dnutiu/chip8-rust
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implement input handling instructions

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This commit is contained in:
Denis-Cosmin Nutiu 2024-12-09 21:43:46 +02:00
parent 3beddd9acd
commit 0112138b78
2 changed files with 22 additions and 8 deletions
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26
src/emulator.rs
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@ -405,14 +405,28 @@ where
self.memory[memory_index] = self.registers[i as usize];
}
}
ProcessorInstruction::GetKeyBlocking(_vx) => {
//todo!("must implement")
ProcessorInstruction::GetKeyBlocking(vx) => {
if let Some(key) = self.last_key_pressed {
self.registers[vx as usize] = key;
} else {
self.program_counter -= 2;
}
}
ProcessorInstruction::SkipIfKeyIsPressed(_vx) => {
//todo!("must implement")
ProcessorInstruction::SkipIfKeyIsPressed(vx) => {
if let Some(key) = self.last_key_pressed {
if self.registers[vx as usize] == key {
self.program_counter += 2;
}
}
}
ProcessorInstruction::SkipIfKeyIsNotPressed(_vx) => {
//todo!("must implement")
ProcessorInstruction::SkipIfKeyIsNotPressed(vx) => {
if let Some(key) = self.last_key_pressed {
if self.registers[vx as usize] != key {
self.program_counter += 2;
}
} else {
self.program_counter += 2;
}
}
_ => {
warn!("Unknown instruction: {:04x}, skipping.", instruction);

4
src/input.rs
View file

@ -41,7 +41,7 @@ impl InputModule for CrossTermInput {
if !self.initialized {
panic!("CrossTermInput needs to be constructed using ::new")
}
if let Ok(true) = poll(Duration::from_millis(2)) {
if let Ok(true) = poll(Duration::from_millis(1)) {
// It's guaranteed that read() won't block if `poll` returns `Ok(true)`
let read_result = read();
@ -50,7 +50,7 @@ impl InputModule for CrossTermInput {
Event::Key(key_event) => match key_event.code {
KeyCode::Esc => {
return Some(0xFF);
},
}
KeyCode::Char(character) => {
let lowercase_character = character.to_lowercase();
for char in lowercase_character {