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#include "buttons.h"
#include "dogs.h"
#include "hal.h"
#include <stdint.h>
static const unsigned char bird[] = {
8, 8,
0b00111100,
0b01100110,
0b01000010,
0b01111110,
0b01100110,
0b01000010,
0b11000000,
0b11000000,
};
static int score;
static int t1x, t1o;
static int t2x, t2o;
static int py;
static int vy;
static int counter;
static uint32_t next = 31415926;
int rand()
{
uint32_t tr = RTC->TR;
uint32_t dr = RTC->DR;
next = next * (0x197244 + dr) + tr;
return (unsigned int)(next / 65536) % 32768;
}
#define NEW_BAR() (rand() % 50 + 5)
void flapbird_init()
{
score = 0;
t1x = DISP_WIDTH / 2, t1o = NEW_BAR();
t2x = DISP_WIDTH, t2o = NEW_BAR();
py = DISP_HEIGHT / 2 - 4;
vy = 0;
counter = 0;
}
int flapbird_loop()
{
// Player logic
if (py > 0) {
py += vy;
if (vy > -3)
vy--;
} else {
if (py < 0)
py = 0;
if (score > 0)
score = 0;
}
if (button_state & BUTTON_2) {
vy = 5;
if (py <= 0)
py = 1;
}
// Rendering
dogs_clear();
draw_rect(t1x, 0, 4, t1o - 10);
draw_rect(t1x, t1o + 10, 4, DISP_HEIGHT - t1o + 10);
draw_rect(t2x, 0, 4, t2o - 10);
draw_rect(t2x, t2o + 10, 4, DISP_HEIGHT - t2o + 10);
draw_bitmap(4, py, bird);
draw_number(DISP_WIDTH - 25, DISP_HEIGHT - 8, score);
dogs_flush();
// Game logic
if (t1x == 4)
score = (py + 2 > t1o - 10 && py + 6 < t1o + 10) ? score + 1 : 0;
if (t2x == 4)
score = (py + 2 > t2o - 10 && py + 6 < t2o + 10) ? score + 1 : 0;
t1x -= 2;
if (t1x <= -5) {
t1x = DISP_WIDTH;
t1o = NEW_BAR();
}
t2x -= 2;
if (t2x <= -5) {
t2x = DISP_WIDTH;
t2o = NEW_BAR();
}
return 100;
}
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