Ready for a homebrew Game Gear game?

[+atari2600land]

I'm back working on this. I don't know what to make level 5 though. Does anyone have any ideas? Anyway, I have a new type of enemy. This one will fly and swoop down to you. Your goal is to jump over it as it's flying low. Can you escape...the flying head of lettuce?

 

[+atari2600land]

Level 5 partly added in. I think I may have to either change the # of levels in the game or make it 64k. I only have 26% free after this update and I haven't even put in any music for it.

Anyway, Level 5 is Awesome Avenue. Mr. Ultra is walking down Awesome Avenue. To the left is a grocery store and to the right is a fast food place called "Burger Blast", even though the letters Burger Bla are visible. (s & t are off-screen.) The lettuce sprite I designed is in there and it swoops down just like I wanted it to. The current build starts out at level 5, so the lives numbers are not visible yet.

[Jinroh]

Oh sweet! I'll have to give the newest version a try. :3 I think it's funny we're both have been making games with food based enemies.

Edited October 20, 2015 by Jinroh

[+atari2600land]

Instead of the 8 levels I wanted to do, I have to have only 6 or 7. Which is good I guess since it's hard to come up with new level themes. If I wanted more space, I'd have to rewrite the entire code, which I don't want to do. I guess I should just stick to 32k since it's my first Game Gear homebrew anyway.

[+atari2600land]

Right now level 7 (which I hope to be the seventh level) is completed. If you beat level 7 in the current build, it will go back to level 5, only the flying lettuces will not swoop down because the game's code makes it think it's level 8 and not level 5. I hope to be able to put in an ending screen once you beat the game, but I'm not so sure. I have 16% free space left. I think Saturn is a good place for Mr. Ultra to go in level 6. I'll call the level Super Saturn, and the background will be almost all black, with a few stars thrown in, something simple to not eat too much space.

[+atari2600land]

The game will have 7 levels. I am working on level 6. The layout right now of level 6 is the same as a different level but that will change. I hope to have enough space left to add an ending screen, and maybe an ending tune.

[+atari2600land]

There. It's done. I even added an ending (admittedly not a very good one, but at least there IS one.) I tested it on a real Game Gear via Everdrive and everything looks OK. Let me know your thoughts on the game. You can download it in the link in my signature.

[+atari2600land]

Mr. Ultra returns

[+atari2600land]

Changed the look of the title screen and added music.

[+atari2600land]

Made the sprites smaller. Added Mr. Ultra walking by if you press Start. That's the intro. It loops right now, but won't soon.

 

[OmegaPrime]

Are you going to add proper scrolling or is it sprites as the first game?

[+atari2600land]

It will be like the first game only Mr. Ultra will now have the ability to shoot his enemies. There will also be new places and other new stuff as well.

[OmegaPrime]

Did you want to learn how to program scrolling games?compress the data,build a buffer and scroll the columns onto the screen?

[+atari2600land]

I don't know. How difficult is it (Keeping in mind that I've been struggling to get just this part done.)?

[OmegaPrime]

^{I could write something simple with a few maps(with comments) so you can study it,I'll make sure it's a very simple platform game,and if you get lost you can ask me to explain.}

 

 

^{So here is a piece of code}

 

^{ld hl,(_Xscroll)
ld de,(_XScrollSpeed)
add hl,de
ld (_XScroll),hl
ld a,h
and %00000111
ret nz
call Do_UpdateColumnBufferPointer
ld hl,_MapxL
inc (hl)
ld a,32
sub (hl)
jr nz,++
ld (hl),a
ld hl,_MapxH
inc (hl)
ld a,(_MapLength)
sub (hl)
jr nz,+
ld hl_GameState
set 1,(hl)
ret
+:
ld hl,_UpdateBufferFlag
set 1,(hl)
ret
++:
ld hl,_UpdateBufferFlag
set 0,(hl)
ret}

^{Do_UpdateColumnBufferPointer:
ld a,(_MapxL)
add a,a
ld e,a
ld d,0
lh hl,StageDataBuffer
add hl,de
ld (_ColumnDataBufferPointer),hl
ret}

 

^{Do_UpdateScreen:
ld a,(XScroll)
out (VDPRead),a
ld a,$88
out (VDPRead),a
ld hl,_UpdateBufferFlag
bit 0,(hl)
jr z,+
res 0,(hl)
ld hl,_ColumnBufferPointer
ld de,_ScreenColumnPointer}

^{DrawScreenColumn:
ld b,22
-:
call Do_DeToVDPRead
ld a,(hl)
out (VDPWrite),a
inc hl
ld a,(hl)
out (VDPWrite),a
inc hl
push hl
ex de,hl
ld de,64
add hl,de
ex de,hl
pop hl
push bc
ld bc,64
add hl,bc
pop bc
djnz,-
+:
bit 1,(hl)
ret z
res 1,(hl)
jp Do_UpdateBuffer}

^{Do_UpdateColumnBufferPointer:
ld a,(_MapxL)
add a,a
ld e,a
ld d,0
lh hl,_StageDataBuffer
add hl,de
ld (_ColumnDataBufferPointer),hl
ret}

[OmegaPrime]

I'll write something simple and send you the source code,that way you can study at you're own pace,eventually Chris you're going to want to start programming more sophisticated games,and I'd like to see Mr.Ultra 3 with proper scolling

[+atari2600land]

I worked for 4 hours on this, everything kept going wrong. But then it finally stopped being a jerk and cooperated with me. Level 1 takes place inside a giant computer. I want to call it "Crappy Computer Country" because my new computer is a piece of crap.

[+atari2600land]

One of the enemies I wanted to add in the original Mr. Ultra game but couldn't because I didn't have a good understanding of how the color works, was a carrot. Now you can walk to the right (you can't jump or shoot yet, so nothing harms you), and once you get past the hole, you'll find the carrot. There's carrots in the computer.

 

[OmegaPrime]

Can the carrot not be colored orange?,You can take a look at the palette here.How are you handling the jump physics?

 

 

http://www.smspower.org/maxim/HowToProgram/Palette

Edited April 17, 2016 by OmegaPrime

[+atari2600land]

I thought I did color him orange. I'll take a look again. I haven't included jumping yet.

[+atari2600land]

OK, I fixed it. Turns out I was using the wrong palette.

 

[OmegaPrime]

That resembles a carrot now

Edited April 17, 2016 by OmegaPrime

[OmegaPrime]

Any update chris?

[+atari2600land]

I've been busy on other projects the past few days, so I haven't been working on it.

[+atari2600land]

Worked a little bit more on this. Added jumping and collision detection. I can't test it on real hardware because I don't know where the micro SD card adapter went. Link is in my signature.