Changelog

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0.10:
  - made a proper level editor for the game (it's separate from the game itself)
  - the game can read level data from URL query strings (it's used by the level editor to play exported levels)

  - added 4 new player costumes by Amanojakuchou
  - player's walking speed is no longer taken into consideration while applying score reward for distance travelled
  - made changes to player character's code, mostly fixes
    - added air friction, the player decelerates slower while airborne
    - fixed a coyote timer bug that made it possible to do multiple jumps in a row
	- fixed a stupid oversight that caused bouncing off of enemies to not work if the player used something else than the UP arrow to jump
	- rewards for killing enemies are no longer hardcoded inside player character's code (each enemy has a variable for that now)
    - collision detection improvements 

  - deleted some unused graphics and unused lines of code
  - each trampoline can now have its own unique jump strength
  - crushers now collide with the "platform reverser" object and the bottom of the screen
  
  - added new terrain types
    - metal
	- pipe
	- ground alt
	- bridge

  - updated ground and wood tilesets

  - added conveyor belts
  - added water
    - player enters swim mode upon touching the water's surface and exits it upon jumping out of it
	- added water currents that move the player around underwater in one of four directions
  
  - added new enemies:
    - static heli rat
	- moving spike ball
	- fish
	- jumping fish
	- shark (sprite by Amanojakuchou)
	- robo-oswald (first "smart" enemy, chases the player and can jump over SOME pits and obstacles, big thanks to Amanojakuchou for the sprite and idea)
	- armed robo-oswald (same as robo-oswald, but instead of chasing the player all the time, he sometimes stops and shoots bullets) (sprite by Amanojakuchou)
	
  - added new prefab banks using newly added terrain types (factory, pipe, ground, bridge) [thanks to MrAdam for level ideas]
  - updated existing prefab banks
  - added alternative prefab content: one prefab can now have 2 different variations, each has 50% chance of spawning
  - updated prefab bank "ceilings": they're way more flexible now and can be used to make floors in gaps between prefabs
  - fixed prefab bank ceilings not appearing on the last middle prefab of the bank
  
  - added "heli test mode" for testing heli prefabs
  - added "water test mode" for testing underwater prefabs
  - added "prefab testing speed" for testing prefabs at different speeds
  - aforementioned test modes can be enabled with query string parameters

0.9.3:
  - fixed a bug that made it possible to gain score after player's death
  - fixed high score display not flashing when a new high score is achieved
  - made small changes to some prefabs
  - modified the unused (until now) PANEL tileset
  - added 2 prefabs with the PANEL tileset
  - debug camera speed can now be changed (camera_debug_speed variable)
  - fixed debug prefab markers not despawning after falling behind the left border of the screen  
		
0.9.2:
  - added a new player costume by Aethus
		
0.9.1:
  - changes to scoring system (thanks to NI240SX for the idea)
    - player receives score based on distance travelled instead of camera speed
  - changes to the prefab bank rotation
    - removed the beginner bank from initial rotation and added GRASS1 and WOOD1 in its place
	- other prefab banks unlock way faster and appear more often now
  - adjusted some values related to collisions with moving platforms
  - debug camera and debug teleport only work while debug mode is enabled
  - added a new hotkey for the settings menu (9)

0.9:
  - added 3 new player costumes (made by Soup)
  - reduced player's acceleration speed from 1 to 0.5
  - player can now fall up to 1 block behind the screen's left border without dying
  - repurposed the o_kot_dead object to serve as a death animation for more objects, such as vehicles (it's called o_corpse now)
  - added an additional check for enemies under the player before world collision detection to prevent the player from clipping through enemies while falling at high speeds
  - huge changes to player character's code
    - the character now supports "modes"
      - they can be used to adjust the character's properties and modify its movement options
      - they also allow to change how the character behaves at any time and how it reacts to collisions with walls and entities
    - added "external velocity": works similarly to normal velocity but is separate and not affected by friction, gravity nor speed limits
  - added a vehicle using the new "mode" mechanic
    - it's a helicopter that lets the player jump mid-air, bounces off the walls, and moves slightly faster than the player does on foot
    - player enters it by finding a special collectible, and gets rid of it by passing a "no helicopters" sign
 
  - added moving platforms
    - they're a last minute addition I came up with randomly while making prefabs and I'm honestly surprised they work. they're a bit messy right now, I'll make things cleaner in further updates because I want to release this one already
    - player has separate collision checks just for them, because the standard collision detection is hilariously unprepared for moving solids
    - player moves along with the platform they stand on thanks to the newly added "external velocity" feature (platforms are in fact the reason that feature was added)
    - player only collides with them while falling (and that means one way collisions are now supported)
	
  - fixed trampoline collisions
  - trampolines can be attached to ceilings
  - enemy rats can use trampolines
  - enemy rat received an alternative death animation for death by hazards
  
  - added new enemies and hazards:
    - helicopter rats
    - missiles
    - crushers
    - cacti
  
  - added new terrain types:
    - wood
    - tree
    - sand
    - panel (unused for now)
    - bigbrick
  
  - raised initial scrolling speed from 1.0 to 1.2
  - scrolling speedup routine has two stages now:
    - in stage one the interval between each speed up increases by 3 frames every time a speed up happens
    - in stage two the interval increases by a much higher amount of frames, so the scrolling doesn't reach full speed too quickly
  - the score reward for progressing through the level is much higher and depends on the current scrolling speed
  - added expert mode (toggle with the pause key before the game starts)
    - scrolling starts at a higher speed and speeds up 2 times faster
    - some prefabs only spawn when expert mode is enabled
 
  - huge changes to the world generator
    - shorter spawnpoint prefab
    - added prefab banks
      - instead of picking random prefabs, the world generator picks a random prefab bank from the current rotation and deploys prefabs according to its settings
      - each prefab bank has 5 lists of prefabs (optional lists will be skipped if empty):
      - start: optional, one of start prefabs will be deployed right after the bank is loaded
      - middle: the main part of the bank, the amount of middle prefabs deployed is random (minimum and maximum can be set in the bank's properties)
      - end: optional, one of end prefabs will be deployed right after the last middle prefab
      - hard: optional, same as middle but will only appear while playing on expert mode
      - rare: optional, same as middle but way less likely to appear
    - some banks get added to or removed from the rotation after a certain score is reached
    - the rotation is split into four groups: very common, common, rare, very rare. each has a different chance of being used
 
  - added new and improved old debug features
    - brought back debug camera controls with new hotkeys (Z,X,C)
    - improved the debug teleport (Left CTRL)
    - a line is drawn to show the point beyond which collisions and entities despawn
    - a marker is placed at the start of each prefab describing which part of the bank it belongs to
    - prefab testing mode: when a prefab is set to the prefab_testing variable, it will always spawn right after the starter prefab, which is shorter when prefab testing is enabled
    - prefab bank testing mode: same as prefab testing mode but for prefab banks
    - pressing 1 toggles debug mode (F11 apparently didn't work on some browsers)
    - pressing 2 toggles grid background
    - holding 3 makes the player character leave trails on the screen, useful for tracking movement and testing prefabs
    - pressing 4 toggles world collision display
    - pressing 0 restarts the game
 
  - updated the HTML
    - ~ key brings up the settings menu
    - the filter editor and the changelog can be accessed from there
    - added a new setting to the filter editor
    - added an option to change the scale of the game canvas
    - added an option to save and load settings
    - improved the filters' code (it's still bad)
    - fixed filters not working after a game restart

  - added HUGE THINGS
  - added more sound effects
  - fixed pausing (no more abrupt speedups after unpausing)
  - fixed a rare score display crash that happened when the score was above 999999999
  - deleted some unused files
  - countless changes and additions to the prefab collection

0.8.1 / 0.8.2:
  - updated the font
  - collision detection fixes 
    - vertical collision isn't checked when there's no vertical movement, same applies to horizontal collision, this seems to have fixed some clipping issues
  - other miscellaneous fixes and tweaks

0.8:
  - started to make the game look more like a finished product
    - debug display is off by default (can be brought back up with the "dbg" code or F11 key)
    - removed the title screen, the game now starts at the beginning of the level and waits for player's input to start scrolling and counting score
  - removed debug camera controls
  - player can now move with WASD and jump with spacebar
  - player can no longer kill enemies while dead
  - added a death animation for the player
  - added sound effects (can be muted with F2)
  - fixed a bug that caused scrolling speed to go above max
  - reduced max scrolling speed from 2.4 to 2.3
  - increased the main scene's width from 100000 to 500000
  - the scene should now automatically extend when the player's close to reaching its end (i have no idea if this works)
  - added 2 new prefabs
  
  

0.7:
  - brought back old code for horizontal collision detection and tweaked its values, seems to be working for now 
  - fixed the player's ability to clip through the ceiling while jumping off of a 1 block gap (yes that was possible, the fix is very ghetto right now but it works)
  - made slight adjustments to the player's collision box
  - added a new block: wooden block
  - added a new terrain type: cave
  - added some new prefabs and updated some existing ones
  - added trampolines
  - added 2 new player costumes
  - added high score display to the hud
    - it flashes when the player ties or beats the high score
  - character costumes are now stored in a dictionary-like variable
  - the character costume, last score and high score are now saved to local web storage
  - updated the title screen
    - cheat codes can now be entered there
 - current character costume is displayed 
 - added high score display
    - cleaned up some mess in world generator's code



0.6:
  - first """fully playable""" version of the game
  - made changes to player's collision detection again
    - the horizontal collision detection now uses code similar to the vertical one, until now it was much simpler, but it would bug out too often
  - adjusted the "jump brake" to give the player more control over their jumps
  - fixed player's ability to jump despite having a block directly above them
  - countless tweaks to the camera's properties
  - added a simple title screen
  - added a simple game over screen
  - spikes kill enemies now
  - enemies don't update while they're not visible on the screen
  - the prefab system has been improved from the last version
  - the level is now infinite and randomly generated
    - the world generator uses pre-made prefabs to generate the level
    - new prefab gets deployed automatically when the camera is about to reach the end of already existing ones
    - a 2 to 4 block gap is placed in between each prefab that's being deployed
    - there aren't many prefabs for now, and the world generator itself is rather simple. it's going to be upgraded in upcoming versions
  - the game gets rid of objects that fall behind the left border of the screen
  - small changes and fixes that I've already forgotten about



0.5:
  - added pause (press enter to pause and unpause)
  - improved the enemy's sprites
  - fixed the colors on the ground tileset 
  - started working on the world generator
    - the world generator is going to use prefabs to generate the level
 - the prefabs are stored as strings: 
   - "." means empty space 
   - "," means a the beginning of a new row of blocks
   - uppercase characters represent different kinds of blocks
   - lowercase characters represent interactive objects
 
 
 
0.4:
  - added coins, each coin gives 50 points
  - added a basic enemy
    - walks forward and turns around upon touching a wall
  - affected by gravity
  - can kill the player
  - can be killed by the player (by stomping)
  - player bounces off the enemy after stomping it and receives a 100 point bonus
  - if the player holds the jump button while stomping the enemy they'll bounce higher
  - after being stomped it changes its sprite and disappears after a few moment
  - added a filter editor that allows the player to change the game's colors
    - this one's probably getting removed or hidden, it heavily impacts the game's performance (especially on firefox)



0.3:
 - fixed collision detection bug that made the game freeze
 - fixed camera speedup bugs
 - fixed the player getting stuck to the right border of the screen
 - fixed the player being able to get out of bounds using the top of the screen
 - fixed the draw_sprite_text function (it was unsafe and could cause the game to crash)
 - made an icon for the game
 - made the "keyboard_string" extension and used it to implement cheat codes
 - made the "custom loading screen" extension and customised the loading screen with it
 - added alternative character outfits
 - added jump buffering and coyote timing
 - added new auto-tile ground blocks (bricks and clouds)
 - improved the debug display and added some new debug tools
 - greatly improved auto-tile blocks
   - the visible blocks are no longer objects, they're tiles now
   - invisible solid blocks that objects collide with automatically spawn in areas accessible by the player
   - tiles connect with edges of the screen now
 - shrinked the player character's collision box to be less than 16px tall (16px is the size of 1 block)
 
 
 
0.2:
 added:
  - scrolling camera
  - added sprite font support (draw_sprite_text function)
  - debug display and controls
  - score counter
  - hazards (spikes)
 - falling down, touching hazards or the left border of the screen will kill the player
 - huge collision detection improvements



0.1:
 - started making the game
 - made some basic graphics
 - added player's movement
  - the player can control their jump height by releasing the jump button before reaching maximum height (jump brake)
 - added basic collision detection
 - added auto-tile blocks
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Changelog

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