neotokeo2001 Posted March 29, 2004 Share Posted March 29, 2004 Here's a rough Berzerk disassembly that has the color locations indicated, as well as the robot color table, and the copyright/score digits labelled (so you can compact the data and save some memory to add in your own routines). See the Centipede thread for an example of compacting bitmap data...http://atariage.com/forums/viewtopic.php?p=567987#567987 I am still trying to figure these things out. At least a few things make sense. Quote Link to comment Share on other sites More sharing options...
Nukey Shay Posted March 29, 2004 Share Posted March 29, 2004 It's really pretty simple. The lookup table holds the low byte of the address that the 7 bytes for the score digit are grabbed from. Since those can be located anywhere (as long as you stay within page $FC), you can reorganize them to share data...like the 7 digit is almost the same as a 1. There is a seperate routine that grabs the extra men and places those on the screen...I think I've got that figured out... LDX #$0A ;2 # of chr. x 2 LDA #<DigitSpace;2 space character LF527: STA $EA,X ;4 DEX ;2 lower X to do... DEX ;2 ...the next character BPL LF527 ;2 branch up if some left LDA $81 ;3 screen finished? BPL LF543 ;2 branch if not LDX #$0A ;2 # of chr. x 2 LDY $DA ;3 load # of extra lives LF535: DEY ;2 do not display current life BMI LF540 ;2 branch if none left to display LDA #<DigitXtra;2 extra life gfx pointer STA $EA,X ;4 DEX ;2 lower X to do... DEX ;2 ...the next character BPL LF535 ;2 loop if more left to do Then when the program wants to display the characters, if just loads the bitmaps via (indirect),y to get the bitmap data from the table it made at $EA-$F5... LF196: LDY $E8 ;3 LDA ($EA),Y;5 STA GRP0 ;3 STA WSYNC ;3 LDA ($EC),Y;5 STA GRP1 ;3 LDA ($EE),Y;5 STA GRP0 ;3 LDA ($F0),Y;5 STA $E9 ;3 LDA ($F2),Y;5 TAX ;2 LDA ($F4),Y;5 Quote Link to comment Share on other sites More sharing options...
neotokeo2001 Posted March 29, 2004 Share Posted March 29, 2004 AAAHHHHHH!!!! My heads gonna explode!!!! Quote Link to comment Share on other sites More sharing options...
Nukey Shay Posted March 29, 2004 Share Posted March 29, 2004 Only by changing those # values that pertain to addresses are you able to make the program relocatable...so you can modify or add routines at will without messing up the rest of the program. Here's a couple more constants: LF543: LDA $DA ;3 BMI LF55B ;2 LDA $B8 ;3 CMP #$7F ;2 BNE LF55B ;2 ;display bonus points LDA #<Digit0 ;2 2nd char. = 0 STA $EC ;3 LDX $DB ;3 load bonus value LDA LFC0B,X ;4 fetch offset STA $EA ;3 and save as first char. JMP LF59A ;3 and ;change leading zeros to spaces LF58A: LDA $EA,X ;4 CMP #<Digit0 ;2 is it equal to zero's offset? BNE LF59A ;2 branch if not LDA #<DigitSpace;2 STA $EA,X ;4 change it to a space INX ;2 INX ;2 CPX #$0A ;2 skip the rest when... BCC LF58A ;2 ...a non-zero chr. is reached Quote Link to comment Share on other sites More sharing options...
Out_of_Gas Posted March 30, 2004 Author Share Posted March 30, 2004 Man you have done some incredible work. I say leave the stagecoach. I am partial to the "Outlaw" colors(brown ground, etc.) Just Keep on Goin' Quote Link to comment Share on other sites More sharing options...
Out_of_Gas Posted March 30, 2004 Author Share Posted March 30, 2004 The new bin, is INCREDIBLE!!!!!! Quote Link to comment Share on other sites More sharing options...
Nukey Shay Posted March 30, 2004 Share Posted March 30, 2004 You can freely move things around below address $FB00 (because the screens are set up to operate between page breaks). You can easily reclaim 7 bytes by moving the "space" character a bit higher to a spot where 7 consecutive zeros exist...like the sound data...and then move the data table used for the copyright offsets into that hole. This will allow you to change the background color to anything you want, as well as free up 7 bytes that you can use anywhere in the program area Try this one...the screen colors can be set to anything (look near label LF9B4). I dunno what the CLD instruction was at that point for (just to waste 2 cycles AFAIK), so I just eliminated it and used a free byte to change the instruction to an LDA# instruction instead. berzerk.zip Quote Link to comment Share on other sites More sharing options...
neotokeo2001 Posted March 30, 2004 Share Posted March 30, 2004 OK. I see the line you added: I like the Red STA COLUBK ;3 What is the variable that changes the color? Is it the COLUBK Or is it ;3 Sorry for the newb question, but I have done all of my hacking with Hack-o-Matic and have only glanced at a few disassemblies. Quote Link to comment Share on other sites More sharing options...
neotokeo2001 Posted March 30, 2004 Share Posted March 30, 2004 Here is the latest version: Pics Below westworld_c.zip Quote Link to comment Share on other sites More sharing options...
Nukey Shay Posted March 30, 2004 Share Posted March 30, 2004 No variables...it loads the color value directly. LDA #$30 ;2 STA COLUBK ;3 ...will set the background color to dark red (#$30) The number after the semicolon is how many cycles the instructions use. Quote Link to comment Share on other sites More sharing options...
Out_of_Gas Posted March 30, 2004 Author Share Posted March 30, 2004 This gets better and better each time!!!!!!!!!!! This ROCKS!!!!!!!!!!!!!!! Quote Link to comment Share on other sites More sharing options...
neotokeo2001 Posted March 30, 2004 Share Posted March 30, 2004 No variables...it loads the color value directly.LDA #$30 ;2 STA COLUBK ;3 ...will set the background color to dark red (#$30) The number after the semicolon is how many cycles the instructions use. Got it. Thanks... Quote Link to comment Share on other sites More sharing options...
Vic George 2K3 Posted March 30, 2004 Share Posted March 30, 2004 Showdown in 2100 AD...done better! Quote Link to comment Share on other sites More sharing options...
Cybergoth Posted March 30, 2004 Share Posted March 30, 2004 Hi there! I think a saloon or a bank might look even better than the stage coach Greetings, Manuel Quote Link to comment Share on other sites More sharing options...
Retrofan Posted March 30, 2004 Share Posted March 30, 2004 Some player sprite modifications. Like'em? Can someone help me? I need for my (adult) berzerk hack the change, that the shot comes from a deeper offset in relation of the player sprite. Is there a chance to change that without much work? Quote Link to comment Share on other sites More sharing options...
neotokeo2001 Posted March 30, 2004 Share Posted March 30, 2004 Hi there! I think a saloon or a bank might look even better than the stage coach Greetings, Manuel I'll have to try some things tonight. Quote Link to comment Share on other sites More sharing options...
neotokeo2001 Posted March 30, 2004 Share Posted March 30, 2004 Some player sprite modifications. Like'em? Can someone help me? I need for my (adult) berzerk hack the change, that the shot comes from a deeper offset in relation of the player sprite. Is there a chance to change that without much work? The only problem is that the stand still animation is also part of the walking animation. If you don't do it right it looks pretty freaky. How many pixels did you need to move the shot down?? Quote Link to comment Share on other sites More sharing options...
Brad2600 Posted March 30, 2004 Share Posted March 30, 2004 I like this game! Another great Berzerk hack! Damn. I need to use Hack O Matic again. I got lots of free time to play around with it. I was referring to Version A. However, Version C is much improved. I've never cared much for Berzerk because I liked the Vectrex version over the Atari version but these hacks make it so much more fun! Quote Link to comment Share on other sites More sharing options...
neotokeo2001 Posted March 30, 2004 Share Posted March 30, 2004 I like this game! Another great Berzerk hack! Damn. I need to use Hack O Matic again. I got lots of free time to play around with it. And lots of free time is all you need. Quote Link to comment Share on other sites More sharing options...
Retrofan Posted March 30, 2004 Share Posted March 30, 2004 I need the shot 3 pixels down. Quote Link to comment Share on other sites More sharing options...
neotokeo2001 Posted March 30, 2004 Share Posted March 30, 2004 I need the shot 3 pixels down. Send me your BIN. I might be about to get 3 pixels, 2 at least. First try at a building. Screenshot Below. Quote Link to comment Share on other sites More sharing options...
Out_of_Gas Posted March 30, 2004 Author Share Posted March 30, 2004 That looks sweet!!!!!!!!!!!!!! The building really fits the game!! Quote Link to comment Share on other sites More sharing options...
Cybergoth Posted March 30, 2004 Share Posted March 30, 2004 Hi there! The shot starting position is calculated relative to the sprite position. There exist tables with additive values for both X and Y: LFCDF: .byte $00,$02,$07,$00,$05,$05,$07,$00,$05,$05,$07 LFCEA: .byte $00,$07,$08,$00,$00,$00,$00,$00,$06,$06,$06 Read these as in: Dummy, Up, Down, Dummy, Left, Left-Up, Left-Down, Dummy, Right, Right-Up, Right-Down With some experimentation you should get it right. Greetings, Manuel Quote Link to comment Share on other sites More sharing options...
ATARI TROLL Posted March 31, 2004 Share Posted March 31, 2004 All of you guys this is turning out nice! Quote Link to comment Share on other sites More sharing options...
neotokeo2001 Posted March 31, 2004 Share Posted March 31, 2004 Hi there! The shot starting position is calculated relative to the sprite position. There exist tables with additive values for both X and Y: LFCDF: .byte $00,$02,$07,$00,$05,$05,$07,$00,$05,$05,$07 LFCEA: .byte $00,$07,$08,$00,$00,$00,$00,$00,$06,$06,$06 Read these as in: Dummy, Up, Down, Dummy, Left, Left-Up, Left-Down, Dummy, Right, Right-Up, Right-Down With some experimentation you should get it right. Greetings, Manuel Very helpful. With your info I managed to figure it out in Hack-o-Matic. Took about 5 mins. to change it. Now I can make that Tank (Combat) version of Berzerk. Looks like Berzerk will be the new Hack Workhorse replacing Space Invaders... Quote Link to comment Share on other sites More sharing options...
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