e213cc918b
Fix the last known bug. The "Game Over" screen is now shown when the first of the two players in a two player game runs out of lives.
2021-02-01 22:31:53 -05:00
815758f3ff
Rework the game logic to support one and two player games.
2021-01-20 00:06:32 -05:00
678a9ee104
Add code to keep track of two separate screens of mushrooms for player 1 and player 2.
2021-01-17 14:51:36 -05:00
384a9ea233
Make more globals per player and index into them with the player number at game time.
2021-01-10 23:17:05 -05:00
1cd4ccea3a
Start work on supporting two player games. When the user starts a two player game now, two scores are initialized and the number of lives of the two players are independently tracked. Also, all of the score code has been updated to increment the player one or player two score correct. Still need to implement the logic to save the game state per player and switch between the players on each death.
2021-01-06 23:27:51 -05:00
4700bd9cff
Fix a bug where the collision and collisionAddr writes went to the wrong bank, leading to memory corruption and crashes.
2021-01-06 22:21:31 -05:00
3bb4572eb8
Prompt for the initials of the player when they get a high score.
2021-01-01 23:09:46 -05:00
4c7e52af58
Scores are now added to the top ten list of high scores and saved to the settings file. There seems to be a bug with moving all of the other scores down but it is a start. The initials are hard coded to my own for now.
2020-12-31 14:04:20 -05:00
4d6f8d39f1
Change the prompt when the stereo channels are swapped so the user gets some feedback. Display the high score list. Still need to add the code to update the high score list.
2020-12-30 23:10:22 -05:00
6947d8762c
Add a way to swap left and right stereo channels and save the value in the settings.
2020-12-30 02:31:18 -05:00
aee2b26fea
Add some info about how to start a game and quit and make space for showing the high score list.
2020-12-29 14:15:25 -05:00
10a1d075fd
Add support for pausing the resuming the game. Now, any key pressed during a game pauses the game. Pressing q from the paused game will quit the game and any other key will resume the game. So, quiting with a game in progress takes two key presses. One key press to pause the game and then the user must press q or Q to actually quit.
2020-12-29 00:00:39 -05:00
d962e98368
Add the flea sound.
2020-12-22 01:00:10 -05:00
d201f80c3b
Move the sound code into a gameSound.s file. This is the first step towards going around the sound toolset for playing sounds.
2020-12-16 12:00:56 -05:00
34d16c9944
Implement the code to compare and update the high score. Add a todo for a high score list with initials. Remove the border colour performance debug.
2020-11-20 00:31:09 -05:00
fd40c12d31
Explode a bug when it crashes into the player. When the last segment collides with the player, go onto the next level.
2020-11-18 23:36:01 -05:00
520aaa5a34
Add collision detection for all of the bug types. Remove the debug code for shooting bugs. It is almost a functional game now!
2020-11-17 22:53:30 -05:00
64f96896f7
Add the ability to shoot. Detect shot collisions with mushrooms and shoot the mushrooms. Remove the ability to randomly shoot the mushrooms because that debug is no longer needed. Fix a bug where the number of infield mushrooms was not being updated for mushrooms which were shot until gone.
2020-11-16 23:48:36 -05:00
4e6bad0ae7
Start adding the code for supporting shooting.
2020-11-16 00:14:08 -05:00
2abb57b1a5
Add the code for detecting player collisions, exploding the player, decrementing the number of lives and maybe ending the game.
2020-11-11 23:51:09 -05:00
c24b8ad072
Change the spider score colour to be the same as mushroom colours so the player does not detect it as a collision. Add code to display the number of lives and add to the number of lives ever 12,000 points. This lays the groundwork for handling player death and collisions.
2020-11-09 00:12:51 -05:00
bb66ef4b03
Replace the C code which built tables at game launch time with a script which generates these tables at build time. This reduces the start time of the application and saves code space and is a necessary step before adding some new tables to handle the mouse efficiently.
2020-11-04 22:48:18 -05:00
c45c3503d6
This is the first step to getting rid of the tile.c file and replace it with generated assembly instead. And then I can add the extra data required to handle the player correctly.
2020-11-03 00:11:22 -05:00
7c0dc8ebb1
Replace the call to the Toolbox with a raw read of the mouse from ADB registers to try to minimize the cost of mouse polling in the game loop.
2020-11-01 22:50:10 -05:00
4e500c6f38
Start adding some mouse code and display a player on the bottom row of tiles only for now. No collision detection hooked up and it is terribly inefficient but it seems to work.
2020-10-28 23:46:32 -04:00
62fcc82790
Add the code to shoot mushrooms and hook up a debug routine to shoot random mushrooms.
2020-10-26 23:26:12 -04:00
0dd8222611
Add the code to handle restricting the spider to lower and lower rows as the score goes up. This is the final bit of game logic necessary for the bugs in the game I think.
2020-10-26 22:32:46 -04:00
96a6b6f51f
Implement the code to add the flea at the right time. This includes tracking the score in multiples of 20,000 and adjusting the number of mushrooms required in the infield before a flea will appear. Simplify the other score based thresholds which are based on multiples of 20,000 to use this test. Add debug which allows me to add 20,000 to the score whenever I want so I can test these thresholds more easily.
2020-10-25 23:11:11 -04:00
bb1cd9b7ba
Remove the debug code to control the scorpion speed now that the logic is implemented for that.
2020-10-23 00:25:00 -04:00
1d4f783a3e
Change the code for centipede speed to skip slow speed segments entirely once the score is more than 40000.
...
Add segments at the start of the next level in reverse order so the single head segments are added first. This ensures they do collision detection properly in the updateSegment code.
Fix a bug where a set of 16 tiles were always marked as occupied by a centipede segment because we didn't clear it properly on each updateSegment call. This fixed a problem with segments changing direction for no apparent reason.
Test for collisions on the two tiles the segment is spanning and change direction if either is occupied. This should eliminate single segments travelling on top of each other.
Add scorpions randomly during a game once we get to level 4. They are added with a 1 in 512 chance every 60 seconds so you should see a scorpion about once every 10 seconds or so.
When the score is above 20000, add scorpions at fast speed 3/4 of the time, slow speed the other 1/4 of the time. Lower scores, the scorpion is always slow.
2020-10-23 00:20:18 -04:00
9a34532d77
Implement the code to add spiders to the game. From my testing, it looks like 2 seconds after a spider leaves the game (either shot or off the screen), another one is added. Also, once the score is about 5000, the spiders added will be fast. The only spider behaviour I know of which is so far not implemented is as the player reaches higher levels, the spider constrains itself closer and closer to the bottom of the screen.
2020-10-22 00:00:16 -04:00
1f26b38784
Fix the order of colours for the different levels. Remove the debug code to add centipedes and change the colour palette. This is gone now because we now have the concept of starting a game and progressing through levels with different kinds of centipedes running at different speeds with different palette colours.
2020-10-20 23:13:46 -04:00
6c3b8398a8
Add the code to start a game and iterate through levels. We don't detect the end of a level yet though.
2020-10-19 23:34:08 -04:00
eb418fb1c4
Add the ability to shoot centipede segments.
2020-10-02 14:50:14 -04:00
1dfbe8156a
Add support for having both fast and slow centipedes in play at the same time.
2020-09-21 22:57:06 -04:00
03466f8847
Add code to allow a centipede and all its body segments to scroll in at the top of the screen at slow speed. Need to do the same for fast speed.
2020-09-13 15:18:18 -04:00
0d4677c397
More work towards the animation of centipede segments.
2020-09-08 23:54:44 -04:00
3b541f8482
Fix bug leading to crash when trying to add centipede body segments. I needed to have a nop instruction after the self-modifying long jump. I am writing 4 bytes of the address into the long jump which only uses a 3 byte address and I was corrupting the next instruction. Inserting a nop ensures no corruption happens.
2020-09-06 13:39:00 -04:00
07f8df4b4f
Draw the scorpion once we are sure the beam has past it on the screen for the previous frame. Adjust the wait for VBL look to look for less than scan line 200 rather than scan line 0. That way, we shouldn't get a frame glitch at 2.8MHz any more.
2020-09-06 01:54:47 -04:00
92c02ded0f
Simplify the handling of the dirty tiles to just store the dirty word and not keep the array of dirty tile offsets. Have the flea use game and non-game dirty tiles to fix the problem with LHS tiles being marked dirty all the time.
2020-09-04 01:55:38 -04:00
22a22d3533
Change the code to race the beam down the screen, redrawing the dirty game rows as it goes.
2020-09-04 00:17:19 -04:00
b07221c363
Change from an array of structs to a series of individual arrays for the tile information. This makes it easier to index into the arrays because the tile number * 2 is the offset, rather than tile number * 16.
2020-09-02 00:15:53 -04:00
df56cdecf1
Add the ability to display head segments of the centipede. Body segments is not working yet.
2020-08-27 23:36:16 -04:00
7d7afc908d
Use macros to reduce the copy/pasted code for marking tiles as dirty. Rough out the support for body and head segments.
2020-07-30 23:34:48 -04:00
8bcd4fccf6
Add the code to support switching between fast and slow spiders.
2020-07-27 23:30:11 -04:00
883d882d0e
Provide an API to set the default speed of a flea or a scorpion. This will allow the speed to be changed for different levels in the game. Need to add this API for spiders also.
2020-07-27 22:27:18 -04:00
36be001229
Improve the randN function. Show a different colour on the border when drawing versus updating the game state.
2020-07-27 21:47:28 -04:00
4f74d630b9
Start coding support for the spider. Also, try to show the performance of the main game loop in the border colour.
2020-07-23 23:41:12 -04:00
ada774960b
Finish up work on the scorpion, adding support for shooting the scorpion. Some more cleanup of hard coded constants, moving them to globals.
2020-07-22 23:46:04 -04:00
44cb944f22
More general cleanup and get rid of more magic numbers.
2020-07-21 22:30:05 -04:00
Jeremy Rand