Merge branch 'martin-t/limit'

[xonotic/xonotic-data.pk3dir.git] / qcsrc / lib / vector.qh

diff --git a/qcsrc/lib/vector.qh b/qcsrc/lib/vector.qh
index 5c016e184b7c6710faed902bff2703b81bd60566..6f419954cc5a333f18b856fc6882586debaa65d3 100644 (file)
--- a/qcsrc/lib/vector.qh
+++ b/qcsrc/lib/vector.qh
@@ -1,23 +1,5 @@
 #pragma once
 
-#include "lib/float.qh"
-#include "lib/misc.qh"
-#include "lib/static.qh"
-
-//pseudo prototypes:
-// vector vec2(vector v); // returns a vector with just the x and y components of the given vector
-// vector vec2(float x, float y); // returns a vector with the given x and y components
-
-noref vector _vec2;
-#define vec2(...) EVAL(OVERLOAD(vec2, __VA_ARGS__))
-#define vec2_1(v) (_vec2 = (v), _vec2.z = 0, _vec2)
-#define vec2_2(x, y) (_vec2_x = (x), _vec2_y = (y), _vec2)
-
-noref vector _vec3;
-#define vec3(_x, _y, _z) (_vec3.x = (_x), _vec3.y = (_y), _vec3.z = (_z), _vec3)
-
-#define VEC_NAN vec3(FLOAT_NAN, FLOAT_NAN, FLOAT_NAN);
-
 noref vector _vlen2;
 #define vlen2(v) (_vlen2 = (v), dotproduct(_vlen2, _vlen2))
 
@@ -87,18 +69,6 @@ float vlen_minnorm2d(vector v)
        return min(max(v.x, -v.x), max(v.y, -v.y));
 }
 
-ERASEABLE
-float dist_point_line(vector p, vector l0, vector ldir)
-{
-       ldir = normalize(ldir);
-
-       // remove the component in line direction
-       p = p - (p * ldir) * ldir;
-
-       // vlen of the remaining vector
-       return vlen(p);
-}
-
 /** requires that m2>m1 in all coordinates, and that m4>m3 */
 ERASEABLE
 float boxesoverlap(vector m1, vector m2, vector m3, vector m4) { return m2_x >= m3_x && m1_x <= m4_x && m2_y >= m3_y && m1_y <= m4_y && m2_z >= m3_z && m1_z <= m4_z; }
@@ -111,43 +81,24 @@ float boxinsidebox(vector smins, vector smaxs, vector bmins, vector bmaxs) { ret
 #define YAW(v) ((v).y)
 #define ROLL(v) ((v).z)
 
-#ifdef GAMEQC
-STATIC_INIT(globals) {
-       // set to NaN to more easily detect uninitialized use
-       v_forward = VEC_NAN;
-       v_right = VEC_NAN;
-       v_up = VEC_NAN;
-}
-#endif
+//pseudo prototypes:
+// vector vec2(vector v); // returns a vector with just the x and y components of the given vector
+// vector vec2(float x, float y); // returns a vector with the given x and y components
+
+noref vector _vec2;
+#define vec2(...) EVAL(OVERLOAD(vec2, __VA_ARGS__))
+#define vec2_1(v) (_vec2 = (v), _vec2.z = 0, _vec2)
+#define vec2_2(x, y) (_vec2_x = (x), _vec2_y = (y), _vec2)
+
+noref vector _vec3;
+#define vec3(_x, _y, _z) (_vec3.x = (_x), _vec3.y = (_y), _vec3.z = (_z), _vec3)
+
+#define VEC_NAN vec3(FLOAT_NAN, FLOAT_NAN, FLOAT_NAN);
 
-/// Same as the `makevectors` builtin but uses the provided locals instead of the `v_*` globals.
-/// Always use this instead of raw `makevectors` to make the data flow clear.
-/// It's 2018, they even teach that globals are bad at my uni... though for some reason they never explained why. Sigh.
-#define MAKEVECTORS(angles, forward, right, up) MACRO_BEGIN { \
-       makevectors(angles); \
-       forward = v_forward; \
-       right = v_right; \
-       up = v_up; \
-       v_forward = VEC_NAN; \
-       v_right = VEC_NAN; \
-       v_up = VEC_NAN; \
-} MACRO_END
-
-// Same as `MAKEVECTORS` but also creates the locals for convenience.
-#define MAKEVECTORS_NEW(angles, forward, right, up) \
-       vector forward = '0 0 0'; \
-       vector right = '0 0 0'; \
-       vector up = '0 0 0'; \
-       MAKEVECTORS(angles, forward, right, up);
-
-// TODO when raw makevectors and similar functions are not used anywhere else anymore,
-// assert that the global vectors are NaN before calling makevectors in MAKEVECTORS
-// to make sure nobody (even builtins) is accidentally using them - NaN is the most liekly value to expose values clearly
-// also uncomment these:
-//#define makevectors DO_NOT_USE_GLOBALS
-//#define v_forward DO_NOT_USE_GLOBALS
-//#define v_right DO_NOT_USE_GLOBALS
-//#define v_up DO_NOT_USE_GLOBALS
+ERASEABLE
+bool is_all_nans(vector v) {
+       return isnan(v.x) && isnan(v.y) && isnan(v.z);
+}
 
 ERASEABLE
 vector Rotate(vector v, float a)
@@ -159,6 +110,19 @@ vector Rotate(vector v, float a)
 noref vector _yinvert;
 #define yinvert(v) (_yinvert = (v), _yinvert.y = 1 - _yinvert.y, _yinvert)
 
+/// \param[in] p point
+/// \param[in] l0 starting point of ldir
+/// \param[in] ldir line
+/// \return Vector starting from p perpendicular to ldir
+ERASEABLE
+vector point_line_vec(vector p, vector l0, vector ldir)
+{
+       ldir = normalize(ldir);
+       p = l0 - p;
+       // remove the component in line direction from p
+       return p - ((p * ldir) * ldir);
+}
+
 /**
  * @param dir the directional vector
  * @param norm the normalized normal