1h 39m 48s logged
devlog #3 => from simulation to flight
from this devlog, i started turning the flight simulation into something actually controllable, i added a separate input system for pitch, yaw, roll and throttle, keeping the controls independent from the aircrat physics.
its still running in the console for now, but the aircraft can finally respond to player input.
for the next devlog, i want to implement rendering and camera
3h 8m 50s logged
devlog #1 - starting GuaranaHorizon
i’ve started working on Guarana Horizon, a multiplayer flight game inspired by star fox. im making it from scratch in C, without using a game engine. right now im mainly focused on getting the aircraft physics working before moving on to graphics and gameplay.
in the beginning, the physics engine kept becoming unstable and eventually getting the values to extraordinay values out of reality but now the aircraft can now accelerate, generate lift, climb and experience drag and gravity without the simulation spitting nonsense.
now it only runs tests programs to check if the physics is alright.
next i want to add actual flight controls (WASD) and then start working on rendering (probably SDL2).
i built a lightweight chip-8 (programming language for old 8-bits microcomputers from the 1970s) emulator from scratch.
now it’s running pratically all the games i tested for it
without glitches, only “issue” to address is a light flicker but this is by design of chip8
how to test it: compile it yourself or run the pre-compiled binary on github.
2h 41m 18s logged
devlog #4 - audio engine, new ui and linux build
added sound support
fixed a bug in the draw instruction missing a “break;”
fixed a bug in math operations that bugged the collision in some games (brix and pong)
readme rewritten for better clarity
new user interface
added linux support
(sorry for bad gameplay)
5h 0m 49s logged
devlog #2 => initial cpu core
implemented the first functional version of the CPU core
currently, the core architecture is kinda of working, failing mosts tests i made (the tests could be wrong lol). even if it was working, still it is incomplete, more instruction, addressing modes, accurate flags, cycle timing, interrupts and variant-specific behavior remain to be implemented.
1h 4m 6s logged
devlog #1 - not yet working
added basic cpu intialization, memory read/write functions and hardware reset using $FFFC/$FFFD reset vector.
2h 16m 50s logged
devlog #3 - (not so) final release
added rendering with SDL in a separate window
added the remaining opcodes for running all chip8 demos/games
fixed the shortcut to exit the emulator (ESC)
2h 29m 41s logged
devlog #2 - small corrections
what changed:
separation of cpu and display responsibilities into dedicated implementation and header files (cpu.c/cpu.h and display.c/display.h).
decoding of the x and y registers (in cpu cycle) is now performed once before opcode checking, eliminating redundancy within each switch case.
removal of legacy debugging routines and standardization of video buffer handling. (basically same gif as before)
i built a lightweight chip-8 emulator from scratch.
now it’s very minimal and stripped down (not all opcodes implemented yet), but it sucessfully loads and renders the basic IBM rom
how to test it: compile it yourself (made exclusively for windows) or run the pre-compiled exe on github.
1h 36m 51s logged
devlog #1 - writing a emulator
i built this (not so) simple emulator for the CHIP-8 architecture
what’s working:
4kb ram, 16 registers (V0-VF), Index (I) & PC (0x200)
opcodes: clear (00E0), jmp (1NNN), 6XNN and 7XNN (math basically), index (ANNN) and sprites (DXYN)
rendering in ascii (thinking about changing it to sdl2)
todo:
full 35 opcode support
keypad input
(maybe) migrating to SDL2
