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Found 11 results

  1. I have been a pixel designer for about 10 years now and will guarantee to give your 2600 game the best graphics I possibly can. Any and all graphics in game I am willing to flesh out. Any serious offers can email me at [email protected] and we can talk further in depth. Thank you.
  2. Finally managed to finish what I started many months ago Screen is hexagonal grid of characters (every second row is scrolled half a character to the right). All 128 chars are used for smoothing of edges. Each blob moves in random direction. If it touches another, it gets stuck to it and doesn't let go Question is: what now ? Any ideas how this could be improved to be more interesting or used for something completely different ? ps. Music is not playing from Atari liquid.xex.zip
  3. I'm in starting phase of making an engine/game maker for 8-bit Ataris and would like to hear your thoughts. There are couple of routes it could take and I don't won't to make something no one would use Please answer the poll if topic interests you and you think you have a game in you that's just waiting to come out. Notes: - Plan is to make PC version first (Win,Linux, Mac) and later maybe native 8-bit version if there's interest in it. You write scripts, edit sprites, tiles, map, sfx, music on PC. Press a key and emulator starts your game. - Scrolling is tougher to make so first version will be single screens. If people ask for scrolling we'll see what can be done. - Most important question for me is if there are more coders or users interested in something like this. Game makers like Shoot'm'up construction set on C64 or AGD on Spectrum have almost no scripting capabilities and are limited to a certain types of games. AGD is better as it allows more freedom but still something better for coders exists. Good example is Pico 8 "Fantasy console". It's basically a simple 128x128x16 colors graphis engine with support for sprites, sound fx, music and player input. What makes it great is scripting based on Lua language. So you can make any kind of game you can stick inside memory limitations. - Graphics engine will be simple and probably slow at first with more graphics modes, sprites and speed later. ps. Here is a good article on Pico 8: http://www.indieretronews.com/2015/10/pico-8-8-bit-fantasy-console-from.html Thanks ! Vladimir.
  4. Just a small demo to celebrate New Year! Enjoy! where_is_the_snow.xex ps. Hope it won't induce any headaches
  5. Keys are: cursor arrows - move cursor 0-9,A-F - choose color space - plot by current color R - fill screen with current color P - pick color under cursor Z - (freeZe) - draw plots Save/Load coming soon. seems there are no routines for disk operations.
  6. Mord

    Maze Realms v0.020...5!

    I was starting to procrastinate again due to the anticipated complexity of swapping out the old Action RPG object slot variables with the new more generalized object slot variables. Finally forced myself to sit down today, despite how that's been hurting my lower back mysteriously this last week, and ironed it out. Funny enough, it went by a lot faster than I had feared it would. In the system now there's only 7 active objects possible instead of the previous 8. Before I consider this version finished however, I'm going to be adding in the Inactive Object list and hopefully get it working. Objects are classified as Monsters and Items. Items left behind on a screen when the player leaves it will fall from the active objects into the inactive objects list. No AI is done for it while it is there and for most objects the longer it stays off the screen, the greater chance it will be deleted permanently. Some objects however have a degree of permanency. They won't be removed from the objects list unless you leave a realm (Regional Objects) or never at all! (Global Objects) Monsters don't fall to this inactive list. They'll remain in the active list all the time (global monster), until you leave a realm or it dies (Regional monster) or if it stays off the screen too long or too many monsters are expected to be loaded from the new room. This means you won't be 100% free from a "local monster" (Wandering Monsters really) just because you manage to flee the room. Anyway here's a rom of the new object slots in action. I've also tweaked the Heart Placing routine to try to make use of all empty object slots available to it. In this case a maximum of 6 since one of the slots will always hold the black key for now. (That'll change when the key can drop to the inactive list later!) Later I'll be converting the Heart Placer to be a sample Room AI routine which will help litter the inactive list with hearts to test those things out.
  7. To whom it may concern, a small and fast snippet useful for bullet aiming and other game mechanics. The code is fully tested and optimized, ready to be used by coders in the IntyBASIC Programming Contest 2018. PS The post is about the function ATAN2(), sine and cosine come for free. '''''''''''''''''''''''''''''''''''''''''''''''' ' ;;;;;;;; atan(2^(x/32))*128/pi ;;;;;;;; atan_tab: data $20,$20,$20,$21,$21,$22,$22,$23,$23,$23,$24,$24,$25,$25,$26,$26 data $26,$27,$27,$28,$28,$28,$29,$29,$2A,$2A,$2A,$2B,$2B,$2C,$2C,$2C data $2D,$2D,$2D,$2E,$2E,$2E,$2F,$2F,$2F,$30,$30,$30,$31,$31,$31,$31 data $32,$32,$32,$32,$33,$33,$33,$33,$34,$34,$34,$34,$35,$35,$35,$35 data $36,$36,$36,$36,$36,$37,$37,$37,$37,$37,$37,$38,$38,$38,$38,$38 data $38,$39,$39,$39,$39,$39,$39,$39,$39,$3A,$3A,$3A,$3A,$3A,$3A,$3A data $3A,$3B,$3B,$3B,$3B,$3B,$3B,$3B,$3B,$3B,$3B,$3B,$3C,$3C,$3C,$3C data $3C,$3C,$3C,$3C,$3C,$3C,$3C,$3C,$3C,$3D,$3D,$3D,$3D,$3D,$3D,$3D data $3D,$3D,$3D,$3D,$3D,$3D,$3D,$3D,$3D,$3D,$3D,$3D,$3E,$3E,$3E,$3E data $3E,$3E,$3E,$3E,$3E,$3E,$3E,$3E,$3E,$3E,$3E,$3E,$3E,$3E,$3E,$3E data $3E,$3E,$3E,$3E,$3E,$3E,$3E,$3E,$3E,$3E,$3E,$3E,$3F,$3F,$3F,$3F data $3F,$3F,$3F,$3F,$3F,$3F,$3F,$3F,$3F,$3F,$3F,$3F,$3F,$3F,$3F,$3F data $3F,$3F,$3F,$3F,$3F,$3F,$3F,$3F,$3F,$3F,$3F,$3F,$3F,$3F,$3F,$3F data $3F,$3F,$3F,$3F,$3F,$3F,$3F,$3F,$3F,$3F,$3F,$3F,$3F,$3F,$3F,$3F data $3F,$3F,$3F,$3F,$3F,$3F,$3F,$3F,$3F,$3F,$3F,$3F,$3F,$3F,$3F,$3F data $3F,$3F,$3F,$3F,$3F,$3F,$3F,$3F,$3F,$3F,$3F,$3F,$3F,$3F,$3F,$3F ' ;;;;;;;; log2(x)*32 ;;;;;;;; log2_tab: data $00,$00,$20,$32,$40,$4A,$52,$59,$60,$65,$6A,$6E,$72,$76,$79,$7D data $80,$82,$85,$87,$8A,$8C,$8E,$90,$92,$94,$96,$98,$99,$9B,$9D,$9E data $A0,$A1,$A2,$A4,$A5,$A6,$A7,$A9,$AA,$AB,$AC,$AD,$AE,$AF,$B0,$B1 data $B2,$B3,$B4,$B5,$B6,$B7,$B8,$B9,$B9,$BA,$BB,$BC,$BD,$BD,$BE,$BF data $C0,$C0,$C1,$C2,$C2,$C3,$C4,$C4,$C5,$C6,$C6,$C7,$C7,$C8,$C9,$C9 data $CA,$CA,$CB,$CC,$CC,$CD,$CD,$CE,$CE,$CF,$CF,$D0,$D0,$D1,$D1,$D2 data $D2,$D3,$D3,$D4,$D4,$D5,$D5,$D5,$D6,$D6,$D7,$D7,$D8,$D8,$D9,$D9 data $D9,$DA,$DA,$DB,$DB,$DB,$DC,$DC,$DD,$DD,$DD,$DE,$DE,$DE,$DF,$DF data $DF,$E0,$E0,$E1,$E1,$E1,$E2,$E2,$E2,$E3,$E3,$E3,$E4,$E4,$E4,$E5 data $E5,$E5,$E6,$E6,$E6,$E7,$E7,$E7,$E7,$E8,$E8,$E8,$E9,$E9,$E9,$EA data $EA,$EA,$EA,$EB,$EB,$EB,$EC,$EC,$EC,$EC,$ED,$ED,$ED,$ED,$EE,$EE data $EE,$EE,$EF,$EF,$EF,$EF,$F0,$F0,$F0,$F1,$F1,$F1,$F1,$F1,$F2,$F2 data $F2,$F2,$F3,$F3,$F3,$F3,$F4,$F4,$F4,$F4,$F5,$F5,$F5,$F5,$F5,$F6 data $F6,$F6,$F6,$F7,$F7,$F7,$F7,$F7,$F8,$F8,$F8,$F8,$F9,$F9,$F9,$F9 data $F9,$FA,$FA,$FA,$FA,$FA,$FB,$FB,$FB,$FB,$FB,$FC,$FC,$FC,$FC,$FC data $FD,$FD,$FD,$FD,$FD,$FD,$FE,$FE,$FE,$FE,$FE,$FF,$FF,$FF,$FF,$FF data $FF ' trick to cope with 256 '----------------------------------------------- ' Source: https://www.msx.org/forum/msx-talk/development/8-bit-atan2?page=0 ' 8-bit atan2 ' Calculate the angle, in a 256-degree circle. ' The trick is to use logarithms to get the y/x ratio and ' integrate the power function into the atan table. ' input ' #dx_in, #dy_in in -256,255 ' ' output ' angle in 0-255 ' ^ ' q1 | q0 '------+------> ' q3 | q2 ' | signed #dx_in signed #dy_in atan2: procedure if (#dy_in>0) then if (#dx_in>0) then gosub atan2_q0 ' q0 else #dx_in=-#dx_in ' q1 gosub atan2_q0 angle = (-angle) and $7F return end if else if (#dx_in>0) then #dy_in=-#dy_in ' q2 gosub atan2_q0 angle = -angle return else #dx_in=-#dx_in ' q3 #dy_in=-#dy_in gosub atan2_q0 angle = angle + 128 return end if end if return end atan2_q0: procedure if (#dx_in>=#dy_in) then angle = (-atan_tab(log2_tab(#dx_in)-log2_tab(#dy_in))) and $3F else angle = atan_tab(log2_tab(#dy_in)-log2_tab(#dx_in)) end if return end ';;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ' input ' angle in 0-255 ' ' output ' #dy_out = sin(angle) in -256,256 ' #dx_out = cos(angle) in -256,256 getsincos: procedure #dy_out = #sin_table(angle) #dx_out = #cos_table(angle) end #sin_table: data 0, 6, 12, 18, 25, 31, 37, 43, 49, 56, 62, 68, 74, 80, 86, 92 data 97, 103, 109, 115, 120, 126, 131, 136, 142, 147, 152, 157, 162, 167, 171, 176 data 181, 185, 189, 193, 197, 201, 205, 209, 212, 216, 219, 222, 225, 228, 231, 234 data 236, 238, 241, 243, 244, 246, 248, 249, 251, 252, 253, 254, 254, 255, 255, 255 #cos_table: data 256, 255, 255, 255, 254, 254, 253, 252, 251, 249, 248, 246, 244, 243, 241, 238 data 236, 234, 231, 228, 225, 222, 219, 216, 212, 209, 205, 201, 197, 193, 189, 185 data 181, 176, 171, 167, 162, 157, 152, 147, 142, 136, 131, 126, 120, 115, 109, 103 data 97, 92, 86, 80, 74, 68, 62, 56, 49, 43, 37, 31, 25, 18, 12, 6 data 0, -6, -12, -18, -25, -31, -37, -43, -49, -56, -62, -68, -74, -80, -86, -92 data -97, -103, -109, -115, -120, -126, -131, -136, -142, -147, -152, -157, -162, -167, -171, -176 data -181, -185, -189, -193, -197, -201, -205, -209, -212, -216, -219, -222, -225, -228, -231, -234 data -236, -238, -241, -243, -244, -246, -248, -249, -251, -252, -253, -254, -254, -255, -255, -255 data -256, -255, -255, -255, -254, -254, -253, -252, -251, -249, -248, -246, -244, -243, -241, -238 data -236, -234, -231, -228, -225, -222, -219, -216, -212, -209, -205, -201, -197, -193, -189, -185 data -181, -176, -171, -167, -162, -157, -152, -147, -142, -136, -131, -126, -120, -115, -109, -103 data -97, -92, -86, -80, -74, -68, -62, -56, -49, -43, -37, -31, -25, -18, -12, -6 data 0, 6, 12, 18, 25, 31, 37, 43, 49, 56, 62, 68, 74, 80, 86, 92 data 97, 103, 109, 115, 120, 126, 131, 136, 142, 147, 152, 157, 162, 167, 171, 176 data 181, 185, 189, 193, 197, 201, 205, 209, 212, 216, 219, 222, 225, 228, 231, 234 data 236, 238, 241, 243, 244, 246, 248, 249, 251, 252, 253, 254, 254, 255, 255, 255
  8. What do we struggle with the most when creating a new ColecoVision homebrew project? Of course, the answers depend on the person experience, the game idea, the tools and materials available, and so on. I would like this poll to show a full view of a game project from start to finish. Since a conversion doesn't worry about the game idea and most of its code and data, try to think about a ColecoVision project made from scratch and what is most troublesome in a full project. Let's exchange on this topic, give tips and tricks, perhaps find ways to reduce the bottleneck time parts. Maybe this can show where we should focus our effort on, even find or make some missing tools in our toolbox. Vote and reply why you voted that way! Let's begin our talk!
  9. So I'm tinkering with batari for the first time, and have gotten past the ENORMOUS headache of compiling issues to actually be able to make some neat little things. one of my sprites i.e. the player is even animated and looks awesome. I've got a second sprite however, that is making me go crazy. I am 100% new to coding in general, but this is something that I really want to successfully accomplish. Anyway.. the whole thing I want the main player to be able to do is chase mice and "munch" on them to earn as many points as possible before a timer runs out(I'll figure that out later) So far I've gotten my cat to be able to move everywhere flawlessly. the mouse just shows up right now and is chilling out. my question: How can I make it so that when the cat comes in contact with the mouse the player gets their points/ How can I get the mouse to "run away" from the cat and re-spawn when "eaten"? Forgive me for being a complete noob, but I'm at the point where I'm completely stuck, and google has run out of answers. The attached file is what I've come up with so far. Thanks!!!default.bas
  10. This next section is a big one. Wouldn't it be great if you could test code as you programmed it? Well that's where Code-As-You-Go comes into play. The mode can be accessed with a dedicated button on a keyboard. It's labeled "CAYG." Take a look at this: That's the code as you go screen. On the panel at the right, you can enter the data you want to test. On the upper right of the screen is the address that the code will assemble to. In this example, the written code will compile at address $001404. You could instead have it display which line of the source code the code will go in. First, give the subroutine a name. In this example, we have a routine called "TetrisLFSR." This will be a Motorola 68000 version of the NES Tetris RNG routine. The NES version of Tetris iterates its RNG (a 16-bit LFSR) in the following manner: Set the output bit to the XOR of bits 1 and 9, and right-shift that input into the RNG. We will replicate this routine as we enter the code. For this test, enter the input in d0. We need to enter a 16-bit value. Using a mouse, click on the fourth-to-last digit of the d0 register, then type "7259." The digit highlighted in green is the cursor. Note that the register values are displayed in hexadecimal. If you enter an invalid hexadecimal digit, nothing happens. When you enter the last digit, the cursor stays there. (If it were an A-register, the cursor would be red.) Now, time for the first instruction. Type "move.b", tab, then "d0,d2", and hit Enter (if you hit Space, it will tab for you). When you press Enter, the last line of code you wrote is automatically executed in the CAYG window, and its machine language code appears in the window as well. In M68K assembly, the instruction "move.b d0,d2" is represented by $1400. The screen looks like this: Note that after you typed the code line, that instruction automatically executed. The last byte of d0 is $59, so the last byte of d2 is now also $59. The next two instructions are "move.w d0,d1" and "lsr.w #8,d1". These are necessary to retrieve the upper byte of a 16-bit value in d1. After the second line was typed, d1 became $7259. After the third line, it became $0072. In the machine code box is E049, which is the code for "lsr.w #8,d1." Remember, only the compiled code for the last line you typed appears in the machine code box. Next, we want to take the XOR of bits 1 and 9 of the bytes in d1 and d2. Since 1 and 9 differ by exactly 8, no shifting of either byte is needed. Just XOR the bytes by typing "eor.b d2,d1", then pressing Enter. Register d1 is now equal to $2B, which is the XOR of $72 and $59. It is bit 1 from this value we need to extract and get into the X (extend) flag. To do this, type "lsr.b #2,d1", and press Enter. The value in d1 became $0A. But more importantly, look at the X and C flags. They lit up, so their value is 1. Any flag that is clear appears as white-on-black, while a set flag is indicated by the opposite color scheme. Since the XOR of bits 1 and 9 of our 16-bit value was 1, a 1 will be right-shifted in to get the new RNG value. Here is the last piece of the puzzle. Now that we have our output bit in X (and C), we can use a "roxr" instruction to shift it in. Type "roxr.w #1,d0", and hit Enter. And there you have it. The new RNG value is $B92C. With the ability to see the code execute as you type it, coding will become as easy as pie. You could also toggle register updating off/on, and you could also move your cursor to any line in the code, and press a certain button to step through the code and see the results. After finishing the code, press the CAYG button again. All the code you wrote in the CAYG screen will be placed at the place in the source code you were at when you went to this screen. You can then edit it, delete it, or change it as normal. All in all, the code-as-you-go feature could be a breakthrough for future assemblers. No matter whether it's 6502, M68K, Z80, or anything else, it's the next innovation in coding.
  11. Hi guys ! Anybody knows how to stop RMT music play but keep sfx playing ? I've tried stopping music, disabling irq (that calls music play), but I either get music+sfx or nothing... I would like to turn of music so it doesn't waste cpu time, but keep possibility of playing sfx when needed. Any help appreciated ! Vladimir
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