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tilted and rotated clip entities

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Attribute 7 of clip- and plclip-entities now allows four different shapes
for the clips:

  0: basic rectangular (like in older AC versions)
  1: tilted in direction of x-axis
  2: tilted in direction of y-axis
  3: rotated by 45 degrees

The shapes 1 and 2 use the value of attr6 as slope angle.

The player only can walk upwards a tilted clip, if the height (attr4) is
at least 0.6 cubes. Slopes steeper than 5.0 can not be walked up (same
maximum step size as for sloped map geometry).

Mappers, please keep in mind: especially tilted clips are more expensive
than regular clips, but they are much cheaper than stairs built from a
bunch of regular clips. Large and small clips cost exactly the same, so
try to combine clips to keep the total number down.
This commit is contained in:
ac-stef
2015-05-27 15:47:05 +02:00
parent 8fa90bef67
commit edd94fb931
4 changed files with 54 additions and 26 deletions
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source/src/entities.cpp
+27 -17
View File
@@ -28,9 +28,28 @@ void renderent(entity &e)
void renderclip(entity &e)
{
float xradius = max(float(e.attr2) / ENTSCALE5, 0.1f), yradius = max(float(e.attr3) / ENTSCALE5, 0.1f);
float xradius = max(float(e.attr2) / ENTSCALE5, 0.05f), yradius = max(float(e.attr3) / ENTSCALE5, 0.05f), h = max(float(e.attr4) / ENTSCALE5, 0.1f);
vec bbmin(e.x - xradius, e.y - yradius, float(S(e.x, e.y)->floor + float(e.attr1) / ENTSCALE10)),
bbmax(e.x + xradius, e.y + yradius, bbmin.z + max(float(e.attr4) / ENTSCALE5, 0.1f));
bbmax(e.x + xradius, e.y + yradius, bbmin.z + h);
vec bb[4];
loopi(4) bb[i] = bbmin;
bb[2].x = bb[1].x = bbmax.x;
bb[2].y = bb[3].y = bbmax.y;
vec o(e.x, e.y, bbmin.z);
float tx = 0, ty = 0, angle = 0;
switch(e.attr7 & 3)
{
case 1: tx = float(e.attr6) / (4 * ENTSCALE10); break; // tilt x
case 2: ty = float(e.attr6) / (4 * ENTSCALE10); break; // tilt y
case 3: angle = PI/4; break; // rotate 45°
}
loopi(4)
{
bb[i].sub(o).rotate_around_z(angle); // rotate
bb[i].z += bb[i].x * tx + bb[i].y * ty; // tilt
bb[i].add(o);
}
glDisable(GL_TEXTURE_2D);
switch(e.type)
@@ -40,21 +59,12 @@ void renderclip(entity &e)
case PLCLIP: linestyle(1, 0xFF, 0, 0xFF); break; // magenta
}
glBegin(GL_LINES);
glVertex3f(bbmin.x, bbmin.y, bbmin.z);
loopi(2) glVertex3f(bbmax.x, bbmin.y, bbmin.z);
loopi(2) glVertex3f(bbmax.x, bbmax.y, bbmin.z);
loopi(2) glVertex3f(bbmin.x, bbmax.y, bbmin.z);
glVertex3f(bbmin.x, bbmin.y, bbmin.z);
glVertex3f(bbmin.x, bbmin.y, bbmax.z);
loopi(2) glVertex3f(bbmax.x, bbmin.y, bbmax.z);
loopi(2) glVertex3f(bbmax.x, bbmax.y, bbmax.z);
loopi(2) glVertex3f(bbmin.x, bbmax.y, bbmax.z);
glVertex3f(bbmin.x, bbmin.y, bbmax.z);
loopi(8) glVertex3f(i&2 ? bbmax.x : bbmin.x, i&4 ? bbmax.y : bbmin.y, i&1 ? bbmax.z : bbmin.z);
loopi(16)
{
int j = ((i + 1) % 8) / 2;
glVertex3f(bb[j].x, bb[j].y, bb[j].z + (i > 7 ? h : 0));
}
loopi(8) glVertex3f(bb[i / 2].x, bb[i / 2].y, bb[i / 2].z + (i & 1 ? h : 0));
glEnd();
glEnable(GL_TEXTURE_2D);
}