fx.c fx.h moved to repo. Added license notification

diff --git a/fx.c b/fx.c
new file mode 100755 (executable)
index 0000000..a6b3f06
--- /dev/null
+++ b/fx.c
@@ -0,0 +1,217 @@
+/*
+   Copyright (C) Prikol Software 1996-1997
+   Copyright (C) Aleksey Volynskov 1996-1997
+   Copyright (C) <ARembo@gmail.com> 2011
+
+   This file is part of the Doom2D:Rembo project.
+
+   Doom2D:Rembo is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License version 2 as
+   published by the Free Software Foundation.
+
+   Doom2D:Rembo 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, see <http://www.gnu.org/licenses/> or
+   write to the Free Software Foundation, Inc.,
+   51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+*/
+
+#include "glob.h"
+//#include <io.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "vga.h"
+#include "error.h"
+#include "view.h"
+#include "fx.h"
+#include "misc.h"
+
+enum{NONE,TFOG,IFOG,BUBL};
+
+#pragma pack(1)
+typedef struct{
+  int x,y,xv,yv;
+  char t,s;
+}fx_t;
+#pragma pack()
+
+static void *spr[15],*bsnd[2];
+static char sprd[15];
+static fx_t fx[MAXFX];
+static char bubsn;
+static int last;
+
+unsigned char fx_scr1[64000],fx_scr2[64000];
+
+#define SINP 256
+#define SINPM (SINP-1)
+#define W (SINP/100)
+
+static int stdsin[SINP]={
+#include "fx1sin.dat"
+};
+static int sintab[SINP];
+
+static unsigned char dmap[32*32];
+
+static int isin(int a) {
+  return sintab[a&SINPM];
+}
+
+static void setamp(int a) {
+  int i;
+
+  for(i=0;i<SINP;++i) sintab[i]=stdsin[i]*a;
+}
+
+void FX_trans1(int t) {
+
+  int x,y,u,v;
+  static unsigned char k;
+  unsigned p;
+
+  setamp(t);
+  k=t;
+  t*=W;
+  for(y=0,p=0;y<200;++y)
+    for(x=0;x<320;++x,++p) {
+      if(dmap[(y&31)*32+(x&31)]>=k) {
+        u=x+((isin(y+t))>>16);
+        v=y+((isin(u+t))>>16);
+        if(u<0 || u>=320 || v<0 || v>=200) scra[p]=0;
+        else scra[p]=fx_scr1[v*320+u];
+      }else scra[p]=fx_scr2[p];
+    }
+
+}
+
+static void init_fx1sin(void) {
+  int j,r,l,rr;
+  unsigned i;
+
+  memset(dmap,0,32*32);
+  for(i=1,rr=32*32;i<64;++i) {
+    for(l=32*32/64;l;--l,--rr) {
+      r=rand()%rr;
+      for(j=0;r;--r,++j) {
+        for(;dmap[j];++j);
+      }
+      for(;dmap[j];++j);
+      dmap[j]=i;
+    }
+  }
+}
+
+void FX_savegame(FILE* h) {
+  int i,n;
+
+  for(i=n=0;i<MAXFX;++i) if(fx[i].t) ++n;
+  myfwrite(&n,1,4,h);
+  for(i=0;i<MAXFX;++i) if(fx[i].t) myfwrite(&fx[i],1,sizeof(fx_t),h);
+}
+
+void FX_loadgame(FILE* h) {
+  int n;
+
+  myfread(&n,1,4,h);
+  myfread(fx,1,n*sizeof(fx_t),h);
+}
+
+void FX_alloc(void) {
+  int i;
+
+  for(i=0;i<10;++i) spr[i]=Z_getspr("TFOG",i,0,sprd+i);
+  for(;i<15;++i) spr[i]=Z_getspr("IFOG",i-10,0,sprd+i);
+  bsnd[0]=Z_getsnd("BUBL1");
+  bsnd[1]=Z_getsnd("BUBL2");
+  init_fx1sin();
+}
+
+void FX_init(void) {
+  int i;
+
+  for(i=0;i<MAXFX;++i) fx[i].t=0;
+  bubsn=0;
+  last=0;
+}
+
+void FX_act(void) {
+  int i;
+  byte b;
+
+  bubsn=0;
+  for(i=0;i<MAXFX;++i) switch(fx[i].t) {
+    case TFOG:
+      if(++fx[i].s>=20) fx[i].t=0;
+      break;
+    case IFOG:
+      if(++fx[i].s>=10) fx[i].t=0;
+      break;
+    case BUBL:
+      fx[i].yv-=5;
+      fx[i].xv=Z_dec(fx[i].xv,20);
+      fx[i].x+=fx[i].xv;
+      fx[i].y+=fx[i].yv;
+      if((b=fld[fx[i].y>>11][fx[i].x>>11]) < 5 || b>7) fx[i].t=0;
+      break;
+  }
+}
+
+void FX_draw(void) {
+  int i,s;
+
+  for(i=0;i<MAXFX;++i) {
+    s=-1;
+    switch(fx[i].t) {
+      case TFOG: s=fx[i].s/2;break;
+         case IFOG: s=fx[i].s/2+10;break;
+         case BUBL:
+               V_dot((fx[i].x>>8)-w_x+WD/2,(fx[i].y>>8)-w_y+HT/2+1+w_o,0xC0+fx[i].s);//V_dot((fx[i].x>>8)-w_x+100,(fx[i].y>>8)-w_y+50+w_o,0xC0+fx[i].s);
+               continue;
+    }
+    if(s>=0) Z_drawspr(fx[i].x,fx[i].y,spr[s],sprd[s]);
+  }
+}
+
+static int findfree(void) {
+  int i;
+
+  for(i=0;i<MAXFX;++i) if(!fx[i].t) return i;
+  for(i=0;i<MAXFX;++i) if(fx[i].t==IFOG) return i;
+  if(++last>=MAXFX) last=0;
+  return last;
+}
+
+void FX_tfog(int x,int y) {
+  int i;
+
+  i=findfree();
+       fx[i].t=TFOG;fx[i].s=0;
+       fx[i].x=x;fx[i].y=y;
+}
+
+void FX_ifog(int x,int y) {
+  int i;
+
+  i=findfree();
+    fx[i].t=IFOG;fx[i].s=0;
+    fx[i].x=x;fx[i].y=y;
+}
+
+void FX_bubble(int x,int y,int xv,int yv,int n) {
+  int i;
+
+  if(!bubsn) {Z_sound(bsnd[rand()&1],128);bubsn=1;}
+  for(;n>0;--n) {
+       i=findfree();
+       fx[i].t=BUBL;fx[i].s=rand()&3;
+       fx[i].x=(x<<8)+myrand(513)-256;fx[i].y=(y<<8)+myrand(513)-256;
+       fx[i].xv=xv;fx[i].yv=yv-myrand(256)-768;
+  }
+}
+

diff --git a/fx.h b/fx.h
new file mode 100755 (executable)
index 0000000..784844a
--- /dev/null
+++ b/fx.h
@@ -0,0 +1,33 @@
+/*
+   Copyright (C) Prikol Software 1996-1997
+   Copyright (C) Aleksey Volynskov 1996-1997
+   Copyright (C) <ARembo@gmail.com> 2011
+
+   This file is part of the Doom2D:Rembo project.
+
+   Doom2D:Rembo is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License version 2 as
+   published by the Free Software Foundation.
+
+   Doom2D:Rembo 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, see <http://www.gnu.org/licenses/> or
+   write to the Free Software Foundation, Inc.,
+   51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+*/
+
+// Effects
+
+#define MAXFX 300
+
+void FX_init(void);
+void FX_alloc(void);
+void FX_act(void);
+void FX_draw(void);
+void FX_tfog(int,int);
+void FX_ifog(int,int);
+void FX_bubble(int x,int y,int xv,int yv,int n);