static char *interpret_move(game_state *state, game_ui *ui, game_drawstate *ds,
int x, int y, int button)
{
int gx, gy, dx, dy;
char buf[80];
button &= ~MOD_MASK;
gx = X(state, state->gap_pos);
gy = Y(state, state->gap_pos);
if (button == CURSOR_RIGHT && gx > 0)
dx = gx - 1, dy = gy;
else if (button == CURSOR_LEFT && gx < state->w-1)
dx = gx + 1, dy = gy;
else if (button == CURSOR_DOWN && gy > 0)
dy = gy - 1, dx = gx;
else if (button == CURSOR_UP && gy < state->h-1)
dy = gy + 1, dx = gx;
else if (button == LEFT_BUTTON) {
dx = FROMCOORD(x);
dy = FROMCOORD(y);
if (dx < 0 || dx >= state->w || dy < 0 || dy >= state->h)
return NULL; /* out of bounds */
/*
* Any click location should be equal to the gap location
* in _precisely_ one coordinate.
*/
if ((dx == gx && dy == gy) || (dx != gx && dy != gy))
return NULL;
} else
return NULL; /* no move */
sprintf(buf, "M%d,%d", dx, dy);
return dupstr(buf);
}
static char *interpret_move(game_state *state, game_ui *ui, const game_drawstate *ds,
int x, int y, int button)
{
int w = state->par.w;
int tx, ty;
char buf[80];
button &= ~MOD_MASK;
tx = FROMCOORD(x);
ty = FROMCOORD(y);
if (ds->three_d) {
/*
* In 3D mode, just locating the mouse click in the natural
* square grid may not be sufficient to tell which tower the
* user clicked on. Investigate the _tops_ of the nearby
* towers to see if a click on one grid square was actually
* a click on a tower protruding into that region from
* another.
*/
int dx, dy;
for (dy = 0; dy <= 1; dy++)
for (dx = 0; dx >= -1; dx--) {
int cx = tx + dx, cy = ty + dy;
if (cx >= 0 && cx < w && cy >= 0 && cy < w) {
int height = state->grid[cy*w+cx];
int bx = COORD(cx), by = COORD(cy);
int ox = bx + X_3D_DISP(height, w);
int oy = by - Y_3D_DISP(height, w);
if (/* on top face? */
(x - ox >= 0 && x - ox < TILESIZE &&
y - oy >= 0 && y - oy < TILESIZE) ||
/* in triangle between top-left corners? */
(ox > bx && x >= bx && x <= ox && y <= by &&
(by-y) * (ox-bx) <= (by-oy) * (x-bx)) ||
/* in triangle between bottom-right corners? */
(ox > bx && x >= bx+TILESIZE && x <= ox+TILESIZE &&
y >= oy+TILESIZE &&
(by-y+TILESIZE)*(ox-bx) >= (by-oy)*(x-bx-TILESIZE))) {
tx = cx;
ty = cy;
}
}
}
}
if (tx >= 0 && tx < w && ty >= 0 && ty < w) {
if (button == LEFT_BUTTON) {
if (tx == ui->hx && ty == ui->hy &&
ui->hshow && ui->hpencil == 0) {
ui->hshow = 0;
} else {
ui->hx = tx;
ui->hy = ty;
ui->hshow = !state->clues->immutable[ty*w+tx];
ui->hpencil = 0;
}
ui->hcursor = 0;
return ""; /* UI activity occurred */
}
if (button == RIGHT_BUTTON) {
/*
* Pencil-mode highlighting for non filled squares.
*/
if (state->grid[ty*w+tx] == 0) {
if (tx == ui->hx && ty == ui->hy &&
ui->hshow && ui->hpencil) {
ui->hshow = 0;
} else {
ui->hpencil = 1;
ui->hx = tx;
ui->hy = ty;
ui->hshow = 1;
}
} else {
ui->hshow = 0;
}
ui->hcursor = 0;
return ""; /* UI activity occurred */
}
}
if (IS_CURSOR_MOVE(button)) {
move_cursor(button, &ui->hx, &ui->hy, w, w, 0);
ui->hshow = ui->hcursor = 1;
return "";
}
if (ui->hshow &&
(button == CURSOR_SELECT)) {
ui->hpencil = 1 - ui->hpencil;
ui->hcursor = 1;
return "";
}
if (ui->hshow &&
((button >= '0' && button <= '9' && button - '0' <= w) ||
button == CURSOR_SELECT2 || button == '\b')) {
int n = button - '0';
if (button == CURSOR_SELECT2 || button == '\b')
n = 0;
/*
* Can't make pencil marks in a filled square. This can only
* become highlighted if we're using cursor keys.
*/
if (ui->hpencil && state->grid[ui->hy*w+ui->hx])
return NULL;
/*
* Can't do anything to an immutable square.
*/
if (state->clues->immutable[ui->hy*w+ui->hx])
return NULL;
sprintf(buf, "%c%d,%d,%d",
(char)(ui->hpencil && n > 0 ? 'P' : 'R'), ui->hx, ui->hy, n);
if (!ui->hcursor) ui->hshow = 0;
return dupstr(buf);
}
if (button == 'M' || button == 'm')
return dupstr("M");
return NULL;
}
static char *interpret_move(game_state *state, game_ui *ui, game_drawstate *ds,
int x, int y, int button)
{
int w = state->w, h = state->h, n = state->n /* , wh = w*h */;
char buf[80];
int dir;
button = button & (~MOD_MASK | MOD_NUM_KEYPAD);
if (IS_CURSOR_MOVE(button)) {
if (button == CURSOR_LEFT && ui->cur_x > 0)
ui->cur_x--;
if (button == CURSOR_RIGHT && (ui->cur_x+n) < (w))
ui->cur_x++;
if (button == CURSOR_UP && ui->cur_y > 0)
ui->cur_y--;
if (button == CURSOR_DOWN && (ui->cur_y+n) < (h))
ui->cur_y++;
ui->cur_visible = 1;
return "";
}
if (button == LEFT_BUTTON || button == RIGHT_BUTTON) {
/*
* Determine the coordinates of the click. We offset by n-1
* half-blocks so that the user must click at the centre of
* a rotation region rather than at the corner.
*/
x -= (n-1) * TILE_SIZE / 2;
y -= (n-1) * TILE_SIZE / 2;
x = FROMCOORD(x);
y = FROMCOORD(y);
dir = (button == LEFT_BUTTON ? 1 : -1);
if (x < 0 || x > w-n || y < 0 || y > h-n)
return NULL;
ui->cur_visible = 0;
} else if (IS_CURSOR_SELECT(button)) {
if (ui->cur_visible) {
x = ui->cur_x;
y = ui->cur_y;
dir = (button == CURSOR_SELECT2) ? -1 : +1;
} else {
ui->cur_visible = 1;
return "";
}
} else if (button == 'a' || button == 'A' || button==MOD_NUM_KEYPAD+'7') {
x = y = 0;
dir = (button == 'A' ? -1 : +1);
} else if (button == 'b' || button == 'B' || button==MOD_NUM_KEYPAD+'9') {
x = w-n;
y = 0;
dir = (button == 'B' ? -1 : +1);
} else if (button == 'c' || button == 'C' || button==MOD_NUM_KEYPAD+'1') {
x = 0;
y = h-n;
dir = (button == 'C' ? -1 : +1);
} else if (button == 'd' || button == 'D' || button==MOD_NUM_KEYPAD+'3') {
x = w-n;
y = h-n;
dir = (button == 'D' ? -1 : +1);
} else if (button==MOD_NUM_KEYPAD+'8' && (w-n) % 2 == 0) {
x = (w-n) / 2;
y = 0;
dir = +1;
} else if (button==MOD_NUM_KEYPAD+'2' && (w-n) % 2 == 0) {
x = (w-n) / 2;
y = h-n;
dir = +1;
} else if (button==MOD_NUM_KEYPAD+'4' && (h-n) % 2 == 0) {
x = 0;
y = (h-n) / 2;
dir = +1;
} else if (button==MOD_NUM_KEYPAD+'6' && (h-n) % 2 == 0) {
x = w-n;
y = (h-n) / 2;
dir = +1;
} else if (button==MOD_NUM_KEYPAD+'5' && (w-n) % 2 == 0 && (h-n) % 2 == 0){
x = (w-n) / 2;
y = (h-n) / 2;
dir = +1;
} else {
return NULL; /* no move to be made */
}
/*
* If we reach here, we have a valid move.
*/
sprintf(buf, "M%d,%d,%d", x, y, dir);
return dupstr(buf);
}
static char *interpret_move(game_state *state, game_ui *ui, game_drawstate *ds,
int x, int y, int button)
{
button &= ~MOD_MASK;
x = FROMCOORD(state->w, x);
y = FROMCOORD(state->h, y);
if (x >= 0 && x < state->w && y >= 0 && y < state->h &&
(button == LEFT_BUTTON || button == RIGHT_BUTTON ||
button == MIDDLE_BUTTON)) {
#ifdef STYLUS_BASED
int currstate = state->grid[y * state->w + x];
#endif
ui->dragging = TRUE;
if (button == LEFT_BUTTON) {
ui->drag = LEFT_DRAG;
ui->release = LEFT_RELEASE;
#ifdef STYLUS_BASED
ui->state = (currstate + 2) % 3; /* FULL -> EMPTY -> UNKNOWN */
#else
ui->state = GRID_FULL;
#endif
} else if (button == RIGHT_BUTTON) {
ui->drag = RIGHT_DRAG;
ui->release = RIGHT_RELEASE;
#ifdef STYLUS_BASED
ui->state = (currstate + 1) % 3; /* EMPTY -> FULL -> UNKNOWN */
#else
ui->state = GRID_EMPTY;
#endif
} else /* if (button == MIDDLE_BUTTON) */ {
ui->drag = MIDDLE_DRAG;
ui->release = MIDDLE_RELEASE;
ui->state = GRID_UNKNOWN;
}
ui->drag_start_x = ui->drag_end_x = x;
ui->drag_start_y = ui->drag_end_y = y;
ui->cur_visible = 0;
return ""; /* UI activity occurred */
}
if (ui->dragging && button == ui->drag) {
/*
* There doesn't seem much point in allowing a rectangle
* drag; people will generally only want to drag a single
* horizontal or vertical line, so we make that easy by
* snapping to it.
*
* Exception: if we're _middle_-button dragging to tag
* things as UNKNOWN, we may well want to trash an entire
* area and start over!
*/
if (ui->state != GRID_UNKNOWN) {
if (abs(x - ui->drag_start_x) > abs(y - ui->drag_start_y))
y = ui->drag_start_y;
else
x = ui->drag_start_x;
}
if (x < 0) x = 0;
if (y < 0) y = 0;
if (x >= state->w) x = state->w - 1;
if (y >= state->h) y = state->h - 1;
ui->drag_end_x = x;
ui->drag_end_y = y;
return ""; /* UI activity occurred */
}
if (ui->dragging && button == ui->release) {
int x1, x2, y1, y2, xx, yy;
int move_needed = FALSE;
x1 = min(ui->drag_start_x, ui->drag_end_x);
x2 = max(ui->drag_start_x, ui->drag_end_x);
y1 = min(ui->drag_start_y, ui->drag_end_y);
y2 = max(ui->drag_start_y, ui->drag_end_y);
for (yy = y1; yy <= y2; yy++)
for (xx = x1; xx <= x2; xx++)
if (state->grid[yy * state->w + xx] != ui->state)
move_needed = TRUE;
ui->dragging = FALSE;
if (move_needed) {
char buf[80];
sprintf(buf, "%c%d,%d,%d,%d",
(char)(ui->state == GRID_FULL ? 'F' :
ui->state == GRID_EMPTY ? 'E' : 'U'),
x1, y1, x2-x1+1, y2-y1+1);
return dupstr(buf);
} else
return ""; /* UI activity occurred */
}
if (IS_CURSOR_MOVE(button)) {
move_cursor(button, &ui->cur_x, &ui->cur_y, state->w, state->h, 0);
ui->cur_visible = 1;
return "";
}
if (IS_CURSOR_SELECT(button)) {
int currstate = state->grid[ui->cur_y * state->w + ui->cur_x];
int newstate;
char buf[80];
if (!ui->cur_visible) {
ui->cur_visible = 1;
return "";
}
if (button == CURSOR_SELECT2)
newstate = currstate == GRID_UNKNOWN ? GRID_EMPTY :
currstate == GRID_EMPTY ? GRID_FULL : GRID_UNKNOWN;
else
newstate = currstate == GRID_UNKNOWN ? GRID_FULL :
currstate == GRID_FULL ? GRID_EMPTY : GRID_UNKNOWN;
sprintf(buf, "%c%d,%d,%d,%d",
(char)(newstate == GRID_FULL ? 'F' :
newstate == GRID_EMPTY ? 'E' : 'U'),
ui->cur_x, ui->cur_y, 1, 1);
return dupstr(buf);
}
return NULL;
}
