This probably enlarges the maximum landscape height for borderbound objects.
The "infinity" constant +1000000 is larger than the biggest C4Fixed, so
would have been truncated to 16960.
The C++ standard library comes with perfectly fine implementations of
these functions, so there's no point in reimplementing them just for the
hell of it.
Instead of Y - Hgt > LandscapeHeight (or, equivalently, Y > LandscapeHeight + Hgt), it was checked for Y + Hgt > LandscapeHeight, which would remove objects too early.
This will allow better graphics for the clouds movement when wrapping the landscape.
There is some potential for weird behavior; e.g. objects hidden just out of view outside the landscape. But we don't have any goals like Clonk Rage gold mine where you would have to find that nugget lying hidden in that place. Besides, the current behavior of just removing stuff even though it was just halfway out is worse.
Selecting a GL context during SolidMask initialization is not a very good solution. But as long as SolidMasks are stored in graphics surface we have no choice.
A better solution would be to generate a dedicated (non-OpengL) surface for SolidMask data on object loading. But then objects that have SolidMasks would need to be tagged somehow.
As discussed in http://forum.openclonk.org/topic_show.pl?tid=2917, I
have merged all copyright notices into a single file and referenced that
merged file from each source file.
For the updated source files, the timeline has been split into three
parts:
1. Pre-RWD code (before 2001)
2. RWD code (2001 through 2009)
3. OpenClonk code (2009 and later)
All pre-RWD copyright notices have been left intact, as have RWD-era
copyright notices where the file did not have a RedWolf design copyright
notice but only individual author ones. All copyright notices of the
OpenClonk era have been replaced by a single notice ranging from the
first recorded year to the current year (2013). Mape code did not get a
OpenClonk Team copyright notice because it is somewhat separate from the
main OpenClonk codebase and has only been touched by Armin Burgmeier.
Movement is done in single-pixel or single-degree steps, until the
rounded position that's used for collision detection is equal to
the target. The underlying position is maintained with subpixel
precision as much as possible, however.
Rotating attached objects can move them, but for unattached objects this
would only reset them to the same pixel position there were at, but without
the subpixel fraction.
Rotation was still stored as an integer and as a fixed point number.
Compute the integer on demand from the fixed point instead, like the
position. Rewrite the movement code where the two variables were
temporarily out of sync.
In no-gravity situations, SimFlight would enter an endless
loop when trying to project an unmoving object, waiting for
a collision that would never happen.
Similarly, in negative gravity, SimFlight would continue
calculating objects that left the top boundary of the land-
scape, only aborting the simulation once the coordinates
underflowed to values below the landscape.
Conceptually, the landscape stretches infinitely on both left and right hand
borders of the map. So far, the "closed" part of the border only blocked objects
from passing through. (Additionally, there was a bug where you could scale the
border under certain circumstances.) This patch allows objects to properly
move around on the map borders, including scaling the fake terrain.
Instead of teleporting from sticking with the left/rightmost vertex to the
want to standing on the lowest one at the same position, the Clonk can now
climb using the lowest vertex alone. That means the teleport only needs to
cover only one pixel each in x and y direction to go from sticking to the
side of the landscape pixel to sticking on top of the same pixel.
Also remove some unnecessary x/ydir resets and make comdir in the direction
of the wall the Clonk is scaling keep the up/down direction instead of only
going up.
Maikel de Vries