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main.c
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main.c
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#include <knightos/display.h>
#include <knightos/system.h>
#include <knightos/keys.h>
#include <corelib.h>
#include <stdint.h>
#include "defs.h"
//#include <experimental/debug.h>
#define SPRSIZE 8
bool getBit(unsigned char, unsigned char);
unsigned char getSector(SCREEN*, unsigned char, unsigned char);
bool getPixel(SCREEN*, unsigned char, unsigned char);
void init();
/* Warning! C support in KnightOS is highly experimental. Your mileage may vary. */
SCREEN *screen;
uint8_t key, posY, height, space, bit1, bit2, gen, forTime;
uint16_t i, score, bestscore=0;
unsigned char _;
void
main()
{
load_library("/lib/core");
get_lcd_lock();
get_keypad_lock();
screen = screen_allocate();
init();
while (1) {
draw_sprite_xor(screen, 88, posY, player_height, &player_sprite);
draw_rect_or(screen, 8, 96, 56, 0);
if (!forTime) {
gen = get_random() % 3;
forTime = 2 + get_random() % 3;
}
else {
forTime--;
}
switch (gen) {
case 1:
if (height > 1) {
height--;
}
break;
case 2:
if (height < 56 - space) {
height++;
}
break;
default:
break;
}
//Right Shift
for (i = 0; i < 768; i++) {
bit2 = screen[i] & 0x01;
screen[i] >>= 1;
screen[i] |= bit1 << 7;
bit1 = bit2;
}
for (i = 0; i < 56; i++) {
reset_pixel(screen, 0, i);
}
for (i = 0; i < height; i++) {
set_pixel(screen, 0, i);
}
for (i = height + space; i < 56; i++) {
set_pixel(screen, 0, i);
}
key = app_get_key(&_);
if (key == KEY_UP) {
posY--;
}
if (key == KEY_DOWN) {
posY++;
}
draw_sprite_xor(screen, 88, posY, player_height, &player_sprite);
draw_rect_and(screen, 7, 96, 57, 0);
draw_string(screen, 1, 58, "Score:");
draw_short(screen, 26, 58, score);
draw_string(screen, 55, 58, "Best:");
draw_short(screen, 76, 58, bestscore);
screen_draw(screen);
if (!getPixel(screen, 95, posY) ||
!getPixel(screen, 95, posY + 7) ||
!getPixel(screen, 92, posY + 3) ||
!getPixel(screen, 92, posY + 4) ) {
if (score > bestscore) {
bestscore = score;
}
init();
}
score++;
if (score % 1000 == 0 && space > 12) {
space--;
}
if (score == 60000) {
space = 0;
}
}
}
bool
getPixel(SCREEN* data, unsigned char x, unsigned char y)
{
return getBit(getSector(data, x / 8, y), 7 - (x % 8));
}
bool
getBit(unsigned char byte, unsigned char number)
{
return (byte >> number) & 0x01;
}
unsigned char
getSector(SCREEN* data, unsigned char x, unsigned char y)
{
return data[(y * 12) + x];
}
void
init()
{
key = NULL;
posY = 22;
height = 16;
space = 24;
forTime = 0;
score = 0;
screen_clear(screen);
draw_rect_or(screen, height, 96, 0, 0);
draw_rect_or(screen, 64 - (height + space), 96, height + space, 0);
draw_sprite_xor(screen, 88, posY, player_height, &player_sprite);
}