WEAPON_GAUSS: Fix missing ammo deduction for primary fire, add a decal

for first-impact under high-energy mode.

src/shared/fx_gaussbeam.qc

@@ -135,6 +135,9 @@ FX_GaussBeam(vector vecPos, vector vecAngle, int numBeams, entity eOwner)
 	vector vecSrc;
 	vector vecEndPos;
 	vector vecDir;
+	vector vecFirstImpact;
+	int totalBeams = numBeams;
+
 	makevectors(vecAngle);
 	vecDir = v_forward;
 	vecSrc = vecPos;
@@ -143,6 +146,10 @@ FX_GaussBeam(vector vecPos, vector vecAngle, int numBeams, entity eOwner)
 	trailparticles(TRAIL_GAUSSBEAM, eOwner, vecSrc + (v_right * 8) + (v_up * -12), trace_endpos);
 	FX_GaussBeam_Piece(trace_endpos, vecDir * -1);
 
+	/* Decals_Place modifies trace_* globals, so cache */
+	if (totalBeams > 1)
+		vecFirstImpact = trace_endpos;
+
 	vecDir = v_forward;
 	while (numBeams > 0) {
 		float n;
@@ -164,6 +171,10 @@ FX_GaussBeam(vector vecPos, vector vecAngle, int numBeams, entity eOwner)
 				break;
 			}
 	}
+
+	/* higher energy means the first impact will leave a hole as well */
+	if (totalBeams > 1)
+		Decals_Place(vecFirstImpact, "{gaussshot1");
 #endif
 }
 

src/shared/w_gauss.qc

@@ -172,6 +172,8 @@ void w_gauss_primary(void)
 	FX_GaussBeam(Weapons_GetCameraPos(), input_angles, 0, pl);
 #endif
 
+	pl.ammo_uranium -= 2;
+
 	if (self.flags & FL_CROUCHING)
 		Animation_PlayerTop(pl, ANIM_CR_SHOOTGAUSS, 0.43f);
 	else