static void
spawn_rubble (ELEMENT *AsteroidElementPtr)
{
HELEMENT hRubbleElement;
hRubbleElement = AllocElement ();
if (hRubbleElement)
{
ELEMENT *RubbleElementPtr;
PutElement (hRubbleElement);
LockElement (hRubbleElement, &RubbleElementPtr);
RubbleElementPtr->playerNr = AsteroidElementPtr->playerNr;
RubbleElementPtr->state_flags = APPEARING | FINITE_LIFE | NONSOLID;
RubbleElementPtr->life_span = 5;
RubbleElementPtr->turn_wait = RubbleElementPtr->next_turn = 0;
SetPrimType (&DisplayArray[RubbleElementPtr->PrimIndex], STAMP_PRIM);
RubbleElementPtr->current.image.farray = asteroid;
RubbleElementPtr->current.image.frame =
SetAbsFrameIndex (asteroid[0], ANGLE_TO_FACING (FULL_CIRCLE));
RubbleElementPtr->current.location = AsteroidElementPtr->current.location;
RubbleElementPtr->preprocess_func = animation_preprocess;
RubbleElementPtr->death_func = spawn_asteroid;
UnlockElement (hRubbleElement);
}
}
static void
melnorme_postprocess (ELEMENT *ElementPtr)
{
STARSHIP *StarShipPtr;
GetElementStarShip (ElementPtr, &StarShipPtr);
if ((StarShipPtr->cur_status_flags & SPECIAL)
&& StarShipPtr->special_counter == 0
&& DeltaEnergy (ElementPtr, -SPECIAL_ENERGY_COST))
{
HELEMENT Confusion;
initialize_confusion (ElementPtr, &Confusion);
if (Confusion)
{
ELEMENT *CMissilePtr;
LockElement (Confusion, &CMissilePtr);
ProcessSound (SetAbsSoundIndex (
StarShipPtr->RaceDescPtr->ship_data.ship_sounds, 1), CMissilePtr);
UnlockElement (Confusion);
PutElement (Confusion);
StarShipPtr->special_counter =
StarShipPtr->RaceDescPtr->characteristics.special_wait;
}
}
}
static void
spawn_doggy (ELEMENT *ElementPtr)
{
HELEMENT hDoggyElement;
if ((hDoggyElement = AllocElement ()) != 0)
{
COUNT angle;
ELEMENT *DoggyElementPtr;
STARSHIP *StarShipPtr;
ElementPtr->state_flags |= DEFY_PHYSICS;
PutElement (hDoggyElement);
LockElement (hDoggyElement, &DoggyElementPtr);
DoggyElementPtr->hit_points = DOGGY_HITS;
DoggyElementPtr->mass_points = DOGGY_MASS;
DoggyElementPtr->thrust_wait = 0;
DoggyElementPtr->playerNr = ElementPtr->playerNr;
DoggyElementPtr->state_flags = APPEARING;
DoggyElementPtr->life_span = NORMAL_LIFE;
SetPrimType (&(GLOBAL (DisplayArray))[DoggyElementPtr->PrimIndex],
STAMP_PRIM);
{
DoggyElementPtr->preprocess_func = doggy_preprocess;
DoggyElementPtr->postprocess_func = NULL;
DoggyElementPtr->collision_func = doggy_collision;
DoggyElementPtr->death_func = doggy_death;
}
GetElementStarShip (ElementPtr, &StarShipPtr);
angle = FACING_TO_ANGLE (StarShipPtr->ShipFacing) + HALF_CIRCLE;
DoggyElementPtr->current.location.x = ElementPtr->next.location.x
+ COSINE (angle, DISPLAY_TO_WORLD (CHENJESU_OFFSET + DOGGY_OFFSET));
DoggyElementPtr->current.location.y = ElementPtr->next.location.y
+ SINE (angle, DISPLAY_TO_WORLD (CHENJESU_OFFSET + DOGGY_OFFSET));
DoggyElementPtr->current.image.farray = StarShipPtr->RaceDescPtr->ship_data.special;
DoggyElementPtr->current.image.frame = StarShipPtr->RaceDescPtr->ship_data.special[0];
SetVelocityVector (&DoggyElementPtr->velocity,
DOGGY_SPEED, NORMALIZE_FACING (ANGLE_TO_FACING (angle)));
SetElementStarShip (DoggyElementPtr, StarShipPtr);
ProcessSound (SetAbsSoundIndex (
/* RELEASE_DOGGY */
StarShipPtr->RaceDescPtr->ship_data.ship_sounds, 4), DoggyElementPtr);
UnlockElement (hDoggyElement);
}
}
static void
crystal_postprocess (ELEMENT *ElementPtr)
{
#define FRAGMENT_HITS 1
#define FRAGMENT_DAMAGE 2
#define FRAGMENT_OFFSET 2
#define NUM_FRAGMENTS 8
STARSHIP *StarShipPtr;
MISSILE_BLOCK MissileBlock;
GetElementStarShip (ElementPtr, &StarShipPtr);
MissileBlock.cx = ElementPtr->next.location.x;
MissileBlock.cy = ElementPtr->next.location.y;
MissileBlock.farray = StarShipPtr->RaceDescPtr->ship_data.weapon;
MissileBlock.index = 1;
MissileBlock.sender = ElementPtr->playerNr;
MissileBlock.flags = IGNORE_SIMILAR;
MissileBlock.pixoffs = 0;
MissileBlock.speed = FRAGMENT_SPEED;
MissileBlock.hit_points = FRAGMENT_HITS;
MissileBlock.damage = FRAGMENT_DAMAGE;
MissileBlock.life = FRAGMENT_LIFE;
MissileBlock.preprocess_func = NULL;
MissileBlock.blast_offs = FRAGMENT_OFFSET;
for (MissileBlock.face = 0;
MissileBlock.face < ANGLE_TO_FACING (FULL_CIRCLE);
MissileBlock.face +=
(ANGLE_TO_FACING (FULL_CIRCLE) / NUM_FRAGMENTS))
{
HELEMENT hFragment;
hFragment = initialize_missile (&MissileBlock);
if (hFragment)
{
ELEMENT *FragPtr;
LockElement (hFragment, &FragPtr);
SetElementStarShip (FragPtr, StarShipPtr);
UnlockElement (hFragment);
PutElement (hFragment);
}
}
ProcessSound (SetAbsSoundIndex (
/* CRYSTAL_FRAGMENTS */
StarShipPtr->RaceDescPtr->ship_data.ship_sounds, 1), ElementPtr);
}
static void
spawn_butt_missile (ELEMENT *ShipPtr)
{
#define SPATHI_REAR_OFFSET 20
#define DISCRIMINATOR_LIFE 30
#define DISCRIMINATOR_HITS 1
#define DISCRIMINATOR_DAMAGE 2
#define DISCRIMINATOR_OFFSET 4
HELEMENT ButtMissile;
STARSHIP *StarShipPtr;
MISSILE_BLOCK ButtMissileBlock;
GetElementStarShip (ShipPtr, &StarShipPtr);
ButtMissileBlock.cx = ShipPtr->next.location.x;
ButtMissileBlock.cy = ShipPtr->next.location.y;
ButtMissileBlock.farray = StarShipPtr->RaceDescPtr->ship_data.special;
ButtMissileBlock.face = ButtMissileBlock.index =
NORMALIZE_FACING (StarShipPtr->ShipFacing
+ ANGLE_TO_FACING (HALF_CIRCLE));
ButtMissileBlock.sender = ShipPtr->playerNr;
ButtMissileBlock.flags = 0;
ButtMissileBlock.pixoffs = SPATHI_REAR_OFFSET;
ButtMissileBlock.speed = DISCRIMINATOR_SPEED;
ButtMissileBlock.hit_points = DISCRIMINATOR_HITS;
ButtMissileBlock.damage = DISCRIMINATOR_DAMAGE;
ButtMissileBlock.life = DISCRIMINATOR_LIFE;
ButtMissileBlock.preprocess_func = butt_missile_preprocess;
ButtMissileBlock.blast_offs = DISCRIMINATOR_OFFSET;
ButtMissile = initialize_missile (&ButtMissileBlock);
if (ButtMissile)
{
ELEMENT *ButtPtr;
LockElement (ButtMissile, &ButtPtr);
ButtPtr->turn_wait = TRACK_WAIT;
SetElementStarShip (ButtPtr, StarShipPtr);
ProcessSound (SetAbsSoundIndex (
/* LAUNCH_BUTT_MISSILE */
StarShipPtr->RaceDescPtr->ship_data.ship_sounds, 1), ButtPtr);
UnlockElement (ButtMissile);
PutElement (ButtMissile);
}
}
void
spawn_planet (void)
{
HELEMENT hPlanetElement;
hPlanetElement = AllocElement ();
if (hPlanetElement)
{
ELEMENT *PlanetElementPtr;
extern FRAME planet[];
LockElement (hPlanetElement, &PlanetElementPtr);
PlanetElementPtr->playerNr = NEUTRAL_PLAYER_NUM;
PlanetElementPtr->hit_points = 200;
PlanetElementPtr->state_flags = APPEARING;
PlanetElementPtr->life_span = NORMAL_LIFE + 1;
SetPrimType (&DisplayArray[PlanetElementPtr->PrimIndex], STAMP_PRIM);
PlanetElementPtr->current.image.farray = planet;
PlanetElementPtr->current.image.frame =
PlanetElementPtr->current.image.farray[0];
PlanetElementPtr->collision_func = collision;
PlanetElementPtr->postprocess_func =
(void (*) (struct element *ElementPtr))CalculateGravity;
ZeroVelocityComponents (&PlanetElementPtr->velocity);
do
{
PlanetElementPtr->current.location.x =
WRAP_X (DISPLAY_ALIGN_X (TFB_Random ()));
PlanetElementPtr->current.location.y =
WRAP_Y (DISPLAY_ALIGN_Y (TFB_Random ()));
} while (CalculateGravity (PlanetElementPtr)
|| Overlap (PlanetElementPtr));
PlanetElementPtr->mass_points = PlanetElementPtr->hit_points;
PlanetElementPtr->triggers_teleport_safety = TRUE;
UnlockElement (hPlanetElement);
PutElement (hPlanetElement);
}
}
// When gas expires, display animation of the gas dissolving.
static void
gas_death (ELEMENT *ElementPtr)
{
STARSHIP *StarShipPtr;
GetElementStarShip (ElementPtr, &StarShipPtr);
if (StarShipPtr->hShip)
{
HELEMENT hDissolve;
ELEMENT *ShipPtr;
LockElement (StarShipPtr->hShip, &ShipPtr);
if ((hDissolve = AllocElement ()))
{
ELEMENT *DissolvePtr;
LockElement (hDissolve, &DissolvePtr);
DissolvePtr->playerNr = ElementPtr->playerNr;
DissolvePtr->state_flags = FINITE_LIFE | NONSOLID | IGNORE_SIMILAR | APPEARING;
DissolvePtr->turn_wait = 0;
DissolvePtr->life_span = NUM_DISSOLVE_FRAMES;
DissolvePtr->current.location.x = ElementPtr->current.location.x;
DissolvePtr->current.location.y = ElementPtr->current.location.y;
DissolvePtr->current.image.farray = StarShipPtr->RaceDescPtr->ship_data.special;
DissolvePtr->current.image.frame = SetAbsFrameIndex (ElementPtr->current.image.frame, LAST_SHOCKWAVE_INDEX);
DissolvePtr->preprocess_func = gas_death_animation;
SetElementStarShip (DissolvePtr, StarShipPtr);
SetPrimType (&(GLOBAL (DisplayArray))[DissolvePtr->PrimIndex], STAMP_PRIM);
UnlockElement (hDissolve);
PutElement (hDissolve);
}
UnlockElement (StarShipPtr->hShip);
}
}
static void
spawn_crew (ELEMENT *ElementPtr)
{
if (ElementPtr->state_flags & PLAYER_SHIP)
{
HELEMENT hCrew;
hCrew = AllocElement ();
if (hCrew != 0)
{
ELEMENT *CrewPtr;
LockElement (hCrew, &CrewPtr);
CrewPtr->next.location = ElementPtr->next.location;
CrewPtr->playerNr = ElementPtr->playerNr;
CrewPtr->state_flags = APPEARING | NONSOLID | FINITE_LIFE;
CrewPtr->life_span = 0;
CrewPtr->death_func = spawn_crew;
CrewPtr->pParent = ElementPtr->pParent;
CrewPtr->hTarget = 0;
UnlockElement (hCrew);
PutElement (hCrew);
}
}
else
{
HELEMENT hElement, hNextElement;
for (hElement = GetHeadElement ();
hElement != 0; hElement = hNextElement)
{
ELEMENT *ObjPtr;
STARSHIP *EnemyStarShipPtr;
LockElement (hElement, &ObjPtr);
GetElementStarShip (ObjPtr, &EnemyStarShipPtr);
hNextElement = GetSuccElement (ObjPtr);
if ((ObjPtr->state_flags & PLAYER_SHIP)
&& !elementsOfSamePlayer (ObjPtr, ElementPtr)
&& ObjPtr->crew_level > 1)
{
SIZE dx, dy;
DWORD d_squared;
dx = ObjPtr->next.location.x - ElementPtr->next.location.x;
if (dx < 0)
dx = -dx;
dy = ObjPtr->next.location.y - ElementPtr->next.location.y;
if (dy < 0)
dy = -dy;
dx = WORLD_TO_DISPLAY (dx);
dy = WORLD_TO_DISPLAY (dy);
if (dx <= ABANDONER_RANGE && dy <= ABANDONER_RANGE
&& (d_squared = (DWORD)((UWORD)dx * (UWORD)dx)
+ (DWORD)((UWORD)dy * (UWORD)dy)) <=
(DWORD)((UWORD)ABANDONER_RANGE * (UWORD)ABANDONER_RANGE))
{
COUNT crew_loss;
if (EnemyStarShipPtr && EnemyStarShipPtr->SpeciesID == SYREEN_ID)
{
crew_loss = ((LIMITED_MAX_ABANDONERS
* (ABANDONER_RANGE - square_root (d_squared)))
/ ABANDONER_RANGE) + 1;
}
else
{
crew_loss = ((MAX_ABANDONERS
* (ABANDONER_RANGE - square_root (d_squared)))
/ ABANDONER_RANGE) + 1;
}
if (crew_loss >= ObjPtr->crew_level)
crew_loss = ObjPtr->crew_level - 1;
AbandonShip (ObjPtr, ElementPtr, crew_loss);
}
}
UnlockElement (hElement);
}
}
}
static void
self_destruct (PELEMENT ElementPtr)
{
STARSHIPPTR StarShipPtr;
GetElementStarShip (ElementPtr, &StarShipPtr);
if (ElementPtr->state_flags & PLAYER_SHIP)
{
HELEMENT hDestruct;
hDestruct = AllocElement ();
if (hDestruct)
{
ELEMENTPTR DestructPtr;
LockElement (hDestruct, &DestructPtr);
DestructPtr->state_flags = APPEARING | NONSOLID | FINITE_LIFE |
(ElementPtr->state_flags & (GOOD_GUY | BAD_GUY));
DestructPtr->next.location = ElementPtr->next.location;
DestructPtr->life_span = 0;
DestructPtr->pParent = ElementPtr->pParent;
DestructPtr->hTarget = 0;
DestructPtr->death_func = self_destruct;
UnlockElement (hDestruct);
PutElement (hDestruct);
}
ElementPtr->state_flags |= NONSOLID;
ElementPtr->life_span = 0;
ElementPtr->preprocess_func = destruct_preprocess;
}
else
{
HELEMENT hElement, hNextElement;
for (hElement = GetHeadElement ();
hElement != 0; hElement = hNextElement)
{
ELEMENTPTR ObjPtr;
LockElement (hElement, &ObjPtr);
hNextElement = GetSuccElement (ObjPtr);
if (CollidingElement (ObjPtr) || ORZ_MARINE (ObjPtr))
{
#define DESTRUCT_RANGE 180
SIZE delta_x, delta_y;
DWORD dist;
if ((delta_x = ObjPtr->next.location.x
- ElementPtr->next.location.x) < 0)
delta_x = -delta_x;
if ((delta_y = ObjPtr->next.location.y
- ElementPtr->next.location.y) < 0)
delta_y = -delta_y;
delta_x = WORLD_TO_DISPLAY (delta_x);
delta_y = WORLD_TO_DISPLAY (delta_y);
if (delta_x <= DESTRUCT_RANGE && delta_y <= DESTRUCT_RANGE
&& (dist = (DWORD)(delta_x * delta_x)
+ (DWORD)(delta_y * delta_y)) <=
(DWORD)(DESTRUCT_RANGE * DESTRUCT_RANGE))
{
#define MAX_DESTRUCTION (DESTRUCT_RANGE / 10)
SIZE destruction;
destruction = ((MAX_DESTRUCTION
* (DESTRUCT_RANGE - square_root (dist)))
/ DESTRUCT_RANGE) + 1;
if (ObjPtr->state_flags & PLAYER_SHIP)
{
if (!DeltaCrew (ObjPtr, -destruction))
ObjPtr->life_span = 0;
}
else if (!GRAVITY_MASS (ObjPtr->mass_points))
{
if ((BYTE)destruction < ObjPtr->hit_points)
ObjPtr->hit_points -= (BYTE)destruction;
else
{
ObjPtr->hit_points = 0;
ObjPtr->life_span = 0;
}
}
}
}
UnlockElement (hElement);
}
}
}
static void
destruct_preprocess (PELEMENT ElementPtr)
{
#define DESTRUCT_SWITCH ((NUM_EXPLOSION_FRAMES * 3) - 3)
PPRIMITIVE lpPrim;
lpPrim = &(GLOBAL (DisplayArray))[ElementPtr->PrimIndex];
ElementPtr->state_flags |= CHANGING;
if (ElementPtr->life_span > DESTRUCT_SWITCH)
{
SetPrimType (lpPrim, STAMPFILL_PRIM);
if (ElementPtr->life_span == DESTRUCT_SWITCH + 2)
SetPrimColor (lpPrim, BUILD_COLOR (MAKE_RGB15 (0x1F, 0x1F, 0x0A), 0x0E));
else
SetPrimColor (lpPrim, BUILD_COLOR (MAKE_RGB15 (0x1F, 0x1F, 0x1F), 0x0F));
}
else if (ElementPtr->life_span < DESTRUCT_SWITCH)
{
ElementPtr->next.image.frame =
IncFrameIndex (ElementPtr->current.image.frame);
if (GetPrimColor (lpPrim) == BUILD_COLOR (MAKE_RGB15 (0x1F, 0x1F, 0x1F), 0x0F))
SetPrimColor (lpPrim, BUILD_COLOR (MAKE_RGB15 (0x1F, 0x1F, 0x0A), 0x0E));
else if (GetPrimColor (lpPrim) == BUILD_COLOR (MAKE_RGB15 (0x1F, 0x1F, 0x0A), 0x0E))
SetPrimColor (lpPrim, BUILD_COLOR (MAKE_RGB15 (0x1F, 0x0A, 0x0A), 0x0C));
else if (GetPrimColor (lpPrim) == BUILD_COLOR (MAKE_RGB15 (0x1F, 0x0A, 0x0A), 0x0C))
SetPrimColor (lpPrim, BUILD_COLOR (MAKE_RGB15 (0x14, 0x0A, 0x00), 0x06));
else if (GetPrimColor (lpPrim) == BUILD_COLOR (MAKE_RGB15 (0x14, 0x0A, 0x00), 0x06))
SetPrimColor (lpPrim, BUILD_COLOR (MAKE_RGB15 (0x14, 0x00, 0x00), 0x04));
}
else
{
HELEMENT hDestruct;
SetPrimType (lpPrim, NO_PRIM);
ElementPtr->preprocess_func = NULL_PTR;
hDestruct = AllocElement ();
if (hDestruct)
{
ELEMENTPTR DestructPtr;
STARSHIPPTR StarShipPtr;
GetElementStarShip (ElementPtr, &StarShipPtr);
PutElement (hDestruct);
LockElement (hDestruct, &DestructPtr);
SetElementStarShip (DestructPtr, StarShipPtr);
DestructPtr->hit_points = DestructPtr->mass_points = 0;
DestructPtr->state_flags = APPEARING | FINITE_LIFE | NONSOLID;
DestructPtr->life_span = (NUM_EXPLOSION_FRAMES - 3) - 1;
SetPrimType (
&(GLOBAL (DisplayArray))[DestructPtr->PrimIndex],
STAMPFILL_PRIM
);
SetPrimColor (
&(GLOBAL (DisplayArray))[DestructPtr->PrimIndex],
BUILD_COLOR (MAKE_RGB15 (0x1F, 0x1F, 0x1F), 0x0F)
);
DestructPtr->current.image.farray = StarShipPtr->RaceDescPtr->ship_data.special;
DestructPtr->current.image.frame = StarShipPtr->RaceDescPtr->ship_data.special[0];
DestructPtr->current.location = ElementPtr->current.location;
{
DestructPtr->preprocess_func = destruct_preprocess;
}
DestructPtr->postprocess_func =
DestructPtr->death_func = NULL_PTR;
ZeroVelocityComponents (&DestructPtr->velocity);
UnlockElement (hDestruct);
}
}
}
static void
initialize_diagonal_flame (ELEMENT *ElementPtr)
{
COUNT i;
STARSHIP *StarShipPtr;
MISSILE_BLOCK MissileBlock;
GetElementStarShip (ElementPtr, &StarShipPtr);
MissileBlock.farray = StarShipPtr->RaceDescPtr->ship_data.weapon;
MissileBlock.index = 0;
MissileBlock.sender = ElementPtr->playerNr;
MissileBlock.flags = IGNORE_SIMILAR;
MissileBlock.pixoffs = ILWRATH_OFFSET;
MissileBlock.speed = MISSILE_SPEED;
MissileBlock.hit_points = MISSILE_HITS;
MissileBlock.damage = MISSILE_DAMAGE;
MissileBlock.life = MISSILE_LIFE;
MissileBlock.preprocess_func = flame_preprocess;
MissileBlock.blast_offs = MISSILE_OFFSET;
for(i = 0; i < 2; ++i)
{
HELEMENT hFlame;
if (i == 0)
{
MissileBlock.cx = ElementPtr->next.location.x
+ COSINE(FACING_TO_ANGLE(StarShipPtr->ShipFacing + 4), -32);
MissileBlock.cy = ElementPtr->next.location.y
+ SINE(FACING_TO_ANGLE(StarShipPtr->ShipFacing + 4), -32);
MissileBlock.face = NORMALIZE_FACING (StarShipPtr->ShipFacing + 2);
}
else
{
MissileBlock.cx = ElementPtr->next.location.x
+ COSINE(FACING_TO_ANGLE(StarShipPtr->ShipFacing + 4), 32);
MissileBlock.cy = ElementPtr->next.location.y
+ SINE(FACING_TO_ANGLE(StarShipPtr->ShipFacing + 4), 32);
MissileBlock.face = NORMALIZE_FACING (StarShipPtr->ShipFacing - 2);
}
hFlame = initialize_missile (&MissileBlock);
if (hFlame)
{
SIZE dx, dy;
ELEMENT *FlamePtr;
LockElement (hFlame, &FlamePtr);
SetElementStarShip (FlamePtr, StarShipPtr);
FlamePtr->hTarget = 0;
GetCurrentVelocityComponents (&ElementPtr->velocity, &dx, &dy);
DeltaVelocityComponents (&FlamePtr->velocity, dx, dy);
FlamePtr->current.location.x -= VELOCITY_TO_WORLD (dx);
FlamePtr->current.location.y -= VELOCITY_TO_WORLD (dy);
FlamePtr->collision_func = flame_collision;
FlamePtr->turn_wait = 0;
UnlockElement (hFlame);
PutElement (hFlame);
}
}
}
static void
gas_preprocess (ELEMENT *ElementPtr)
{
STARSHIP *StarShipPtr;
SDWORD dx, dy;
// Baul's gas now flies forward. Slow down the gas smoothly.
GetCurrentVelocityComponentsSdword (&ElementPtr->velocity, &dx, &dy);
if (dx != 0 || dy != 0)
{
dx = (SDWORD)(dx * 9 / 10);
dy = (SDWORD)(dy * 9 / 10);
SetVelocityComponents (&ElementPtr->velocity, dx, dy);
}
GetElementStarShip (ElementPtr, &StarShipPtr);
// Move to next image frame. (Abusing thrust_wait to slow down the anim.)
if (ElementPtr->thrust_wait > 0)
--ElementPtr->thrust_wait;
else
{
// Abusing thrust_wait to slow down the anim. (Should help performance a bit.)
ElementPtr->thrust_wait = 1;
// This makes the gas animate even if the ships are not moving and the screen is stationary.
ElementPtr->state_flags |= CHANGING;
if (GetFrameIndex (ElementPtr->current.image.frame) >= LAST_DISSOLVE_INDEX
&& GetFrameIndex (ElementPtr->current.image.frame) < LAST_DISSOLVE_INDEX + NUM_EMERGE_FRAMES)
ElementPtr->next.image.frame = IncFrameIndex (ElementPtr->current.image.frame);
else if (GetFrameIndex (ElementPtr->current.image.frame) < LAST_GAS_INDEX - 1)
ElementPtr->next.image.frame = IncFrameIndex (ElementPtr->current.image.frame);
else
ElementPtr->next.image.frame = SetAbsFrameIndex (ElementPtr->current.image.frame, 0);
}
// If enemy ship dies, remove the gas (this prevents game crashing upon enemy ship dying with gas on it).
if ((!(ElementPtr->state_flags & IGNORE_VELOCITY) && ElementPtr->hTarget == 0)
|| StarShipPtr->RaceDescPtr->ship_info.crew_level == 0)
{
ElementPtr->life_span = 0;
ElementPtr->state_flags |= DISAPPEARING;
}
// When the gas has collided with enemy ship, it sticks to the ship until expires.
// (When the gas is sticking to enemy ship, the gas's IGNORE_VELOCITY flag is disabled.)
else if (!(ElementPtr->state_flags & IGNORE_VELOCITY) && !(ElementPtr->state_flags & DISAPPEARING))
{
ELEMENT *eptr;
SIZE offs_x, offs_y;
SBYTE leftOrRight, upOrDown;
COUNT angle, angleCorrect;
static BYTE alignment[NUM_SIDES]={0,0};
// eptr points to enemy ship now.
LockElement (ElementPtr->hTarget, &eptr);
// Make gas's location the same as the enemy ship's.
ElementPtr->next.location = eptr->next.location;
// Randomize the gas's location so every gas cloud doesn't stick to the same place on the enemy ship.
GetElementStarShip (eptr, &StarShipPtr);
angle = (ElementPtr->weapon_element_index) % 16;
alignment[ElementPtr->playerNr] = ElementPtr->weapon_element_index % 4;
if (alignment[ElementPtr->playerNr] == 0)
{
leftOrRight = -1;
upOrDown = 1;
angleCorrect = 0;
}
else if (alignment[ElementPtr->playerNr] == 1)
{
leftOrRight = 1;
upOrDown = -1;
angleCorrect = 0;
}
else if (alignment[ElementPtr->playerNr] == 2)
{
leftOrRight = -1;
upOrDown = 1;
angleCorrect = HALF_CIRCLE / 2;
}
else
{
leftOrRight = 1;
upOrDown = -1;
angleCorrect = HALF_CIRCLE / 2;
}
offs_x = SINE (angle - angleCorrect, (ElementPtr->weapon_element_index % 16) * (5 << RESOLUTION_FACTOR));
offs_y = COSINE (angle - angleCorrect, (ElementPtr->weapon_element_index % 16) * (5 << RESOLUTION_FACTOR));
ElementPtr->next.location.x = ElementPtr->next.location.x + leftOrRight * offs_x;
ElementPtr->next.location.y = ElementPtr->next.location.y + upOrDown * offs_y;
if (ElementPtr->turn_wait)
{
HELEMENT hEffect;
hEffect = AllocElement ();
if (hEffect)
{
// eptr points to the new gas element now.
LockElement (hEffect, &eptr);
eptr->playerNr = ElementPtr->playerNr;
eptr->state_flags = FINITE_LIFE | GASSY_SUBSTANCE | CHANGING;
eptr->life_span = 1;
eptr->thrust_wait = 1;
eptr->weapon_element_index = ElementPtr->weapon_element_index;
eptr->current = eptr->next = ElementPtr->next;
eptr->preprocess_func = gas_preprocess;
eptr->collision_func = gas_collision;
// No need to have death_func here: It carries on from the declaration in gas_collision.
// In fact, if gas_death is put here as death_func, it just messes up the graphics.
SetPrimType (&(GLOBAL (DisplayArray))[eptr->PrimIndex], STAMP_PRIM);
GetElementStarShip (ElementPtr, &StarShipPtr);
SetElementStarShip (eptr, StarShipPtr);
eptr->hTarget = ElementPtr->hTarget;
UnlockElement (hEffect);
PutElement (hEffect);
}
}
UnlockElement (ElementPtr->hTarget);
}
}
static void
phoenix_transition (ELEMENT *ElementPtr)
{
HELEMENT hShipImage;
ELEMENT *ShipImagePtr;
STARSHIP *StarShipPtr;
GetElementStarShip (ElementPtr, &StarShipPtr);
LockElement (StarShipPtr->hShip, &ShipImagePtr);
if (!(ShipImagePtr->state_flags & NONSOLID))
{
ElementPtr->preprocess_func = NULL;
}
else if ((hShipImage = AllocElement ()))
{
#define TRANSITION_SPEED DISPLAY_TO_WORLD (20)
COUNT angle;
PutElement (hShipImage);
LockElement (hShipImage, &ShipImagePtr);
ShipImagePtr->playerNr = NEUTRAL_PLAYER_NUM;
ShipImagePtr->state_flags = APPEARING | FINITE_LIFE | NONSOLID;
ShipImagePtr->life_span = TRANSITION_LIFE;
SetPrimType (&(GLOBAL (DisplayArray))[ShipImagePtr->PrimIndex],
STAMPFILL_PRIM);
SetPrimColor (
&(GLOBAL (DisplayArray))[ShipImagePtr->PrimIndex],
START_PHOENIX_COLOR);
ShipImagePtr->colorCycleIndex = 0;
ShipImagePtr->current.image = ElementPtr->current.image;
ShipImagePtr->current.location = ElementPtr->current.location;
if (!(ElementPtr->state_flags & PLAYER_SHIP))
{
angle = ElementPtr->mass_points;
ShipImagePtr->current.location.x +=
COSINE (angle, TRANSITION_SPEED);
ShipImagePtr->current.location.y +=
SINE (angle, TRANSITION_SPEED);
ElementPtr->preprocess_func = NULL;
}
else
{
angle = FACING_TO_ANGLE (StarShipPtr->ShipFacing);
ShipImagePtr->current.location.x -=
COSINE (angle, TRANSITION_SPEED)
* (ElementPtr->life_span - 1);
ShipImagePtr->current.location.y -=
SINE (angle, TRANSITION_SPEED)
* (ElementPtr->life_span - 1);
ShipImagePtr->current.location.x =
WRAP_X (ShipImagePtr->current.location.x);
ShipImagePtr->current.location.y =
WRAP_Y (ShipImagePtr->current.location.y);
}
ShipImagePtr->mass_points = (BYTE)angle;
ShipImagePtr->preprocess_func = phoenix_transition;
ShipImagePtr->death_func = spawn_phoenix_trail;
SetElementStarShip (ShipImagePtr, StarShipPtr);
UnlockElement (hShipImage);
}
UnlockElement (StarShipPtr->hShip);
}
static void
spawn_point_defense (PELEMENT ElementPtr)
{
STARSHIPPTR StarShipPtr;
GetElementStarShip (ElementPtr, &StarShipPtr);
if (ElementPtr->state_flags & PLAYER_SHIP)
{
HELEMENT hDefense;
hDefense = AllocElement ();
if (hDefense)
{
ELEMENTPTR DefensePtr;
LockElement (hDefense, &DefensePtr);
DefensePtr->state_flags = APPEARING | NONSOLID | FINITE_LIFE |
(ElementPtr->state_flags & (GOOD_GUY | BAD_GUY));
{
DefensePtr->death_func = spawn_point_defense;
}
GetElementStarShip (ElementPtr, &StarShipPtr);
SetElementStarShip (DefensePtr, StarShipPtr);
UnlockElement (hDefense);
PutElement (hDefense);
}
}
else
{
BOOLEAN PaidFor;
HELEMENT hObject, hNextObject;
ELEMENTPTR ShipPtr;
PaidFor = FALSE;
LockElement (StarShipPtr->hShip, &ShipPtr);
for (hObject = GetTailElement (); hObject; hObject = hNextObject)
{
ELEMENTPTR ObjectPtr;
LockElement (hObject, &ObjectPtr);
hNextObject = GetPredElement (ObjectPtr);
if (ObjectPtr != ShipPtr && CollidingElement (ObjectPtr) &&
!OBJECT_CLOAKED (ObjectPtr))
{
#define LASER_RANGE (UWORD)100
SIZE delta_x, delta_y;
delta_x = ObjectPtr->next.location.x -
ShipPtr->next.location.x;
delta_y = ObjectPtr->next.location.y -
ShipPtr->next.location.y;
if (delta_x < 0)
delta_x = -delta_x;
if (delta_y < 0)
delta_y = -delta_y;
delta_x = WORLD_TO_DISPLAY (delta_x);
delta_y = WORLD_TO_DISPLAY (delta_y);
if ((UWORD)delta_x <= LASER_RANGE &&
(UWORD)delta_y <= LASER_RANGE &&
(UWORD)delta_x * (UWORD)delta_x +
(UWORD)delta_y * (UWORD)delta_y <=
LASER_RANGE * LASER_RANGE)
{
HELEMENT hPointDefense;
LASER_BLOCK LaserBlock;
if (!PaidFor)
{
if (!DeltaEnergy (ShipPtr, -SPECIAL_ENERGY_COST))
break;
ProcessSound (SetAbsSoundIndex (
/* POINT_DEFENSE_LASER */
StarShipPtr->RaceDescPtr->ship_data.ship_sounds, 1));
StarShipPtr->special_counter =
StarShipPtr->RaceDescPtr->characteristics.special_wait;
PaidFor = TRUE;
}
LaserBlock.cx = ShipPtr->next.location.x;
LaserBlock.cy = ShipPtr->next.location.y;
LaserBlock.face = 0;
LaserBlock.ex = ObjectPtr->next.location.x
- ShipPtr->next.location.x;
LaserBlock.ey = ObjectPtr->next.location.y
- ShipPtr->next.location.y;
LaserBlock.sender = (ShipPtr->state_flags & (GOOD_GUY | BAD_GUY))
| IGNORE_SIMILAR;
LaserBlock.pixoffs = 0;
LaserBlock.color = BUILD_COLOR (MAKE_RGB15 (0x1F, 0x1F, 0x1F), 0x0F);
hPointDefense = initialize_laser (&LaserBlock);
if (hPointDefense)
{
ELEMENTPTR PDPtr;
LockElement (hPointDefense, &PDPtr);
SetElementStarShip (PDPtr, StarShipPtr);
PDPtr->hTarget = 0;
UnlockElement (hPointDefense);
PutElement (hPointDefense);
}
}
}
UnlockElement (hObject);
}
UnlockElement (StarShipPtr->hShip);
}
}
static void
confuse_preprocess (ELEMENT *ElementPtr)
{
if (!(ElementPtr->state_flags & NONSOLID))
{
ElementPtr->next.image.frame = SetAbsFrameIndex (
ElementPtr->current.image.frame,
(GetFrameIndex (ElementPtr->current.image.frame) + 1) & 7);
ElementPtr->state_flags |= CHANGING;
}
else if (ElementPtr->hTarget == 0)
{
ElementPtr->life_span = 0;
ElementPtr->state_flags |= DISAPPEARING;
}
else
{
ELEMENT *eptr;
LockElement (ElementPtr->hTarget, &eptr);
ElementPtr->next.location = eptr->next.location;
if (ElementPtr->turn_wait)
{
HELEMENT hEffect;
STARSHIP *StarShipPtr;
if (GetFrameIndex (ElementPtr->next.image.frame =
IncFrameIndex (ElementPtr->current.image.frame)) == 0)
ElementPtr->next.image.frame =
SetRelFrameIndex (ElementPtr->next.image.frame, -8);
GetElementStarShip (eptr, &StarShipPtr);
StarShipPtr->ship_input_state =
(StarShipPtr->ship_input_state
& ~(LEFT | RIGHT | SPECIAL))
| ElementPtr->turn_wait;
// Disable Ur-Quan autoturret.
if (StarShipPtr && StarShipPtr->SpeciesID == UR_QUAN_ID)
++StarShipPtr->auxiliary_counter;
hEffect = AllocElement ();
if (hEffect)
{
LockElement (hEffect, &eptr);
eptr->playerNr = ElementPtr->playerNr;
eptr->state_flags = FINITE_LIFE | NONSOLID | CHANGING;
eptr->life_span = 1;
eptr->current = eptr->next = ElementPtr->next;
eptr->preprocess_func = confuse_preprocess;
SetPrimType (&(GLOBAL (DisplayArray))[eptr->PrimIndex],
STAMP_PRIM);
GetElementStarShip (ElementPtr, &StarShipPtr);
SetElementStarShip (eptr, StarShipPtr);
eptr->hTarget = ElementPtr->hTarget;
UnlockElement (hEffect);
PutElement (hEffect);
}
}
UnlockElement (ElementPtr->hTarget);
}
}
// Preprocess function for spawning a ship into or out of battle.
// Used when a new ship warps in, or a ship escapes by warping out, but not
// when a Pkunk ship is reborn.
void
ship_transition (ELEMENT *ElementPtr)
{
if (ElementPtr->state_flags & PLAYER_SHIP)
{
if (ElementPtr->state_flags & APPEARING)
{
ElementPtr->life_span = HYPERJUMP_LIFE;
ElementPtr->preprocess_func = ship_transition;
ElementPtr->postprocess_func = NULL;
SetPrimType (&DisplayArray[ElementPtr->PrimIndex], NO_PRIM);
ElementPtr->state_flags |= NONSOLID | FINITE_LIFE | CHANGING;
}
else if (ElementPtr->life_span < HYPERJUMP_LIFE)
{
if (ElementPtr->life_span == NORMAL_LIFE
&& ElementPtr->crew_level)
{
ElementPtr->current.image.frame =
ElementPtr->next.image.frame =
SetEquFrameIndex (
ElementPtr->current.image.farray[0],
ElementPtr->current.image.frame);
SetPrimType (&DisplayArray[ElementPtr->PrimIndex], STAMP_PRIM);
InitIntersectStartPoint (ElementPtr);
InitIntersectEndPoint (ElementPtr);
InitIntersectFrame (ElementPtr);
ZeroVelocityComponents (&ElementPtr->velocity);
ElementPtr->state_flags &= ~(NONSOLID | FINITE_LIFE);
ElementPtr->state_flags |= CHANGING;
ElementPtr->preprocess_func = ship_preprocess;
ElementPtr->postprocess_func = ship_postprocess;
}
return;
}
}
{
HELEMENT hShipImage;
ELEMENT *ShipImagePtr;
STARSHIP *StarShipPtr;
GetElementStarShip (ElementPtr, &StarShipPtr);
LockElement (StarShipPtr->hShip, &ShipImagePtr);
if (!(ShipImagePtr->state_flags & NONSOLID))
{
ElementPtr->preprocess_func = NULL;
}
else if ((hShipImage = AllocElement ()))
{
#define TRANSITION_SPEED DISPLAY_TO_WORLD (40 << RESOLUTION_FACTOR) // JMS_GFX
#define TRANSITION_LIFE 1
COUNT angle;
PutElement (hShipImage);
angle = FACING_TO_ANGLE (StarShipPtr->ShipFacing);
LockElement (hShipImage, &ShipImagePtr);
ShipImagePtr->playerNr = NEUTRAL_PLAYER_NUM;
ShipImagePtr->state_flags = APPEARING | FINITE_LIFE | NONSOLID;
ShipImagePtr->thrust_wait = TRANSITION_LIFE;
ShipImagePtr->life_span = ShipImagePtr->thrust_wait;
// When the element "dies", in the death_func
// 'cycle_ion_trail', it is given new life a number of
// times, by setting life_span to thrust_wait.
SetPrimType (&DisplayArray[ShipImagePtr->PrimIndex],
STAMPFILL_PRIM);
SetPrimColor (&DisplayArray[ShipImagePtr->PrimIndex],
START_ION_COLOR);
ShipImagePtr->colorCycleIndex = 0;
ShipImagePtr->current.image = ElementPtr->current.image;
ShipImagePtr->current.location = ElementPtr->current.location;
if (!(ElementPtr->state_flags & PLAYER_SHIP))
{
ShipImagePtr->current.location.x +=
COSINE (angle, TRANSITION_SPEED);
ShipImagePtr->current.location.y +=
SINE (angle, TRANSITION_SPEED);
ElementPtr->preprocess_func = NULL;
}
else if (ElementPtr->crew_level)
{
ShipImagePtr->current.location.x -=
COSINE (angle, TRANSITION_SPEED)
* (ElementPtr->life_span - 1);
ShipImagePtr->current.location.y -=
SINE (angle, TRANSITION_SPEED)
* (ElementPtr->life_span - 1);
ShipImagePtr->current.location.x =
WRAP_X (ShipImagePtr->current.location.x);
ShipImagePtr->current.location.y =
WRAP_Y (ShipImagePtr->current.location.y);
}
ShipImagePtr->preprocess_func = ship_transition;
ShipImagePtr->death_func = cycle_ion_trail;
SetElementStarShip (ShipImagePtr, StarShipPtr);
UnlockElement (hShipImage);
}
UnlockElement (StarShipPtr->hShip);
}
}
static void
explosion_preprocess (ELEMENT *ShipPtr)
{
BYTE i;
i = (NUM_EXPLOSION_FRAMES * 3) - ShipPtr->life_span;
switch (i)
{
case 25:
ShipPtr->preprocess_func = NULL;
case 0:
case 1:
case 2:
case 20:
case 21:
case 22:
case 23:
case 24:
i = 1;
break;
case 3:
case 4:
case 5:
case 18:
case 19:
i = 2;
break;
case 15:
SetPrimType (&DisplayArray[ShipPtr->PrimIndex], NO_PRIM);
ShipPtr->state_flags |= CHANGING;
default:
i = 3;
break;
}
do
{
HELEMENT hElement;
hElement = AllocElement ();
if (hElement)
{
COUNT angle, dist;
DWORD rand_val;
ELEMENT *ElementPtr;
extern FRAME explosion[];
PutElement (hElement);
LockElement (hElement, &ElementPtr);
ElementPtr->playerNr = NEUTRAL_PLAYER_NUM;
ElementPtr->state_flags = APPEARING | FINITE_LIFE | NONSOLID;
ElementPtr->life_span = 9;
SetPrimType (&DisplayArray[ElementPtr->PrimIndex], STAMP_PRIM);
ElementPtr->current.image.farray = explosion;
ElementPtr->current.image.frame = explosion[0];
rand_val = TFB_Random ();
angle = LOBYTE (HIWORD (rand_val));
dist = DISPLAY_TO_WORLD (LOBYTE (LOWORD (rand_val)) % 8);
if (HIBYTE (LOWORD (rand_val)) < 256 * 1 / 3)
dist += DISPLAY_TO_WORLD (8);
ElementPtr->current.location.x =
ShipPtr->current.location.x + COSINE (angle, dist);
ElementPtr->current.location.y =
ShipPtr->current.location.y + SINE (angle, dist);
ElementPtr->preprocess_func = animation_preprocess;
rand_val = TFB_Random ();
angle = LOBYTE (LOWORD (rand_val));
dist = WORLD_TO_VELOCITY (
DISPLAY_TO_WORLD (HIBYTE (LOWORD (rand_val)) % 5));
SetVelocityComponents (&ElementPtr->velocity,
COSINE (angle, dist), SINE (angle, dist));
UnlockElement (hElement);
}
} while (--i);
}
// XXX: This function should be split into two
static void
self_destruct (ELEMENT *ElementPtr)
{
STARSHIP *StarShipPtr;
GetElementStarShip (ElementPtr, &StarShipPtr);
if (ElementPtr->state_flags & PLAYER_SHIP)
{
HELEMENT hDestruct;
// Spawn a temporary element, which dies in this same frame, in order
// to defer the effects of the glory explosion.
// It will be the last element (or one of the last) for which the
// death_func will be called from PostProcessQueue() in this frame.
hDestruct = AllocElement ();
if (hDestruct)
{
ELEMENT *DestructPtr;
LockElement (hDestruct, &DestructPtr);
DestructPtr->playerNr = ElementPtr->playerNr;
DestructPtr->state_flags = APPEARING | NONSOLID | FINITE_LIFE;
DestructPtr->next.location = ElementPtr->next.location;
DestructPtr->life_span = 0;
DestructPtr->pParent = ElementPtr->pParent;
DestructPtr->hTarget = 0;
DestructPtr->death_func = self_destruct;
UnlockElement (hDestruct);
PutElement (hDestruct);
}
ElementPtr->state_flags |= NONSOLID;
// The ship is now dead. It's death_func, i.e. ship_death(), will be
// called the next frame.
ElementPtr->life_span = 0;
ElementPtr->preprocess_func = destruct_preprocess;
}
else
{
// This is called during PostProcessQueue(), close to or at the end,
// for the temporary destruct element to apply the effects of glory
// explosion. The effects are not seen until the next frame.
HELEMENT hElement, hNextElement;
for (hElement = GetHeadElement ();
hElement != 0; hElement = hNextElement)
{
ELEMENT *ObjPtr;
LockElement (hElement, &ObjPtr);
hNextElement = GetSuccElement (ObjPtr);
if (CollidingElement (ObjPtr) || ORZ_MARINE (ObjPtr))
{
#define DESTRUCT_RANGE 180
SIZE delta_x, delta_y;
DWORD dist;
if ((delta_x = ObjPtr->next.location.x
- ElementPtr->next.location.x) < 0)
delta_x = -delta_x;
if ((delta_y = ObjPtr->next.location.y
- ElementPtr->next.location.y) < 0)
delta_y = -delta_y;
delta_x = WORLD_TO_DISPLAY (delta_x);
delta_y = WORLD_TO_DISPLAY (delta_y);
if (delta_x <= DESTRUCT_RANGE && delta_y <= DESTRUCT_RANGE
&& (dist = (DWORD)(delta_x * delta_x)
+ (DWORD)(delta_y * delta_y)) <=
(DWORD)(DESTRUCT_RANGE * DESTRUCT_RANGE))
{
#define MAX_DESTRUCTION (DESTRUCT_RANGE / 10)
SIZE destruction;
destruction = ((MAX_DESTRUCTION
* (DESTRUCT_RANGE - square_root (dist)))
/ DESTRUCT_RANGE) + 1;
if (ObjPtr->state_flags & PLAYER_SHIP)
{
if (!DeltaCrew (ObjPtr, -destruction))
ObjPtr->life_span = 0;
}
else if (!GRAVITY_MASS (ObjPtr->mass_points))
{
if ((BYTE)destruction < ObjPtr->hit_points)
ObjPtr->hit_points -= (BYTE)destruction;
else
{
ObjPtr->hit_points = 0;
ObjPtr->life_span = 0;
}
}
}
}
UnlockElement (hElement);
}
}
}
static void
destruct_preprocess (ELEMENT *ElementPtr)
{
#define DESTRUCT_SWITCH ((NUM_EXPLOSION_FRAMES * 3) - 3)
PRIMITIVE *lpPrim;
// ship_death() set the ship element's life_span to
// (NUM_EXPLOSION_FRAMES * 3)
lpPrim = &(GLOBAL (DisplayArray))[ElementPtr->PrimIndex];
ElementPtr->state_flags |= CHANGING;
if (ElementPtr->life_span > DESTRUCT_SWITCH)
{
// First, stamp-fill the ship's own element with changing colors
// for 3 frames. No explosion element yet.
SetPrimType (lpPrim, STAMPFILL_PRIM);
if (ElementPtr->life_span == DESTRUCT_SWITCH + 2)
SetPrimColor (lpPrim,
BUILD_COLOR (MAKE_RGB15 (0x1F, 0x1F, 0x0A), 0x0E));
else
SetPrimColor (lpPrim,
BUILD_COLOR (MAKE_RGB15 (0x1F, 0x1F, 0x1F), 0x0F));
}
else if (ElementPtr->life_span < DESTRUCT_SWITCH)
{
// Stamp-fill the explosion element with cycling colors for the
// remainder of the glory explosion frames.
Color color = GetPrimColor (lpPrim);
ElementPtr->next.image.frame =
IncFrameIndex (ElementPtr->current.image.frame);
if (sameColor (color,
BUILD_COLOR (MAKE_RGB15 (0x1F, 0x1F, 0x1F), 0x0F)))
SetPrimColor (lpPrim,
BUILD_COLOR (MAKE_RGB15 (0x1F, 0x1F, 0x0A), 0x0E));
else if (sameColor (color,
BUILD_COLOR (MAKE_RGB15 (0x1F, 0x1F, 0x0A), 0x0E)))
SetPrimColor (lpPrim,
BUILD_COLOR (MAKE_RGB15 (0x1F, 0x0A, 0x0A), 0x0C));
else if (sameColor (color,
BUILD_COLOR (MAKE_RGB15 (0x1F, 0x0A, 0x0A), 0x0C)))
SetPrimColor (lpPrim,
BUILD_COLOR (MAKE_RGB15 (0x14, 0x0A, 0x00), 0x06));
else if (sameColor (color,
BUILD_COLOR (MAKE_RGB15 (0x14, 0x0A, 0x00), 0x06)))
SetPrimColor (lpPrim,
BUILD_COLOR (MAKE_RGB15 (0x14, 0x00, 0x00), 0x04));
}
else
{
HELEMENT hDestruct;
SetPrimType (lpPrim, NO_PRIM);
// The ship's own element will not be drawn anymore but will remain
// alive all through the glory explosion.
ElementPtr->preprocess_func = NULL;
// Spawn a separate glory explosion element.
// XXX: Why? Why not keep using the ship's element?
// Is it because of conflicting state_flags, hit_points or
// mass_points?
hDestruct = AllocElement ();
if (hDestruct)
{
ELEMENT *DestructPtr;
STARSHIP *StarShipPtr;
GetElementStarShip (ElementPtr, &StarShipPtr);
PutElement (hDestruct);
LockElement (hDestruct, &DestructPtr);
SetElementStarShip (DestructPtr, StarShipPtr);
DestructPtr->hit_points = DestructPtr->mass_points = 0;
DestructPtr->playerNr = NEUTRAL_PLAYER_NUM;
DestructPtr->state_flags = APPEARING | FINITE_LIFE | NONSOLID;
DestructPtr->life_span = (NUM_EXPLOSION_FRAMES - 3) - 1;
SetPrimType (&(GLOBAL (DisplayArray))[DestructPtr->PrimIndex],
STAMPFILL_PRIM);
SetPrimColor (&(GLOBAL (DisplayArray))[DestructPtr->PrimIndex],
BUILD_COLOR (MAKE_RGB15 (0x1F, 0x1F, 0x1F), 0x0F));
DestructPtr->current.image.farray =
StarShipPtr->RaceDescPtr->ship_data.special;
DestructPtr->current.image.frame =
StarShipPtr->RaceDescPtr->ship_data.special[0];
DestructPtr->current.location = ElementPtr->current.location;
DestructPtr->preprocess_func = destruct_preprocess;
DestructPtr->postprocess_func = NULL;
DestructPtr->death_func = NULL;
ZeroVelocityComponents (&DestructPtr->velocity);
UnlockElement (hDestruct);
}
}
}
static void
pump_up_postprocess (ELEMENT *ElementPtr)
{
if (ElementPtr->state_flags & APPEARING)
{
ZeroVelocityComponents (&ElementPtr->velocity);
}
else
{
HELEMENT hPumpUp;
ELEMENT *EPtr;
ELEMENT *ShipPtr;
STARSHIP *StarShipPtr;
GetElementStarShip (ElementPtr, &StarShipPtr);
LockElement (StarShipPtr->hShip, &ShipPtr);
initialize_pump_up (ShipPtr, &hPumpUp);
DeltaEnergy (ShipPtr, 0);
UnlockElement (StarShipPtr->hShip);
LockElement (hPumpUp, &EPtr);
EPtr->current.image.frame = ElementPtr->current.image.frame;
EPtr->turn_wait = ElementPtr->turn_wait;
EPtr->thrust_wait = ElementPtr->thrust_wait;
if (--EPtr->thrust_wait == 0)
{
if ((EPtr->turn_wait & ~REVERSE_DIR) < MAX_PUMP - 1)
{
++EPtr->turn_wait;
EPtr->current.image.frame = SetRelFrameIndex (
EPtr->current.image.frame, NUM_PUMP_ANIMS);
ProcessSound (SetAbsSoundIndex (
StarShipPtr->RaceDescPtr->ship_data.ship_sounds, 2),
EPtr);
}
EPtr->thrust_wait = LEVEL_COUNTER;
}
EPtr->mass_points = EPtr->hit_points =
(PUMPUP_DAMAGE << (ElementPtr->turn_wait & ~REVERSE_DIR));
SetElementStarShip (EPtr, StarShipPtr);
if (EPtr->thrust_wait & 1)
{
COUNT frame_index;
frame_index = GetFrameIndex (EPtr->current.image.frame);
if (((EPtr->turn_wait & REVERSE_DIR)
&& (frame_index % NUM_PUMP_ANIMS) != 0)
|| (!(EPtr->turn_wait & REVERSE_DIR)
&& ((frame_index + 1) % NUM_PUMP_ANIMS) == 0))
{
--frame_index;
EPtr->turn_wait |= REVERSE_DIR;
}
else
{
++frame_index;
EPtr->turn_wait &= ~REVERSE_DIR;
}
EPtr->current.image.frame = SetAbsFrameIndex (
EPtr->current.image.frame, frame_index);
}
if (StarShipPtr->cur_status_flags & StarShipPtr->old_status_flags
& WEAPON)
{
StarShipPtr->weapon_counter = WEAPON_WAIT;
}
else
{
SIZE dx, dy;
COUNT angle;
EPtr->life_span = PUMPUP_LIFE;
EPtr->preprocess_func = pump_up_preprocess;
EPtr->postprocess_func = 0;
angle = FACING_TO_ANGLE (StarShipPtr->ShipFacing);
SetVelocityComponents (&EPtr->velocity,
COSINE (angle, WORLD_TO_VELOCITY (PUMPUP_SPEED)),
SINE (angle, WORLD_TO_VELOCITY (PUMPUP_SPEED)));
GetCurrentVelocityComponents (&ShipPtr->velocity, &dx, &dy);
dx = dx * 1/2;
dy = dy * 1/2;
// Add some of the Trader's velocity to its projectiles.
DeltaVelocityComponents (&EPtr->velocity, dx, dy);
EPtr->current.location.x -= VELOCITY_TO_WORLD (dx);
EPtr->current.location.y -= VELOCITY_TO_WORLD (dy);
ProcessSound (SetAbsSoundIndex (
StarShipPtr->RaceDescPtr->ship_data.ship_sounds, 3), EPtr);
}
UnlockElement (hPumpUp);
PutElement (hPumpUp);
SetPrimType (&(GLOBAL (DisplayArray))[ElementPtr->PrimIndex],
NO_PRIM);
ElementPtr->state_flags |= NONSOLID;
}
}
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)
// Secondary weapon: Gas cloud.
// The IGNORE_VELOCITY flag is very important: It doesn't only stop the gas from reacting to gravity,
// (see collide.h) but it also makes it possible for the gas to stick to enemy ship (see this file's other gas functions).
static void spawn_gas (ELEMENT *ShipPtr)
{
STARSHIP *StarShipPtr;
MISSILE_BLOCK MissileBlock;
HELEMENT Missile;
SIZE offs_x, offs_y;
COUNT angle;
static COUNT gas_side[NUM_SIDES] = {0, 0};
static COUNT gas_number[NUM_SIDES] = {0, 0};
GetElementStarShip (ShipPtr, &StarShipPtr);
gas_number[ShipPtr->playerNr] = (gas_number[ShipPtr->playerNr] + 1) % 32;
gas_side[ShipPtr->playerNr] = (gas_side[ShipPtr->playerNr] + 1) % 2;
angle = FACING_TO_ANGLE (StarShipPtr->ShipFacing);
// This mechanism can be used to alter the "pipe" from which the gas clouds come.
if(gas_side[ShipPtr->playerNr])
{
offs_x = -SINE (angle, GAS_HORZ_OFFSET);
offs_y = COSINE (angle, GAS_HORZ_OFFSET);
}
else
{
offs_x = -SINE (angle, GAS_HORZ_OFFSET);
offs_y = COSINE (angle, GAS_HORZ_OFFSET);
}
MissileBlock.cx = ShipPtr->next.location.x + offs_x;
MissileBlock.cy = ShipPtr->next.location.y + offs_y;
MissileBlock.farray = StarShipPtr->RaceDescPtr->ship_data.special;
MissileBlock.face = StarShipPtr->ShipFacing;// Baul's gas now flies forward. (this was: (StarShipPtr->ShipFacing - 8) % 16;)
MissileBlock.index = LAST_DISSOLVE_INDEX; // Start with the gas emerge animation which is the last .pngs in gasXX.ani
MissileBlock.sender = ShipPtr->playerNr;
MissileBlock.flags = GASSY_SUBSTANCE | IGNORE_VELOCITY; // Don't erase the IGNORE_VELOCITY. It's very important.
MissileBlock.pixoffs = GAS_OFFSET;
MissileBlock.speed = GAS_INIT_SPEED;
MissileBlock.hit_points = GAS_HITS;
MissileBlock.damage = GAS_DAMAGE;
MissileBlock.life = GAS_LIFE;
MissileBlock.preprocess_func = gas_preprocess;
MissileBlock.blast_offs = 0;
Missile = initialize_missile (&MissileBlock);
if (Missile)
{
ELEMENT *GasPtr;
SIZE dx, dy; // Baul's gas now flies forward.
LockElement (Missile, &GasPtr);
// Baul's gas now flies forward.
GetCurrentVelocityComponents (&ShipPtr->velocity, &dx, &dy);
DeltaVelocityComponents (&GasPtr->velocity, dx, dy);
GasPtr->current.location.x -= VELOCITY_TO_WORLD (dx);
GasPtr->current.location.y -= VELOCITY_TO_WORLD (dy);
GasPtr->collision_func = gas_collision;
GasPtr->death_func = gas_death;
GasPtr->thrust_wait = 1;
GasPtr->weapon_element_index = gas_number[ShipPtr->playerNr];
SetElementStarShip (GasPtr, StarShipPtr);
ProcessSound (SetAbsSoundIndex (StarShipPtr->RaceDescPtr->ship_data.ship_sounds, 1), GasPtr);
UnlockElement (Missile);
PutElement (Missile);
}
}
// When hit by Baul spray, gas clouds explodes transforming into a lethal shockwave.
static void
generate_shockwave (ELEMENT *ElementPtr, BYTE which_player)
{
STARSHIP *StarShipPtr;
GetElementStarShip (ElementPtr, &StarShipPtr);
// Gas is still 'solid' when it's hit by the spray. Let's make a shockwave and kill the gas cloud.
if (!(ElementPtr->state_flags & NONSOLID))
{
HELEMENT hShockwave;
hShockwave = AllocElement ();
if (hShockwave)
{
ELEMENT *ShockwavePtr;
STARSHIP *StarShipPtr;
GetElementStarShip (ElementPtr, &StarShipPtr);
PutElement (hShockwave);
LockElement (hShockwave, &ShockwavePtr);
SetElementStarShip (ShockwavePtr, StarShipPtr);
ShockwavePtr->hit_points = ShockwavePtr->mass_points = 0;
ShockwavePtr->playerNr = which_player;
ShockwavePtr->state_flags = APPEARING | FINITE_LIFE | NONSOLID | IGNORE_SIMILAR;
ShockwavePtr->life_span = SHOCKWAVE_FRAMES;
SetPrimType (&(GLOBAL (DisplayArray))[ShockwavePtr->PrimIndex], STAMP_PRIM);
ShockwavePtr->current.image.farray = StarShipPtr->RaceDescPtr->ship_data.special;
ShockwavePtr->current.image.frame = SetAbsFrameIndex(StarShipPtr->RaceDescPtr->ship_data.special[0], LAST_GAS_INDEX);
ShockwavePtr->next.image.frame = SetAbsFrameIndex(ElementPtr->current.image.frame, LAST_GAS_INDEX);
ShockwavePtr->current.location = ElementPtr->current.location;
ShockwavePtr->preprocess_func = shockwave_preprocess;
ShockwavePtr->postprocess_func = NULL;
ShockwavePtr->death_func = NULL;
ZeroVelocityComponents (&ShockwavePtr->velocity);
UnlockElement (hShockwave);
}
// Gas dies on the next turn.
ElementPtr->state_flags |= NONSOLID;
// Explosion sounds.
ProcessSound (SetAbsSoundIndex (StarShipPtr->RaceDescPtr->ship_data.ship_sounds, 2), ElementPtr);
ProcessSound (SetAbsSoundIndex (GameSounds, TARGET_DAMAGED_FOR_6_PLUS_PT), ElementPtr);
}
{
// This is called during PostProcessQueue(), close to or at the end,
// for the temporary shockwave element to apply the damage.
// The effects are not seen until the next frame.
HELEMENT hElement, hNextElement;
for (hElement = GetHeadElement (); hElement != 0; hElement = hNextElement)
{
ELEMENT *ObjPtr;
LockElement (hElement, &ObjPtr);
hNextElement = GetSuccElement (ObjPtr);
if (IS_GAS (ObjPtr))
{
SIZE delta_x, delta_y;
DWORD dist;
if ((delta_x = ObjPtr->next.location.x - ElementPtr->next.location.x) < 0) delta_x = -delta_x;
if ((delta_y = ObjPtr->next.location.y - ElementPtr->next.location.y) < 0) delta_y = -delta_y;
delta_x = WORLD_TO_DISPLAY (delta_x);
delta_y = WORLD_TO_DISPLAY (delta_y);
if (delta_x <= SHOCKWAVE_RANGE && delta_y <= SHOCKWAVE_RANGE
&& (dist = (DWORD)(delta_x * delta_x) + (DWORD)(delta_y * delta_y)) <= (DWORD)(SHOCKWAVE_RANGE * SHOCKWAVE_RANGE))
{
SIZE destruction;
destruction = ((MAX_DESTRUCTION * (SHOCKWAVE_RANGE - square_root (dist))) / SHOCKWAVE_RANGE) + 1;
// The shockwave is delayed according to how far it is from the shockwave that set it off.
ObjPtr->life_span = (10 / destruction);
ObjPtr->death_func = generate_shockwave_2;
ObjPtr->playerNr = which_player;
}
}
else if (CollidingElement (ObjPtr) || ORZ_MARINE (ObjPtr))
{
SIZE delta_x, delta_y;
DWORD dist;
if ((delta_x = ObjPtr->next.location.x - ElementPtr->next.location.x) < 0) delta_x = -delta_x;
if ((delta_y = ObjPtr->next.location.y - ElementPtr->next.location.y) < 0) delta_y = -delta_y;
delta_x = WORLD_TO_DISPLAY (delta_x);
delta_y = WORLD_TO_DISPLAY (delta_y);
if (delta_x <= SHOCKWAVE_RANGE && delta_y <= SHOCKWAVE_RANGE
&& (dist = (DWORD)(delta_x * delta_x) + (DWORD)(delta_y * delta_y)) <= (DWORD)(SHOCKWAVE_RANGE * SHOCKWAVE_RANGE))
{
SIZE destruction;
destruction = ((MAX_DESTRUCTION * (SHOCKWAVE_RANGE - square_root (dist))) / SHOCKWAVE_RANGE) + 1;
if (ObjPtr->state_flags & PLAYER_SHIP && ObjPtr->playerNr != which_player)
{
STARSHIP *EnemyShipPtr;
GetElementStarShip (ObjPtr, &EnemyShipPtr);
// Deal damage to ships except shield-using Yehat & Utwig.
if (!((EnemyShipPtr->SpeciesID == YEHAT_ID || EnemyShipPtr->SpeciesID == UTWIG_ID)
&& ObjPtr->life_span > NORMAL_LIFE))
{
if (!DeltaCrew (ObjPtr, -destruction))
ObjPtr->life_span = 0;
}
// Charge Utwig shield.
else if (EnemyShipPtr->SpeciesID == UTWIG_ID && ObjPtr->life_span > NORMAL_LIFE)
ObjPtr->life_span += destruction;
}
else if (!GRAVITY_MASS (ObjPtr->mass_points) && ObjPtr->playerNr != which_player)
{
if ((BYTE)destruction < ObjPtr->hit_points)
ObjPtr->hit_points -= (BYTE)destruction;
else
{
ObjPtr->hit_points = 0;
ObjPtr->life_span = 0;
}
}
}
}
UnlockElement (hElement);
}
}
}
static void
spawn_crew (ELEMENT *ElementPtr)
{
if (ElementPtr->state_flags & PLAYER_SHIP)
{
HELEMENT hCrew;
hCrew = AllocElement ();
if (hCrew != 0)
{
ELEMENT *CrewPtr;
LockElement (hCrew, &CrewPtr);
CrewPtr->next.location = ElementPtr->next.location;
CrewPtr->playerNr = ElementPtr->playerNr;
CrewPtr->state_flags = APPEARING | NONSOLID | FINITE_LIFE;
CrewPtr->life_span = 0;
CrewPtr->death_func = spawn_crew;
CrewPtr->pParent = ElementPtr->pParent;
CrewPtr->hTarget = 0;
UnlockElement (hCrew);
PutElement (hCrew);
}
}
else
{
HELEMENT hElement, hNextElement;
for (hElement = GetHeadElement ();
hElement != 0; hElement = hNextElement)
{
ELEMENT *ObjPtr;
LockElement (hElement, &ObjPtr);
hNextElement = GetSuccElement (ObjPtr);
if ((ObjPtr->state_flags & PLAYER_SHIP)
&& !elementsOfSamePlayer (ObjPtr, ElementPtr)
&& ObjPtr->crew_level > 1)
{
SIZE dx, dy;
DWORD d_squared;
dx = ObjPtr->next.location.x - ElementPtr->next.location.x;
if (dx < 0)
dx = -dx;
dy = ObjPtr->next.location.y - ElementPtr->next.location.y;
if (dy < 0)
dy = -dy;
dx = WORLD_TO_DISPLAY (dx);
dy = WORLD_TO_DISPLAY (dy);
#define ABANDONER_RANGE (208 << RESOLUTION_FACTOR) // JMS_GFX /* originally SPACE_HEIGHT */
if (dx <= ABANDONER_RANGE && dy <= ABANDONER_RANGE
&& (d_squared = (DWORD)((UWORD)dx * (UWORD)dx)
+ (DWORD)((UWORD)dy * (UWORD)dy)) <=
(DWORD)((UWORD)ABANDONER_RANGE * (UWORD)ABANDONER_RANGE))
{
#define MAX_ABANDONERS 8
COUNT crew_loss;
crew_loss = ((MAX_ABANDONERS
* (ABANDONER_RANGE - square_root (d_squared)))
/ ABANDONER_RANGE) + 1;
if (crew_loss >= ObjPtr->crew_level)
crew_loss = ObjPtr->crew_level - 1;
AbandonShip (ObjPtr, ElementPtr, crew_loss);
}
}
UnlockElement (hElement);
}
}
}
void
spawn_asteroid (ELEMENT *ElementPtr)
{
HELEMENT hAsteroidElement;
if ((hAsteroidElement = AllocElement ()) == 0)
{
if (ElementPtr != 0)
{
ElementPtr->state_flags &= ~DISAPPEARING;
SetPrimType (&DisplayArray[ElementPtr->PrimIndex], NO_PRIM);
ElementPtr->life_span = 1;
}
}
else
{
ELEMENT *AsteroidElementPtr;
COUNT val;
LockElement (hAsteroidElement, &AsteroidElementPtr);
AsteroidElementPtr->playerNr = NEUTRAL_PLAYER_NUM;
AsteroidElementPtr->hit_points = 1;
AsteroidElementPtr->mass_points = 3;
AsteroidElementPtr->state_flags = APPEARING;
AsteroidElementPtr->life_span = NORMAL_LIFE;
SetPrimType (&DisplayArray[AsteroidElementPtr->PrimIndex], STAMP_PRIM);
if ((val = (COUNT)TFB_Random ()) & (1 << 0))
{
if (!(val & (1 << 1)))
AsteroidElementPtr->current.location.x = 0;
else
AsteroidElementPtr->current.location.x = LOG_SPACE_WIDTH;
AsteroidElementPtr->current.location.y =
WRAP_Y (DISPLAY_ALIGN_Y (TFB_Random ()));
}
else
{
AsteroidElementPtr->current.location.x =
WRAP_X (DISPLAY_ALIGN_X (TFB_Random ()));
if (!(val & (1 << 1)))
AsteroidElementPtr->current.location.y = 0;
else
AsteroidElementPtr->current.location.y = LOG_SPACE_HEIGHT;
}
{
// Using these temporary variables because the execution order
// of function arguments may vary per system, which may break
// synchronisation on network games.
SIZE magnitude =
DISPLAY_TO_WORLD (((SIZE)TFB_Random () & 7) + 4);
COUNT facing = (COUNT)TFB_Random ();
SetVelocityVector (&AsteroidElementPtr->velocity, magnitude,
facing);
}
AsteroidElementPtr->current.image.farray = asteroid;
AsteroidElementPtr->current.image.frame =
SetAbsFrameIndex (asteroid[0],
NORMALIZE_FACING (TFB_Random ()));
AsteroidElementPtr->turn_wait =
AsteroidElementPtr->thrust_wait =
(BYTE)TFB_Random () & (BYTE)((1 << 2) - 1);
AsteroidElementPtr->thrust_wait |=
(BYTE)TFB_Random () & (BYTE)(1 << 7);
AsteroidElementPtr->preprocess_func = asteroid_preprocess;
AsteroidElementPtr->death_func = spawn_rubble;
AsteroidElementPtr->collision_func = collision;
AsteroidElementPtr->triggers_teleport_safety = TRUE;
UnlockElement (hAsteroidElement);
PutElement (hAsteroidElement);
}
}
