KickC c64 first steps

const word SCREEN0_ADDRESS  = $0400;
const word SPR_PNTR_ADDRESS = SCREEN0_ADDRESS + (2040 - 1024);

#include <c64.h>
#include "..\libraries\c64_joy.c"
#include "..\libraries\c64_vic.c"

byte sprite[]  = {
    0,127,0,1,255,192,3,255,224,3,231,224,
    7,217,240,7,223,240,7,217,240,3,231,224,
    3,255,224,3,255,224,2,255,160,1,127,64,
    1,62,64,0,156,128,0,156,128,0,73,0,0,73,0,
    0,62,0,0,62,0,0,62,0,0,28,0
};

__address(SPR_PNTR_ADDRESS) byte vic_spr_pntr[8];

void poke(unsigned word a,unsigned byte v) {
  // write byte v to memory address a
  unsigned char *MEMPTR;

  MEMPTR = (unsigned char *)a;

  *MEMPTR = v;
}

byte peek(unsigned word a) {
  // read byte from memory address a
  unsigned char *MEMPTR;

  MEMPTR = (unsigned char *)a;
  return (*MEMPTR);
}

const byte SPRITE           = 2;
const byte SCREEN_ORIGIN_X  = 24;
const byte SCREEN_ORIGIN_Y  = 50;
const byte SPRITE_SPEED     = 2;

void main() {
  //ENABLE SPRITE 2
  vic_spr_ena = vic_spr_ena | 4;

  //SPRITE 2 DATA FROM BLOCK 13
  vic_spr_pntr[2] = 13;

  byte i;
  for (i = 0; i < 62; i++) {
    poke(832+i,sprite[i]);
  }

  vic_spr2_x = SCREEN_ORIGIN_X + 255/2;
  vic_spr2_y = SCREEN_ORIGIN_Y + 200/2;

  vic_spr2_color = 1;

  while (true) {
    vic_waitForRaster(251);

    read_joy1();
    read_also_joy2();

    if      (input_dx > 0) {vic_spr2_x = vic_spr2_x + SPRITE_SPEED;}
    else if (input_dx < 0) {vic_spr2_x = vic_spr2_x - SPRITE_SPEED;}

    if      (input_dy > 0) {vic_spr2_y = vic_spr2_y + SPRITE_SPEED;}
    else if (input_dy < 0) {vic_spr2_y = vic_spr2_y - SPRITE_SPEED;}
  }
}