summary | shortlog | log | commit | commitdiff | tree
raw | patch | inline | side by side (parent: 07b4a1c)
raw | patch | inline | side by side (parent: 07b4a1c)
| author | Ketmar Dark <ketmar@ketmar.no-ip.org> | |
| Fri, 1 Sep 2017 07:46:21 +0000 (10:46 +0300) | ||
| committer | Ketmar Dark <ketmar@ketmar.no-ip.org> | |
| Fri, 1 Sep 2017 07:46:57 +0000 (10:46 +0300) |
particles won't trace vertical movement if they are on a ground, and trying to move down
| src/game/g_gfx.pas | patch | blob | history | |
| src/game/g_grid.pas | patch | blob | history |
diff --git a/src/game/g_gfx.pas b/src/game/g_gfx.pas
index 6ce5a66da7847fac8d4184d7b7908784c5503c5a..fc00d5855ae5c89d639250cf9c587d8c498df246 100644 (file)
--- a/src/game/g_gfx.pas
+++ b/src/game/g_gfx.pas
uses
g_map, g_panel, g_basic, Math, e_graphics, GL, GLExt,
g_options, g_console, SysUtils, g_triggers, MAPDEF,
- g_game, g_language, g_net;
+ g_game, g_language, g_net, xprofiler;
type
PParticle = ^TParticle;
liquidTopY: Integer; // don't float higher than this
// for water
stickDX: Integer;
+ // for blood
+ justSticked: Boolean;
+ stickEY: Integer;
+ // for all
+ onGround: Boolean;
+ awaken: Boolean;
//k8: sorry, i have to emulate virtual methods this way, 'cause i haet `Object`
procedure g_Mark(x, y, Width, Height: Integer; t: Byte; st: Boolean);
{$IF not DEFINED(HAS_COLLIDE_BITMAP)}
+var
+ part: PParticle;
+ f: Integer;
begin
+ for f := 0 to High(Particles) do
+ begin
+ part := @Particles[f];
+ if part.alive and (part.onGround or (not part.justSticked and (part.State = STATE_STICK))) and
+ (part.X >= x-2) and (part.Y >= y-2) and (part.X < x+Width+4) and (part.Y < y+Height+4) then
+ begin
+ // wakup this particle
+ {
+ if (part.ParticleType = PARTICLE_SPARK) then
+ begin
+ e_LogWritefln('waking up particle of type %s; justSticked=%s; onGround=%s; VelY=%s; AccelY=%s', [part.ParticleType, part.justSticked, part.onGround, part.VelY, part.AccelY]);
+ end;
+ }
+ part.justSticked := true; // so sticked state will be re-evaluated
+ if part.onGround then
+ begin
+ if (part.VelY = 0) then part.VelY := 0.1;
+ if (part.AccelY = 0) then part.AccelY := 0.5;
+ end;
+ part.onGround := false; // so onground state will be re-evaluated
+ part.awaken := true;
+ end;
+ end;
end;
{$ELSE}
var
(not isBlockedAt(X-1, Y)) and
(not isBlockedAt(X+1, Y))
{$ELSE}
- if not g_Map_CollidePanel(X-1, Y-1, 3, 3, (PANEL_STEP or PANEL_WALL or PANEL_OPENDOOR or PANEL_CLOSEDOOR))
+ if justSticked then
+ begin
+ if not mapGrid.traceOrthoRayWhileIn(ex, ey, X+stickDX, Y, X+stickDX, mapGrid.gridY0+mapGrid.gridHeight, GridTagWall or GridTagDoor or GridTagStep) then
+ begin
+ // îòëèïëà
+ State := STATE_NORMAL;
+ //e_LogWritefln('juststicked unsticked: X=%s; X+stickDX=%s; stickDX=%s; Y=%s', [X, X+stickDX, stickDX, Y]);
+ end
+ else
+ begin
+ stickEY := ey+1;
+ if (nil <> g_Map_traceToNearest(X, Y, X, stickEY, (GridTagWall or GridTagDoor or GridTagStep or GridTagAcid1 or GridTagAcid2 or GridTagWater), @ex, @ey)) then
+ begin
+ if (ey > stickEY) then stickEY := ey-1;
+ end;
+ justSticked := false;
+ //e_LogWritefln('juststicked: X=%s; X+stickDX=%s; stickDX=%s; Y=%s; stickEY=%s', [X, X+stickDX, stickDX, Y, stickEY]);
+ end;
+ end;
+ if (State <> STATE_STICK) or (Y >= stickEY)
+ //if not g_Map_CollidePanel(X-1, Y-1, 3, 3, (PANEL_STEP or PANEL_WALL or PANEL_OPENDOOR or PANEL_CLOSEDOOR))
{$ENDIF}
then
begin // Îòëèïëà - êàïàåò
AccelX := 0;
AccelY := 0;
State := STATE_STICK;
+ justSticked := true;
if (dX > 0) then stickDX := 1 else stickDX := -1;
end;
if (X < 0) or (X >= w) then begin die(); exit; end;
// vertical
if (dY <> 0) then
begin
- pan := g_Map_traceToNearest(X, Y, X, Y+dY, (GridTagWall or GridTagDoor or GridTagStep), @ex, @ey);
- Y := ey;
- // free to ride?
- if (pan <> nil) then
+ if (dY < 0) or not onGround then
begin
- // Ñòåíà/äâåðü
- VelX := 0;
- VelY := 0;
- AccelX := 0;
- AccelY := 0;
- if (dY > 0) and (State <> STATE_STICK) then
+ pan := g_Map_traceToNearest(X, Y, X, Y+dY, (GridTagWall or GridTagDoor or GridTagStep), @ex, @ey);
+ Y := ey;
+ // free to ride?
+ if (pan <> nil) then
begin
- State := STATE_NORMAL;
- end
- else
- begin
- State := STATE_STICK;
- if (g_Map_PanelAtPoint(X-1, Y, (GridTagWall or GridTagDoor or GridTagStep)) <> nil) then stickDX := -1
- else if (g_Map_PanelAtPoint(X+1, Y, (GridTagWall or GridTagDoor or GridTagStep)) <> nil) then stickDX := 1
- else stickDX := 0;
+ // Ñòåíà/äâåðü
+ VelX := 0;
+ VelY := 0;
+ AccelX := 0;
+ AccelY := 0;
+ if (dY > 0) and (State <> STATE_STICK) then
+ begin
+ State := STATE_NORMAL;
+ end
+ else
+ begin
+ State := STATE_STICK;
+ if (g_Map_PanelAtPoint(X-1, Y, (GridTagWall or GridTagDoor or GridTagStep)) <> nil) then stickDX := -1
+ else if (g_Map_PanelAtPoint(X+1, Y, (GridTagWall or GridTagDoor or GridTagStep)) <> nil) then stickDX := 1
+ else stickDX := 0;
+ justSticked := true;
+ end;
end;
+ onGround := (VelY >= 0) and g_Map_HasAnyPanelAtPoint(X, Y+1, (PANEL_WALL or PANEL_CLOSEDOOR or PANEL_STEP));
end;
if (Y < 0) or (Y >= h) then begin die(); exit; end;
end;
AccelX := 0;
AccelY := 0;
State := STATE_STICK;
+ justSticked := true;
break;
end;
X := X+s;
AccelX := 0;
AccelY := 0;
if (s > 0) and (State <> STATE_STICK) then State := STATE_NORMAL else State := STATE_STICK;
+ justSticked := (State = STATE_STICK);
break;
end;
Y := Y+s;
end
else
begin
- if (g_Map_PanelAtPoint(X+stickDX, Y, (GridTagWall or GridTagDoor or GridTagStep)) = nil) then State := STATE_NORMAL;
+ if justSticked then
+ begin
+ if not mapGrid.traceOrthoRayWhileIn(ex, ey, X+stickDX, Y, X+stickDX, mapGrid.gridY0+mapGrid.gridHeight, GridTagWall or GridTagDoor or GridTagStep) then
+ begin
+ // îòëèïëà
+ State := STATE_NORMAL;
+ //e_LogWritefln('juststicked unsticked: X=%s; X+stickDX=%s; stickDX=%s; Y=%s', [X, X+stickDX, stickDX, Y]);
+ end
+ else
+ begin
+ stickEY := ey+1;
+ justSticked := false;
+ if (nil <> g_Map_traceToNearest(X, Y, X, stickEY, (GridTagWall or GridTagDoor or GridTagStep or GridTagAcid1 or GridTagAcid2 or GridTagWater), @ex, @ey)) then
+ begin
+ if (ey > stickEY) then stickEY := ey-1;
+ end;
+ //e_LogWritefln('juststicked: X=%s; X+stickDX=%s; stickDX=%s; Y=%s; stickEY=%s', [X, X+stickDX, stickDX, Y, stickEY]);
+ end;
+ end
+ else
+ begin
+ if (Y >= stickEY) then State := STATE_NORMAL;
+ end;
+ //if not g_Map_CollidePanel(X-1, Y-1, 3, 3, (PANEL_STEP or PANEL_WALL or PANEL_OPENDOOR or PANEL_CLOSEDOOR))
end;
{$ENDIF}
exit;
AccelX := 0;
AccelY := 0;
State := STATE_STICK;
+ justSticked := true;
if (dX > 0) then stickDX := 1 else stickDX := -1;
end;
end;
// vertical
if (dY <> 0) then
begin
- pan := g_Map_traceToNearest(X, Y, X, Y+dY, (GridTagWall or GridTagDoor or GridTagStep or GridTagAcid1 or GridTagAcid2 or GridTagWater), @ex, @ey);
- Y := ey;
- // free to ride?
- if (pan <> nil) then
+ if (dY < 0) or not onGround then
begin
- // nope
- if (dY > 0) and ((pan.tag and (GridTagAcid1 or GridTagAcid2 or GridTagWater)) <> 0) then begin die(); exit; end;
- // Ñòåíà/äâåðü?
- if ((pan.tag and (GridTagWall or GridTagDoor or GridTagStep)) <> 0) then
+ pan := g_Map_traceToNearest(X, Y, X, Y+dY, (GridTagWall or GridTagDoor or GridTagStep or GridTagAcid1 or GridTagAcid2 or GridTagWater), @ex, @ey);
+ Y := ey;
+ // free to ride?
+ if (pan <> nil) then
begin
- VelX := 0;
- VelY := 0;
- AccelX := 0;
- AccelY := 0;
- if (dY > 0) and (State <> STATE_STICK) then
- begin
- State := STATE_NORMAL;
- end
- else
+ // nope
+ if (dY > 0) and ((pan.tag and (GridTagAcid1 or GridTagAcid2 or GridTagWater)) <> 0) then begin die(); exit; end;
+ // Ñòåíà/äâåðü?
+ if ((pan.tag and (GridTagWall or GridTagDoor or GridTagStep)) <> 0) then
begin
- State := STATE_STICK;
- if (g_Map_PanelAtPoint(X-1, Y, (GridTagWall or GridTagDoor or GridTagStep)) <> nil) then stickDX := -1
- else if (g_Map_PanelAtPoint(X+1, Y, (GridTagWall or GridTagDoor or GridTagStep)) <> nil) then stickDX := 1
- else stickDX := 0;
+ VelX := 0;
+ VelY := 0;
+ AccelX := 0;
+ AccelY := 0;
+ if (dY > 0) and (State <> STATE_STICK) then
+ begin
+ State := STATE_NORMAL;
+ end
+ else
+ begin
+ State := STATE_STICK;
+ if (g_Map_PanelAtPoint(X-1, Y, (GridTagWall or GridTagDoor or GridTagStep)) <> nil) then stickDX := -1
+ else if (g_Map_PanelAtPoint(X+1, Y, (GridTagWall or GridTagDoor or GridTagStep)) <> nil) then stickDX := 1
+ else stickDX := 0;
+ justSticked := true;
+ end;
end;
end;
+ onGround := (VelY >= 0) and g_Map_HasAnyPanelAtPoint(X, Y+1, (PANEL_WALL or PANEL_CLOSEDOOR or PANEL_STEP));
end;
if (Y < 0) or (Y >= gMapInfo.Height) then begin die(); exit; end;
end;
AccelX := 0;
AccelY := 0;
State := STATE_STICK;
+ justSticked := true;
Break;
end;
X := X+s;
AccelX := 0;
AccelY := 0;
if (s > 0) and (State <> STATE_STICK) then State := STATE_NORMAL else State := STATE_STICK;
+ justSticked := (State = STATE_STICK);
break;
end;
Y := Y+s;
if (dY <> 0) then
begin
{$IF DEFINED(D2F_NEW_SPARK_THINKER)}
- pan := g_Map_traceToNearest(X, Y, X, Y+dY, (GridTagWall or GridTagDoor or GridTagStep or GridTagAcid1 or GridTagAcid2 or GridTagWater), @ex, @ey);
- //e_WriteLog(Format('spark y-trace: (%d,%d)-(%d,%d); dy=%d; end=(%d,%d); hit=%d', [X, Y, X, Y+dY, dY, ex, ey, Integer(pan <> nil)]), MSG_NOTIFY);
- (*
- if (pan <> nil) then
+ if (dY < 0) or not onGround then
begin
- e_WriteLog(Format('spark y-trace: %08x (%d,%d)-(%d,%d); dy=%d; end=(%d,%d); hittag=%04x', [LongWord(@self), X, Y, X, Y+dY, dY, ex, ey, pan.tag]), MSG_NOTIFY);
- end
- else
- begin
- e_WriteLog(Format('spark y-trace: %08x (%d,%d)-(%d,%d); dy=%d; end=(%d,%d); hit=%d', [LongWord(@self), X, Y, X, Y+dY, dY, ex, ey, Integer(pan <> nil)]), MSG_NOTIFY);
- end;
- *)
- Y := ey;
- // free to ride?
- if (pan <> nil) then
- begin
- //die(); exit;
- // nope
- if ((pan.tag and (GridTagAcid1 or GridTagAcid2 or GridTagWater)) <> 0) then begin die(); exit; end;
- if (dY < 0) then
+ pan := g_Map_traceToNearest(X, Y, X, Y+dY, (GridTagWall or GridTagDoor or GridTagStep or GridTagAcid1 or GridTagAcid2 or GridTagWater), @ex, @ey);
+ Y := ey;
+ {
+ if awaken then
begin
- VelY := -VelY;
- AccelY := abs(AccelY);
- end
- else
+ awaken := false;
+ e_LogWritefln('AWAKEN particle of type %s; justSticked=%s; onGround=%s; VelY=%s; AccelY=%s; Y=%s; ey=%s', [ParticleType, justSticked, onGround, VelY, AccelY, Y, ey]);
+ end;
+ }
+ // free to ride?
+ if (pan <> nil) then
begin
- VelX := 0;
- AccelX := 0;
- VelY := 0;
- AccelY := 0.8;
+ // nope
+ if ((pan.tag and (GridTagAcid1 or GridTagAcid2 or GridTagWater)) <> 0) then begin die(); exit; end;
+ if (dY < 0) then
+ begin
+ VelY := -VelY;
+ AccelY := abs(AccelY);
+ end
+ else
+ begin
+ VelX := 0;
+ AccelX := 0;
+ VelY := 0;
+ AccelY := 0.8;
+ end;
end;
+ onGround := (VelY >= 0) and g_Map_HasAnyPanelAtPoint(X, Y+1, (PANEL_WALL or PANEL_CLOSEDOOR or PANEL_STEP));
end;
if (Y < 0) or (Y >= gMapInfo.Height) then begin die(); exit; end;
{$ELSE}
Time := 0;
LiveTime := 30+Random(60);
ParticleType := PARTICLE_SPARK;
+ justSticked := false;
+ onGround := (VelY >= 0) and g_Map_HasAnyPanelAtPoint(X, Y+1, (PANEL_WALL or PANEL_CLOSEDOOR or PANEL_STEP));
+ awaken := false;
end;
if CurrentParticle+2 > MaxParticles then
Time := 0;
LiveTime := 120+Random(40);
ParticleType := PARTICLE_BLOOD;
+ justSticked := false;
+ onGround := (VelY >= 0) and g_Map_HasAnyPanelAtPoint(X, Y+1, (PANEL_WALL or PANEL_CLOSEDOOR or PANEL_STEP));
+ awaken := false;
+ //stickEY := 0;
end;
if CurrentParticle >= MaxParticles-1 then
Time := 0;
LiveTime := 30+Random(60);
ParticleType := PARTICLE_SPARK;
+ justSticked := false;
+ onGround := (VelY >= 0) and g_Map_HasAnyPanelAtPoint(X, Y+1, (PANEL_WALL or PANEL_CLOSEDOOR or PANEL_STEP));
+ awaken := false;
end;
if CurrentParticle+2 > MaxParticles then
Time := 0;
LiveTime := 60+Random(60);
ParticleType := PARTICLE_WATER;
+ justSticked := false;
+ onGround := (VelY >= 0) and g_Map_HasAnyPanelAtPoint(X, Y+1, (PANEL_WALL or PANEL_CLOSEDOOR or PANEL_STEP));
+ awaken := false;
end;
if CurrentParticle+2 > MaxParticles then
Time := 0;
LiveTime := 60+Random(60);
ParticleType := PARTICLE_WATER;
+ justSticked := false;
+ onGround := (VelY >= 0) and g_Map_HasAnyPanelAtPoint(X, Y+1, (PANEL_WALL or PANEL_CLOSEDOOR or PANEL_STEP));
+ awaken := false;
end;
if CurrentParticle+2 > MaxParticles then
end;
+{.$DEFINE D2F_DEBUG_BUBBLES}
procedure g_GFX_Bubbles(fX, fY: Integer; Count: Word; DevX, DevY: Byte);
var
a: Integer;
DevX1, DevX2,
DevY1, DevY2: Byte;
l, liquidx: Integer;
+ {$IF DEFINED(D2F_DEBUG_BUBBLES)}
+ stt: UInt64;
+ nptr, ptr: Boolean;
+ {$ENDIF}
begin
if not gpart_dbg_enabled then Exit;
l := Length(Particles);
// trace liquid, so we'll know where it ends; do it in 8px steps for speed
// tracer will return `false` if we started outside of the liquid
+
+ {$IF DEFINED(D2F_DEBUG_BUBBLES)}
+ stt := curTimeMicro();
+ ptr := mapGrid.traceOrthoRayWhileIn(liquidx, liquidTopY, X, Y, X, 0, GridTagWater or GridTagAcid1 or GridTagAcid2);
+ stt := curTimeMicro()-stt;
+ e_LogWritefln('traceOrthoRayWhileIn: time=%s (%s); liquidTopY=%s', [Integer(stt), ptr, liquidTopY]);
+ //
+ stt := curTimeMicro();
+ nptr := g_Map_TraceLiquidNonPrecise(X, Y, 0, -8, liquidx, liquidTopY);
+ stt := curTimeMicro()-stt;
+ e_LogWritefln('g_Map_TraceLiquidNonPrecise: time=%s (%s); liquidTopY=%s', [Integer(stt), nptr, liquidTopY]);
+ if not nptr then continue;
+ {$ELSE}
if not g_Map_TraceLiquidNonPrecise(X, Y, 0, -8, liquidx, liquidTopY) then continue;
+ {$ENDIF}
VelX := 0;
VelY := -1-Random;
Time := 0;
LiveTime := 65535;
ParticleType := PARTICLE_BUBBLES;
+ justSticked := false;
+ onGround := (VelY >= 0) and g_Map_HasAnyPanelAtPoint(X, Y+1, (PANEL_WALL or PANEL_CLOSEDOOR or PANEL_STEP));
+ awaken := false;
end;
if CurrentParticle+2 > MaxParticles then
diff --git a/src/game/g_grid.pas b/src/game/g_grid.pas
index a20fbfc9509b12815178a3261ecccaf30750431f..049868c7821e7784afa08dbe18e68ab97c0d6a31 100644 (file)
--- a/src/game/g_grid.pas
+++ b/src/game/g_grid.pas
function traceRay (const x0, y0, x1, y1: Integer; cb: TGridRayQueryCB; tagmask: Integer=-1): ITP; overload;
function traceRay (out ex, ey: Integer; const ax0, ay0, ax1, ay1: Integer; cb: TGridRayQueryCB; tagmask: Integer=-1): ITP;
- //function traceOrthoRayWhileIn (const x0, y0, x1, y1: Integer; tagmask: Integer=-1): ITP; overload;
- //function traceOrthoRayWhileIn (out ex, ey: Integer; const ax0, ay0, ax1, ay1: Integer; tagmask: Integer=-1): ITP;
+ // return `false` if we're still inside at the end
+ // line should be either strict horizontal, or strict vertical, otherwise an exception will be thrown
+ function traceOrthoRayWhileIn (out ex, ey: Integer; ax0, ay0, ax1, ay1: Integer; tagmask: Integer=-1): Boolean;
//WARNING: don't modify grid while any query is in progress (no checks are made!)
// you can set enabled/disabled flag, tho (but iterator can still return objects disabled inside it)
implementation
uses
- SysUtils, e_log, g_console;
+ SysUtils, e_log, g_console, utils;
// ////////////////////////////////////////////////////////////////////////// //
end;
+{.$DEFINE D2F_DEBUG_OTR}
+function TBodyGridBase.traceOrthoRayWhileIn (out ex, ey: Integer; ax0, ay0, ax1, ay1: Integer; tagmask: Integer=-1): Boolean;
+var
+ ccidx: Integer;
+ cc: PGridCell;
+ px: PBodyProxyRec;
+ ptag: Integer;
+ minx, miny: Integer;
+ f, c0, c1: Integer;
+ x0, y0, x1, y1: Integer;
+ celly0, celly1: Integer;
+ dy: Integer;
+ filled: array[0..mTileSize-1] of Byte;
+ {$IF DEFINED(D2F_DEBUG_OTR)}
+ s: AnsiString = '';
+ {$ENDIF}
+begin
+ result := false;
+ ex := ax1;
+ ey := ay1;
+ if not ((ax0 = ax1) or (ay0 = ay1)) then raise Exception.Create('orthoray is not orthogonal');
+
+ tagmask := tagmask and TagFullMask;
+ if (tagmask = 0) then exit;
+
+ if (forEachAtPoint(ax0, ay0, nil, tagmask) = nil) then exit;
+
+ minx := mMinX;
+ miny := mMinY;
+
+ // offset query coords to (0,0)-based
+ x0 := ax0-minx;
+ y0 := ay0-miny;
+ x1 := ax1-minx;
+ y1 := ay1-miny;
+
+ if (x0 = x1) then
+ begin
+ if (x0 < 0) or (x0 >= mWidth*mTileSize) then exit; // oops
+ // vertical
+ if (y0 < y1) then
+ begin
+ // down
+ if (y1 < 0) or (y0 >= mHeight*mTileSize) then exit;
+ //if (ay0 < 0) then ay0 := 0;
+ if (y0 < 0) then exit;
+ if (y1 >= mHeight*mTileSize) then y1 := mHeight*mTileSize-1;
+ dy := 1;
+ end
+ else
+ begin
+ // up
+ if (y0 < 0) or (y1 >= mHeight*mTileSize) then exit;
+ //if (ay1 < 0) then ay1 := 0;
+ if (y1 < 0) then exit;
+ if (y0 >= mHeight*mTileSize) then y0 := mHeight*mTileSize-1;
+ dy := -1;
+ end;
+ // check tile
+ while true do
+ begin
+ ccidx := mGrid[(y0 div mTileSize)*mWidth+(x0 div mTileSize)];
+ FillChar(filled, sizeof(filled), 0);
+ celly0 := y0 and (not (mTileSize-1));
+ celly1 := celly0+mTileSize-1;
+ while (ccidx <> -1) do
+ begin
+ cc := @mCells[ccidx];
+ 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 ((ptag and tagmask) <> 0) and
+ (ax0 >= px.x0) and (ax0 <= px.x1) then
+ begin
+ // bound c0 and c1 to cell
+ c0 := nclamp(px.y0-miny, celly0, celly1);
+ c1 := nclamp(px.y1-miny, celly0, celly1);
+ // fill the thing
+ {$IF DEFINED(D2F_DEBUG_OTR)}
+ e_LogWritefln('**px.y0=%s; px.y1=%s; c0=%s; c1=%s; celly0=%s; celly1=%s; [%s..%s]', [px.y0-miny, px.y1-miny, c0, c1, celly0, celly1, c0-celly0, (c0-celly0)+(c1-c0)]);
+ {$ENDIF}
+ //assert(c0 <= c1);
+ FillChar(filled[c0-celly0], c1-c0+1, 1);
+ end;
+ end;
+ // next cell
+ ccidx := cc.next;
+ end;
+ {$IF DEFINED(D2F_DEBUG_OTR)}
+ s := formatstrf(' x=%s; ay0=%s; ay1=%s; y0=%s; celly0=%s; celly1=%s; dy=%s; [', [ax0, ay0, ay1, y0, celly0, celly1, dy]);
+ for f := 0 to High(filled) do if (filled[f] <> 0) then s += '1' else s += '0';
+ s += ']';
+ e_LogWriteln(s);
+ {$ENDIF}
+ // now go till we hit cell boundary or empty space
+ if (dy < 0) then
+ begin
+ // up
+ while (y0 >= celly0) and (filled[y0-celly0] <> 0) do
+ begin
+ {$IF DEFINED(D2F_DEBUG_OTR)}
+ e_LogWritefln(' filled: cdy=%s; y0=%s; celly0=%s; ay0=%s; ay1=%s', [y0-celly0, y0, celly0, ay0, ay1]);
+ {$ENDIF}
+ Dec(y0);
+ Dec(ay0);
+ end;
+ {$IF DEFINED(D2F_DEBUG_OTR)}
+ e_LogWritefln(' span done: cdy=%s; y0=%s; celly0=%s; ay0=%s; ay1=%s', [y0-celly0, y0, celly0, ay0, ay1]);
+ {$ENDIF}
+ if (ay0 <= ay1) then begin ey := ay1; result := false; exit; end;
+ if (y0 >= celly0) then begin ey := ay0+1; {assert(forEachAtPoint(ex, ey, nil, tagmask) <> nil);} result := true; exit; end;
+ end
+ else
+ begin
+ // down
+ while (y0 <= celly1) and (filled[y1-celly0] <> 0) do begin Inc(y0); Inc(ay0); end;
+ if (ay0 >= ay1) then begin ey := ay1; result := false; exit; end;
+ if (y0 <= celly1) then begin ey := ay0-1; result := true; exit; end;
+ end;
+ end;
+ end
+ else
+ begin
+ // horizontal
+ assert(false);
+ end;
+end;
+
+
end.