beam system overhaul

git-svn-id: https://svn.code.sf.net/p/fteqw/code/trunk@333 fc73d0e0-1445-4013-8a0c-d673dee63da5

engine/client/cl_ents.c

@@ -1068,7 +1068,15 @@ void CL_LinkPacketEntities (void)
 		}
 		if (i == cl_oldnumvisedicts)
 		{
-			cl.lerpents[s1->number].trailstate.lastdist = 0;
+			trailstate_t *t;
+			t = &cl.lerpents[s1->number].trailstate;
+			t->lastdist = 0;
+			if (t->lastbeam)
+			{
+				t->lastbeam->flags &= ~BS_LASTSEG;
+				t->lastbeam->flags |= BS_NODRAW;
+			}
+			t->lastbeam = NULL;
 			continue;		// not in last message
 		}
 

engine/client/render.h

@@ -192,10 +192,13 @@ void MediaSW_ShowFrameBGR_24_Flip(qbyte *framedata, int inwidth, int inheight);
 void R_ParseParticleEffect (void);
 void R_RunParticleEffect (vec3_t org, vec3_t dir, int color, int count);
 
+typedef struct beamseg_s beamseg_t;
+
 typedef struct {
 	float lastdist;
 	vec3_t lastorg;	//use only if lastdist
 	vec3_t lastdir;	//use only if lastdist
+	beamseg_t *lastbeam; // last beam point
 } trailstate_t;
 void R_RocketTrail (vec3_t start, vec3_t end, int type, trailstate_t *oldpoint);
 int R_RunParticleEffectType(vec3_t org, vec3_t dir, float count, int type);

engine/common/particles.h

@@ -62,10 +62,11 @@ typedef struct particle_s
 			float		rotationspeed;
 			float		nextemit;
 		} p;	//point blob
-		struct {
+/*		struct {
 			vec3_t		org2;
 			vec3_t		lastdir;
-		} b;	//beam
+		} b;
+		*/
 	} u;
 
 // drivers never touch the following fields
@@ -74,6 +75,18 @@ typedef struct particle_s
 	float		die;
 } particle_t;
 
+#define BS_LASTSEG 0x1 // no draw to next, no delete
+#define BS_DEAD    0x2 // segment is dead
+#define BS_NODRAW  0x4 // only used for lerp switching
+
+typedef struct beamseg_s
+{
+	particle_t *p; 
+	struct beamseg_s *next;  // next in beamseg list
+	int    flags;            // flags for beamseg
+	vec3_t dir;
+} beamseg_t;
+
 #define PARTICLE_Z_CLIP	8.0
 
 #define frandom() (rand()*(1.0f/RAND_MAX))