static void
spathi_intelligence (ELEMENT *ShipPtr, EVALUATE_DESC *ObjectsOfConcern,
COUNT ConcernCounter)
{
STARSHIP *StarShipPtr;
EVALUATE_DESC *lpEvalDesc;
ship_intelligence (ShipPtr, ObjectsOfConcern, ConcernCounter);
GetElementStarShip (ShipPtr, &StarShipPtr);
StarShipPtr->ship_input_state &= ~SPECIAL;
lpEvalDesc = &ObjectsOfConcern[ENEMY_SHIP_INDEX];
if (StarShipPtr->special_counter == 0
&& lpEvalDesc->ObjectPtr
&& lpEvalDesc->which_turn <= 24)
{
COUNT travel_facing, direction_facing;
SIZE delta_x, delta_y;
travel_facing = NORMALIZE_FACING (
ANGLE_TO_FACING (GetVelocityTravelAngle (&ShipPtr->velocity)
+ HALF_CIRCLE)
);
delta_x = lpEvalDesc->ObjectPtr->current.location.x
- ShipPtr->current.location.x;
delta_y = lpEvalDesc->ObjectPtr->current.location.y
- ShipPtr->current.location.y;
direction_facing = NORMALIZE_FACING (
ANGLE_TO_FACING (ARCTAN (delta_x, delta_y))
);
if (NORMALIZE_FACING (direction_facing
- (StarShipPtr->ShipFacing + ANGLE_TO_FACING (HALF_CIRCLE))
+ ANGLE_TO_FACING (QUADRANT))
<= ANGLE_TO_FACING (HALF_CIRCLE)
&& (lpEvalDesc->which_turn <= 8
|| NORMALIZE_FACING (direction_facing
+ ANGLE_TO_FACING (HALF_CIRCLE)
- ANGLE_TO_FACING (GetVelocityTravelAngle (
&lpEvalDesc->ObjectPtr->velocity
))
+ ANGLE_TO_FACING (QUADRANT))
<= ANGLE_TO_FACING (HALF_CIRCLE))
&& (!(StarShipPtr->cur_status_flags &
(SHIP_BEYOND_MAX_SPEED | SHIP_IN_GRAVITY_WELL))
|| NORMALIZE_FACING (direction_facing
- travel_facing + ANGLE_TO_FACING (QUADRANT))
<= ANGLE_TO_FACING (HALF_CIRCLE)))
StarShipPtr->ship_input_state |= SPECIAL;
}
}
static void
doggy_preprocess (ELEMENT *ElementPtr)
{
STARSHIP *StarShipPtr;
GetElementStarShip (ElementPtr, &StarShipPtr);
++StarShipPtr->special_counter;
if (ElementPtr->thrust_wait > 0) /* could be non-zero after a collision */
--ElementPtr->thrust_wait;
else
{
COUNT facing, orig_facing;
SIZE delta_facing;
facing = orig_facing =
NORMALIZE_FACING (ANGLE_TO_FACING (
GetVelocityTravelAngle (&ElementPtr->velocity)
));
if ((delta_facing = TrackShip (ElementPtr, &facing)) < 0)
facing = NORMALIZE_FACING (TFB_Random ());
else
{
ELEMENT *ShipPtr;
LockElement (ElementPtr->hTarget, &ShipPtr);
facing = NORMALIZE_FACING (ANGLE_TO_FACING (
ARCTAN (ShipPtr->current.location.x -
ElementPtr->current.location.x,
ShipPtr->current.location.y -
ElementPtr->current.location.y)
));
delta_facing = NORMALIZE_FACING (facing -
GetFrameIndex (ShipPtr->current.image.frame));
UnlockElement (ElementPtr->hTarget);
if (delta_facing > ANGLE_TO_FACING (HALF_CIRCLE - OCTANT) &&
delta_facing < ANGLE_TO_FACING (HALF_CIRCLE + OCTANT))
{
if (delta_facing >= ANGLE_TO_FACING (HALF_CIRCLE))
facing -= ANGLE_TO_FACING (QUADRANT);
else
facing += ANGLE_TO_FACING (QUADRANT);
}
facing = NORMALIZE_FACING (facing);
}
if (facing != orig_facing)
SetVelocityVector (&ElementPtr->velocity,
DOGGY_SPEED, facing);
}
}
static void
bubble_preprocess (ELEMENT *ElementPtr)
{
BYTE thrust_wait, turn_wait;
thrust_wait = HINIBBLE (ElementPtr->turn_wait);
turn_wait = LONIBBLE (ElementPtr->turn_wait);
if (thrust_wait > 0)
--thrust_wait;
else
{
ElementPtr->next.image.frame =
IncFrameIndex (ElementPtr->current.image.frame);
ElementPtr->state_flags |= CHANGING;
thrust_wait = (BYTE)((COUNT)TFB_Random () & 3);
}
if (turn_wait > 0)
--turn_wait;
else
{
COUNT facing;
SIZE delta_facing;
facing = NORMALIZE_FACING (ANGLE_TO_FACING (
GetVelocityTravelAngle (&ElementPtr->velocity)));
if ((delta_facing = TrackShip (ElementPtr, &facing)) == -1)
facing = (COUNT)TFB_Random ();
else if (delta_facing <= ANGLE_TO_FACING (HALF_CIRCLE))
facing += (COUNT)TFB_Random () & (ANGLE_TO_FACING (HALF_CIRCLE) - 1);
else
facing -= (COUNT)TFB_Random () & (ANGLE_TO_FACING (HALF_CIRCLE) - 1);
SetVelocityVector (&ElementPtr->velocity,
MISSILE_SPEED, facing);
#define TRACK_WAIT 2
turn_wait = TRACK_WAIT;
}
ElementPtr->turn_wait = MAKE_BYTE (turn_wait, thrust_wait);
}
static void
flak_preprocess (ELEMENT *ElementPtr)
{
if (ElementPtr->turn_wait > 0)
--ElementPtr->turn_wait;
else
{
SIZE angle, delta_speed;
angle = GetVelocityTravelAngle (&ElementPtr->velocity);
delta_speed = WORLD_TO_VELOCITY (MISSILE_DECELERATION);
DeltaVelocityComponents (&ElementPtr->velocity,
(SIZE)COSINE (angle, -delta_speed),
(SIZE)SINE (angle, -delta_speed));
ElementPtr->turn_wait = MISSILE_DECEL_WAIT;
ElementPtr->state_flags |= CHANGING;
}
}
static void
blaster_preprocess (ELEMENT *ElementPtr)
{
BYTE wait;
switch (ElementPtr->mass_points)
{
case BLASTER_DAMAGE * 1:
if (GetFrameIndex (ElementPtr->current.image.frame) < 8)
{
ElementPtr->next.image.frame =
IncFrameIndex (ElementPtr->current.image.frame);
ElementPtr->state_flags |= CHANGING;
}
break;
case BLASTER_DAMAGE * 3:
if (GetFrameIndex (ElementPtr->current.image.frame) < 19)
ElementPtr->next.image.frame =
IncFrameIndex (ElementPtr->current.image.frame);
else
ElementPtr->next.image.frame =
SetAbsFrameIndex (ElementPtr->current.image.frame, 16);
ElementPtr->state_flags |= CHANGING;
break;
}
if (LONIBBLE (ElementPtr->turn_wait))
--ElementPtr->turn_wait;
else if ((wait = HINIBBLE (ElementPtr->turn_wait)))
{
COUNT facing;
facing = NORMALIZE_FACING (ANGLE_TO_FACING (
GetVelocityTravelAngle (&ElementPtr->velocity)));
if (TrackShip (ElementPtr, &facing) > 0)
SetVelocityVector (&ElementPtr->velocity, BLASTER_SPEED, facing);
ElementPtr->turn_wait = MAKE_BYTE (wait, wait);
}
}
static void
thraddash_intelligence (ELEMENT *ShipPtr, EVALUATE_DESC *ObjectsOfConcern, COUNT ConcernCounter)
{
STARSHIP *StarShipPtr;
EVALUATE_DESC *lpEvalDesc;
lpEvalDesc = &ObjectsOfConcern[ENEMY_SHIP_INDEX];
if (lpEvalDesc->ObjectPtr)
{
#define STATIONARY_SPEED WORLD_TO_VELOCITY (DISPLAY_TO_WORLD (4))
SIZE dx, dy;
GetCurrentVelocityComponents (
&lpEvalDesc->ObjectPtr->velocity, &dx, &dy
);
if (lpEvalDesc->which_turn > 8
|| (long)dx * dx + (long)dy * dy <=
(long)STATIONARY_SPEED * STATIONARY_SPEED)
lpEvalDesc->MoveState = PURSUE;
else
lpEvalDesc->MoveState = ENTICE;
}
ship_intelligence (ShipPtr, ObjectsOfConcern, ConcernCounter);
GetElementStarShip (ShipPtr, &StarShipPtr);
if (StarShipPtr->special_counter == 0)
{
StarShipPtr->ship_input_state &= ~SPECIAL;
if (ObjectsOfConcern[ENEMY_WEAPON_INDEX].ObjectPtr
&& ObjectsOfConcern[ENEMY_WEAPON_INDEX].MoveState == ENTICE)
{
if ((StarShipPtr->ship_input_state & THRUST)
|| (ShipPtr->turn_wait == 0
&& !(StarShipPtr->ship_input_state & (LEFT | RIGHT)))
|| NORMALIZE_FACING (ANGLE_TO_FACING (
GetVelocityTravelAngle (
&ObjectsOfConcern[ENEMY_WEAPON_INDEX].ObjectPtr->velocity
) + HALF_CIRCLE + OCTANT)
- StarShipPtr->ShipFacing) > ANGLE_TO_FACING (QUADRANT))
StarShipPtr->ship_input_state |= SPECIAL;
}
else if (lpEvalDesc->ObjectPtr)
{
if (lpEvalDesc->MoveState == PURSUE)
{
if (StarShipPtr->RaceDescPtr->ship_info.energy_level >= WEAPON_ENERGY_COST
+ SPECIAL_ENERGY_COST
&& ShipPtr->turn_wait == 0
&& !(StarShipPtr->ship_input_state & (LEFT | RIGHT))
&& (!(StarShipPtr->cur_status_flags & SPECIAL)
|| !(StarShipPtr->cur_status_flags
& (SHIP_AT_MAX_SPEED | SHIP_BEYOND_MAX_SPEED))))
StarShipPtr->ship_input_state |= SPECIAL;
}
else if (lpEvalDesc->MoveState == ENTICE)
{
COUNT direction_angle;
SIZE delta_x, delta_y;
delta_x = lpEvalDesc->ObjectPtr->next.location.x
- ShipPtr->next.location.x;
delta_y = lpEvalDesc->ObjectPtr->next.location.y
- ShipPtr->next.location.y;
direction_angle = ARCTAN (delta_x, delta_y);
if ((lpEvalDesc->which_turn > 24
&& !(StarShipPtr->ship_input_state & (LEFT | RIGHT)))
|| (lpEvalDesc->which_turn <= 16
&& NORMALIZE_ANGLE (direction_angle
- (FACING_TO_ANGLE (StarShipPtr->ShipFacing) + HALF_CIRCLE)
+ QUADRANT) <= HALF_CIRCLE
&& (lpEvalDesc->which_turn < 12
|| NORMALIZE_ANGLE (direction_angle
- (GetVelocityTravelAngle (
&lpEvalDesc->ObjectPtr->velocity
) + HALF_CIRCLE)
+ (OCTANT + 2)) <= ((OCTANT + 2) << 1))))
StarShipPtr->ship_input_state |= SPECIAL;
}
}
if ((StarShipPtr->ship_input_state & SPECIAL)
&& StarShipPtr->RaceDescPtr->ship_info.energy_level >=
SPECIAL_ENERGY_COST)
StarShipPtr->ship_input_state &= ~THRUST;
}
}
static void
mmrnmhrm_intelligence (ELEMENT *ShipPtr, EVALUATE_DESC *ObjectsOfConcern,
COUNT ConcernCounter)
{
BOOLEAN CanTransform;
EVALUATE_DESC *lpEvalDesc;
STARSHIP *StarShipPtr;
STARSHIP *EnemyStarShipPtr;
GetElementStarShip (ShipPtr, &StarShipPtr);
CanTransform = (BOOLEAN)(StarShipPtr->special_counter == 0
&& StarShipPtr->RaceDescPtr->ship_info.energy_level >=
StarShipPtr->RaceDescPtr->characteristics.special_energy_cost);
lpEvalDesc = &ObjectsOfConcern[ENEMY_SHIP_INDEX];
if (lpEvalDesc->ObjectPtr)
{
GetElementStarShip (lpEvalDesc->ObjectPtr, &EnemyStarShipPtr);
}
ship_intelligence (ShipPtr, ObjectsOfConcern, ConcernCounter);
StarShipPtr->ship_input_state &= ~SPECIAL;
if (CanTransform
&& lpEvalDesc->ObjectPtr
&& !(StarShipPtr->ship_input_state & WEAPON))
{
SIZE delta_x, delta_y;
COUNT travel_angle, direction_angle;
GetCurrentVelocityComponents (&lpEvalDesc->ObjectPtr->velocity,
&delta_x, &delta_y);
if (delta_x == 0 && delta_y == 0)
direction_angle = travel_angle = 0;
else
{
delta_x = lpEvalDesc->ObjectPtr->current.location.x
- ShipPtr->current.location.x;
delta_y = lpEvalDesc->ObjectPtr->current.location.y
- ShipPtr->current.location.y;
direction_angle = ARCTAN (-delta_x, -delta_y);
travel_angle = GetVelocityTravelAngle (
&lpEvalDesc->ObjectPtr->velocity
);
}
if (ShipPtr->next.image.farray == StarShipPtr->RaceDescPtr->ship_data.ship)
{
if (lpEvalDesc->which_turn > 8)
{
if (MANEUVERABILITY (&EnemyStarShipPtr->RaceDescPtr->cyborg_control) <= SLOW_SHIP
|| NORMALIZE_ANGLE (
direction_angle - travel_angle + QUADRANT
) > HALF_CIRCLE)
StarShipPtr->ship_input_state |= SPECIAL;
}
}
else
{
SIZE ship_delta_x, ship_delta_y;
GetCurrentVelocityComponents (&ShipPtr->velocity,
&ship_delta_x, &ship_delta_y);
delta_x -= ship_delta_x;
delta_y -= ship_delta_y;
travel_angle = ARCTAN (delta_x, delta_y);
if (lpEvalDesc->which_turn < 16)
{
if (lpEvalDesc->which_turn <= 8
|| NORMALIZE_ANGLE (
direction_angle - travel_angle + OCTANT
) <= QUADRANT)
StarShipPtr->ship_input_state |= SPECIAL;
}
else if (lpEvalDesc->which_turn > 32
&& NORMALIZE_ANGLE (
direction_angle - travel_angle + QUADRANT
) > HALF_CIRCLE)
StarShipPtr->ship_input_state |= SPECIAL;
}
}
if (ShipPtr->current.image.farray == StarShipPtr->RaceDescPtr->ship_data.special)
{
if (!(StarShipPtr->ship_input_state & SPECIAL)
&& lpEvalDesc->ObjectPtr)
StarShipPtr->ship_input_state |= WEAPON;
else
StarShipPtr->ship_input_state &= ~WEAPON;
}
}
static COUNT
initialize_flak (ELEMENT *ShipPtr, HELEMENT MissileArray[])
{
COUNT i;
STARSHIP *StarShipPtr;
MISSILE_BLOCK MissileBlock;
GetElementStarShip (ShipPtr, &StarShipPtr);
MissileBlock.cx = ShipPtr->next.location.x;
MissileBlock.cy = ShipPtr->next.location.y;
MissileBlock.farray = StarShipPtr->RaceDescPtr->ship_data.weapon;
MissileBlock.face = MissileBlock.index = StarShipPtr->ShipFacing;
MissileBlock.sender = ShipPtr->playerNr;
MissileBlock.flags = IGNORE_SIMILAR;
MissileBlock.pixoffs = SPATHI_FORWARD_OFFSET;
MissileBlock.speed = (MISSILE_SPEED << RESOLUTION_FACTOR);
MissileBlock.hit_points = MISSILE_HITS;
MissileBlock.damage = MISSILE_DAMAGE;
MissileBlock.life = MISSILE_LIFE;
MissileBlock.preprocess_func = flak_preprocess;
MissileBlock.blast_offs = MISSILE_OFFSET;
for(i = 0; i < 3; ++i)
{
if (i == 0)
{
MissileBlock.cx = ShipPtr->next.location.x;
MissileBlock.cy = ShipPtr->next.location.y;
}
else if (i == 1)
{
MissileBlock.cx = ShipPtr->next.location.x
+ COSINE(FACING_TO_ANGLE(StarShipPtr->ShipFacing + 4), 12);
MissileBlock.cy = ShipPtr->next.location.y
+ SINE(FACING_TO_ANGLE(StarShipPtr->ShipFacing + 4), 12);
}
else if (i == 2)
{
MissileBlock.cx = ShipPtr->next.location.x
+ COSINE(FACING_TO_ANGLE(StarShipPtr->ShipFacing + 4), -12);
MissileBlock.cy = ShipPtr->next.location.y
+ SINE(FACING_TO_ANGLE(StarShipPtr->ShipFacing + 4), -12);
}
if ((MissileArray[i] = initialize_missile (&MissileBlock)))
{
SIZE dx, dy, angle, speed;
ELEMENT *MissilePtr;
LockElement (MissileArray[i], &MissilePtr);
if (i > 0)
{
angle = GetVelocityTravelAngle (&MissilePtr->velocity);
GetCurrentVelocityComponents(&MissilePtr->velocity, &dx, &dy);
speed = square_root (dx*dx + dy*dy);
if (i == 1)
angle += 1;
else if (i == 2)
angle -= 1;
SetVelocityComponents(&MissilePtr->velocity, COSINE(angle, speed), SINE(angle, speed));
}
GetCurrentVelocityComponents (&ShipPtr->velocity, &dx, &dy);
// Add the Eluder's velocity to its projectiles.
DeltaVelocityComponents (&MissilePtr->velocity, dx, dy);
MissilePtr->current.location.x -= VELOCITY_TO_WORLD (dx);
MissilePtr->current.location.y -= VELOCITY_TO_WORLD (dy);
MissilePtr->turn_wait = 1;
UnlockElement (MissileArray[i]);
}
}
return (3);
}
void
AbandonShip (ELEMENT *ShipPtr, ELEMENT *TargetPtr,
COUNT crew_loss)
{
SIZE dx, dy;
COUNT direction;
RECT r;
STARSHIP *StarShipPtr;
HELEMENT hCrew;
INTERSECT_CONTROL ShipIntersect;
GetElementStarShip (ShipPtr, &StarShipPtr);
if (StarShipPtr->RaceDescPtr->ship_info.ship_flags & CREW_IMMUNE)
return;
ShipIntersect = ShipPtr->IntersectControl;
GetFrameRect (ShipIntersect.IntersectStamp.frame, &r);
if ((direction = GetVelocityTravelAngle (
&ShipPtr->velocity)) == FULL_CIRCLE)
dx = dy = 0;
else
{
#define MORE_THAN_ENOUGH 100
direction += HALF_CIRCLE;
dx = COSINE (direction, MORE_THAN_ENOUGH);
dy = SINE (direction, MORE_THAN_ENOUGH);
}
while (crew_loss-- && (hCrew = AllocElement ()))
{
#define CREW_LIFE 300
ELEMENT *CrewPtr;
DeltaCrew (ShipPtr, -1);
PutElement (hCrew);
LockElement (hCrew, &CrewPtr);
CrewPtr->playerNr = NEUTRAL_PLAYER_NUM;
CrewPtr->hit_points = 1;
CrewPtr->state_flags = APPEARING | FINITE_LIFE | CREW_OBJECT;
CrewPtr->life_span = CREW_LIFE;
SetPrimType (&DisplayArray[CrewPtr->PrimIndex], POINT_PRIM);
SetPrimColor (&DisplayArray[CrewPtr->PrimIndex],
BUILD_COLOR (MAKE_RGB15 (0x00, 0x14, 0x00), 0x02));
CrewPtr->current.image.frame = DecFrameIndex (stars_in_space);
CrewPtr->current.image.farray = &stars_in_space;
CrewPtr->preprocess_func = crew_preprocess;
CrewPtr->collision_func = crew_collision;
SetElementStarShip (CrewPtr, StarShipPtr);
GetElementStarShip (TargetPtr, &StarShipPtr);
CrewPtr->hTarget = StarShipPtr->hShip;
{
SIZE w, h;
INTERSECT_CONTROL CrewIntersect;
ShipIntersect.IntersectStamp.origin =
ShipPtr->IntersectControl.EndPoint;
w = (SIZE)((COUNT)TFB_Random () % r.extent.width);
h = (SIZE)((COUNT)TFB_Random () % r.extent.height);
CrewIntersect.EndPoint = ShipIntersect.EndPoint;
CrewIntersect.IntersectStamp.frame = DecFrameIndex (stars_in_space);
if (dx == 0 && dy == 0)
{
CrewIntersect.EndPoint.x += w - (r.extent.width >> 1);
CrewIntersect.EndPoint.y += h - (r.extent.height >> 1);
CrewIntersect.IntersectStamp.origin =
TargetPtr->IntersectControl.EndPoint;
}
else
{
if (dx == 0)
CrewIntersect.EndPoint.x += w - (r.extent.width >> 1);
else if (dx > 0)
CrewIntersect.EndPoint.x += w;
else
CrewIntersect.EndPoint.x -= w;
if (dy == 0)
CrewIntersect.EndPoint.y += h - (r.extent.height >> 1);
else if (dy > 0)
