1 line
4.9 KiB
C
1 line
4.9 KiB
C
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#include "wolfdef.h"
/**********************************
Returns a pointer to an empty missile record
**********************************/
missile_t *GetNewMissile(void)
{
Word Count;
Count = nummissiles;
if (Count < MAXMISSILES) { /* Already full? */
++Count; /* Next entry */
nummissiles = Count; /* Save the new missile count */
}
return &missiles[Count-1]; /* Get pointer to empty missile */
}
/**********************************
Explode a missile
**********************************/
void ExplodeMissile(missile_t *MissilePtr)
{
MissilePtr->flags = 0; /* Can't harm anyone! */
if (MissilePtr->type == MI_PMISSILE) {
MissilePtr->pic = S_MISSBOOM; /* Rocket explosion */
MissilePtr->type = 16; /* Tics to stay in explosion*/
} else {
MissilePtr->pic = S_FIREBOOM; /* Fire explosion */
MissilePtr->type = 8; /* Tics to stay in explosion*/
}
PlaySound(SND_BOOM|0x8000); /* BOOM! */
MissilePtr->x -= MissilePtr->xspeed; /* Undo the last motion */
MissilePtr->y -= MissilePtr->yspeed;
MissilePtr->xspeed = 0; /* Don't move anymore */
MissilePtr->yspeed = 0;
}
/**********************************
Take damage from the player
Damage is 8,16...64, pass the x,y for a kill x,y
**********************************/
void MissileHitPlayer(missile_t *MissilePtr)
{
TakeDamage((w_rnd()&0x38)+8,MissilePtr->x,MissilePtr->y); /* Inflict damage */
}
/**********************************
Take damage from the enemy
Detonate if not killed (return True)
**********************************/
Boolean MissileHitEnemy(missile_t *MissilePtr, actor_t *ActorPtr)
{
Word Damage;
if (MissilePtr->type == MI_PMISSILE) { /* Rocket? */
Damage = (w_rnd()&0x30)+16; /* Hit'm hard! */
} else {
Damage = (w_rnd()&0x0f)+1; /* Burn a little */
}
DamageActor(Damage,ActorPtr); /* Hit'em! */
return !(ActorPtr->flags & FL_DEAD); /* Not dead? */
}
/**********************************
Did the missile impact on an actor
**********************************/
Boolean CheckMissileActorHits(missile_t *MissilePtr)
{
Word xl,xh,yh;
Word x,y;
Word Bang;
Word tile;
actor_t *ActorPtr;
Bang = 0; /* Assume the missile is OK */
xl = (MissilePtr->x>>FRACBITS)-1; /* Create the kill rect */
xh = xl+3;
y = (MissilePtr->y>>FRACBITS)-1;
yh = y+3;
if (xl>=MAPSIZE) { /* Clip the attack rect to STAY on the map! */
xl = 0;
}
if (y>=MAPSIZE) {
y = 0;
}
if (xh>=MAPSIZE) {
xh = MAPSIZE;
}
if (yh>=MAPSIZE) {
yh = MAPSIZE;
}
do {
x = xl; /* Begin the X scan */
do {
tile = tilemap[y][x]; /* Actor here? */
if (tile&TI_ACTOR) {
ActorPtr = &actors[MapPtr->tilemap[y][x]]; /* Check for impact */
if ( (w_abs(ActorPtr->x - MissilePtr->x) < MISSILEHITDIST) &&
(w_abs(ActorPtr->y - MissilePtr->y) < MISSILEHITDIST)) {
Bang |= MissileHitEnemy(MissilePtr,ActorPtr); /* Detonate? */
}
}
} while (++x<xh); /* Scan the x's */
} while (++y<yh); /* Scan the y's */
return Bang; /* Return detonation value */
}
/**********************************
Move the missiles each game frame
**********************************/
void MoveMissiles(void)
{
Word Count; /* Current missile # */
missile_t *MissilePtr; /* Pointer to missile record */
Word i,x,y,tile; /* Tile position */
Count = nummissiles; /* How many active missiles? */
if (!Count || !TicCount) { /* No missiles? (Or elapsed time?) */
return; /* Exit now */
}
MissilePtr = &missiles[0]; /* Init pointer to the first missile */
do {
if (!MissilePtr->flags) { /* inert explosion*/
if (MissilePtr->type>TicCount) { /* Time up? */
MissilePtr->type-=TicCount; /* Remove some time */
++MissilePtr; /* Go to the next entry */
} else {
--nummissiles; /* Remove this missile */
MissilePtr[0] = missiles[nummissiles]; /* Copy the FINAL record here */
}
continue; /* Next! */
}
/* move position*/
i = TicCount; /* How many times to try this? */
do {
MissilePtr->x += MissilePtr->xspeed;
MissilePtr->y += MissilePtr->yspeed;
/* check for contact with player*/
if (MissilePtr->flag
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