Vince Weaver
4acb1d16c8
snes: better enemy movement
2013-02-06 01:18:55 -05:00
Vince Weaver
da4593e688
snes: enemies are moving!
...
problem was I was letting cc65 place the BSS and it was sticking
it at $2000 which is reserved for PPU registers
2013-02-06 01:11:03 -05:00
Vince Weaver
58178b95cd
snes: use Y*4 in many cases instead of Y
...
this in theory trades off lots of shifting for a few increments
it does make the code a bit more confusing
2013-02-06 00:32:06 -05:00
Vince Weaver
a6a8904c1c
snes: another step closer to moving enemies
2013-02-05 23:31:53 -05:00
Vince Weaver
b99f48b7d5
snes: finish init enemies
...
in theory they are all set up now.
Next to get them moving
2013-02-05 16:48:29 -05:00
Vince Weaver
5d0d665f1f
snes: now iterate all enemies at creation
2013-02-05 16:24:10 -05:00
Vince Weaver
b61b08fa60
snes: validate all rep/sep setting register size
...
URGH I hate how they did this, and it would be nicer if it
had a better mnemonic. I guess I could redefine myself.
anyway all of them should be proper now
2013-02-05 16:07:02 -05:00
Vince Weaver
0711e7fffd
snes: work on enemies some more
...
in theory now we are selecting one of 8 types
2013-02-05 15:25:32 -05:00
Vince Weaver
ef8a171a8b
snes: actually use enemy sprites for the enemy
...
the enemy still doesn't move
2013-01-31 16:30:23 -05:00
Vince Weaver
4cf2b11b4a
snes: start of activating enemy code
...
they sort of appear in the corner, using existing sprites
2013-01-30 22:30:02 -05:00
Vince Weaver
889515f2c5
snes: missiles die when off end of screen
2013-01-30 01:29:14 -05:00
Vince Weaver
131b79cabf
snes: firing missiles sort of works
...
they wrap around top of screen so you can never fire more than 2 total.
It's a start though.
2013-01-30 01:16:17 -05:00
Vince Weaver
b35021a073
snes: more work on missile sprite movement
2013-01-29 17:05:01 -05:00
Vince Weaver
72ea76cfa9
snes: missile firing is getting there
...
at least when you press 'A' a missile appears
2013-01-26 00:25:12 -05:00
Vince Weaver
8234ea622d
snes: have traditional TB1 left/right motion working
2013-01-25 23:42:46 -05:00
Vince Weaver
4b90003796
snes: comment out most of the 6502 engine
...
will gradually add it back in
2013-01-25 23:01:31 -05:00
Vince Weaver
bd21fcabaf
snes: merge in game engine from Apple II port
...
we'll see how that goes
2013-01-25 21:53:50 -05:00
Vince Weaver
e9aa81ccda
snes: make star scrolling wrap properly
2013-01-25 17:37:24 -05:00
Vince Weaver
0ee9573daa
snes: have level_1 load the star background
2013-01-25 17:21:10 -05:00
Vince Weaver
6d9412fdae
snes: can now move ship left/right
2013-01-25 00:38:08 -05:00
Vince Weaver
4bba2a0fd5
snes: display rudimentary level 1
...
also fix some issues with opening and fading and title screen
zsnes hides a multitude of sins
2013-01-24 00:04:24 -05:00
Vince Weaver
dbaf404ec3
snes: rename tb_snes to tb1_snes
...
I kept typing it wrong anyway, and hey, git makes rename easy
2013-01-22 09:53:01 -05:00
