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Cleaning up maths: part 3.

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Demangled methods, vectors args by ref, added comments, more accurate ray_intersect_line.
This commit is contained in:
Muzychenko Andrey 2022-05-13 11:15:30 +03:00
parent 2d0da712e3
commit fdf1f6c9f1
21 changed files with 296 additions and 356 deletions
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3
SpaceCadetPinball/NatvisFile.natvis
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@ -10,4 +10,7 @@
<Item Name="[Color]" ExcludeView="simple">Color</Item> <Item Name="[Color]" ExcludeView="simple">Color</Item>
</Expand> </Expand>
</Type> </Type>
<Type Name="vector3">
<DisplayString>{{ X={X} Y={Y} Z={Z} }}</DisplayString>
</Type>
</AutoVisualizer> </AutoVisualizer>

2
SpaceCadetPinball/TBall.cpp
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@ -135,7 +135,7 @@ void TBall::throw_ball(TBall* ball, vector3* acceleration, float angleMult, floa
ball->Acceleration = *acceleration; ball->Acceleration = *acceleration;
float rnd = RandFloat(); float rnd = RandFloat();
float angle = (1.0f - (rnd + rnd)) * angleMult; float angle = (1.0f - (rnd + rnd)) * angleMult;
maths::RotateVector(&ball->Acceleration, angle); maths::RotateVector(ball->Acceleration, angle);
rnd = RandFloat(); rnd = RandFloat();
ball->Speed = (1.0f - (rnd + rnd)) * (speedMult1 * speedMult2) + speedMult1; ball->Speed = (1.0f - (rnd + rnd)) * (speedMult1 * speedMult2) + speedMult1;
} }

4
SpaceCadetPinball/TCircle.cpp
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@ -14,7 +14,7 @@ TCircle::TCircle(TCollisionComponent* collComp, char* activeFlag, unsigned colli
float TCircle::FindCollisionDistance(ray_type* ray) float TCircle::FindCollisionDistance(ray_type* ray)
{ {
return maths::ray_intersect_circle(ray, &Circle); return maths::ray_intersect_circle(*ray, Circle);
} }
void TCircle::EdgeCollision(TBall* ball, float coef) void TCircle::EdgeCollision(TBall* ball, float coef)
@ -25,7 +25,7 @@ void TCircle::EdgeCollision(TBall* ball, float coef)
nextPosition.Y = coef * ball->Acceleration.Y + ball->Position.Y; nextPosition.Y = coef * ball->Acceleration.Y + ball->Position.Y;
direction.X = nextPosition.X - Circle.Center.X; direction.X = nextPosition.X - Circle.Center.X;
direction.Y = nextPosition.Y - Circle.Center.Y; direction.Y = nextPosition.Y - Circle.Center.Y;
maths::normalize_2d(&direction); maths::normalize_2d(direction);
CollisionComponent->Collision(ball, &nextPosition, &direction, coef, this); CollisionComponent->Collision(ball, &nextPosition, &direction, coef, this);
} }

2
SpaceCadetPinball/TEdgeManager.cpp
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@ -100,7 +100,7 @@ void TEdgeManager::FieldEffects(TBall* ball, vector2* dstVec)
{ {
if (field->CollisionComp->FieldEffect(ball, &vec)) if (field->CollisionComp->FieldEffect(ball, &vec))
{ {
maths::vector_add(dstVec, &vec); maths::vector_add(*dstVec, vec);
} }
} }
} }

6
SpaceCadetPinball/TEdgeSegment.cpp
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@ -50,7 +50,7 @@ TEdgeSegment* TEdgeSegment::install_wall(float* floatArr, TCollisionComponent* c
start.Y = floatArr[2]; start.Y = floatArr[2];
end.X = floatArr[3]; end.X = floatArr[3];
end.Y = floatArr[4]; end.Y = floatArr[4];
auto line = new TLine(collComp, activeFlagPtr, collisionGroup, &start, &end); auto line = new TLine(collComp, activeFlagPtr, collisionGroup, start, end);
edge = line; edge = line;
if (line) if (line)
@ -93,7 +93,7 @@ TEdgeSegment* TEdgeSegment::install_wall(float* floatArr, TCollisionComponent* c
vec1.Y = center.Y - prevCenter.Y; vec1.Y = center.Y - prevCenter.Y;
vec2.X = centerX2 - centerX1; vec2.X = centerX2 - centerX1;
vec2.Y = centerY2 - center.Y; vec2.Y = centerY2 - center.Y;
maths::cross(&vec1, &vec2, &dstVec); maths::cross(vec1, vec2, dstVec);
if ((dstVec.Z > 0.0f && offset > 0.0f) || if ((dstVec.Z > 0.0f && offset > 0.0f) ||
(dstVec.Z < 0.0f && offset < 0.0f)) (dstVec.Z < 0.0f && offset < 0.0f))
{ {
@ -113,7 +113,7 @@ TEdgeSegment* TEdgeSegment::install_wall(float* floatArr, TCollisionComponent* c
start.Y = floatArrPtr[1]; start.Y = floatArrPtr[1];
end.X = floatArrPtr[2]; end.X = floatArrPtr[2];
end.Y = floatArrPtr[3]; end.Y = floatArrPtr[3];
auto line = new TLine(collComp, activeFlagPtr, collisionGroup, &start, &end); auto line = new TLine(collComp, activeFlagPtr, collisionGroup, start, end);
edge = line; edge = line;
if (line) if (line)

4
SpaceCadetPinball/TFlagSpinner.cpp
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@ -21,14 +21,14 @@ TFlagSpinner::TFlagSpinner(TPinballTable* table, int groupIndex) : TCollisionCom
end.Y = visual.FloatArr[1]; end.Y = visual.FloatArr[1];
start.X = visual.FloatArr[2]; start.X = visual.FloatArr[2];
start.Y = visual.FloatArr[3]; start.Y = visual.FloatArr[3];
auto line = new TLine(this, &ActiveFlag, visual.CollisionGroup, &start, &end); auto line = new TLine(this, &ActiveFlag, visual.CollisionGroup, start, end);
if (line) if (line)
{ {
line->place_in_grid(); line->place_in_grid();
EdgeList.push_back(line); EdgeList.push_back(line);
} }
line = new TLine(this, &ActiveFlag, visual.CollisionGroup, &end, &start); line = new TLine(this, &ActiveFlag, visual.CollisionGroup, end, start);
PrevCollider = line; PrevCollider = line;
if (line) if (line)
{ {

62
SpaceCadetPinball/TFlipperEdge.cpp
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@ -23,8 +23,8 @@ TFlipperEdge::TFlipperEdge(TCollisionComponent* collComp, char* activeFlag, unsi
RetractTime = retractTime; RetractTime = retractTime;
CollisionMult = collMult; CollisionMult = collMult;
T1Src = *vecT1; T1Src = static_cast<vector2>(*vecT1);
T2Src = *vecT2; T2Src = static_cast<vector2>(*vecT2);
RotOrigin.X = origin->X; RotOrigin.X = origin->X;
RotOrigin.Y = origin->Y; RotOrigin.Y = origin->Y;
@ -39,15 +39,15 @@ TFlipperEdge::TFlipperEdge(TCollisionComponent* collComp, char* activeFlag, unsi
vecDir1.X = vecT1->X - origin->X; vecDir1.X = vecT1->X - origin->X;
vecDir1.Y = vecT1->Y - origin->Y; vecDir1.Y = vecT1->Y - origin->Y;
vecDir1.Z = 0.0; vecDir1.Z = 0.0;
maths::normalize_2d(&vecDir1); maths::normalize_2d(vecDir1);
vecDir2.X = vecT2->X - origin->X; vecDir2.X = vecT2->X - origin->X;
vecDir2.Y = vecT2->Y - origin->Y; vecDir2.Y = vecT2->Y - origin->Y;
vecDir2.Z = 0.0; vecDir2.Z = 0.0;
maths::normalize_2d(&vecDir2); maths::normalize_2d(vecDir2);
AngleMax = acos(maths::DotProduct(&vecDir1, &vecDir2)); AngleMax = acos(maths::DotProduct(vecDir1, vecDir2));
maths::cross(&vecDir1, &vecDir2, &crossProd); maths::cross(vecDir1, vecDir2, crossProd);
if (crossProd.Z < 0.0f) if (crossProd.Z < 0.0f)
AngleMax = -AngleMax; AngleMax = -AngleMax;
FlipperFlag = 0; FlipperFlag = 0;
@ -69,8 +69,8 @@ TFlipperEdge::TFlipperEdge(TCollisionComponent* collComp, char* activeFlag, unsi
if (AngleMax < 0.0f) if (AngleMax < 0.0f)
{ {
maths::vswap(&A1Src, &B1Src); std::swap(A1Src, B1Src);
maths::vswap(&A2Src, &B2Src); std::swap(A2Src, B2Src);
} }
auto dx = vecT1->X - RotOrigin.X; auto dx = vecT1->X - RotOrigin.X;
@ -79,7 +79,7 @@ TFlipperEdge::TFlipperEdge(TCollisionComponent* collComp, char* activeFlag, unsi
DistanceDivSq = distance1 * distance1; DistanceDivSq = distance1 * distance1;
float minMoveTime = std::min(ExtendTime, RetractTime); float minMoveTime = std::min(ExtendTime, RetractTime);
auto distance = maths::Distance(vecT1, vecT2); auto distance = maths::Distance(*vecT1, *vecT2);
CollisionTimeAdvance = minMoveTime / (distance / CircleT1Radius + distance / CircleT1Radius); CollisionTimeAdvance = minMoveTime / (distance / CircleT1Radius + distance / CircleT1Radius);
TFlipperEdge::place_in_grid(); TFlipperEdge::place_in_grid();
@ -139,12 +139,12 @@ float TFlipperEdge::FindCollisionDistance(ray_type* ray)
{ {
if (maths::Distance_Squared(ogRay->Origin, T1) >= CircleT1RadiusMSq) if (maths::Distance_Squared(ogRay->Origin, T1) >= CircleT1RadiusMSq)
{ {
srcRay.Direction.Y = lineB.PerpendicularL.Y; srcRay.Direction.Y = lineB.PerpendicularC.Y;
srcRay.Direction.X = lineB.PerpendicularL.X; srcRay.Direction.X = lineB.PerpendicularC.X;
if (ballInside == 4) if (ballInside == 4)
{ {
srcRay.Direction.Y = lineA.PerpendicularL.Y; srcRay.Direction.Y = lineA.PerpendicularC.Y;
srcRay.Direction.X = lineA.PerpendicularL.X; srcRay.Direction.X = lineA.PerpendicularC.X;
} }
srcRay.Direction.X = -srcRay.Direction.X; srcRay.Direction.X = -srcRay.Direction.X;
srcRay.Direction.Y = -srcRay.Direction.Y; srcRay.Direction.Y = -srcRay.Direction.Y;
@ -153,14 +153,14 @@ float TFlipperEdge::FindCollisionDistance(ray_type* ray)
{ {
srcRay.Direction.X = T1.X - ogRay->Origin.X; srcRay.Direction.X = T1.X - ogRay->Origin.X;
srcRay.Direction.Y = T1.Y - ogRay->Origin.Y; srcRay.Direction.Y = T1.Y - ogRay->Origin.Y;
maths::normalize_2d(&srcRay.Direction); maths::normalize_2d(srcRay.Direction);
} }
} }
else else
{ {
srcRay.Direction.X = RotOrigin.X - ogRay->Origin.X; srcRay.Direction.X = RotOrigin.X - ogRay->Origin.X;
srcRay.Direction.Y = RotOrigin.Y - ogRay->Origin.Y; srcRay.Direction.Y = RotOrigin.Y - ogRay->Origin.Y;
maths::normalize_2d(&srcRay.Direction); maths::normalize_2d(srcRay.Direction);
} }
srcRay.Origin.X = ogRay->Origin.X - srcRay.Direction.X * 5.0f; srcRay.Origin.X = ogRay->Origin.X - srcRay.Direction.X * 5.0f;
@ -170,7 +170,7 @@ float TFlipperEdge::FindCollisionDistance(ray_type* ray)
{ {
srcRay.Direction.X = RotOrigin.X - ogRay->Origin.X; srcRay.Direction.X = RotOrigin.X - ogRay->Origin.X;
srcRay.Direction.Y = RotOrigin.Y - ogRay->Origin.Y; srcRay.Direction.Y = RotOrigin.Y - ogRay->Origin.Y;
maths::normalize_2d(&srcRay.Direction); maths::normalize_2d(srcRay.Direction);
srcRay.Origin.X = ogRay->Origin.X - srcRay.Direction.X * 5.0f; srcRay.Origin.X = ogRay->Origin.X - srcRay.Direction.X * 5.0f;
srcRay.Origin.Y = ogRay->Origin.Y - srcRay.Direction.Y * 5.0f; srcRay.Origin.Y = ogRay->Origin.Y - srcRay.Direction.Y * 5.0f;
if (maths::distance_to_flipper(&srcRay, &dstRay) >= 1e+09f) if (maths::distance_to_flipper(&srcRay, &dstRay) >= 1e+09f)
@ -203,9 +203,9 @@ float TFlipperEdge::FindCollisionDistance(ray_type* ray)
vector2* linePtr; vector2* linePtr;
if (FlipperFlag == 1 && ballInside != 5) if (FlipperFlag == 1 && ballInside != 5)
{ {
linePtr = &lineA.PerpendicularL; linePtr = &lineA.PerpendicularC;
srcRay.Direction.Y = lineA.PerpendicularL.Y; srcRay.Direction.Y = lineA.PerpendicularC.Y;
srcRay.Direction.X = lineA.PerpendicularL.X; srcRay.Direction.X = lineA.PerpendicularC.X;
} }
else else
{ {
@ -215,7 +215,7 @@ float TFlipperEdge::FindCollisionDistance(ray_type* ray)
CollisionFlag2 = 1; CollisionFlag2 = 1;
srcRay.Direction.X = RotOrigin.X - posX; srcRay.Direction.X = RotOrigin.X - posX;
srcRay.Direction.Y = RotOrigin.Y - posY; srcRay.Direction.Y = RotOrigin.Y - posY;
maths::normalize_2d(&srcRay.Direction); maths::normalize_2d(srcRay.Direction);
srcRay.Origin.X = posX - srcRay.Direction.X * 5.0f; srcRay.Origin.X = posX - srcRay.Direction.X * 5.0f;
srcRay.Origin.Y = posY - srcRay.Direction.Y * 5.0f; srcRay.Origin.Y = posY - srcRay.Direction.Y * 5.0f;
@ -235,9 +235,9 @@ float TFlipperEdge::FindCollisionDistance(ray_type* ray)
NextBallPosition.Y -= srcRay.Direction.Y * 1e-05f; NextBallPosition.Y -= srcRay.Direction.Y * 1e-05f;
return 0.0; return 0.0;
} }
linePtr = &lineB.PerpendicularL; linePtr = &lineB.PerpendicularC;
srcRay.Direction.Y = lineB.PerpendicularL.Y; srcRay.Direction.Y = lineB.PerpendicularC.Y;
srcRay.Direction.X = lineB.PerpendicularL.X; srcRay.Direction.X = lineB.PerpendicularC.X;
} }
CollisionLinePerp = *linePtr; CollisionLinePerp = *linePtr;
@ -274,13 +274,13 @@ float TFlipperEdge::FindCollisionDistance(ray_type* ray)
vector2* linePtr; vector2* linePtr;
if (FlipperFlag == 2) if (FlipperFlag == 2)
{ {
linePtr = &lineB.PerpendicularL; linePtr = &lineB.PerpendicularC;
CollisionFlag1 = AngleMax <= 0.0f; CollisionFlag1 = AngleMax <= 0.0f;
} }
else else
{ {
CollisionFlag1 = AngleMax > 0.0f; CollisionFlag1 = AngleMax > 0.0f;
linePtr = &lineA.PerpendicularL; linePtr = &lineA.PerpendicularC;
} }
CollisionLinePerp = *linePtr; CollisionLinePerp = *linePtr;
CollisionDirection = dstRay.Direction; CollisionDirection = dstRay.Direction;
@ -313,7 +313,7 @@ void TFlipperEdge::EdgeCollision(TBall* ball, float coef)
{ {
float v11; float v11;
float v20 = sqrt(distance / DistanceDivSq) * (fabs(AngleMax) / AngleMult); float v20 = sqrt(distance / DistanceDivSq) * (fabs(AngleMax) / AngleMult);
float dot1 = maths::DotProduct(&CollisionLinePerp, &CollisionDirection); float dot1 = maths::DotProduct(CollisionLinePerp, CollisionDirection);
if (dot1 >= 0.0f) if (dot1 >= 0.0f)
v11 = dot1 * v20; v11 = dot1 * v20;
else else
@ -395,11 +395,11 @@ void TFlipperEdge::set_control_points(float timeNow)
B1 = B1Src; B1 = B1Src;
B2 = B2Src; B2 = B2Src;
T1 = T1Src; T1 = T1Src;
maths::RotatePt(&A1, flipper_sin_angle, flipper_cos_angle, &RotOrigin); maths::RotatePt(A1, flipper_sin_angle, flipper_cos_angle, RotOrigin);
maths::RotatePt(&A2, flipper_sin_angle, flipper_cos_angle, &RotOrigin); maths::RotatePt(A2, flipper_sin_angle, flipper_cos_angle, RotOrigin);
maths::RotatePt(&T1, flipper_sin_angle, flipper_cos_angle, &RotOrigin); maths::RotatePt(T1, flipper_sin_angle, flipper_cos_angle, RotOrigin);
maths::RotatePt(&B1, flipper_sin_angle, flipper_cos_angle, &RotOrigin); maths::RotatePt(B1, flipper_sin_angle, flipper_cos_angle, RotOrigin);
maths::RotatePt(&B2, flipper_sin_angle, flipper_cos_angle, &RotOrigin); maths::RotatePt(B2, flipper_sin_angle, flipper_cos_angle, RotOrigin);
} }
void TFlipperEdge::build_edges_in_motion() void TFlipperEdge::build_edges_in_motion()

2
SpaceCadetPinball/THole.cpp
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@ -127,7 +127,7 @@ int THole::FieldEffect(TBall* ball, vector2* vecDst)
direction.Y = Circle.Center.Y - ball->Position.Y; direction.Y = Circle.Center.Y - ball->Position.Y;
if (direction.X * direction.X + direction.Y * direction.Y <= Circle.RadiusSq) if (direction.X * direction.X + direction.Y * direction.Y <= Circle.RadiusSq)
{ {
maths::normalize_2d(&direction); maths::normalize_2d(direction);
vecDst->X = direction.X * GravityPull - ball->Acceleration.X * ball->Speed; vecDst->X = direction.X * GravityPull - ball->Acceleration.X * ball->Speed;
vecDst->Y = direction.Y * GravityPull - ball->Acceleration.Y * ball->Speed; vecDst->Y = direction.Y * GravityPull - ball->Acceleration.Y * ball->Speed;
result = 1; result = 1;

2
SpaceCadetPinball/TKickout.cpp
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@ -138,7 +138,7 @@ int TKickout::FieldEffect(TBall* ball, vector2* dstVec)
direction.Y = Circle.Center.Y - ball->Position.Y; direction.Y = Circle.Center.Y - ball->Position.Y;
if (direction.Y * direction.Y + direction.X * direction.X > Circle.RadiusSq) if (direction.Y * direction.Y + direction.X * direction.X > Circle.RadiusSq)
return 0; return 0;
maths::normalize_2d(&direction); maths::normalize_2d(direction);
dstVec->X = direction.X * FieldMult - ball->Acceleration.X * ball->Speed; dstVec->X = direction.X * FieldMult - ball->Acceleration.X * ball->Speed;
dstVec->Y = direction.Y * FieldMult - ball->Acceleration.Y * ball->Speed; dstVec->Y = direction.Y * FieldMult - ball->Acceleration.Y * ball->Speed;
return 1; return 1;

18
SpaceCadetPinball/TLine.cpp
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@ -14,20 +14,20 @@ TLine::TLine(TCollisionComponent* collCmp, char* activeFlag, unsigned int collis
maths::line_init(&Line, x0, y0, x1, y1); maths::line_init(&Line, x0, y0, x1, y1);
} }
TLine::TLine(TCollisionComponent* collCmp, char* activeFlag, unsigned int collisionGroup, struct vector2* start, TLine::TLine(TCollisionComponent* collCmp, char* activeFlag, unsigned int collisionGroup, const vector2& start,
struct vector2* end) : TEdgeSegment(collCmp, activeFlag, collisionGroup) const vector2& end) : TEdgeSegment(collCmp, activeFlag, collisionGroup)
{ {
X0 = start->X; X0 = start.X;
Y0 = start->Y; Y0 = start.Y;
X1 = end->X; X1 = end.X;
Y1 = end->Y; Y1 = end.Y;
maths::line_init(&Line, X0, Y0, X1, Y1); maths::line_init(&Line, X0, Y0, X1, Y1);
} }
void TLine::Offset(float offset) void TLine::Offset(float offset)
{ {
float offX = offset * Line.PerpendicularL.X; float offX = offset * Line.PerpendicularC.X;
float offY = offset * Line.PerpendicularL.Y; float offY = offset * Line.PerpendicularC.Y;
X0 += offX; X0 += offX;
Y0 += offY; Y0 += offY;
@ -46,7 +46,7 @@ void TLine::EdgeCollision(TBall* ball, float coef)
CollisionComponent->Collision( CollisionComponent->Collision(
ball, ball,
&Line.RayIntersect, &Line.RayIntersect,
&Line.PerpendicularL, &Line.PerpendicularC,
coef, coef,
this); this);
} }

2
SpaceCadetPinball/TLine.h
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@ -9,7 +9,7 @@ public:
line_type Line{}; line_type Line{};
float X0, Y0, X1, Y1; float X0, Y0, X1, Y1;
TLine(TCollisionComponent* collCmp, char* activeFlag, unsigned int collisionGroup, float x0, float y0, float x1, float y1); TLine(TCollisionComponent* collCmp, char* activeFlag, unsigned int collisionGroup, float x0, float y0, float x1, float y1);
TLine(TCollisionComponent* collCmp, char* activeFlag, unsigned int collisionGroup, vector2* start, vector2* end); TLine(TCollisionComponent* collCmp, char* activeFlag, unsigned int collisionGroup, const vector2& start, const vector2& end);
void Offset(float offset); void Offset(float offset);
float FindCollisionDistance(ray_type* ray) override; float FindCollisionDistance(ray_type* ray) override;
void EdgeCollision(TBall* ball, float coef) override; void EdgeCollision(TBall* ball, float coef) override;

4
SpaceCadetPinball/TOneway.cpp
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@ -21,7 +21,7 @@ TOneway::TOneway(TPinballTable* table, int groupIndex) : TCollisionComponent(tab
linePt1.X = visual.FloatArr[2]; linePt1.X = visual.FloatArr[2];
linePt1.Y = visual.FloatArr[3]; linePt1.Y = visual.FloatArr[3];
auto line = new TLine(this, &ActiveFlag, visual.CollisionGroup, &linePt2, &linePt1); auto line = new TLine(this, &ActiveFlag, visual.CollisionGroup, linePt2, linePt1);
if (line) if (line)
{ {
line->Offset(table->CollisionCompOffset); line->Offset(table->CollisionCompOffset);
@ -29,7 +29,7 @@ TOneway::TOneway(TPinballTable* table, int groupIndex) : TCollisionComponent(tab
EdgeList.push_back(line); EdgeList.push_back(line);
} }
line = new TLine(this, &ActiveFlag, visual.CollisionGroup, &linePt1, &linePt2); line = new TLine(this, &ActiveFlag, visual.CollisionGroup, linePt1, linePt2);
Line = line; Line = line;
if (line) if (line)
{ {

2
SpaceCadetPinball/TPinballComponent.cpp
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@ -59,7 +59,7 @@ TPinballComponent::TPinballComponent(TPinballTable* table, int groupIndex, bool
tmpRect.YPosition = bmp->YPosition - table->YOffset; tmpRect.YPosition = bmp->YPosition - table->YOffset;
tmpRect.Width = bmp->Width; tmpRect.Width = bmp->Width;
tmpRect.Height = bmp->Height; tmpRect.Height = bmp->Height;
maths::enclosing_box(&bmp1Rect, &tmpRect, &bmp1Rect); maths::enclosing_box(bmp1Rect, tmpRect, bmp1Rect);
} }
RenderSprite = render::create_sprite( RenderSprite = render::create_sprite(

35
SpaceCadetPinball/TRamp.cpp
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@ -14,7 +14,7 @@
TRamp::TRamp(TPinballTable* table, int groupIndex) : TCollisionComponent(table, groupIndex, false) TRamp::TRamp(TPinballTable* table, int groupIndex) : TCollisionComponent(table, groupIndex, false)
{ {
visualStruct visual{}; visualStruct visual{};
vector2 end{}, start{}, *end2, *start2, *start3, *end3; vector2 end{}, start{}, end2{}, start2{}, start3{}, end3{};
MessageField = 0; MessageField = 0;
UnusedBaseFlag = 1; UnusedBaseFlag = 1;
@ -33,7 +33,7 @@ TRamp::TRamp(TPinballTable* table, int groupIndex) : TCollisionComponent(table,
end.Y = floatArr4[3]; end.Y = floatArr4[3];
start.X = floatArr4[4]; start.X = floatArr4[4];
start.Y = floatArr4[5]; start.Y = floatArr4[5];
Line1 = new TLine(this, &ActiveFlag, 1 << static_cast<int>(floor(floatArr4[0])), &start, &end); Line1 = new TLine(this, &ActiveFlag, 1 << static_cast<int>(floor(floatArr4[0])), start, end);
EdgeList.push_back(Line1); EdgeList.push_back(Line1);
if (Line1) if (Line1)
{ {
@ -49,8 +49,8 @@ TRamp::TRamp(TPinballTable* table, int groupIndex) : TCollisionComponent(table,
RampPlane, RampPlane,
RampPlaneCount, RampPlaneCount,
reinterpret_cast<wall_point_type*>(floatArr5WallPoint + 3), reinterpret_cast<wall_point_type*>(floatArr5WallPoint + 3),
&end2, end2,
&start2); start2);
Line2 = new TLine(this, &ActiveFlag, CollisionGroup, start2, end2); Line2 = new TLine(this, &ActiveFlag, CollisionGroup, start2, end2);
EdgeList.push_back(Line2); EdgeList.push_back(Line2);
if (Line2) if (Line2)
@ -67,8 +67,8 @@ TRamp::TRamp(TPinballTable* table, int groupIndex) : TCollisionComponent(table,
RampPlane, RampPlane,
RampPlaneCount, RampPlaneCount,
reinterpret_cast<wall_point_type*>(floatArr6WallPoint + 3), reinterpret_cast<wall_point_type*>(floatArr6WallPoint + 3),
&end3, end3,
&start3); start3);
Line3 = new TLine(this, &ActiveFlag, CollisionGroup, start3, end3); Line3 = new TLine(this, &ActiveFlag, CollisionGroup, start3, end3);
EdgeList.push_back(Line3); EdgeList.push_back(Line3);
if (Line3) if (Line3)
@ -84,20 +84,17 @@ TRamp::TRamp(TPinballTable* table, int groupIndex) : TCollisionComponent(table,
auto xMax = -1000000000.0f; auto xMax = -1000000000.0f;
for (auto index = 0; index < RampPlaneCount; index++) for (auto index = 0; index < RampPlaneCount; index++)
{ {
auto plane = &RampPlane[index]; auto& plane = RampPlane[index];
auto pVec1 = &plane->V1; vector2* pointOrder[4] = { &plane.V1, &plane.V2, &plane.V3, &plane.V1 };
auto pVec2 = &plane->V2;
auto pVec3 = &plane->V3;
xMin = std::min(std::min(std::min(plane->V3.X, plane->V1.X), plane->V2.X), xMin); xMin = std::min(std::min(std::min(plane.V3.X, plane.V1.X), plane.V2.X), xMin);
yMin = std::min(std::min(std::min(plane->V3.Y, plane->V1.Y), plane->V2.Y), xMin); // Sic yMin = std::min(std::min(std::min(plane.V3.Y, plane.V1.Y), plane.V2.Y), xMin); // Sic
xMax = std::max(std::max(std::max(plane->V3.X, plane->V1.X), plane->V2.X), xMin); xMax = std::max(std::max(std::max(plane.V3.X, plane.V1.X), plane.V2.X), xMin);
yMax = std::max(std::max(std::max(plane->V3.Y, plane->V1.Y), plane->V2.Y), xMin); yMax = std::max(std::max(std::max(plane.V3.Y, plane.V1.Y), plane.V2.Y), xMin);
vector2* pointOrder[4] = {pVec1, pVec2, pVec3, pVec1};
for (auto pt = 0; pt < 3; pt++) for (auto pt = 0; pt < 3; pt++)
{ {
auto point1 = pointOrder[pt], point2 = pointOrder[pt + 1]; auto& point1 = *pointOrder[pt], point2 = *pointOrder[pt + 1];
auto collisionGroup = 0; auto collisionGroup = 0;
if (point1 != end2 || point2 != start2) if (point1 != end2 || point2 != start2)
{ {
@ -120,15 +117,15 @@ TRamp::TRamp(TPinballTable* table, int groupIndex) : TCollisionComponent(table,
EdgeList.push_back(line); EdgeList.push_back(line);
if (line) if (line)
{ {
line->WallValue = plane; line->WallValue = &plane;
line->place_in_grid(); line->place_in_grid();
} }
} }
} }
plane->FieldForce.X = cos(plane->GravityAngle2) * sin(plane->GravityAngle1) * plane.FieldForce.X = cos(plane.GravityAngle2) * sin(plane.GravityAngle1) *
PinballTable->GravityDirVectMult; PinballTable->GravityDirVectMult;
plane->FieldForce.Y = sin(plane->GravityAngle2) * sin(plane->GravityAngle1) * plane.FieldForce.Y = sin(plane.GravityAngle2) * sin(plane.GravityAngle1) *
PinballTable->GravityDirVectMult; PinballTable->GravityDirVectMult;
} }

16
SpaceCadetPinball/TTableLayer.cpp
View File

@ -220,45 +220,45 @@ void TTableLayer::edges_insert_circle(circle_type* circle, TEdgeSegment* edge, f
ray.Direction.X = 1.0; ray.Direction.X = 1.0;
ray.Direction.Y = 0.0; ray.Direction.Y = 0.0;
ray.MaxDistance = edge_manager->AdvanceX; ray.MaxDistance = edge_manager->AdvanceX;
if (maths::ray_intersect_circle(&ray, circle) < 1000000000.0f) if (maths::ray_intersect_circle(ray, *circle) < 1000000000.0f)
break; break;
ray.Direction.X = -1.0; ray.Direction.X = -1.0;
ray.Origin.X = ray.Origin.X + edge_manager->AdvanceX; ray.Origin.X = ray.Origin.X + edge_manager->AdvanceX;
if (maths::ray_intersect_circle(&ray, circle) < 1000000000.0f) if (maths::ray_intersect_circle(ray, *circle) < 1000000000.0f)
break; break;
ray.Direction.X = 0.0; ray.Direction.X = 0.0;
ray.Direction.Y = 1.0; ray.Direction.Y = 1.0;
ray.MaxDistance = edge_manager->AdvanceY; ray.MaxDistance = edge_manager->AdvanceY;
if (maths::ray_intersect_circle(&ray, circle) < 1000000000.0f) if (maths::ray_intersect_circle(ray, *circle) < 1000000000.0f)
break; break;
ray.Direction.Y = -1.0; ray.Direction.Y = -1.0;
ray.Origin.Y = ray.Origin.Y + edge_manager->AdvanceY; ray.Origin.Y = ray.Origin.Y + edge_manager->AdvanceY;
if (maths::ray_intersect_circle(&ray, circle) < 1000000000.0f) if (maths::ray_intersect_circle(ray, *circle) < 1000000000.0f)
break; break;
ray.Direction.Y = 0.0; ray.Direction.Y = 0.0;
ray.Direction.X = -1.0; ray.Direction.X = -1.0;
ray.MaxDistance = edge_manager->AdvanceX; ray.MaxDistance = edge_manager->AdvanceX;
if (maths::ray_intersect_circle(&ray, circle) < 1000000000.0f) if (maths::ray_intersect_circle(ray, *circle) < 1000000000.0f)
break; break;
ray.Direction.X = 1.0; ray.Direction.X = 1.0;
ray.Origin.X = ray.Origin.X - edge_manager->AdvanceX; ray.Origin.X = ray.Origin.X - edge_manager->AdvanceX;
if (maths::ray_intersect_circle(&ray, circle) < 1000000000.0f) if (maths::ray_intersect_circle(ray, *circle) < 1000000000.0f)
break; break;
ray.Direction.X = 0.0; ray.Direction.X = 0.0;
ray.Direction.Y = -1.0; ray.Direction.Y = -1.0;
ray.MaxDistance = edge_manager->AdvanceY; ray.MaxDistance = edge_manager->AdvanceY;
if (maths::ray_intersect_circle(&ray, circle) < 1000000000.0f) if (maths::ray_intersect_circle(ray, *circle) < 1000000000.0f)
break; break;
ray.Direction.Y = 1.0; ray.Direction.Y = 1.0;
ray.Origin.Y = ray.Origin.Y - edge_manager->AdvanceY; ray.Origin.Y = ray.Origin.Y - edge_manager->AdvanceY;
if (maths::ray_intersect_circle(&ray, circle) < 1000000000.0f) if (maths::ray_intersect_circle(ray, *circle) < 1000000000.0f)
break; break;
collision = false; collision = false;

411
SpaceCadetPinball/maths.cpp
View File

@ -5,163 +5,125 @@
#include "TFlipperEdge.h" #include "TFlipperEdge.h"
void maths::enclosing_box(rectangle_type* rect1, rectangle_type* rect2, rectangle_type* dstRect) // Performs AABB merge, creating rect that is just large enough to contain both source rects.
void maths::enclosing_box(const rectangle_type& rect1, const rectangle_type& rect2, rectangle_type& dstRect)
{ {
int xPos1 = rect1->XPosition; auto xPos = rect1.XPosition, width = rect1.Width;
int yPos1 = rect1->YPosition; if (rect2.XPosition < rect1.XPosition)
int width1 = rect1->Width;
int height1 = rect1->Height;
int xPos2 = rect2->XPosition;
bool rect2XPosLessRect1 = rect2->XPosition < rect1->XPosition;
int yPos2 = rect2->YPosition;
int width2 = rect2->Width;
int height2 = rect2->Height;
int xPos2_2 = rect2->XPosition;
if (rect2XPosLessRect1)
{ {
width1 += xPos1 - xPos2; xPos = rect2.XPosition;
xPos1 = xPos2; width += rect1.XPosition - rect2.XPosition;
} }
if (yPos2 < yPos1)
auto yPos = rect1.YPosition, height = rect1.Height;
if (rect2.YPosition < rect1.YPosition)
{ {
height1 += yPos1 - yPos2; yPos = rect2.YPosition;
yPos1 = yPos2; height += rect1.YPosition - rect2.YPosition;
} }
if (width2 + xPos2 > xPos1 + width1)
width1 = xPos2_2 + width2 - xPos1; auto xEnd2 = rect2.XPosition + rect2.Width;
int height1_2 = height1; if (xEnd2 > xPos + width)
if (height2 + yPos2 > height1 + yPos1) width = xEnd2 - xPos;
height1_2 = yPos2 + height2 - yPos1;
dstRect->YPosition = yPos1; auto yEnd2 = rect2.YPosition + rect2.Height;
dstRect->Height = height1_2; if (yEnd2 > yPos + height)
dstRect->XPosition = xPos1; height = yEnd2 - yPos;
dstRect->Width = width1;
dstRect.XPosition = xPos;
dstRect.YPosition = yPos;
dstRect.Width = width;
dstRect.Height = height;
} }
// Creates rect that represents an intersection of rect1 and rect2.
int maths::rectangle_clip(rectangle_type* rect1, rectangle_type* rect2, rectangle_type* dstRect) // Return true when intersection exists.
bool maths::rectangle_clip(const rectangle_type& rect1, const rectangle_type& rect2, rectangle_type* dstRect)
{ {
int xPos1 = rect1->XPosition; auto xEnd2 = rect2.XPosition + rect2.Width;
int yPos1 = rect1->YPosition; if (rect2.XPosition >= rect1.XPosition + rect1.Width || rect1.XPosition >= xEnd2)
int height1 = rect1->Height;
int xRight2 = rect2->XPosition + rect2->Width;
int width1 = rect1->Width;
int yRight2 = rect2->YPosition + rect2->Height;
if (xPos1 + width1 < rect2->XPosition)
return 0; return 0;
if (xPos1 >= xRight2)
auto yEnd2 = rect2.YPosition + rect2.Height;
if (rect2.YPosition >= rect1.YPosition + rect1.Height || rect1.YPosition >= yEnd2)
return 0; return 0;
int yPos2 = yPos1;
if (yPos1 + height1 < rect2->YPosition || yPos1 >= yRight2) auto xPos = rect1.XPosition, width = rect1.Width;
return 0; if (rect1.XPosition < rect2.XPosition)
if (xPos1 < rect2->XPosition)
{ {
width1 += xPos1 - rect2->XPosition; xPos = rect2.XPosition;
xPos1 = rect2->XPosition; width += rect1.XPosition - rect2.XPosition;
} }
if (xPos1 + width1 > xRight2)
width1 = xRight2 - xPos1; auto yPos = rect1.YPosition, height = rect1.Height;
int height2 = height1; if (rect1.YPosition < rect2.YPosition)
if (yPos1 < rect2->YPosition)
{ {
height2 = yPos1 - rect2->YPosition + height1; yPos = rect2.YPosition;
yPos2 = rect2->YPosition; height += rect1.YPosition - rect2.YPosition;
} }
if (height2 + yPos2 > yRight2)
height2 = yRight2 - yPos2; if (xPos + width > xEnd2)
if (!width1 || !height2) width = xEnd2 - xPos;
return 0; if (yPos + height > yEnd2)
height = yEnd2 - yPos;
if (width == 0 || height == 0)
return false;
if (dstRect) if (dstRect)
{ {
dstRect->XPosition = xPos1; dstRect->XPosition = xPos;
dstRect->YPosition = yPos2; dstRect->YPosition = yPos;
dstRect->Width = width1; dstRect->Width = width;
dstRect->Height = height2; dstRect->Height = height;
} }
return 1; return true;
} }
// Returns the distance from ray origin to the first ray-circle intersection point.
int maths::overlapping_box(rectangle_type* rect1, rectangle_type* rect2, rectangle_type* dstRect) float maths::ray_intersect_circle(const ray_type& ray, const circle_type& circle)
{
int v3;
int v4;
int v6;
int v7;
if (rect1->XPosition >= rect2->XPosition)
{
dstRect->XPosition = rect2->XPosition;
v3 = rect1->Width - rect2->XPosition;
v4 = rect1->XPosition;
}
else
{
dstRect->XPosition = rect1->XPosition;
v3 = rect2->Width - rect1->XPosition;
v4 = rect2->XPosition;
}
dstRect->Width = v3 + v4 + 1;
int v5 = rect1->YPosition;
if (v5 >= rect2->YPosition)
{
dstRect->YPosition = rect2->YPosition;
v6 = rect1->Height - rect2->YPosition;
v7 = rect1->YPosition;
}
else
{
dstRect->YPosition = v5;
v6 = rect2->Height - rect1->YPosition;
v7 = rect2->YPosition;
}
dstRect->Height = v6 + v7 + 1;
return dstRect->Width <= rect2->Width + rect1->Width && dstRect->Height <= rect2->Height + rect1->Height;
}
float maths::ray_intersect_circle(ray_type* ray, circle_type* circle)
{ {
// O - ray origin // O - ray origin
// D - ray direction // D - ray direction
// C - circle center // C - circle center
// R - circle radius // R - circle radius
// L, C - O, vector between O and C // L, C - O, vector between O and C
float Lx = circle->Center.X - ray->Origin.X; auto L = vector_sub(circle.Center, ray.Origin);
float Ly = circle->Center.Y - ray->Origin.Y;
// Tca, L dot D, projection of L on D // Tca, L dot D, projection of L on D
float Tca = Ly * ray->Direction.Y + Lx * ray->Direction.X; float Tca = DotProduct(L, ray.Direction);
if (Tca < 0.0f) // No intersection if Tca is negative if (Tca < 0.0f) // No intersection if Tca is negative
return 1000000000.0f; return 1000000000.0f;
// L dot L, distance from ray origin to circle center // L dot L, distance from ray origin to circle center
float LMagSq = Ly * Ly + Lx * Lx; float LMagSq = DotProduct(L, L);
// If ray origin is inside of the circle // Thc^2 = rad^2 - d^2; d = sqrt(L dot L - Tca * Tca)
// T0 = Tca - Sqrt(rad^2 - d^2). d = sqrt(L dot L - Tca dot Tca) float ThcSq = circle.RadiusSq - LMagSq + Tca * Tca;
if (LMagSq < circle->RadiusSq)
return Tca - sqrt(circle->RadiusSq - LMagSq + Tca * Tca);
// Thc^2 = rad^2 - d = rad^2 - L dot L + Tca dot Tca
float ThcSq = circle->RadiusSq - LMagSq + Tca * Tca;
if (ThcSq < 0.0f) // No intersection if Thc is negative
return 1000000000.0f;
// T0 = Tca - Thc, distance from origin to first intersection // T0 = Tca - Thc, distance from origin to first intersection
// If ray origin is inside of the circle, then T0 is negative
if (LMagSq < circle.RadiusSq)
return Tca - sqrt(ThcSq);
// No intersection if ThcSq is negative, that is if d > rad
if (ThcSq < 0.0f)
return 1000000000.0f;
// T0 should be positive and less that max ray distance
float T0 = Tca - sqrt(ThcSq); float T0 = Tca - sqrt(ThcSq);
if (T0 < 0.0f || T0 > ray->MaxDistance) if (T0 < 0.0f || T0 > ray.MaxDistance)
return 1000000000.0f; return 1000000000.0f;
return T0; return T0;
} }
float maths::normalize_2d(vector2& vec)
float maths::normalize_2d(vector2* vec)
{ {
float mag = sqrt(vec->X * vec->X + vec->Y * vec->Y); float mag = sqrt(vec.X * vec.X + vec.Y * vec.Y);
if (mag != 0.0f) if (mag != 0.0f)
{ {
vec->X = 1.0f / mag * vec->X; vec.X /= mag;
vec->Y = 1.0f / mag * vec->Y; vec.Y /= mag;
} }
return mag; return mag;
} }
@ -169,93 +131,75 @@ float maths::normalize_2d(vector2* vec)
void maths::line_init(line_type* line, float x0, float y0, float x1, float y1) void maths::line_init(line_type* line, float x0, float y0, float x1, float y1)
{ {
float v9; line->Origin = { x0, y0 };
bool lineDirection;
float v11;
line->Direction.X = x1 - x0; line->Direction.X = x1 - x0;
line->Direction.Y = y1 - y0; line->Direction.Y = y1 - y0;
normalize_2d(&line->Direction); normalize_2d(line->Direction);
line->PerpendicularL.X = line->Direction.Y;
line->PerpendicularL.Y = -line->Direction.X; // Clockwise perpendicular to the line direction vector
line->PreComp1 = -(line->Direction.Y * x0) + line->Direction.X * y0; line->PerpendicularC = { line->Direction.Y, -line->Direction.X };
if (line->Direction.X >= 0.000000001f || line->Direction.X <= -0.000000001f)
{ auto lineStart = x0, lineEnd = x1;
v9 = x1; if (std::abs(line->Direction.X) < 0.000000001f)
lineDirection = x0 >= x1;
v11 = x0;
}
else
{ {
line->Direction.X = 0.0; line->Direction.X = 0.0;
v9 = y1; lineStart = y0;
lineDirection = y0 >= y1; lineEnd = y1;
v11 = y0;
}
if (lineDirection)
{
line->OriginX = v9;
line->OriginY = v11;
}
else
{
line->OriginY = v9;
line->OriginX = v11;
} }
line->MinCoord = std::min(lineStart, lineEnd);
line->MaxCoord = std::max(lineStart, lineEnd);
} }
// Returns the distance from ray origin to the ray-line segment intersection point.
float maths::ray_intersect_line(ray_type* ray, line_type* line) float maths::ray_intersect_line(ray_type* ray, line_type* line)
{ {
bool v5; // V1 vector between ray origin and line origin
bool v6; // V2 ray direction
// V3 line perpendicular clockwise
auto v1 = vector_sub(ray->Origin, line->Origin);
auto v2 = line->Direction;
auto v3 = vector2{ -ray->Direction.Y, ray->Direction.X };
float perpDot = line->PerpendicularL.Y * ray->Direction.Y + ray->Direction.X * line->PerpendicularL.X; // Project line on ray perpendicular, no intersection if ray is pointing away from the line
if (perpDot < 0.0f) auto v2DotV3 = DotProduct(v2, v3);
if (v2DotV3 < 0.0f)
{ {
float result = -((ray->Origin.X * line->PerpendicularL.X + ray->Origin.Y * line->PerpendicularL.Y + line-> // Distance to the intersect point: (V2 X V1) / (V2 dot V3)
PreComp1) auto distance = cross(v2, v1) / v2DotV3;
/ perpDot); if (distance >= -ray->MinDistance && distance <= ray->MaxDistance)
if (result >= -ray->MinDistance && result <= ray->MaxDistance)
{ {
line->RayIntersect.X = result * ray->Direction.X + ray->Origin.X; line->RayIntersect.X = distance * ray->Direction.X + ray->Origin.X;
float v4 = result * ray->Direction.Y + ray->Origin.Y; line->RayIntersect.Y = distance * ray->Direction.Y + ray->Origin.Y;
line->RayIntersect.Y = v4;
if (line->Direction.X == 0.0f) // Check if intersection point is inside line segment
auto testPoint = line->Direction.X != 0.0f ? line->RayIntersect.X : line->RayIntersect.Y;
if (testPoint >= line->MinCoord && testPoint <= line->MaxCoord)
{ {
if (v4 >= line->OriginX) return distance;
{
v5 = v4 < line->OriginY;
v6 = v4 == line->OriginY;
if (v5 || v6)
return result;
return 1000000000.0;
}
}
else if (line->OriginX <= line->RayIntersect.X)
{
float v7 = line->RayIntersect.X;
v5 = v7 < line->OriginY;
v6 = v7 == line->OriginY;
if (v5 || v6)
return result;
return 1000000000.0;
} }
} }
} }
return 1000000000.0; return 1000000000.0;
} }
void maths::cross(vector3* vec1, vector3* vec2, vector3* dstVec) void maths::cross(const vector3& vec1, const vector3& vec2, vector3& dstVec)
{ {
dstVec->X = vec2->Z * vec1->Y - vec2->Y * vec1->Z; dstVec.X = vec2.Z * vec1.Y - vec2.Y * vec1.Z;
dstVec->Y = vec2->X * vec1->Z - vec1->X * vec2->Z; dstVec.Y = vec2.X * vec1.Z - vec1.X * vec2.Z;
dstVec->Z = vec1->X * vec2->Y - vec2->X * vec1->Y; dstVec.Z = vec1.X * vec2.Y - vec2.X * vec1.Y;
} }
float maths::magnitude(vector3* vec) float maths::cross(const vector2& vec1, const vector2& vec2)
{
return vec1.X * vec2.Y - vec1.Y * vec2.X;
}
float maths::magnitude(const vector3& vec)
{ {
float result; float result;
auto magSq = vec->X * vec->X + vec->Y * vec->Y + vec->Z * vec->Z; auto magSq = vec.X * vec.X + vec.Y * vec.Y + vec.Z * vec.Z;
if (magSq == 0.0f) if (magSq == 0.0f)
result = 0.0; result = 0.0;
else else
@ -263,10 +207,15 @@ float maths::magnitude(vector3* vec)
return result; return result;
} }
void maths::vector_add(vector2* vec1Dst, vector2* vec2) void maths::vector_add(vector2& vec1Dst, const vector2& vec2)
{ {
vec1Dst->X += vec2->X; vec1Dst.X += vec2.X;
vec1Dst->Y += vec2->Y; vec1Dst.Y += vec2.Y;
}
vector2 maths::vector_sub(const vector2& vec1, const vector2& vec2)
{
return { vec1.X - vec2.X, vec1.Y - vec2.Y };
} }
float maths::basic_collision(TBall* ball, vector2* nextPosition, vector2* direction, float elasticity, float smoothness, float maths::basic_collision(TBall* ball, vector2* nextPosition, vector2* direction, float elasticity, float smoothness,
@ -285,7 +234,7 @@ float maths::basic_collision(TBall* ball, vector2* nextPosition, vector2* direct
float dy1 = proj * direction->Y; float dy1 = proj * direction->Y;
ball->Acceleration.X = (dx1 + ball->Acceleration.X) * smoothness + dx1 * elasticity; ball->Acceleration.X = (dx1 + ball->Acceleration.X) * smoothness + dx1 * elasticity;
ball->Acceleration.Y = (dy1 + ball->Acceleration.Y) * smoothness + dy1 * elasticity; ball->Acceleration.Y = (dy1 + ball->Acceleration.Y) * smoothness + dy1 * elasticity;
normalize_2d(&ball->Acceleration); normalize_2d(ball->Acceleration);
} }
float projSpeed = proj * ball->Speed; float projSpeed = proj * ball->Speed;
float newSpeed = ball->Speed - (1.0f - elasticity) * projSpeed; float newSpeed = ball->Speed - (1.0f - elasticity) * projSpeed;
@ -294,33 +243,26 @@ float maths::basic_collision(TBall* ball, vector2* nextPosition, vector2* direct
{ {
ball->Acceleration.X = newSpeed * ball->Acceleration.X + direction->X * boost; ball->Acceleration.X = newSpeed * ball->Acceleration.X + direction->X * boost;
ball->Acceleration.Y = newSpeed * ball->Acceleration.Y + direction->Y * boost; ball->Acceleration.Y = newSpeed * ball->Acceleration.Y + direction->Y * boost;
ball->Speed = normalize_2d(&ball->Acceleration); ball->Speed = normalize_2d(ball->Acceleration);
} }
return projSpeed; return projSpeed;
} }
float maths::Distance_Squared(vector2& vec1, vector2& vec2) float maths::Distance_Squared(const vector2& vec1, const vector2& vec2)
{ {
return (vec1.Y - vec2.Y) * (vec1.Y - vec2.Y) + (vec1.X - vec2.X) * (vec1.X - vec2.X); auto dx = vec1.X - vec2.X;
auto dy = vec1.Y - vec2.Y;
return dy * dy + dx * dx;
} }
float maths::DotProduct(vector2* vec1, vector2* vec2) float maths::DotProduct(const vector2& vec1, const vector2& vec2)
{ {
return vec1->Y * vec2->Y + vec1->X * vec2->X; return vec1.X * vec2.X + vec1.Y * vec2.Y;
} }
void maths::vswap(vector2* vec1, vector2* vec2) float maths::Distance(const vector2& vec1, const vector2& vec2)
{ {
vector2 tmp = *vec1; return sqrt(Distance_Squared(vec1, vec2));
*vec1 = *vec2;
*vec2 = tmp;
}
float maths::Distance(vector2* vec1, vector2* vec2)
{
auto dx = vec1->X - vec2->X;
auto dy = vec1->Y - vec2->Y;
return sqrt(dy * dy + dx * dx);
} }
void maths::SinCos(float angle, float* sinOut, float* cosOut) void maths::SinCos(float angle, float* sinOut, float* cosOut)
@ -329,12 +271,12 @@ void maths::SinCos(float angle, float* sinOut, float* cosOut)
*cosOut = cos(angle); *cosOut = cos(angle);
} }
void maths::RotatePt(vector2* point, float sin, float cos, vector2* origin) void maths::RotatePt(vector2& point, float sin, float cos, const vector2& origin)
{ {
auto dirX = point->X - origin->X; auto dirX = point.X - origin.X;
auto dirY = point->Y - origin->Y; auto dirY = point.Y - origin.Y;
point->X = dirX * cos - dirY * sin + origin->X; point.X = dirX * cos - dirY * sin + origin.X;
point->Y = dirX * sin + dirY * cos + origin->Y; point.Y = dirX * sin + dirY * cos + origin.Y;
} }
float maths::distance_to_flipper(ray_type* ray1, ray_type* ray2) float maths::distance_to_flipper(ray_type* ray1, ray_type* ray2)
@ -347,13 +289,13 @@ float maths::distance_to_flipper(ray_type* ray1, ray_type* ray2)
distance = newDistance; distance = newDistance;
distanceType = 0; distanceType = 0;
} }
newDistance = ray_intersect_circle(ray1, &TFlipperEdge::circlebase); newDistance = ray_intersect_circle(*ray1, TFlipperEdge::circlebase);
if (newDistance < distance) if (newDistance < distance)
{ {
distance = newDistance; distance = newDistance;
distanceType = 2; distanceType = 2;
} }
newDistance = ray_intersect_circle(ray1, &TFlipperEdge::circleT1); newDistance = ray_intersect_circle(*ray1, TFlipperEdge::circleT1);
if (newDistance < distance) if (newDistance < distance)
{ {
distance = newDistance; distance = newDistance;
@ -389,15 +331,15 @@ float maths::distance_to_flipper(ray_type* ray1, ray_type* ray2)
dirY = ray2->Origin.Y - TFlipperEdge::circleT1.Center.Y; dirY = ray2->Origin.Y - TFlipperEdge::circleT1.Center.Y;
} }
ray2->Direction.Y = dirY; ray2->Direction.Y = dirY;
normalize_2d(&ray2->Direction); normalize_2d(ray2->Direction);
return distance; return distance;
} }
ray2->Direction = TFlipperEdge::lineB.PerpendicularL; ray2->Direction = TFlipperEdge::lineB.PerpendicularC;
nextOrigin = &TFlipperEdge::lineB.RayIntersect; nextOrigin = &TFlipperEdge::lineB.RayIntersect;
} }
else else
{ {
ray2->Direction = TFlipperEdge::lineA.PerpendicularL; ray2->Direction = TFlipperEdge::lineA.PerpendicularC;
nextOrigin = &TFlipperEdge::lineA.RayIntersect; nextOrigin = &TFlipperEdge::lineA.RayIntersect;
} }
ray2->Origin = *nextOrigin; ray2->Origin = *nextOrigin;
@ -406,20 +348,22 @@ float maths::distance_to_flipper(ray_type* ray1, ray_type* ray2)
return 1000000000.0; return 1000000000.0;
} }
void maths::RotateVector(vector2* vec, float angle) void maths::RotateVector(vector2& vec, float angle)
{ {
float s = sin(angle), c = cos(angle); float s = sin(angle), c = cos(angle);
vec->X = c * vec->X - s * vec->Y; vec.X = c * vec.X - s * vec.Y;
vec->Y = s * vec->X + c * vec->Y; vec.Y = s * vec.X + c * vec.Y;
/* Error in the original, should be: /* Error in the original, should be:
* tmp = c * vec->X - s * vec->Y; * auto newX = c * vec.X - s * vec.Y;
* vec->Y = s * vec->X + c * vec->Y; * vec.Y = s * vec.X + c * vec.Y;
* vec->X = tmp * vec.X = newX;
*/ */
// Original code rotates the point on a figure eight curve.
// Luckily, it is never used with angle always set to 0.
} }
void maths::find_closest_edge(ramp_plane_type* plane, int planeCount, wall_point_type* wall, vector2** lineEnd, void maths::find_closest_edge(ramp_plane_type* planes, int planeCount, wall_point_type* wall, vector2& lineEnd,
vector2** lineStart) vector2& lineStart)
{ {
vector2 wallEnd{}, wallStart{}; vector2 wallEnd{}, wallStart{};
@ -429,35 +373,22 @@ void maths::find_closest_edge(ramp_plane_type* plane, int planeCount, wall_point
wallEnd.X = wall->X1; wallEnd.X = wall->X1;
float maxDistance = 1000000000.0f; float maxDistance = 1000000000.0f;
ramp_plane_type* planePtr = plane;
for (auto index = 0; index < planeCount; index++) for (auto index = 0; index < planeCount; index++)
{ {
auto vec1 = &planePtr->V1, auto& plane = planes[index];
vec2 = &planePtr->V2, vector2* pointOrder[4] = { &plane.V1, &plane.V2, &plane.V3, &plane.V1 };
vec3 = &planePtr->V3;
auto distance = Distance(&wallStart, vec1) + Distance(&wallEnd, vec2);
if (distance < maxDistance)
{
maxDistance = distance;
*lineEnd = vec1;
*lineStart = vec2;
}
distance = Distance(&wallStart, vec2) + Distance(&wallEnd, vec3); for (auto pt = 0; pt < 3; pt++)
if (distance < maxDistance)
{ {
maxDistance = distance; auto& point1 = *pointOrder[pt], point2 = *pointOrder[pt + 1];
*lineEnd = vec2;
*lineStart = vec3;
}
distance = Distance(&wallStart, vec3) + Distance(&wallEnd, vec1); auto distance = Distance(wallStart, point1) + Distance(wallEnd, point2);
if (distance < maxDistance) if (distance < maxDistance)
{ {
maxDistance = distance; maxDistance = distance;
*lineEnd = vec3; lineEnd = point1;
*lineStart = vec1; lineStart = point2;
}
} }
++planePtr;
} }
} }

49
SpaceCadetPinball/maths.h
View File

@ -6,6 +6,15 @@ struct vector2
{ {
float X; float X;
float Y; float Y;
bool operator==(const vector2& vec)
{
return X == vec.X && Y == vec.Y;
}
bool operator!=(const vector2& vec)
{
return X != vec.X || Y != vec.Y;
}
}; };
struct vector3 :vector2 struct vector3 :vector2
@ -40,11 +49,11 @@ struct ray_type
struct line_type struct line_type
{ {
vector2 PerpendicularL; vector2 PerpendicularC;
vector2 Direction; vector2 Direction;
float PreComp1; vector2 Origin;
float OriginX; float MinCoord;
float OriginY; float MaxCoord;
vector2 RayIntersect; vector2 RayIntersect;
}; };
@ -71,27 +80,27 @@ struct ramp_plane_type
class maths class maths
{ {
public: public:
static void enclosing_box(rectangle_type* rect1, rectangle_type* rect2, rectangle_type* dstRect); static void enclosing_box(const rectangle_type& rect1, const rectangle_type& rect2, rectangle_type& dstRect);
static int rectangle_clip(rectangle_type* rect1, rectangle_type* rect2, rectangle_type* dstRect); static bool rectangle_clip(const rectangle_type& rect1, const rectangle_type& rect2, rectangle_type* dstRect);
static int overlapping_box(rectangle_type* rect1, rectangle_type* rect2, rectangle_type* dstRect); static float ray_intersect_circle(const ray_type& ray, const circle_type& circle);
static float ray_intersect_circle(ray_type* ray, circle_type* circle); static float normalize_2d(vector2& vec);
static float normalize_2d(vector2* vec);
static void line_init(line_type* line, float x0, float y0, float x1, float y1); static void line_init(line_type* line, float x0, float y0, float x1, float y1);
static float ray_intersect_line(ray_type* ray, line_type* line); static float ray_intersect_line(ray_type* ray, line_type* line);
static void cross(vector3* vec1, vector3* vec2, vector3* dstVec); static void cross(const vector3& vec1, const vector3& vec2, vector3& dstVec);
static float magnitude(vector3* vec); static float cross(const vector2& vec1, const vector2& vec2);
static void vector_add(vector2* vec1Dst, vector2* vec2); static float magnitude(const vector3& vec);
static void vector_add(vector2& vec1Dst, const vector2& vec2);
static vector2 vector_sub(const vector2& vec1, const vector2& vec2);
static float basic_collision(TBall* ball, vector2* nextPosition, vector2* direction, float elasticity, static float basic_collision(TBall* ball, vector2* nextPosition, vector2* direction, float elasticity,
float smoothness, float smoothness,
float threshold, float boost); float threshold, float boost);
static float Distance_Squared(vector2& vec1, vector2& vec2); static float Distance_Squared(const vector2& vec1, const vector2& vec2);
static float DotProduct(vector2* vec1, vector2* vec2); static float DotProduct(const vector2& vec1, const vector2& vec2);
static void vswap(vector2* vec1, vector2* vec2); static float Distance(const vector2& vec1, const vector2& vec2);
static float Distance(vector2* vec1, vector2* vec2);
static void SinCos(float angle, float* sinOut, float* cosOut); static void SinCos(float angle, float* sinOut, float* cosOut);
static void RotatePt(vector2* point, float sin, float cos, vector2* origin); static void RotatePt(vector2& point, float sin, float cos, const vector2& origin);
static float distance_to_flipper(ray_type* ray1, ray_type* ray2); static float distance_to_flipper(ray_type* ray1, ray_type* ray2);
static void RotateVector(vector2* vec, float angle); static void RotateVector(vector2& vec, float angle);
static void find_closest_edge(ramp_plane_type* plane, int planeCount, wall_point_type* wall, vector2** lineEnd, static void find_closest_edge(ramp_plane_type* plane, int planeCount, wall_point_type* wall, vector2& lineEnd,
vector2** lineStart); vector2& lineStart);
}; };

4
SpaceCadetPinball/nudge.cpp
View File

@ -75,8 +75,8 @@ void nudge::_nudge(float xDiff, float yDiff)
{ {
ball->Acceleration.X = ball->Acceleration.X * ball->Speed; ball->Acceleration.X = ball->Acceleration.X * ball->Speed;
ball->Acceleration.Y = ball->Acceleration.Y * ball->Speed; ball->Acceleration.Y = ball->Acceleration.Y * ball->Speed;
maths::vector_add(&ball->Acceleration, &accelMod); maths::vector_add(ball->Acceleration, accelMod);
ball->Speed = maths::normalize_2d(&ball->Acceleration); ball->Speed = maths::normalize_2d(ball->Acceleration);
if (ball->Acceleration.X == 0.0f) if (ball->Acceleration.X == 0.0f)
invAccelX = 1000000000.0; invAccelX = 1000000000.0;
else else

8
SpaceCadetPinball/pb.cpp
View File

@ -243,7 +243,7 @@ void pb::ballset(float dx, float dy)
TBall* ball = MainTable->BallList.at(0); TBall* ball = MainTable->BallList.at(0);
ball->Acceleration.X = dx * sensitivity; ball->Acceleration.X = dx * sensitivity;
ball->Acceleration.Y = dy * sensitivity; ball->Acceleration.Y = dy * sensitivity;
ball->Speed = maths::normalize_2d(&ball->Acceleration); ball->Speed = maths::normalize_2d(ball->Acceleration);
} }
void pb::frame(float dtMilliSec) void pb::frame(float dtMilliSec)
@ -313,8 +313,8 @@ void pb::timed_frame(float timeNow, float timeDelta, bool drawBalls)
vec2.Y = vec2.Y * timeDelta; vec2.Y = vec2.Y * timeDelta;
ball->Acceleration.X = ball->Speed * ball->Acceleration.X; ball->Acceleration.X = ball->Speed * ball->Acceleration.X;
ball->Acceleration.Y = ball->Speed * ball->Acceleration.Y; ball->Acceleration.Y = ball->Speed * ball->Acceleration.Y;
maths::vector_add(&ball->Acceleration, &vec2); maths::vector_add(ball->Acceleration, vec2);
ball->Speed = maths::normalize_2d(&ball->Acceleration); ball->Speed = maths::normalize_2d(ball->Acceleration);
ball->InvAcceleration.X = ball->Acceleration.X == 0.0f ? 1.0e9f : 1.0f / ball->Acceleration.X; ball->InvAcceleration.X = ball->Acceleration.X == 0.0f ? 1.0e9f : 1.0f / ball->Acceleration.X;
ball->InvAcceleration.Y = ball->Acceleration.Y == 0.0f ? 1.0e9f : 1.0f / ball->Acceleration.Y; ball->InvAcceleration.Y = ball->Acceleration.Y == 0.0f ? 1.0e9f : 1.0f / ball->Acceleration.Y;
} }
@ -623,7 +623,7 @@ float pb::collide(float timeNow, float timeDelta, TBall* ball)
ball->RayMaxDistance = maxDistance; ball->RayMaxDistance = maxDistance;
positionMod.X = maxDistance * ball->Acceleration.X; positionMod.X = maxDistance * ball->Acceleration.X;
positionMod.Y = maxDistance * ball->Acceleration.Y; positionMod.Y = maxDistance * ball->Acceleration.Y;
maths::vector_add(&ball->Position, &positionMod); maths::vector_add(ball->Position, positionMod);
} }
else else
{ {

2
SpaceCadetPinball/proj.cpp
View File

@ -38,7 +38,7 @@ float proj::z_distance(vector3* vec)
{ {
vector3 dstVec{}; vector3 dstVec{};
matrix_vector_multiply(&matrix, vec, &dstVec); matrix_vector_multiply(&matrix, vec, &dstVec);
return maths::magnitude(&dstVec); return maths::magnitude(dstVec);
} }
void proj::xform_to_2d(vector3* vec, int* dst) void proj::xform_to_2d(vector3* vec, int* dst)

12
SpaceCadetPinball/render.cpp
View File

@ -76,15 +76,15 @@ void render::update()
{ {
case VisualTypes::Sprite: case VisualTypes::Sprite:
if (curSprite->DirtyRectPrev.Width > 0) if (curSprite->DirtyRectPrev.Width > 0)
maths::enclosing_box(&curSprite->DirtyRectPrev, &curSprite->BmpRect, &curSprite->DirtyRect); maths::enclosing_box(curSprite->DirtyRectPrev, curSprite->BmpRect, curSprite->DirtyRect);
if (maths::rectangle_clip(&curSprite->DirtyRect, &vscreen_rect, &curSprite->DirtyRect)) if (maths::rectangle_clip(curSprite->DirtyRect, vscreen_rect, &curSprite->DirtyRect))
clearSprite = true; clearSprite = true;
else else
curSprite->DirtyRect.Width = -1; curSprite->DirtyRect.Width = -1;
break; break;
case VisualTypes::None: case VisualTypes::None:
if (maths::rectangle_clip(&curSprite->BmpRect, &vscreen_rect, &curSprite->DirtyRect)) if (maths::rectangle_clip(curSprite->BmpRect, vscreen_rect, &curSprite->DirtyRect))
clearSprite = !curSprite->Bmp; clearSprite = !curSprite->Bmp;
else else
curSprite->DirtyRect.Width = -1; curSprite->DirtyRect.Width = -1;
@ -291,7 +291,7 @@ void render::repaint(struct render_sprite_type_struct* sprite)
{ {
if (!refSprite->UnknownFlag && refSprite->Bmp) if (!refSprite->UnknownFlag && refSprite->Bmp)
{ {
if (maths::rectangle_clip(&refSprite->BmpRect, &sprite->DirtyRect, &clipRect)) if (maths::rectangle_clip(refSprite->BmpRect, sprite->DirtyRect, &clipRect))
zdrv::paint( zdrv::paint(
clipRect.Width, clipRect.Width,
clipRect.Height, clipRect.Height,
@ -334,7 +334,7 @@ void render::paint_balls()
{ {
auto ball = ball_list[index]; auto ball = ball_list[index];
auto dirty = &ball->DirtyRect; auto dirty = &ball->DirtyRect;
if (ball->Bmp && maths::rectangle_clip(&ball->BmpRect, &vscreen_rect, &ball->DirtyRect)) if (ball->Bmp && maths::rectangle_clip(ball->BmpRect, vscreen_rect, &ball->DirtyRect))
{ {
int xPos = dirty->XPosition; int xPos = dirty->XPosition;
int yPos = dirty->YPosition; int yPos = dirty->YPosition;
@ -407,7 +407,7 @@ void render::build_occlude_list()
{ {
if (!refSprite->UnknownFlag if (!refSprite->UnknownFlag
&& refSprite->BoundingRect.Width != -1 && refSprite->BoundingRect.Width != -1
&& maths::rectangle_clip(&mainSprite->BoundingRect, &refSprite->BoundingRect, nullptr) && maths::rectangle_clip(mainSprite->BoundingRect, refSprite->BoundingRect, nullptr)
&& spriteArr) && spriteArr)
{ {
spriteArr->push_back(refSprite); spriteArr->push_back(refSprite);