hgrsd / nibble8 Goto Github PK

We currently decrement the sound and delay timer once every abritary n ticks. We should try to get this to align with the actual CHIP-8 implementation - a decrement rate of 60hz.

Currently, drawing the display state to an SDL2 canvas is done by iterating over each bit of the display state and drawing the bitmap bit-by-bit.

This is relatively slow, because every call to draw_point actually interacts with the framebuffer. I'd like to use a texture instead and copy it to the framebuffer in one operation.

See also discussion here: https://users.rust-lang.org/t/rust-sdl2-and-raw-textures-help/45636/27.

Sound is currently unimplemented, although we do have a sound timer that can be set and decrements with ticks.

We should use SDL2 to play a sound as long as the sound timer's value > 0.

The current means of registering keyboard input is to poll the SDL event pump for events, and registering a key if it is pressed. This also sets the "current key".

The keyboard state is cleared every n iterations.

This approach is very basic and does not lead to a very nice input experience. I'd like to have a more responsive means of registering key presses.