From: Ketmar Dark <ketmar@ketmar.no-ip.org>
Date: Thu, 24 Aug 2017 18:25:04 +0000 (+0300)
Subject: removed unused code; optimized horizontal and vertical traces should work (i hope)
X-Git-Url: https://deadsoftware.ru/gitweb?a=commitdiff_plain;h=00108962d2ec807119413ff0a5fbd48d712168e1;p=d2df-sdl.git

removed unused code; optimized horizontal and vertical traces should work (i hope)
---

diff --git a/src/game/g_grid.pas b/src/game/g_grid.pas
index 354c3c1..153e6fa 100644
--- a/src/game/g_grid.pas
+++ b/src/game/g_grid.pas
@@ -87,10 +87,6 @@ type
     mProxyCount: Integer; // currently used
     mProxyMaxCount: Integer;
 
-  private
-    // optimized horizontal tracer
-    //function traceRayHOpt (out ex, ey: Integer; const ax0, ay0, ax1, ay1, x0, len, dx: Integer; cb: TGridRayQueryCB; tagmask: Integer): ITP;
-
   public
     dbgShowTraceLog: Boolean;
     {$IF DEFINED(D2F_DEBUG)}
@@ -155,8 +151,8 @@ type
     function traceRay (const x0, y0, x1, y1: Integer; cb: TGridRayQueryCB; tagmask: Integer=-1): ITP; overload;
     function traceRay (out ex, ey: Integer; const ax0, ay0, ax1, ay1: Integer; cb: TGridRayQueryCB; tagmask: Integer=-1): ITP;
 
-    //function traceRayWhileIn (const x0, y0, x1, y1: Integer; tagmask: Integer=-1): ITP; overload;
-    //function traceRayWhileIn (out ex, ey: Integer; const ax0, ay0, ax1, ay1: Integer; tagmask: Integer=-1): ITP;
+    //function traceOrthoRayWhileIn (const x0, y0, x1, y1: Integer; tagmask: Integer=-1): ITP; overload;
+    //function traceOrthoRayWhileIn (out ex, ey: Integer; const ax0, ay0, ax1, ay1: Integer; tagmask: Integer=-1): ITP;
 
     //WARNING: don't modify grid while any query is in progress (no checks are made!)
     //         you can set enabled/disabled flag, tho (but iterator can still return objects disabled inside it)
@@ -2091,324 +2087,4 @@ begin
 end;
 
 
-// ////////////////////////////////////////////////////////////////////////// //
-(*
-function TBodyGridBase.traceRayWhileIn (const x0, y0, x1, y1: Integer; tagmask: Integer=-1): ITP; overload;
-var
-  ex, ey: Integer;
-begin
-  result := traceRayWhileIn(ex, ey, x0, y0, x1, y1, tagmask);
-end;
-
-
-// FUCKIN' PASTA!
-function TBodyGridBase.traceRayWhileIn (out ex, ey: Integer; const ax0, ay0, ax1, ay1: Integer; tagmask: Integer=-1): ITP;
-const
-  tsize = mTileSize;
-var
-  wx0, wy0, wx1, wy1: Integer; // window coordinates
-  stx, sty: Integer; // "steps" for x and y axes
-  dsx, dsy: Integer; // "lengthes" for x and y axes
-  dx2, dy2: Integer; // "double lengthes" for x and y axes
-  xd, yd: Integer; // current coord
-  e: Integer; // "error" (as in bresenham algo)
-  rem: Integer;
-  term: Integer;
-  xptr, yptr: PInteger;
-  xfixed: Boolean;
-  temp: Integer;
-  prevx, prevy: Integer;
-  lastDistSq: Integer;
-  ccidx, curci: Integer;
-  hasUntried: Boolean;
-  lastGA: Integer = -1;
-  ga, x, y: Integer;
-  lastObj: ITP;
-  wasHit: Boolean = false;
-  gw, gh, minx, miny, maxx, maxy: Integer;
-  cc: PGridCell;
-  px: PBodyProxyRec;
-  lq: LongWord;
-  f, ptag, distSq: Integer;
-  x0, y0, x1, y1: Integer;
-  inx, iny: Integer;
-begin
-  result := Default(ITP);
-  lastObj := Default(ITP);
-  tagmask := tagmask and TagFullMask;
-  ex := ax1; // why not?
-  ey := ay1; // why not?
-  if (tagmask = 0) then exit;
-
-  if (ax0 = ax1) and (ay0 = ay1) then exit; // doesn't matter
-
-  // we should start inside
-  if (forEachAtPoint(ax0, ay0, nil, tagmask, @ptag) = nil) then
-  begin
-    ex := ax0; // why not?
-    ey := ay0; // why not?
-    exit;
-  end;
-
-  lastDistSq := distanceSq(ax0, ay0, ax1, ay1)+1;
-
-  gw := mWidth;
-  gh := mHeight;
-  minx := mMinX;
-  miny := mMinY;
-  maxx := gw*tsize-1;
-  maxy := gh*tsize-1;
-
-  x0 := ax0;
-  y0 := ay0;
-  x1 := ax1;
-  y1 := ay1;
-
-  // offset query coords to (0,0)-based
-  Dec(x0, minx);
-  Dec(y0, miny);
-  Dec(x1, minx);
-  Dec(y1, miny);
-
-  // clip rectange
-  wx0 := 0;
-  wy0 := 0;
-  wx1 := maxx;
-  wy1 := maxy;
-
-  // horizontal setup
-  if (x0 < x1) then
-  begin
-    // from left to right
-    if (x0 > wx1) or (x1 < wx0) then exit; // out of screen
-    stx := 1; // going right
-  end
-  else
-  begin
-    // from right to left
-    if (x1 > wx1) or (x0 < wx0) then exit; // out of screen
-    stx := -1; // going left
-    x0 := -x0;
-    x1 := -x1;
-    wx0 := -wx0;
-    wx1 := -wx1;
-    swapInt(wx0, wx1);
-  end;
-
-  // vertical setup
-  if (y0 < y1) then
-  begin
-    // from top to bottom
-    if (y0 > wy1) or (y1 < wy0) then exit; // out of screen
-    sty := 1; // going down
-  end
-  else
-  begin
-    // from bottom to top
-    if (y1 > wy1) or (y0 < wy0) then exit; // out of screen
-    sty := -1; // going up
-    y0 := -y0;
-    y1 := -y1;
-    wy0 := -wy0;
-    wy1 := -wy1;
-    swapInt(wy0, wy1);
-  end;
-
-  dsx := x1-x0;
-  dsy := y1-y0;
-
-  if (dsx < dsy) then
-  begin
-    xptr := @yd;
-    yptr := @xd;
-    swapInt(x0, y0);
-    swapInt(x1, y1);
-    swapInt(dsx, dsy);
-    swapInt(wx0, wy0);
-    swapInt(wx1, wy1);
-    swapInt(stx, sty);
-  end
-  else
-  begin
-    xptr := @xd;
-    yptr := @yd;
-  end;
-
-  dx2 := 2*dsx;
-  dy2 := 2*dsy;
-  xd := x0;
-  yd := y0;
-  e := 2*dsy-dsx;
-  term := x1;
-
-  xfixed := false;
-  if (y0 < wy0) then
-  begin
-    // clip at top
-    temp := dx2*(wy0-y0)-dsx;
-    xd += temp div dy2;
-    rem := temp mod dy2;
-    if (xd > wx1) then exit; // x is moved out of clipping rect, nothing to do
-    if (xd+1 >= wx0) then
-    begin
-      yd := wy0;
-      e -= rem+dsx;
-      if (rem > 0) then begin Inc(xd); e += dy2; end;
-      xfixed := true;
-    end;
-  end;
-
-  if (not xfixed) and (x0 < wx0) then
-  begin
-    // clip at left
-    temp := dy2*(wx0-x0);
-    yd += temp div dx2;
-    rem := temp mod dx2;
-    if (yd > wy1) or (yd = wy1) and (rem >= dsx) then exit;
-    xd := wx0;
-    e += rem;
-    if (rem >= dsx) then begin Inc(yd); e -= dx2; end;
-  end;
-
-  if (y1 > wy1) then
-  begin
-    // clip at bottom
-    temp := dx2*(wy1-y0)+dsx;
-    term := x0+temp div dy2;
-    rem := temp mod dy2;
-    if (rem = 0) then Dec(term);
-  end;
-
-  if (term > wx1) then term := wx1; // clip at right
-
-  Inc(term); // draw last point
-  //if (term = xd) then exit; // this is the only point, get out of here
-
-  if (sty = -1) then yd := -yd;
-  if (stx = -1) then begin xd := -xd; term := -term; end;
-  dx2 -= dy2;
-
-  // first move, to skip starting point
-  // DON'T DO THIS! loop will take care of that
-  if (xd = term) then
-  begin
-    result := forEachAtPoint(ax0, ay0, nil, tagmask, @ptag);
-    if (result <> nil) and ((ptag and tagmask) <> 0) then result := nil;
-    exit;
-  end;
-
-  prevx := xptr^+minx;
-  prevy := yptr^+miny;
-
-  // increase query counter
-  Inc(mLastQuery);
-  if (mLastQuery = 0) then
-  begin
-    // just in case of overflow
-    mLastQuery := 1;
-    for f := 0 to High(mProxies) do mProxies[f].mQueryMark := 0;
-  end;
-  lq := mLastQuery;
-
-  ccidx := -1;
-  // draw it; can omit checks
-  while (xd <> term) do
-  begin
-    // check cell(s)
-    // new tile?
-    ga := (yptr^ div tsize)*gw+(xptr^ div tsize);
-    if (ga <> lastGA) then
-    begin
-      // yes
-      lastGA := ga;
-      ccidx := mGrid[lastGA];
-      // no objects in cell == exit
-      if (ccidx = -1) then exit;
-    end;
-    // has something to process in this tile?
-    if (ccidx <> -1) then
-    begin
-      // process cell
-      curci := ccidx;
-      // convert coords to map (to avoid ajdusting coords inside the loop)
-      x := xptr^+minx;
-      y := yptr^+miny;
-      wasHit := false;
-      // process cell list
-      while (curci <> -1) do
-      begin
-        cc := @mCells[curci];
-        for f := 0 to GridCellBucketSize-1 do
-        begin
-          if (cc.bodies[f] = -1) then break;
-          px := @mProxies[cc.bodies[f]];
-          ptag := px.mTag;
-          if ((ptag and TagDisabled) = 0) and (px.mQueryMark <> lq) then
-          begin
-function lineAABBIntersects (x0, y0, x1, y1: Integer; bx, by, bw, bh: Integer; out inx, iny: Integer): Boolean;
-            // can we process this proxy?
-            if (x >= px.mX) and (y >= px.mY) and (x < px.mX+px.mWidth) and (y < px.mY+px.mHeight) then
-            begin
-              px.mQueryMark := lq; // mark as processed
-              if ((ptag and tagmask) = 0) then
-              begin
-                result := px.mObj;
-                ex := x;
-                ey := y;
-                exit;
-              end;
-              // march out of the panel/cell
-              while (xd <> term) do
-              begin
-                if (e >= 0) then begin yd += sty; e -= dx2; end else e += dy2;
-                xd += stx;
-                // new cell?
-                ga := (yptr^ div tsize)*gw+(xptr^ div tsize);
-                if (ga <> lastGA) then break;
-                // out of panel?
-                if not ((x >= px.mX) and (y >= px.mY) and (x < px.mX+px.mWidth) and (y < px.mY+px.mHeight)) then break;
-              end;
-            end;
-          end;
-        end;
-        // next cell
-        curci := cc.next;
-      end;
-      // still has something interesting in this cell?
-      if not hasUntried then
-      begin
-        // nope, don't process this cell anymore; signal cell completion
-        ccidx := -1;
-        if assigned(cb) then
-        begin
-          if cb(nil, 0, x, y, prevx, prevy) then begin result := lastObj; exit; end;
-        end
-        else if wasHit then
-        begin
-          result := lastObj;
-          exit;
-        end;
-      end;
-    end;
-    //putPixel(xptr^, yptr^);
-    // move coords
-    prevx := xptr^+minx;
-    prevy := yptr^+miny;
-    if (e >= 0) then begin yd += sty; e -= dx2; end else e += dy2;
-    xd += stx;
-  end;
-  // we can travel less than one cell
-  if wasHit and not assigned(cb) then
-  begin
-    result := lastObj;
-  end
-  else
-  begin
-    ex := ax1; // why not?
-    ey := ay1; // why not?
-  end;
-end;
-*)
-
-
 end.