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- added DavidPH's A_FaceTarget with pitch submission.

Browse source 
SVN r3528 (trunk)
This commit is contained in:
Christoph Oelckers 2012-04-07 12:48:56 +00:00
parent 83620fca1f
commit 3aa759714a
4 changed files with 68 additions and 17 deletions
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73
src/p_enemy.cpp
View file

@ -2726,7 +2726,7 @@ void A_Chase(AActor *self)
// A_FaceTracer
//
//=============================================================================
void A_Face (AActor *self, AActor *other, angle_t max_turn)
void A_Face (AActor *self, AActor *other, angle_t max_turn, angle_t max_pitch)
{
if (!other)
return;
@ -2773,6 +2773,50 @@ void A_Face (AActor *self, AActor *other, angle_t max_turn)
self->angle = other_angle;
}
// [DH] Now set pitch. In order to maintain compatibility, this can be
// disabled and is so by default.
if (max_pitch <= ANGLE_180)
{
// [DH] Don't need to do proper fixed->double conversion, since the
// result is only used in a ratio.
double dist_x = self->target->x - self->x;
double dist_y = self->target->y - self->y;
double dist_z = self->target->z - self->z;
double dist = sqrt(dist_x*dist_x + dist_y*dist_y + dist_z*dist_z);
angle_t other_pitch = rad2bam(asin(dist_z / dist));
if (max_pitch && (max_pitch < (angle_t)abs(self->pitch - other_pitch)))
{
if (self->pitch > other_pitch)
{
if (self->pitch - other_pitch < ANGLE_180)
{
self->pitch -= max_pitch;
}
else
{
self->pitch += max_pitch;
}
}
else
{
if (other_pitch - self->pitch < ANGLE_180)
{
self->pitch += max_pitch;
}
else
{
self->pitch -= max_pitch;
}
}
}
else
{
self->pitch = other_pitch;
}
}
// This will never work well if the turn angle is limited.
if (max_turn == 0 && (self->angle == other_angle) && other->flags & MF_SHADOW && !(self->flags6 & MF6_SEEINVISIBLE) )
{
@ -2780,43 +2824,46 @@ void A_Face (AActor *self, AActor *other, angle_t max_turn)
}
}
void A_FaceTarget (AActor *self, angle_t max_turn)
void A_FaceTarget (AActor *self, angle_t max_turn, angle_t max_pitch)
{
A_Face(self, self->target, max_turn);
A_Face(self, self->target, max_turn, max_pitch);
}
void A_FaceMaster (AActor *self, angle_t max_turn)
void A_FaceMaster (AActor *self, angle_t max_turn, angle_t max_pitch)
{
A_Face(self, self->master, max_turn);
A_Face(self, self->master, max_turn, max_pitch);
}
void A_FaceTracer (AActor *self, angle_t max_turn)
void A_FaceTracer (AActor *self, angle_t max_turn, angle_t max_pitch)
{
A_Face(self, self->tracer, max_turn);
A_Face(self, self->tracer, max_turn, max_pitch);
}
DEFINE_ACTION_FUNCTION_PARAMS(AActor, A_FaceTarget)
{
ACTION_PARAM_START(1);
ACTION_PARAM_START(2);
ACTION_PARAM_ANGLE(max_turn, 0);
ACTION_PARAM_ANGLE(max_pitch, 1);
A_FaceTarget(self, max_turn);
A_FaceTarget(self, max_turn, max_pitch);
}
DEFINE_ACTION_FUNCTION_PARAMS(AActor, A_FaceMaster)
{
ACTION_PARAM_START(1);
ACTION_PARAM_START(2);
ACTION_PARAM_ANGLE(max_turn, 0);
ACTION_PARAM_ANGLE(max_pitch, 1);
A_FaceMaster(self, max_turn);
A_FaceMaster(self, max_turn, max_pitch);
}
DEFINE_ACTION_FUNCTION_PARAMS(AActor, A_FaceTracer)
{
ACTION_PARAM_START(1);
ACTION_PARAM_START(2);
ACTION_PARAM_ANGLE(max_turn, 0);
ACTION_PARAM_ANGLE(max_pitch, 1);
A_FaceTracer(self, max_turn);
A_FaceTracer(self, max_turn, max_pitch);
}
//===========================================================================

2
src/p_enemy.h
View file

@ -72,7 +72,7 @@ DECLARE_ACTION(A_FreezeDeathChunks)
DECLARE_ACTION(A_BossDeath)
void A_Chase(AActor *self);
void A_FaceTarget (AActor *actor, angle_t max_turn = 0);
void A_FaceTarget (AActor *actor, angle_t max_turn = 0, angle_t max_pitch = ANGLE_270);
bool A_RaiseMobj (AActor *, fixed_t speed);
bool A_SinkMobj (AActor *, fixed_t speed);

4
src/tables.h
View file

@ -109,5 +109,9 @@ inline double bam2rad(angle_t ang)
{
return double(ang >> 1) * (PI / ANGLE_90);
}
inline angle_t rad2bam(double ang)
{
return angle_t(ang * (double(1<<30) / PI)) << 1;
}
#endif // __TABLES_H__

6
wadsrc/static/actors/actor.txt
View file

@ -69,9 +69,9 @@ ACTOR Actor native //: Thinker
action native A_XScream();
action native A_Look();
action native A_Chase(state melee = "*", state missile = "none", int flags = 0);
action native A_FaceTarget(float max_turn = 0);
action native A_FaceTracer(float max_turn = 0);
action native A_FaceMaster(float max_turn = 0);
action native A_FaceTarget(float max_turn = 0, float max_pitch = 270);
action native A_FaceTracer(float max_turn = 0, float max_pitch = 270);
action native A_FaceMaster(float max_turn = 0, float max_pitch = 270);
action native A_PosAttack();
action native A_Scream();
action native A_SPosAttack();