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CAT_PLAY.C
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CAT_PLAY.C
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/* The Catacomb Source Code
* Copyright (C) 1993-2014 Flat Rock Software
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
/*=====================================*/
/* */
/* newobject */
/* returns the number of a free object */
/* */
/*=====================================*/
int newobject()
{
int i;
for (i=1; i<= numobj; i++)
if (o[i].class==nothing)
goto gotit;
if (numobj<maxobj)
numobj++;
i=numobj;
gotit:
o[i].oldtile=-1;
o[i].oldx=0;
o[i].oldy=0;
return i;
}
/*=================================*/
/* */
/* printscore / printhighscore */
/* prints the scores to the screen */
/* */
/*=================================*/
void printscore()
{
sx=31;
sy=3;
printlong (score);
}
void printhighscore ()
{
sx=31;
sy=5;
printlong (highscores[1].score);
}
/*======================================*/
/* */
/* printshotpower */
/* printbody */
/* draws the meter to the current value */
/* */
/*======================================*/
void printshotpower()
{
sx=25;
sy=13;
if (shotpower == 13)
print (altmeters[13]);
else
print (meters[shotpower]);
}
void printbody()
{
sx=25;
sy=16;
if (o[0].hp>6)
print (meters[o[0].hp]);
else
print (altmeters[o[0].hp]);
}
/*=============================*/
/* */
/* levelcleared */
/* goes to the next level, or */
/* }s game if all levels done */
/* checks for warp teleporters */
/* */
/*=============================*/
void levelcleared()
{
char warp[2];
int value;
leveldone=true;
warp[0]=(char) background[altobj.y+2][altobj.x]-161;
if ( (warp[0]<'0') || (warp[0]>'9') )
warp[0]='0';
warp[1]=(char) background[altobj.y+2][altobj.x+1]-161;
if ( (warp[1]<'0') || (warp[1]>'9') )
warp[2]=' ';
value = atoi (warp);
if (value>0)
level=value;
else
level++;
if (level>numlevels)
/*all levels have been completed*/
{
playdone=true;
gamexit=victorious;
}
}
/*==================================*/
/* */
/* give / take potion / key / bolt */
/* / nuke */
/* increments the item quantity and */
/* draws an extra icon if it fits */
/* */
/*==================================*/
void givekey()
{
int i;
i=items[1]+1;
items[1]=i;
if (i<11)
drawchar (26+i,7,31); /*key icon*/
}
void givepotion()
{
int i;
i=items[2]+1;
items[2]=i;
if (i<11)
drawchar (26+i,8,29); /*potion icon*/
}
void givebolt()
{
int i;
i=items[3]+1;
items[3]=i;
if (i<11)
drawchar (26+i,9,30); /*scroll icon*/
}
void givenuke()
{
int i;
i=items[5]+1;
items[5]=i;
if (i<11)
drawchar (26+i,10,30); /*scroll icon*/
}
/* */
/* takekey */
/* */
boolean takekey()
{
int i;
if (items[1]>0)
{
i=items[1]-1;
items[1]=i;
if (i<10)
drawchar (27+i,7,32);
PlaySound (OPENDOORSND);
return true;
}
else
{
PlaySound (NOITEMSND);
return false;
}
}
/* */
/* takepotion */
/* */
void takepotion()
{
int i;
if (items[2]>0)
{
i=items[2]-1;
items[2]=i;
if (i<11)
drawchar (27+i,8,32);
PlaySound(POTIONSND);
o[0].hp=13;
obj.hp=13;
printbody(); /*update the body meter*/
}
else
PlaySound(NOITEMSND);
}
/* */
/* castbolt */
/* */
void castbolt()
{
int i;
if (items[3]>0)
{
i=items[3]-1;
items[3]=i;
if (i<11)
drawchar (27+i,9,32);
boltsleft=8;
PlaySound(SPELLSND);
}
else
PlaySound(NOITEMSND);
}
/* */
/* castnuke */
/* */
void castnuke()
{
int i,x,y,n;
activeobj base;
if (items[5]==0)
{
PlaySound(NOITEMSND);
return;
}
i=items[5]-1;
items[5]=i;
if (i<11)
drawchar (27+i,10,32);
base.delay=0;
base.stage=0;
base.active=true;
base.x=obj.x;
base.y=obj.y; /*start bigshot at same coordinate at player*/
base.oldx=x;
base.oldy=y;
base.oldtile=-1;
base.class=bigshot;
for (x=-1; x<=1; x++)
{ /*make a whole buch of bigshots*/
n=newobject();
o[n]=base;
o[n].x=o[n].x+x*2;
o[n].dir=north;
n=newobject();
o[n]=base;
o[n].x=o[n].x+x*2;
o[n].dir=south;
n=newobject();
o[n]=base;
o[n].y=o[n].y+x*2;
o[n].dir=east;
n=newobject();
o[n]=base;
o[n].y=o[n].y+x*2;
o[n].dir=west;
}
PlaySound(SPELLSND);
obj.stage=2;
obj.delay=4;
}
/*=======================================*/
/* */
/* playshoot / playbigshoot */
/* launches a missile of the proper type */
/* from the current object. chooses from*/
/* smallshot, bigshot, and monshot. */
/* */
/*=======================================*/
void playshoot()
{
int new;
obj.stage=2;
obj.delay=4;
PlaySound (SHOTSND);
new=newobject();
o[new].class=shot;
side^=1;
o[new].delay=0;
o[new].stage=0;
o[new].active=true;
o[new].dir=obj.dir; /*missile is allways facing same way as thrower*/
switch ( o[new].dir )
{
case north:
o[new].x=obj.x+side;
o[new].y=obj.y;
break;
case east:
o[new].x=obj.x+1;
o[new].y=obj.y+side;
break;
case south:
o[new].x=obj.x+side;
o[new].y=obj.y+1;
break;
case west:
o[new].x=obj.x;
o[new].y=obj.y+side;
break;
}
}
void playbigshoot()
{
int new;
obj.stage=2;
if (boltsleft==0)
obj.delay=4;
PlaySound (BIGSHOTSND);
new=newobject();
o[new].delay=0;
o[new].stage=0;
o[new].active=true;
o[new].dir=obj.dir; /*missile is allways facing same way as thrower*/
o[new].x=obj.x;
o[new].y=obj.y; /*start bigshot at same coordinate at player*/
o[new].class=bigshot;
}
/*============================*/
/* */
/* givescroll */
/* randomly gives a bolt/nuke */
/* */
/*============================*/
void givescroll()
{
int r;
if (rndt()<128)
givebolt ();
else
givenuke ();
}
/*=========================================*/
/* */
/* opendoor */
/* open the door with a piece at chkx,chky */
/* */
/*=========================================*/
void opendoor()
{
int x,y;
/*clears door icons both ways from the point contacted*/
PlaySound (OPENDOORSND);
x=chkx;
y=chky;
if (chkspot==165)
{ /*vertical doors*/
do
{
view[y][x]=blankfloor;
background[y][x]=blankfloor;
y--;
} while (view[y][x]==165);
y=chky+1;
while (view[y][x]==165)
{
view[y][x]=blankfloor;
background[y][x]=blankfloor;
y++;
}
}
else
{ /*horizontal doors*/
do
{
view[y][x]=blankfloor;
background[y][x]=blankfloor;
x--;
} while (view[y][x]==166);
x=chkx+1;
while (view[y][x]==166)
{
view[y][x]=blankfloor;
background[y][x]=blankfloor;
x++;
};
}
}
/****************************************************************************/
/*======================================*/
/* */
/* tagobject */
/* have the obj do its damage to altobj */
/* */
/*======================================*/
void tagobject ()
{
int i=altobj.hp;
if ((GODMODE) && (altobj.class == player))
return;
altobj.hp -= obj.damage;
if (i<=obj.damage)
/*it died*/
{
/* erasealtobj; */ /*because dead has lower priority*/
if (altobj.class == player)
{
altobj.hp = o[0].hp = 0;
printbody();
PlaySound (KILLPLAYERSND);
playdone=true; /*gameover by way of death*/
gamexit=killed;
}
else
{
score=score+altobj.points; /*give player points for a kill*/
printscore();
PlaySound (KILLMONSND);
}
/*change class to a deadthing of same size*/
o[altnum].class=(classtype)(dead1-1+altobj.size);
o[altnum].delay=2;
o[altnum].stage=0; /*start of fade*/
}
else
/*wasn't killed*/
{
if ( o[altnum].class == guns || o[altnum].class == gune )
return;
o[altnum].hp=altobj.hp; /*save the new hp status*/
o[altnum].stage=3; /*set it to ouch stage*/
if (altnum==0)
{
o[0].delay=2;
printbody(); /*update body bar on screen*/
PlaySound (TAGPLAYERSND);
}
else
{
o[altnum].delay=4; /*four frames for monsters*/
PlaySound (TAGMONSND);
}
}
}
/*==============================*/
/* */
/* intomonster */
/* obj contacted another object */
/* */
/*==============================*/
boolean intomonster()
{
int i;
boolean gotit;
/*figure out which object got hit*/
altnum=0;
gotit=false;
do
{
/* make a copy of the objects info into a global varriable */
memcpy (&altobj.active,&o[altnum],sizeof(o[altnum]) );
if ( (altobj.class>nothing) && (altnum!=objecton) )
{
memcpy (&altobj.think,&objdef[altobj.class],sizeof(objdef[altobj.class]) );
if ( (chkx>=altobj.x) && (chkx-altobj.x<altobj.size)
&& (chky>=altobj.y) && (chky-altobj.y<altobj.size) )
if (altobj.solid)
gotit=true;
else
if ( (objecton==0) && (altobj.class==teleporter || altobj.class==secretgate) )
/*player got to the teleporter*/
levelcleared();
}
if (!gotit)
altnum++;
} while (!(gotit || altnum>numobj) );
if (!gotit)
return true;
/*resolve contact based on attacker and target*/
switch (obj.contact)
{
case benign:
return false; /*benign objects just don't move through others*/
case monster:
case mshot:
if (altnum==0)
{
tagobject();
obj.stage=2; /*set it to attack stage*/
obj.delay=20; /*delay for several frames*/
}
else
if (altobj.class==shot) /*they can walk into shots*/
return true;
return false;
case pshot:
if (altnum>0)
tagobject();
return false;
case nukeshot:
tagobject();
return true; /*nuke shots keep going*/
}
return false;
}
/*=======================================*/
/* */
/* walkthrough */
/* obj is trying to walk through chkspot */
/* at chkx,chky, is it ok? */
/* */
/*=======================================*/
boolean walkthrough()
{
int new;
if (chkspot ==blankfloor)
return true;
/* big object */
if (chkspot>=tile2s && chkspot<=lasttile)
return intomonster();
/* walls */
if (chkspot>=129 && chkspot<=135)
{
if ( (obj.contact==pshot) || (obj.contact==nukeshot) || (obj.contact==mshot) )
/*make an explosion over the wall*/
{
new = newobject();
o[new].active=true;
o[new].x=chkx;
o[new].y=chky;
o[new].stage=0;
o[new].delay=2;
o[new].class=wallhit;
PlaySound (TAGWALLSND);
}
return false;
}
/* exploding walls */
if (chkspot>=136 && chkspot<=145)
{
if ((obj.contact==pshot) || (obj.contact==nukeshot))
{
PlaySound (TAGWALLSND);
if (chkspot<143)
background[chky][chkx]=blankfloor;
else
background[chky][chkx]=chkspot+19;
/*hidden potion,scroll,key*/
/*make an explosion over the wall*/
new = newobject();
o[new].active=true;
o[new].x=chkx;
o[new].y=chky;
o[new].stage=0;
o[new].delay=2;
o[new].class=dead1;
if (obj.contact==pshot)
return false;
else
return true; /*nuke shots keep going after blowing up one*/
}
else
return false; /*nothing else goes through exploding walls*/
}
/* potion bottle */
if (chkspot==162)
{
if (obj.class==player)
{
givepotion();
view[chky][chkx]=blankfloor; /*erase icon*/
background[chky][chkx]=blankfloor;
PlaySound(ITEMSND);
}
return true; /*everything but player just walks over it*/
}
/*scroll*/
if (chkspot==163)
{
if (obj.class==player)
{
givescroll();
view[chky][chkx]=blankfloor; /*erase icon*/
background[chky][chkx]=blankfloor;
PlaySound(ITEMSND);
}
return true; /*everything but player just walks over it*/
}
/* key */
if (chkspot==164)
{
if (obj.class==player)
{
givekey();
view[chky][chkx]=blankfloor; /*erase icon*/
background[chky][chkx]=blankfloor;
PlaySound(ITEMSND);
}
return true; /*everything but player just walks over it*/
}
/* doors */
if (chkspot==165 || chkspot==166)
{
if (obj.class==player)
{
if (takekey())
{
opendoor();
return true;
}
}
return false; /*blocks everything else*/
}
/* treasure chest */
if (chkspot==167)
{
if (obj.class==player)
{
score+=500;
printscore();
background[chky][chkx]=blankfloor;
view[chky][chkx]=blankfloor;
PlaySound(TREASURESND);
}
return true; /*everything but player just walks over it*/
}
/* blowing up walls */
if (chkspot>=29 && chkspot<=31)
return true;
return false;
}
/*==========================================*/
/* */
/* walk */
/* tries to move the object forward. if it */
/* touches another object, contact will be */
/* resolved based on contact. returns a */
/* true / false whether the move is ok */
/* */
/*==========================================*/
boolean walk (void)
{
int i,size,newx,newy,deltay,deltax;
boolean try;
switch (obj.dir)
{
case north: {
newx=obj.x;
newy=obj.y-1;
chkx=newx;
chky=newy;
deltax=1;
deltay=0;
break;
}
case east : {
newx=obj.x+1;
newy=obj.y;
chkx=obj.x+obj.size;
chky=newy;
deltax=0;
deltay=1;
break;
}
case south: {
newx=obj.x;
newy=obj.y+1;
chkx=newx;
chky=obj.y+obj.size;
deltax=1;
deltay=0;
break;
}
case west : {
newx=obj.x-1;
newy=obj.y;
chkx=newx;
chky=newy;
deltax=0;
deltay=1;
break;
}
default: return (false); /*should never happen*/
}
for (i=1;i<=obj.size;i++)
{
chkspot=view[chky][chkx];
if (chkspot!=blankfloor)
{
try=walkthrough();
if (leveldone) /*player hit the teleporter*/
return(true);
if (obj.stage==2) /*if they attacked something, its good*/
return(true);
if (!try) /*ran into something that's not ok*/
return(false);
}
chkx=chkx+deltax;
chky=chky+deltay;
}
obj.x=newx;
obj.y=newy;
obj.stage ^= 1; /*toggle walking frame*/
return (true);
}
/****************************************************************************/
/*================*/
/* */
/* playercmdthink */
/* */
/*================*/
void playercmdthink(void)
{
dirtype olddir;
ControlStruct c;
c=ControlPlayer (1); /*see what the input device is doing*/
obj.stage=obj.stage & 1; /*cancle attack or damaged stage*/
/* cheat key... */
if (c.button1 && c.button2 && keydown[0x10]) /*'q' + b1 + b2*/
{
givepotion();
givescroll();
givekey();
}
/* */
/* carry out the action */
/* */
if (c.dir<nodir && frameon%2)
{
if (c.button2) /*if button 2 is down, the move will not*/
olddir=obj.dir; /*change the direction of the figure (strafe)*/
if (c.dir>west)
{
if ((frameon/2)%2)
switch (c.dir)
{
case northeast:
obj.dir = east;
walk();
c.dir = north;
break;
case southeast:
obj.dir = south;
walk();
c.dir = east;
break;
case southwest:
obj.dir = west;
walk();
c.dir = south;
break;
case northwest:
obj.dir = north;
walk();
c.dir = west;
break;
}
else
switch (c.dir)
{
case northeast:
obj.dir = north;
walk();
c.dir = east;
break;
case southeast:
obj.dir = east;
walk();
c.dir = south;
break;
case southwest:
obj.dir = south;
walk();
c.dir = west;
break;
case northwest:
obj.dir = west;
walk();
c.dir = north;
break;
}
}
obj.dir=c.dir; /*set new direction*/
if (!walk())
PlaySound (BLOCKEDSND);
if (c.button2)
obj.dir=olddir; /*restore original direction*/
}
else
if (!c.button2)
switch (c.dir)
{
case northwest:
case north:
obj.dir = north;
break;
case northeast:
case east:
obj.dir = east;
break;
case southeast:
case south:
obj.dir = south;
break;
case southwest:
case west:
obj.dir = west;
break;
}
/* move screen origin */
originx = obj.x-11;
originy = obj.y-11;
/* a bolt spell is still going off */
if (boltsleft>0)
{
if (frameon % 3==0)
{
playbigshoot(); /*let off a bigshot*/
boltsleft--;
}
}
else
/* button 1 builds shot power / shoots */
{
if (c.button1)
{
if (shotpower==0)
shotpower=1; /*give power one immediately*/
else if (shotpower<13 && frameon%2) /*give extra's only 2 frames*/
shotpower++;
printshotpower();
}
else if (shotpower>0) /*player just released the fire button*/
{
if (shotpower==13)
playbigshoot();
else
playshoot();
shotpower=0;
printshotpower();
}
}
/* */
/* keys to cast spells and drink potions */
/* */
if (!indemo)
{
if (keydown [0x19] || keydown [0x39]) /*'p' or ' ' keys*/
{
if (obj.hp<13) /*don't take a potion if not needed*/
{
takepotion();
keydown [0x19]=false;
keydown [0x39]=false;