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exp_AddMinecraftQuad.inc
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exp_AddMinecraftQuad.inc
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procedure AddMinecraftQuad(const iX1, iY1, iX2, iY2, iX3, iY3, iX4, iY4: integer);
var
p1, p2, p3, p4: point3d_t;
p0, p15, p25, p35, p45: point3d_t;
boxLeft, boxRight, boxTop, boxBottom: integer;
function _point_in_points(const p: point3d_p; const pp1, pp2, pp3, pp4: point3d_p): boolean;
var
minX, maxX, minY, maxY: integer;
i, j: integer;
poly: array[0..3] of point3d_p;
begin
poly[0] := pp1;
poly[1] := pp2;
poly[2] := pp3;
poly[3] := pp4;
minX := poly[0].x;
maxX := poly[0].x;
minY := poly[0].Y;
maxY := poly[0].Y;
for i := 1 to 3 do
begin
minX := MinI(poly[i].x, minX);
maxX := MaxI(poly[i].x, maxX);
minY := MinI(poly[i].y, minY);
maxY := MaxI(poly[i].y, maxY);
end;
if (p.x <= minX) or (p.x >= maxX) or (p.y <= minY) or (p.Y >= maxY) then
begin
Result := False;
Exit;
end;
Result := False;
i := 0;
j := 3;
while i < 4 do
begin
if (poly[i].y >= p.y ) <> (poly[j].y >= p.y) then
if p.X <= (poly[j].x - poly[i].x) * (p.y - poly[i].y) / (poly[j].y - poly[i].y) + poly[i].x then
Result := not Result;
j := i;
inc(i);
end;
end;
function _calc_minecraft_z(const zz: integer): integer;
begin
Result := GetIntInRange(((zz + options.layerstep div 2) div options.layerstep) * options.layerstep, -HEIGHTMAPRANGE, HEIGHTMAPRANGE);
end;
procedure _fix_minecraft_side(const ll, ss: integer);
begin
if doomlinedefs[ll].sidenum[0] < 0 then
doomlinedefs[ll].sidenum[0] := AddSidedef(ss)
else
begin
doomlinedefs[ll].sidenum[1] := AddSidedef(ss);
doomlinedefs[ll].flags := doomlinedefs[ll].flags and not ML_BLOCKING;
doomlinedefs[ll].flags := doomlinedefs[ll].flags or ML_TWOSIDED;
end;
end;
procedure _add_minecraft_sector_4(const pp1, pp2, pp3, pp4: point3d_p);
var
zz: integer;
vv1, vv2, vv3, vv4: integer;
ll1, ll2, ll3, ll4: integer;
sec: integer;
begin
zz := _calc_minecraft_z((pp1.Z + pp2.Z + pp3.Z + pp4.Z) div 4);
sec := AddSector(zz, options.defceilingheight, False);
vv1 := AddVertex(pp1.X, -pp1.Y);
vv2 := AddVertex(pp2.X, -pp2.Y);
vv3 := AddVertex(pp3.X, -pp3.Y);
vv4 := AddVertex(pp4.X, -pp4.Y);
ll1 := AddLinedef(vv1, vv2);
_fix_minecraft_side(ll1, sec);
ll2 := AddLinedef(vv2, vv3);
_fix_minecraft_side(ll2, sec);
ll3 := AddLinedef(vv3, vv4);
_fix_minecraft_side(ll3, sec);
ll4 := AddLinedef(vv4, vv1);
_fix_minecraft_side(ll4, sec);
end;
procedure _add_minecraft_sector_5(const pp1, pp2, pp3, pp4, pp5: point3d_p);
var
zz: integer;
vv1, vv2, vv3, vv4, vv5: integer;
ll1, ll2, ll3, ll4, ll5: integer;
sec: integer;
begin
zz := _calc_minecraft_z((pp1.Z + pp2.Z + pp3.Z + pp4.Z + pp5.Z) div 5);
sec := AddSector(zz, options.defceilingheight, False);
vv1 := AddVertex(pp1.X, -pp1.Y);
vv2 := AddVertex(pp2.X, -pp2.Y);
vv3 := AddVertex(pp3.X, -pp3.Y);
vv4 := AddVertex(pp4.X, -pp4.Y);
vv5 := AddVertex(pp5.X, -pp5.Y);
ll1 := AddLinedef(vv1, vv2);
_fix_minecraft_side(ll1, sec);
ll2 := AddLinedef(vv2, vv3);
_fix_minecraft_side(ll2, sec);
ll3 := AddLinedef(vv3, vv4);
_fix_minecraft_side(ll3, sec);
ll4 := AddLinedef(vv4, vv5);
_fix_minecraft_side(ll4, sec);
ll5 := AddLinedef(vv5, vv1);
_fix_minecraft_side(ll5, sec);
end;
procedure _add_minecraft_sector_6(const pp1, pp2, pp3, pp4, pp5, pp6: point3d_p);
var
zz: integer;
vv1, vv2, vv3, vv4, vv5, vv6: integer;
ll1, ll2, ll3, ll4, ll5, ll6: integer;
sec: integer;
begin
zz := _calc_minecraft_z((pp1.Z + pp2.Z + pp3.Z + pp4.Z + pp5.Z + pp6.Z) div 6);
sec := AddSector(zz, options.defceilingheight, False);
vv1 := AddVertex(pp1.X, -pp1.Y);
vv2 := AddVertex(pp2.X, -pp2.Y);
vv3 := AddVertex(pp3.X, -pp3.Y);
vv4 := AddVertex(pp4.X, -pp4.Y);
vv5 := AddVertex(pp5.X, -pp5.Y);
vv6 := AddVertex(pp6.X, -pp6.Y);
ll1 := AddLinedef(vv1, vv2);
_fix_minecraft_side(ll1, sec);
ll2 := AddLinedef(vv2, vv3);
_fix_minecraft_side(ll2, sec);
ll3 := AddLinedef(vv3, vv4);
_fix_minecraft_side(ll3, sec);
ll4 := AddLinedef(vv4, vv5);
_fix_minecraft_side(ll4, sec);
ll5 := AddLinedef(vv5, vv6);
_fix_minecraft_side(ll5, sec);
ll6 := AddLinedef(vv6, vv1);
_fix_minecraft_side(ll6, sec);
end;
procedure _add_minecraft_sector_8(const pp1, pp2, pp3, pp4, pp5, pp6, pp7, pp8: point3d_p);
var
zz: integer;
vv1, vv2, vv3, vv4, vv5, vv6, vv7, vv8: integer;
ll1, ll2, ll3, ll4, ll5, ll6, ll7, ll8: integer;
sec: integer;
begin
zz := _calc_minecraft_z((pp1.Z + pp2.Z + pp3.Z + pp4.Z + pp5.Z + pp6.Z + pp7.Z + pp8.Z) div 8);
sec := AddSector(zz, options.defceilingheight, False);
vv1 := AddVertex(pp1.X, -pp1.Y);
vv2 := AddVertex(pp2.X, -pp2.Y);
vv3 := AddVertex(pp3.X, -pp3.Y);
vv4 := AddVertex(pp4.X, -pp4.Y);
vv5 := AddVertex(pp5.X, -pp5.Y);
vv6 := AddVertex(pp6.X, -pp6.Y);
vv7 := AddVertex(pp7.X, -pp7.Y);
vv8 := AddVertex(pp8.X, -pp8.Y);
ll1 := AddLinedef(vv1, vv2);
_fix_minecraft_side(ll1, sec);
ll2 := AddLinedef(vv2, vv3);
_fix_minecraft_side(ll2, sec);
ll3 := AddLinedef(vv3, vv4);
_fix_minecraft_side(ll3, sec);
ll4 := AddLinedef(vv4, vv5);
_fix_minecraft_side(ll4, sec);
ll5 := AddLinedef(vv5, vv6);
_fix_minecraft_side(ll5, sec);
ll6 := AddLinedef(vv6, vv7);
_fix_minecraft_side(ll6, sec);
ll7 := AddLinedef(vv7, vv8);
_fix_minecraft_side(ll7, sec);
ll8 := AddLinedef(vv8, vv1);
_fix_minecraft_side(ll8, sec);
end;
function _inside_box(const p: point3d_p): boolean;
begin
Result := (p.X > boxLeft) and (p.X < boxRight) and
(p.Y > boxTop) and (p.Y < boxBottom);
end;
begin
p1 := GetHeightmapCoords3D(iX1, iY1);
p2 := GetHeightmapCoords3D(iX2, iY2);
p3 := GetHeightmapCoords3D(iX3, iY3);
p4 := GetHeightmapCoords3D(iX4, iY4);
p15.X := (p1.X + p2.X) div 2;
p15.Y := (p1.Y + p2.Y) div 2;
p15.Z := (p1.Z + p2.Z) div 2;
p25.X := (p2.X + p3.X) div 2;
p25.Y := (p2.Y + p3.Y) div 2;
p25.Z := (p2.Z + p3.Z) div 2;
p35.X := (p3.X + p4.X) div 2;
p35.Y := (p3.Y + p4.Y) div 2;
p35.Z := (p3.Z + p4.Z) div 2;
p45.X := (p4.X + p1.X) div 2;
p45.Y := (p4.Y + p1.Y) div 2;
p45.Z := (p4.Z + p1.Z) div 2;
boxLeft := MaxI(p1.X, p4.X);
boxRight := MinI(p2.X, p3.X);
boxTop := MaxI(p1.Y, p2.Y);
boxBottom := MinI(p3.Y, p4.Y);
p0.X := (p1.X + p2.X + p3.X + p4.X) div 4;
p0.Y := (p1.Y + p2.Y + p3.Y + p4.Y) div 4;
p0.Z := (p1.Z + p2.Z + p3.Z + p4.Z) div 4;
if not _point_in_points(@p0, @p1, @p2, @p3, @p4) then
begin
p0.X := (p1.X + p3.X) div 2;
p0.Y := (p1.Y + p3.Y) div 2;
p0.Z := (p1.Z + p3.Z) div 4;
if not _point_in_points(@p0, @p1, @p2, @p3, @p4) then
begin
p0.X := (p2.X + p4.X) div 2;
p0.Y := (p2.Y + p4.Y) div 2;
p0.Z := (p2.Z + p4.Z) div 4;
if not _point_in_points(@p0, @p1, @p2, @p3, @p4) or not _inside_box(@p0) then
begin
_add_minecraft_sector_8(@p1, @p15, @p2, @p25, @p3, @p35, @p4, @p45);
Exit;
end;
end;
end;
AddVertex(p1.X, -p1.Y);
AddVertex(p2.X, -p2.Y);
AddVertex(p3.X, -p3.Y);
AddVertex(p4.X, -p4.Y);
AddVertex(p15.X, -p15.Y);
AddVertex(p25.X, -p25.Y);
AddVertex(p35.X, -p35.Y);
AddVertex(p45.X, -p45.Y);
AddVertex(p0.X, -p0.Y);
p1.Z := _calc_minecraft_z(p1.Z);
p2.Z := _calc_minecraft_z(p2.Z);
p3.Z := _calc_minecraft_z(p3.Z);
p4.Z := _calc_minecraft_z(p4.Z);
p15.Z := _calc_minecraft_z(p15.Z);
p25.Z := _calc_minecraft_z(p25.Z);
p35.Z := _calc_minecraft_z(p35.Z);
p45.Z := _calc_minecraft_z(p45.Z);
p0.Z := _calc_minecraft_z(p0.Z);
if (p1.Z < p3.Z) and (p1.Z < p4.Z) and (p2.Z < p3.Z) and (p2.Z < p4.Z) then
begin
_add_minecraft_sector_6(@p1, @p15, @p2, @p25, @p0, @p45);
_add_minecraft_sector_6(@p45, @p0, @p25, @p3, @p35, @p4);
end
else if (p1.Z > p3.Z) and (p1.Z > p4.Z) and (p2.Z > p3.Z) and (p2.Z > p4.Z) then
begin
_add_minecraft_sector_6(@p1, @p15, @p2, @p25, @p0, @p45);
_add_minecraft_sector_6(@p45, @p0, @p25, @p3, @p35, @p4);
end
else if (p1.Z < p2.Z) and (p1.Z < p3.Z) and (p4.Z < p2.Z) and (p4.Z < p3.Z) then
begin
_add_minecraft_sector_6(@p1, @p15, @p0, @p35, @p4, @p45);
_add_minecraft_sector_6(@p35, @p0, @p15, @p2, @p25, @p3);
end
else if (p1.Z > p2.Z) and (p1.Z > p3.Z) and (p4.Z > p2.Z) and (p4.Z > p3.Z) then
begin
_add_minecraft_sector_6(@p1, @p15, @p0, @p35, @p4, @p45);
_add_minecraft_sector_6(@p35, @p0, @p15, @p2, @p25, @p3);
end
else if (p1.Z = p2.Z) and (p2.Z = p3.Z) and (p3.Z = p4.Z) then
_add_minecraft_sector_8(@p1, @p15, @p2, @p25, @p3, @p35, @p4, @p45)
else if (p1.Z = p2.Z) and (p2.Z = p4.Z) then
begin
_add_minecraft_sector_5(@p1, @p15, @p2, @p4, @p45);
_add_minecraft_sector_5(@p4, @p2, @p25, @p3, @p35);
end
else if (p1.Z = p2.Z) and (p2.Z = p3.Z) then
begin
_add_minecraft_sector_5(@p1, @p15, @p2, @p25, @p3);
_add_minecraft_sector_5(@p1, @p3, @p35, @p4, @p45);
end
else if (p2.Z = p3.Z) and (p3.Z = p4.Z) then
begin
_add_minecraft_sector_5(@p2, @p25, @p3, @p35, @p4);
_add_minecraft_sector_5(@p2, @p4, @p45, @p1, @p15);
end
else if (p3.Z = p4.Z) and (p4.Z = p1.Z) then
begin
_add_minecraft_sector_5(@p3, @p35, @p4, @p45, @p1);
_add_minecraft_sector_5(@p3, @p1, @p15, @p2, @p25);
end
else
begin
_add_minecraft_sector_4(@p1, @p15, @p0, @p45);
_add_minecraft_sector_4(@p15, @p2, @p25, @p0);
_add_minecraft_sector_4(@p0, @p25, @p3, @p35);
_add_minecraft_sector_4(@p45, @p0, @p35, @p4);
end;
end;