/*
* move_slime:
* move the given slime shot speed times and add it back if
* it hasn't fizzled yet
*/
static void
move_slime(BULLET *bp, int speed, BULLET *next)
{
int i, j, dirmask, count;
PLAYER *pp;
BULLET *nbp;
if (speed == 0) {
if (bp->b_charge <= 0)
free(bp);
else
save_bullet(bp);
return;
}
/* Draw it: */
showexpl(bp->b_y, bp->b_x, bp->b_type == LAVA ? LAVA : '*');
switch (Maze[bp->b_y][bp->b_x]) {
/* Someone got hit by slime or lava: */
case LEFTS:
case RIGHT:
case ABOVE:
case BELOW:
case FLYER:
pp = play_at(bp->b_y, bp->b_x);
message(pp, "You've been slimed.");
checkdam(pp, bp->b_owner, bp->b_score, conf_mindam, bp->b_type);
break;
/* Bullets detonate in slime and lava: */
case SHOT:
case GRENADE:
case SATCHEL:
case BOMB:
case DSHOT:
explshot(next, bp->b_y, bp->b_x);
explshot(Bullets, bp->b_y, bp->b_x);
break;
}
/* Drain the slime/lava of some energy: */
if (--bp->b_charge <= 0) {
/* It fizzled: */
free(bp);
return;
}
/* Figure out which way the slime should flow: */
dirmask = 0;
count = 0;
switch (bp->b_face) {
case LEFTS:
if (!iswall(bp->b_y, bp->b_x - 1))
dirmask |= WEST, count++;
if (!iswall(bp->b_y - 1, bp->b_x))
dirmask |= NORTH, count++;
if (!iswall(bp->b_y + 1, bp->b_x))
dirmask |= SOUTH, count++;
if (dirmask == 0)
if (!iswall(bp->b_y, bp->b_x + 1))
dirmask |= EAST, count++;
break;
case RIGHT:
if (!iswall(bp->b_y, bp->b_x + 1))
dirmask |= EAST, count++;
if (!iswall(bp->b_y - 1, bp->b_x))
dirmask |= NORTH, count++;
if (!iswall(bp->b_y + 1, bp->b_x))
dirmask |= SOUTH, count++;
if (dirmask == 0)
if (!iswall(bp->b_y, bp->b_x - 1))
dirmask |= WEST, count++;
break;
case ABOVE:
if (!iswall(bp->b_y - 1, bp->b_x))
dirmask |= NORTH, count++;
if (!iswall(bp->b_y, bp->b_x - 1))
dirmask |= WEST, count++;
if (!iswall(bp->b_y, bp->b_x + 1))
dirmask |= EAST, count++;
if (dirmask == 0)
if (!iswall(bp->b_y + 1, bp->b_x))
dirmask |= SOUTH, count++;
break;
case BELOW:
if (!iswall(bp->b_y + 1, bp->b_x))
dirmask |= SOUTH, count++;
if (!iswall(bp->b_y, bp->b_x - 1))
dirmask |= WEST, count++;
if (!iswall(bp->b_y, bp->b_x + 1))
dirmask |= EAST, count++;
if (dirmask == 0)
if (!iswall(bp->b_y - 1, bp->b_x))
dirmask |= NORTH, count++;
break;
}
if (count == 0) {
/*
* No place to go. Just sit here for a while and wait
* for adjacent squares to clear out.
*/
save_bullet(bp);
return;
}
if (bp->b_charge < count) {
/* Only bp->b_charge paths may be taken */
while (count > bp->b_charge) {
if (dirmask & WEST)
dirmask &= ~WEST;
else if (dirmask & EAST)
dirmask &= ~EAST;
else if (dirmask & NORTH)
dirmask &= ~NORTH;
else if (dirmask & SOUTH)
dirmask &= ~SOUTH;
count--;
}
}
/* Spawn little slimes off in every possible direction: */
i = bp->b_charge / count;
j = bp->b_charge % count;
if (dirmask & WEST) {
count--;
nbp = create_shot(bp->b_type, bp->b_y, bp->b_x - 1, LEFTS,
i, bp->b_size, bp->b_owner, bp->b_score, TRUE, SPACE);
move_slime(nbp, speed - 1, next);
}
if (dirmask & EAST) {
count--;
nbp = create_shot(bp->b_type, bp->b_y, bp->b_x + 1, RIGHT,
(count < j) ? i + 1 : i, bp->b_size, bp->b_owner,
bp->b_score, TRUE, SPACE);
move_slime(nbp, speed - 1, next);
}
if (dirmask & NORTH) {
count--;
nbp = create_shot(bp->b_type, bp->b_y - 1, bp->b_x, ABOVE,
(count < j) ? i + 1 : i, bp->b_size, bp->b_owner,
bp->b_score, TRUE, SPACE);
move_slime(nbp, speed - 1, next);
}
if (dirmask & SOUTH) {
count--;
nbp = create_shot(bp->b_type, bp->b_y + 1, bp->b_x, BELOW,
(count < j) ? i + 1 : i, bp->b_size, bp->b_owner,
bp->b_score, TRUE, SPACE);
move_slime(nbp, speed - 1, next);
}
free(bp);
}
/*
* chkshot
* Handle explosions
*/
static void
chkshot(BULLET *bp, BULLET *next)
{
int y, x;
int dy, dx, absdy;
int delta, damage;
char expl;
PLAYER *pp;
delta = 0;
switch (bp->b_type) {
case SHOT:
case MINE:
case GRENADE:
case GMINE:
case SATCHEL:
case BOMB:
delta = bp->b_size - 1;
break;
case SLIME:
case LAVA:
chkslime(bp, next);
return;
case DSHOT:
bp->b_type = SLIME;
chkslime(bp, next);
return;
}
/* Draw the explosion square: */
for (y = bp->b_y - delta; y <= bp->b_y + delta; y++) {
if (y < 0 || y >= HEIGHT)
continue;
dy = y - bp->b_y;
absdy = (dy < 0) ? -dy : dy;
for (x = bp->b_x - delta; x <= bp->b_x + delta; x++) {
/* Draw a part of the explosion cloud: */
if (x < 0 || x >= WIDTH)
continue;
dx = x - bp->b_x;
if (dx == 0)
expl = (dy == 0) ? '*' : '|';
else if (dy == 0)
expl = '-';
else if (dx == dy)
expl = '\\';
else if (dx == -dy)
expl = '/';
else
expl = '*';
showexpl(y, x, expl);
/* Check what poor bastard was in the explosion: */
switch (Maze[y][x]) {
case LEFTS:
case RIGHT:
case ABOVE:
case BELOW:
case FLYER:
if (dx < 0)
dx = -dx;
if (absdy > dx)
damage = bp->b_size - absdy;
else
damage = bp->b_size - dx;
/* Everybody hurts, sometimes. */
pp = play_at(y, x);
checkdam(pp, bp->b_owner, bp->b_score,
damage * conf_mindam, bp->b_type);
break;
case GMINE:
case MINE:
/* Mines detonate in a chain reaction: */
add_shot((Maze[y][x] == GMINE) ?
GRENADE : SHOT,
y, x, LEFTS,
(Maze[y][x] == GMINE) ?
GRENREQ : BULREQ,
NULL, TRUE, SPACE);
Maze[y][x] = SPACE;
break;
}
}
}
}
/*
* move_player:
* Execute a move in the given direction
*/
static void
move_player(PLAYER *pp, int dir)
{
PLAYER *newp;
int x, y;
bool moved;
BULLET *bp;
y = pp->p_y;
x = pp->p_x;
switch (dir) {
case LEFTS:
x--;
break;
case RIGHT:
x++;
break;
case ABOVE:
y--;
break;
case BELOW:
y++;
break;
}
moved = false;
switch (Maze[y][x]) {
case SPACE:
#ifdef RANDOM
case DOOR:
#endif
moved = true;
break;
case WALL1:
case WALL2:
case WALL3:
#ifdef REFLECT
case WALL4:
case WALL5:
#endif
break;
case MINE:
case GMINE:
if (dir == pp->p_face)
pickup(pp, y, x, 2, Maze[y][x]);
else if (opposite(dir, pp->p_face))
pickup(pp, y, x, 95, Maze[y][x]);
else
pickup(pp, y, x, 50, Maze[y][x]);
Maze[y][x] = SPACE;
moved = true;
break;
case SHOT:
case GRENADE:
case SATCHEL:
case BOMB:
#ifdef OOZE
case SLIME:
#endif
#ifdef DRONE
case DSHOT:
#endif
bp = is_bullet(y, x);
if (bp != NULL)
bp->b_expl = true;
Maze[y][x] = SPACE;
moved = true;
break;
case LEFTS:
case RIGHT:
case ABOVE:
case BELOW:
if (dir != pp->p_face)
sendcom(pp, BELL);
else {
newp = play_at(y, x);
checkdam(newp, pp, pp->p_ident, STABDAM, KNIFE);
}
break;
#ifdef FLY
case FLYER:
newp = play_at(y, x);
message(newp, "Oooh, there's a short guy waving at you!");
message(pp, "You couldn't quite reach him!");
break;
#endif
#ifdef BOOTS
case BOOT:
case BOOT_PAIR:
if (Maze[y][x] == BOOT)
pp->p_nboots++;
else
pp->p_nboots += 2;
for (newp = Boot; newp < &Boot[NBOOTS]; newp++) {
if (newp->p_flying < 0)
continue;
if (newp->p_y == y && newp->p_x == x) {
newp->p_flying = -1;
if (newp->p_undershot)
fixshots(y, x, newp->p_over);
}
}
if (pp->p_nboots == 2)
message(pp, "Wow! A pair of boots!");
else
message(pp, "You can hobble around on one boot.");
Maze[y][x] = SPACE;
moved = true;
break;
#endif
}
if (moved) {
if (pp->p_ncshot > 0)
if (--pp->p_ncshot == MAXNCSHOT) {
cgoto(pp, STAT_GUN_ROW, STAT_VALUE_COL);
outstr(pp, " ok", 3);
}
if (pp->p_undershot) {
fixshots(pp->p_y, pp->p_x, pp->p_over);
pp->p_undershot = false;
}
drawplayer(pp, false);
pp->p_over = Maze[y][x];
pp->p_y = y;
pp->p_x = x;
drawplayer(pp, true);
}
}
/*
* move_flyer:
* Update the position of a player in flight
*/
static void
move_flyer(PLAYER *pp)
{
int x, y;
if (pp->p_undershot) {
fixshots(pp->p_y, pp->p_x, pp->p_over);
pp->p_undershot = FALSE;
}
/* Restore what the flier was flying over */
Maze[pp->p_y][pp->p_x] = pp->p_over;
/* Fly: */
x = pp->p_x + pp->p_flyx;
y = pp->p_y + pp->p_flyy;
/* Bouncing off the edges of the maze: */
if (x < 1) {
x = 1 - x;
pp->p_flyx = -pp->p_flyx;
}
else if (x > WIDTH - 2) {
x = (WIDTH - 2) - (x - (WIDTH - 2));
pp->p_flyx = -pp->p_flyx;
}
if (y < 1) {
y = 1 - y;
pp->p_flyy = -pp->p_flyy;
}
else if (y > HEIGHT - 2) {
y = (HEIGHT - 2) - (y - (HEIGHT - 2));
pp->p_flyy = -pp->p_flyy;
}
/* Make sure we don't land on something we can't: */
again:
switch (Maze[y][x]) {
default:
/*
* Flier is over something other than space, a wall
* or a door. Randomly move (drift) the flier a little bit
* and then try again:
*/
switch (rand_num(4)) {
case 0:
PLUS_DELTA(x, WIDTH - 2);
break;
case 1:
MINUS_DELTA(x, 1);
break;
case 2:
PLUS_DELTA(y, HEIGHT - 2);
break;
case 3:
MINUS_DELTA(y, 1);
break;
}
goto again;
/* Give a little boost when about to land on a wall or door: */
case WALL1:
case WALL2:
case WALL3:
case WALL4:
case WALL5:
case DOOR:
if (pp->p_flying == 0)
pp->p_flying++;
break;
/* Spaces are okay: */
case SPACE:
break;
}
/* Update flier's coordinates: */
pp->p_y = y;
pp->p_x = x;
/* Consume 'flying' time: */
if (pp->p_flying-- == 0) {
/* Land: */
if (pp->p_face != BOOT && pp->p_face != BOOT_PAIR) {
/* Land a player - they stustain a fall: */
checkdam(pp, NULL, NULL,
rand_num(pp->p_damage / conf_fall_frac), FALL);
pp->p_face = rand_dir();
showstat(pp);
} else {
/* Land boots: */
if (Maze[y][x] == BOOT)
pp->p_face = BOOT_PAIR;
Maze[y][x] = SPACE;
}
}
/* Save under the flier: */
pp->p_over = Maze[y][x];
/* Draw in the flier: */
Maze[y][x] = pp->p_face;
showexpl(y, x, pp->p_face);
}
/*
* move_player:
* Try to move player 'pp' in direction 'dir'.
*/
static void
move_player(PLAYER *pp, int dir)
{
PLAYER *newp;
int x, y;
FLAG moved;
BULLET *bp;
y = pp->p_y;
x = pp->p_x;
switch (dir) {
case LEFTS:
x--;
break;
case RIGHT:
x++;
break;
case ABOVE:
y--;
break;
case BELOW:
y++;
break;
}
moved = FALSE;
/* What would the player move over: */
switch (Maze[y][x]) {
/* Players can move through spaces and doors, no problem: */
case SPACE:
case DOOR:
moved = TRUE;
break;
/* Can't move through walls: */
case WALL1:
case WALL2:
case WALL3:
case WALL4:
case WALL5:
break;
/* Moving over a mine - try to pick it up: */
case MINE:
case GMINE:
if (dir == pp->p_face)
/* facing it: 2% chance of trip */
pickup(pp, y, x, conf_ptrip_face, Maze[y][x]);
else if (opposite(dir, pp->p_face))
/* facing away: 95% chance of trip */
pickup(pp, y, x, conf_ptrip_back, Maze[y][x]);
else
/* facing sideways: 50% chance of trip */
pickup(pp, y, x, conf_ptrip_side, Maze[y][x]);
/* Remove the mine: */
Maze[y][x] = SPACE;
moved = TRUE;
break;
/* Moving into a bullet: */
case SHOT:
case GRENADE:
case SATCHEL:
case BOMB:
case SLIME:
case DSHOT:
/* Find which bullet: */
bp = is_bullet(y, x);
if (bp != NULL)
/* Detonate it: */
bp->b_expl = TRUE;
/* Remove it: */
Maze[y][x] = SPACE;
moved = TRUE;
break;
/* Moving into another player: */
case LEFTS:
case RIGHT:
case ABOVE:
case BELOW:
if (dir != pp->p_face)
/* Can't walk backwards/sideways into another player: */
sendcom(pp, BELL);
else {
/* Stab the other player */
newp = play_at(y, x);
checkdam(newp, pp, pp->p_ident, conf_stabdam, KNIFE);
}
break;
/* Moving into a player flying overhead: */
case FLYER:
newp = play_at(y, x);
message(newp, "Oooh, there's a short guy waving at you!");
message(pp, "You couldn't quite reach him!");
break;
/* Picking up a boot, or two: */
case BOOT_PAIR:
pp->p_nboots++;
case BOOT:
pp->p_nboots++;
for (newp = Boot; newp < &Boot[NBOOTS]; newp++) {
if (newp->p_flying < 0)
continue;
if (newp->p_y == y && newp->p_x == x) {
newp->p_flying = -1;
if (newp->p_undershot)
fixshots(y, x, newp->p_over);
}
}
if (pp->p_nboots == 2)
message(pp, "Wow! A pair of boots!");
else
message(pp, "You can hobble around on one boot.");
Maze[y][x] = SPACE;
moved = TRUE;
break;
}
/* Can the player be moved? */
if (moved) {
/* Check the gun status: */
if (pp->p_ncshot > 0)
if (--pp->p_ncshot == conf_maxncshot)
outyx(pp, STAT_GUN_ROW, STAT_VALUE_COL, " ok");
/* Check for bullets flying past: */
if (pp->p_undershot) {
fixshots(pp->p_y, pp->p_x, pp->p_over);
pp->p_undershot = FALSE;
}
/* Erase the player: */
drawplayer(pp, FALSE);
/* Save under: */
pp->p_over = Maze[y][x];
/* Move the player: */
pp->p_y = y;
pp->p_x = x;
/* Draw the player in their new position */
drawplayer(pp, TRUE);
}
}