Merge branch 'fix-shakes' into 'master'

Some quake improvements

See merge request KartKrew/Kart!1523

src/k_collide.cpp

@@ -305,7 +305,7 @@ static inline BlockItReturn_t PIT_SSMineExplode(mobj_t *thing)
 
 	lagadded = (thing->hitlag - oldhitlag);
 
-	if (lagadded > 0)
+	if (lagadded > minehitlag)
 	{
 		minehitlag = lagadded;
 	}
@@ -337,19 +337,17 @@ tic_t K_MineExplodeAttack(mobj_t *actor, fixed_t size, boolean spin)
 	// Set this flag to ensure that the inital action won't be triggered twice.
 	actor->flags2 |= MF2_DEBRIS;
 
+	if (minehitlag == 0)
+	{
+		minehitlag = actor->hitlag;
+	}
+
 	// Set this flag to ensure the hitbox timer doesn't get extended with every player hit
 	actor->flags |= MF_NOHITLAGFORME;
 	actor->hitlag = 0; // same deal
 
 	if (!spin)
 	{
-		if (minehitlag == 0)
-		{
-			minehitlag = actor->hitlag;
-		}
-
-		Obj_SpawnBrolyKi(actor, minehitlag);
-
 		return minehitlag;
 	}
 

src/k_kart.c

@@ -4499,6 +4499,11 @@ void K_MineFlashScreen(mobj_t *source)
 	INT32 pnum;
 	player_t *p;
 
+	if (P_MobjWasRemoved(source))
+	{
+		return;
+	}
+
 	S_StartSound(source, sfx_s3k4e);
 	P_StartQuakeFromMobj(12, 55 * source->scale, MINEQUAKEDIST * source->scale, source);
 
@@ -4608,6 +4613,8 @@ void K_SpawnMineExplosion(mobj_t *source, UINT8 color, tic_t delay)
 		truc->hitlag += delay;
 		truc->renderflags |= RF_DONTDRAW;
 	}
+
+	Obj_SpawnBrolyKi(source, delay);
 }
 
 #undef MINEQUAKEDIST

src/objects/broly.c

@@ -37,6 +37,8 @@ Obj_SpawnBrolyKi
 	x = P_SpawnMobjFromMobj(
 			source, 0, 0, 0, MT_BROLY);
 
+	P_SetTarget(&x->target, source);
+
 	// Shrink into center of source object.
 	x->z = (source->z + source->height / 2);
 

src/p_enemy.c

@@ -13059,12 +13059,11 @@ void A_SSMineExplode(mobj_t *actor)
 
 void A_SSMineFlash(mobj_t *actor)
 {
-	K_MineFlashScreen(actor);
+	K_MineFlashScreen(actor->target);
 }
 
 void A_LandMineExplode(mobj_t *actor)
 {
-
 	mobj_t *expl;
 	INT32 colour = SKINCOLOR_KETCHUP;	// we spell words properly here
 	INT32 i;

src/p_spec.c

@@ -47,6 +47,7 @@
 #include "k_respawn.h"
 #include "k_terrain.h"
 #include "acs/interface.h"
+#include "m_easing.h"
 
 // Not sure if this is necessary, but it was in w_wad.c, so I'm putting it here too -Shadow Hog
 #include <errno.h>
@@ -9385,7 +9386,7 @@ void P_StartQuakeFromMobj(tic_t time, fixed_t intensity, fixed_t radius, mobj_t
 	quake->epicenter = (mappoint_t *)Z_Malloc(sizeof(mappoint_t), PU_LEVEL, NULL);
 	quake->epicenter->x = mobj->x;
 	quake->epicenter->y = mobj->y;
-	quake->epicenter->z = mobj->z;
+	quake->epicenter->z = mobj->z + (mobj->height / 2);
 }
 
 void P_DoQuakeOffset(UINT8 view, mappoint_t *viewPos, mappoint_t *offset)
@@ -9407,17 +9408,25 @@ void P_DoQuakeOffset(UINT8 view, mappoint_t *viewPos, mappoint_t *offset)
 		ir = quake->intensity;
 
 		// Modulate with time remaining.
-		ir = FixedMul(ir, 2 * FRACUNIT * (quake->time + 1) / quake->startTime);
+		const fixed_t timeEase = (FRACUNIT * ((quake->startTime - quake->time) - 1)) / quake->startTime;
+		ir = Easing_InCubic(timeEase, ir, 0);
 
 		// Modulate with distance from epicenter, if it exists.
 		if (quake->radius > 0 && quake->epicenter != NULL)
 		{
-			fixed_t epidist = P_AproxDistance(
+			const fixed_t distBuffer = 256 * mapobjectscale; // add a small buffer zone before it starts to drop off
+			const fixed_t epidist = P_AproxDistance(
+				P_AproxDistance(
 					viewPos->x - quake->epicenter->x,
 					viewPos->y - quake->epicenter->y
-			);
+				),
+				viewPos->z - quake->epicenter->z
+			) - distBuffer;
 
-			ir = FixedMul(ir, FixedDiv(max(0, quake->radius - epidist), quake->radius));
+			
+			fixed_t distEase = FixedDiv(max(epidist, 0), quake->radius);
+			distEase = min(distEase, FRACUNIT);
+			ir = Easing_InCubic(distEase, ir, 0);
 		}
 
 		addZ += ir;

src/p_tick.c

@@ -1026,7 +1026,7 @@ void P_Ticker(boolean run)
 			{
 				quake->epicenter->x = quake->mobj->x;
 				quake->epicenter->y = quake->mobj->y;
-				quake->epicenter->z = quake->mobj->z;
+				quake->epicenter->z = quake->mobj->z + (quake->mobj->height / 2);
 			}
 
 			quake = quake->next;