93
|
Switched to a table-based dispatch of line-by-line actions, primarily to simplify.
|
2016-12-15 18:07:46 -05:00 |
|
Thomas Harte
|
fd541e1142
|
An early draft; dealing with the issue that not all cycles are necessarily consumed in a single call. Incomplete; broken. Committing for cross-machine visibility.
|
2016-12-12 08:01:10 -05:00 |
|