/* void draw_moving_wall()
* draw moving wall. */
void draw_moving_wall() {
/* x way moving wall difinition */
typedef struct {
uint32_t x;
uint32_t y;
int32_t vx;
char str[4];
} x_move_wall_t;
static x_move_wall_t s_x_wall = {
4, 3, 1, "---"
};
/* movement */
s_x_wall.x += s_x_wall.vx;
/* collision judgement */
if (s_x_wall.vx > 0) {
/* right edge collison */
if (get_screen_cache(s_x_wall.x + s_x_wall.vx + 2, s_x_wall.y) == '+')
s_x_wall.vx *= -1;
} else {
/* left edge collison */
if (get_screen_cache(s_x_wall.x + s_x_wall.vx, s_x_wall.y) == '+')
s_x_wall.vx *= -1;
}
/* draw */
set_screen_cache(s_x_wall.x, s_x_wall.y, s_x_wall.str[0]);
set_screen_cache(s_x_wall.x + 1, s_x_wall.y, s_x_wall.str[1]);
set_screen_cache(s_x_wall.x + 2, s_x_wall.y, s_x_wall.str[2]);
}
/* void draw_moving_wall(ball_t*)
* draw moving wall. */
void draw_moving_wall() {
/* x way moving wall difinition */
typedef struct {
uint32_t x;
uint32_t y;
int32_t vx;
int32_t vy;
char str[4];
} move_wall_t;
uint32_t i = 0;
static uint8_t s_first_flag = 1;
static move_wall_t s_x_walls[X_WALL_NUM];
/* set movement of walls */
for (i = 0; i < X_WALL_NUM; i++) {
if (s_first_flag == 1) {
s_x_walls[i].x = 5 * i + 5;
s_x_walls[i].y = 3 * i + 1;
s_x_walls[i].vx = 1;
s_x_walls[i].str[0] = g_cache.fg;
s_x_walls[i].str[1] = g_cache.fg;
s_x_walls[i].str[2] = g_cache.fg;
}
/* movement */
s_x_walls[i].x += s_x_walls[i].vx;
/* collision judgement */
if (s_x_walls[i].vx > 0) {
/* right edge collison */
if (get_screen_cache(
&g_cache,
s_x_walls[i].x + s_x_walls[i].vx + sizeof(s_x_walls[i].str) - 2,
s_x_walls[i].y)
== g_cache.fg)
s_x_walls[i].vx *= -1;
} else {
/* left edge collison */
if (get_screen_cache(
&g_cache,
s_x_walls[i].x + s_x_walls[i].vx, s_x_walls[i].y)
== g_cache.fg)
s_x_walls[i].vx *= -1;
}
/* draw */
set_screen_cache(
&g_cache, s_x_walls[i].x, s_x_walls[i].y, s_x_walls[i].str[0]);
set_screen_cache(
&g_cache, s_x_walls[i].x + 1, s_x_walls[i].y, s_x_walls[i].str[1]);
set_screen_cache(
&g_cache, s_x_walls[i].x + 2, s_x_walls[i].y, s_x_walls[i].str[2]);
}
s_first_flag = 0;
}
void set_last_screen(u64 id, screen_t * scr)
{
screen_cache * cache = get_screen_cache(id);
assert((scr == nullptr) || (cache->last_screen != scr));
cache->last_screen = scr;
if (scr) {
const codepoint_info_s * first_cpinfo;
screen_get_first_cpinfo(scr, &first_cpinfo);
cache->start_offset = first_cpinfo->offset;
}
}
/* void control_ball(ball_t*)
* draw ball bounding on wall. */
void control_ball() {
/* charactor data definition */
typedef struct {
uint32_t x;
uint32_t y;
int32_t vx;
int32_t vy;
char c;
} ball_t;
static ball_t s_ball;
static uint8_t s_first_flag = 1;
/* initialize s_ball */
if (s_first_flag == 1) {
s_ball.x = 6;
s_ball.y = 4;
s_ball.vx = 1;
s_ball.vy = -1;
s_ball.c = '*';
s_first_flag = 0;
}
/* movement */
s_ball.x += s_ball.vx;
s_ball.y += s_ball.vy;
/* collision judgement */
if (get_screen_cache(&g_cache, s_ball.x + s_ball.vx, s_ball.y)
== g_cache.fg)
s_ball.vx *= -1;
if (get_screen_cache(&g_cache, s_ball.x, s_ball.y + s_ball.vy)
== g_cache.fg)
s_ball.vy *= -1;
if (s_ball.vx * s_ball.vy > 0) s_ball.c = '\\';
else s_ball.c = '/';
/* draw */
set_screen_cache(&g_cache, s_ball.x, s_ball.y, s_ball.c);
}
screen_t * get_new_screen_by_id(u64 screen_id)
{
auto cache = get_screen_cache(screen_id);
if (!cache) {
assert(0);
return nullptr;
}
screen_t * scr = nullptr;
screen_alloc_with_dimension(&scr, __PRETTY_FUNCTION__, &cache->dim);
assert(scr);
screen_set_start_offset(scr, cache->start_offset);
return scr;
}
screen_t * get_last_screen(u64 id)
{
screen_cache * cache = get_screen_cache(id);
assert(cache);
return cache->last_screen;
}
