main.c

#include <color.h>
#include <display.h>
#include <display_syscalls.h>
#include <keyboard.hpp>
#include <keyboard_syscalls.h>
/* USEFUL ROUTINES */
#include "routines.h"


/* FUNCTIONS */
void dispCanvas(int x, int y, int width, int height, int zoom, color_t **canvas) {
    int i;
    int j;
    for (i = 0; i < width; i++) {
        for (j = 0; j < height; j++) {
            if (canvas[i][j]) {
                fillArea(i*zoom+x, j*zoom+y, zoom, zoom, canvas[i][j]);
            }
        }
    }
}

void dispCursor(int origin_x, int origin_y, int x, int y, int zoom) {
    fillArea(x*zoom+origin_x, y*zoom+origin_y, zoom, zoom, COLOR_RED);
}

/* MAIN FUNCTION */
int main() {
    /* SETUP */
    // enable fullcolor
    Bdisp_EnableColor(1);
    /* VARS */
    char buffer[10];

    int key;
    int key_dump;

    int cursor[2] = {0,0};
    int origin[2] = {1,1};

    int canvas_height = 8;
    int canvas_width = 8;
    color_t canvas[8][8];

    int zoom = 4;

    int i;
    int j;

    for (i = 0; i < canvas_height; i++) {
        for (j = 0; j < canvas_width; j++) {
            canvas[i][j] = COLOR_WHITE;
        }
    }

    /* MAIN LOOP, NEVER BREAK */
    while (1) {
        // clear screen
        Bdisp_AllClr_VRAM();

        /* GETKEY */
        if (PRGM_GetKey()==KEY_PRGM_MENU) {
            // handle menu
            GetKey(&key_dump);
        }

        // move cursor
        if ((PRGM_GetKey()==KEY_PRGM_UP) && (cursor[1]>0)) {
            cursor[1]--;
        }

        if ((PRGM_GetKey()==KEY_PRGM_DOWN) && (cursor[1]<canvas_height)) {
            cursor[1]++;
        }

        if ((PRGM_GetKey()==KEY_PRGM_LEFT) && (cursor[0]>0)) {
                cursor[0]--;
        }

        if ((PRGM_GetKey()==KEY_PRGM_RIGHT) && (cursor[0]<canvas_width)) {
                cursor[0]++;
        }

        // display the canvas
        dispCanvas(origin[0], origin[1], canvas_width, canvas_height, zoom, canvas);

        // display the cursor
        dispCursor(origin[0], origin[1], cursor[0], cursor[1], zoom);

        // debug
        strcpy(buffer, "  ");
        itoa(cursor[1], buffer+2);
        PrintXY(1, 7, buffer, TEXT_MODE_NORMAL, TEXT_COLOR_BLACK);

        // refresh screen
        Bdisp_PutDisp_DD();
    }


    return 1;
}