unsatisfactoryOS/kernel.cpp at main · korrectional/unsatisfactoryOS · GitHub

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#include "utils/sysio.h"
#include "drivers/keyboard.h"
#include "drivers/vga_text_mode.h"
#include "drivers/vga_video_mode.h"
#include "utils/syscmd.h"


float time = 0.0;


char commandBuffer[VGA_WIDTH];
int commandBuffer_length = 0;

void clean_commandBuffer(){
    for(int i = 0; i < commandBuffer_length; i++){
        commandBuffer[i] = 0x0;
    }
    commandBuffer_length = 0;
}

void backspace(){
    return;
    VIDEO_ADDRESS_OFFSET-=2;
    printOver(" ", VIDEO_ADDRESS_OFFSET/2, 1);
    VIDEO_ADDRESS_OFFSET-=2;
    commandBuffer_length--;
    commandBuffer[commandBuffer_length] = 0x0;
    update_cursor();
}

unsigned int backspaceTimer = 0;
bool backspaceIceBreak = 0;
char oldKey[2] = {0x0};
extern "C" void main(){
    initKeyboard();
    //clearScreen();
    //enable_cursor(14, 15);
    //cmd_welcome();
    while(1){
        char currentKey[2] = {keyIn()};


        if(currentKey[0] == 0x1b) break; // esc key


        if(currentKey[0] == 0x0 && currentKey[0] != oldKey[0]){
            oldKey[0] = 0x0; // setting oldKey without entering the switch
        }
        if(currentKey[0] != 0x0 && currentKey[0] != oldKey[0]){
            oldKey[0] = currentKey[0];

            // special key behaviors
            switch (currentKey[0])
            {
            case 0x8:// backspace
                backspace();
                backspaceTimer = 0;
                backspaceIceBreak = 0; // check backspace loop below
                break;
            case 0x1c: // enter
                print("\n");
                findCommand(commandBuffer, commandBuffer_length);
                print("\n");
                clean_commandBuffer();

            default:
                if(currentKey[0] == 0x1c) {break;}
                commandBuffer[commandBuffer_length] = currentKey[0];
                commandBuffer_length ++;
                print(currentKey);
                break;
            }


        }
        else if(currentKey[0] == 0x8 && currentKey[0] == oldKey[0]) // backspace loop
        {
            backspaceTimer++;

            if(backspaceTimer>=500000 && backspaceIceBreak == 1){
                backspace();
                backspaceTimer=0;
            }
            else if(backspaceTimer>=3000000 && backspaceIceBreak == 0){
                backspaceIceBreak = 1;
                // after a longer delay, the ice breaks allowing for the fast backspace loop to begin
                // basically, only after user holds backspace for a while that it starts quickly deleting letters
            }
        }


    }
    return;
}


/*

    +-----------------------------+---------+
    | welcome to unsatisfactoryOS | dumbass |
    +-----------------------------+---------+

*/