void move_cursor(WINDOW* wnd, int x, int y)
{
assert(x >= 0 && x < wnd->width && y >= 0 && y < wnd->height);
// assert(0) causes always failure
wnd->cursor_x = x;
wnd->cursor_y = y;
if (wnd->cursor_x >= wnd->width) {
wnd->cursor_x = 0;
wnd->cursor_y++;
}
if (wnd->cursor_y >= wnd->height) {
int x_len = wnd->x + wnd->width;
int y_len = wnd->y + wnd->height;
int i, j, offset_1, offset_2;
for (i = wnd->x; i < x_len; i++) {
for (j = wnd->y; j < y_len; j++) {
offset_1 = j * (80 * 2) + i * 2;
offset_2 = (j + 1) * (80 * 2) + i * 2;
poke_w(0xb8000 + offset_1, peek_b(0xb8000 + offset_2) | 0x0f00);
poke_w(0xb8000 + offset_2, 0x0020);
}
}
wnd->cursor_y--;
}
}
void output_string(WINDOW* wnd, const char *str){
volatile int saved_if;
DISABLE_INTR(saved_if);
short tempchar;
int len, i = 0;
len = k_strlen(str);
while(i < len){
tempchar = (0x0f << 8) | str[i];
if(str[i] != '\n'){
poke_w(0xb8000 + ((wnd->x + wnd->cursor_x)*2) + ((wnd->y + wnd->cursor_y)*160) , tempchar);
}
if(wnd->cursor_x+1 >= wnd->width || str[i] == '\n'){
if(wnd->cursor_y +1 >= wnd->height){
scroll(wnd);
}
else{wnd->cursor_y++;}
wnd->cursor_x =0;
}
else{
wnd->cursor_x++;
}
i++;
}
ENABLE_INTR(saved_if);
}
void show_cursor(WINDOW* wnd){
volatile int saved_if;
DISABLE_INTR(saved_if);
short cursor = (0x82 << 8) | wnd->cursor_char;
poke_w(0xb8000 + ((wnd->x + wnd->cursor_x)*2) + ((wnd->y + wnd->cursor_y)*160) , cursor);
ENABLE_INTR(saved_if);
}
void clear_window(WINDOW* wnd)
{
int i;
MEM_ADDR offset = wnd->y * (79 * 2) + wnd->x * 2;
for (i = 0; i < wnd->width * wnd->height; i++)
poke_w(0xb8000 + offset + i * 2, 0);
wnd->cursor_x = 0;
wnd->cursor_y = 0;
show_cursor(wnd);
}
void output_char(WINDOW* wnd, unsigned char c)
{
remove_cursor(wnd);
MEM_ADDR offset = (wnd->cursor_y + wnd->y) * (80 * 2) + (wnd->x + wnd->cursor_x) * 2;
if (c == '\n') {
move_cursor(wnd, 0, wnd->cursor_y + 1);
} else {
poke_w(0xb8000 + offset, c | 0x0f00);
move_cursor(wnd, wnd->cursor_x + 1, wnd->cursor_y);
}
show_cursor(wnd);
}
void clear_window(WINDOW* wnd){
volatile int saved_if;
DISABLE_INTR(saved_if);
int w, h;
for(h=0; h < wnd->height; h++){
for(w=0; w < wnd->width; w++){
poke_w(0xb8000 + ((wnd->x + w)*2) + ((wnd->y + h)*160) ,0);
}
}
wnd->cursor_x = 0;
wnd->cursor_y = 0;
ENABLE_INTR(saved_if);
}
void move_ghost(GHOST *ghost)
{
int x, y;
WORD *cl;
volatile int saved_if;
DISABLE_INTR(saved_if);
while (1)
{
x = (random() % 4) - 1;
y = 0;
if ((x % 2) == 0)
{
y = x - 1;
x = 0;
}
if (maze[ghost->y + y][ghost->x + x] == ' ')
{
break;
}
}
/* save ghost locations in maze */
/* add/remove characters from pacman_wnd directly as only 1 cursor per window */
maze[ghost->y][ghost->x] = ' ';
cl = (WORD*)WINDOW_BASE_ADDR + WINDOW_OFFSET(pacman_wnd, ghost->x, ghost->y);
poke_w((MEM_ADDR)cl, ' ' | 0x0F00);
ghost->x += x;
ghost->y += y;
maze[ghost->y][ghost->x] = GHOST_CHAR;
cl = (WORD*)WINDOW_BASE_ADDR + WINDOW_OFFSET(pacman_wnd, ghost->x, ghost->y);
poke_w((MEM_ADDR)cl, GHOST_CHAR | 0x0F00);
ENABLE_INTR(saved_if);
}
void output_char(WINDOW* wnd, unsigned char c){
volatile int saved_if;
DISABLE_INTR(saved_if);
short tempchar = (0x0f << 8) | c;
if(c != '\n'){
poke_w(0xb8000 + ((wnd->x + wnd->cursor_x)*2) + ((wnd->y + wnd->cursor_y)*160) , tempchar);
}
if(wnd->cursor_x+1 >= wnd->width || c == '\n'){
if(wnd->cursor_y +1 >= wnd->height){
scroll(wnd);
}
else{wnd->cursor_y++;}
wnd->cursor_x =0;
}
else{
wnd->cursor_x++;
}
ENABLE_INTR(saved_if);
}
void poke_screen(int x, int y, WORD ch)
{
poke_w(SCREEN_BASE_ADDR + y * SCREEN_WIDTH * 2 + x * 2, ch);
}
void poke_screen(int x, int y, WORD ch)
{
poke_w(DISP_START_ADDR + y * DISP_WIDTH * 2 + x * 2, ch);
}
void remove_cursor(WINDOW* wnd){
volatile int saved_if;
DISABLE_INTR(saved_if);
poke_w(0xb8000 + ((wnd->x + wnd->cursor_x)*2) + ((wnd->y + wnd->cursor_y)*160) , 0);
ENABLE_INTR(saved_if);
}
void show_cursor(WINDOW* wnd)
{
MEM_ADDR offset = (wnd->cursor_y + wnd->y) * (80 * 2) + (wnd->x + wnd->cursor_x) * 2;
// wnd->cursor_char = 0x5f;
poke_w(0xb8000 + offset, wnd->cursor_char | 0x0f00);
}
void remove_cursor(WINDOW* wnd)
{
MEM_ADDR offset = (wnd->cursor_y + wnd->y) * (80 * 2) + (wnd->x + wnd->cursor_x) * 2;
poke_w(0xb8000 + offset, 0x0020);
}