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Code Issues Releases Wiki Activity

make RenderObject::rotation not modified during rendering, simplify duplicated code

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This commit is contained in:
fgenesis 2023-03-02 02:31:16 +01:00
parent f4147b99c4
commit 76ba2b1211
2 changed files with 21 additions and 26 deletions
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43
BBGE/RenderObject.cpp
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@ -462,26 +462,25 @@ void RenderObject::render(const RenderState& rs) const
if (MotionBlurData *mb = this->motionBlur)
{
RenderState rx(rs);
const float oldRotZ = rotation.z;
const size_t sz = mb->positions.size();
const float m = 1.0f / float(sz);
const float m2 = alpha.x * 0.5f * (mb->transition ? mb->transitionTimer : 1.0f);
for (size_t i = 0; i < sz; i++)
{
const Vector& renderAt = mb->positions[i].position;
rotation.z = mb->positions[i].rotz;
const float renderRotation = mb->positions[i].rotz;
rx.alpha = (1.0f-(float(i) * m)) * m2;
renderCall(rx, renderAt);
renderCall(rx, renderAt, renderRotation);
}
rotation.z = oldRotZ;
}
renderCall(rs, position);
renderCall(rs, position, rotation.z);
}
void RenderObject::renderCall(const RenderState& rs, const Vector& renderAt) const
void RenderObject::renderCall(const RenderState& rs, const Vector& renderAt, float renderRotation) const
{
const Vector renderPos = renderAt + offset;
renderRotation += rotationOffset.z;
glPushMatrix();
@ -501,26 +500,24 @@ void RenderObject::renderCall(const RenderState& rs, const Vector& renderAt) con
glLoadIdentity();
glScalef(core->globalResolutionScale.x, core->globalResolutionScale.y,0);
glTranslatef(renderPos.x, renderPos.y, renderPos.z);
if (isfh())
{
glRotatef(180, 0, 1, 0);
}
glRotatef(rotation.z+rotationOffset.z, 0, 0, 1);
}
else
{
Vector pos = getFollowCameraPosition();
glTranslatef(pos.x, pos.y, pos.z);
if (isfh())
{
glRotatef(180, 0, 1, 0);
}
glRotatef(rotation.z+rotationOffset.z, 0, 0, 1);
}
// FIXME: this is the reason why tiles on parallax layers rotate in the wrong direction!
// Unfortunately the maps were built with this in mind, so before this can be taken out
// and replaced with the correct version (below), the rotation needs to be fixed up somehow.
// Not sure yet how to do this. Fix maps on load?
// Add a map flag "hasCorrectParallaxRotation" and an editor feature to rotate tiles and set this flag?
// Probably want editor compatibility with old versions so the incorrect behavior
// needs to be the default if nothing is specified.
// What a mess. Sigh. -- FG
if (isfh())
glRotatef(180, 0, 1, 0);
glRotatef(renderRotation, 0, 0, 1);
}
else
{
@ -558,12 +555,10 @@ void RenderObject::renderCall(const RenderState& rs, const Vector& renderAt) con
glEnd();
}
glRotatef(rotation.z+rotationOffset.z, 0, 0, 1);
// This is the correct way to rotate things.
glRotatef(renderRotation, 0, 0, 1);
if (isfh())
{
glRotatef(180, 0, 1, 0);
}
}
glTranslatef(beforeScaleOffset.x, beforeScaleOffset.y, beforeScaleOffset.z);

4
BBGE/RenderObject.h
View file

@ -255,7 +255,7 @@ public:
InterpolatedVector position;
InterpolatedVector scale;
InterpolatedVector color, alpha;
mutable InterpolatedVector rotation;
InterpolatedVector rotation;
InterpolatedVector offset, rotationOffset, internalOffset, beforeScaleOffset;
InterpolatedVector velocity, gravity;
@ -301,7 +301,7 @@ protected:
// Is this object or any of its children rendered in pass "pass"?
bool hasRenderPass(const int pass) const;
inline void renderCall(const RenderState& rs, const Vector& renderAt) const;
inline void renderCall(const RenderState& rs, const Vector& renderAt, float renderRotation) const;
virtual void renderCollision(const RenderState& rs) const;
typedef std::list<RenderObject*> RenderObjectList;