2 #include "lib/static.qh"
3 #include "lib/vector.qh"
5 // These macros wrap functions which use globals so mutation only occurs inside them and is not visible from outside.
6 // Functions for which all usages are replaced with these macros can be hidden inside our `*defs.qh` files
7 // to prevent anyone from using them accidentally.
9 // TODO stuff in the engine that uses the v_forward/v_right/v_up globals and is not wrapped yet:
10 // - RF_USEAXIS, addentities, predraw,
11 // - CL_GetEntityMatrix (in engine but is called from other functions so transitively any of them can use the globals - e.g. V_CalcRefdef, maybe others)
12 // - however RF_USEAXIS is only used if MF_ROTATE is used which is only set in one place
13 // - e.camera_transform / CL_VM_TransformView (in engine
14 // - this is the only used function that both sets and gets the globals (aim does too but isn't used in our code)
18 #define NEW_VECS(...) EVAL(OVERLOAD(NEW_VECS, __VA_ARGS__))
19 #define NEW_VECS_3(forward, right, up) vector forward = '0 0 0'; vector right = '0 0 0'; vector up = '0 0 0';
20 #define NEW_VECS_4(forward, right, up, origin) NEW_VECS_3(forward, right, up); vector origin = '0 0 0';
22 #define CLEAR_V_GLOBALS() v_forward = VEC_NAN; v_right = VEC_NAN; v_up = VEC_NAN;
23 #define GET_V_GLOBALS(forward, right, up) forward = v_forward; right = v_right; up = v_up;
24 #define SET_V_GLOBALS(forward, right, up) v_forward = forward; v_right = right; v_up = up;
27 STATIC_INIT(globals) {
28 // set to NaN to more easily detect uninitialized use
29 // TODO when all functions are wrapped and the raw functions are not used anymore,
30 // uncomment the defines in *progs.qh files that hide the raw functions
31 // and assert that the global vectors are NaN before calling the raw functions here
32 // to make sure nobody (even builtins) is accidentally using them - NaN is the most likely value to expose remaining usages
34 // TODO make sure `isnan` actually works - potential compiler bug:
35 //LOG_INFOF("%f\n", 0.0/0.0 == 0.0/0.0);
36 //LOG_INFOF("%f\n", 0.0/0.0 != 0.0/0.0);
38 //LOG_INFOF("%f\n", x == x);
39 //LOG_INFOF("%f\n", x != x);
45 /// Same as the `makevectors` builtin but uses the provided locals instead of the `v_*` globals.
46 /// Always use this instead of raw `makevectors` to make the data flow clear.
47 #define MAKE_VECTORS(angles, forward, right, up) MACRO_BEGIN { \
48 _makevectors_hidden(angles); \
49 GET_V_GLOBALS(forward, right, up); \
53 /// Same as `MAKE_VECTORS` but also creates the locals for convenience.
54 #define MAKE_VECTORS_NEW(angles, forward, right, up) \
55 NEW_VECS(forward, right, up); \
56 MAKE_VECTORS(angles, forward, right, up);
58 /// Returns all 4 vectors by assigning to them (instead of returning a value) for consistency (and sanity)
59 #define SKEL_GET_BONE_ABS(skel, bonenum, forward, right, up, origin) MACRO_BEGIN { \
60 origin = _skel_get_boneabs_hidden(skel, bonenum) \
61 GET_V_GLOBALS(forward, right, up); \
65 #define SKEL_GET_BONE_ABS_NEW(skel, bonenum, forward, right, up, origin) \
66 NEW_VECS(forward, right, up, origin); \
67 SKEL_GET_BONE_ABS(skel, bonenum, forward, right, up, origin)
69 #define SKEL_SET_BONE(skel, bonenum, org, forward, right, up) MACRO_BEGIN { \
70 SET_V_GLOBALS(forward, right, up); \
71 _skel_set_bone_hidden(skel, bonenum, org); \
75 #define VECTOR_VECTORS(forward_in, forward, right, up) MACRO_BEGIN { \
76 _vectorvectors_hidden(forward_in); \
77 GET_V_GLOBALS(forward, right, up); \
81 #define VECTOR_VECTORS_NEW(forward_in, forward, right, up) \
82 NEW_VECS(forward, right, up); \
83 VECTOR_VECTORS(forward_in, forward, right, up);
85 /// Note that this only avoids the v_* globals, not the gettaginfo_* ones
86 #define GET_TAG_INFO(ent, tagindex, forward, right, up, origin) MACRO_BEGIN { \
87 origin = _gettaginfo_hidden(ent, tagindex); \
88 GET_V_GLOBALS(forward, right, up); \
92 #define GET_TAG_INFO_NEW(ent, tagindex, forward, right, up, origin) \
93 NEW_VECS(forward, right, up, origin); \
94 GET_TAG_INFO(ent, tagindex, forward, right, up, origin);