diff --git a/source/core/gamefuncs.cpp b/source/core/gamefuncs.cpp
index 884968943..ac81b680f 100644
--- a/source/core/gamefuncs.cpp
+++ b/source/core/gamefuncs.cpp
@@ -21,6 +21,7 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 //------------------------------------------------------------------------- 
 
 #include "gamefuncs.h"
+#include "gamestruct.h"
 
 
 //---------------------------------------------------------------------------
@@ -41,9 +42,9 @@ bool calcChaseCamPos(int* px, int* py, int* pz, spritetype* pspr, short *psectnu
 	assert(*psectnum >= 0 && *psectnum < MAXSECTORS);
 
 	// Calculate new pos to shoot backwards, using averaged values from the big three.
-	int nx = xs_CRoundToInt(-ang.fcos() * (4352. / 3.));
-	int ny = xs_CRoundToInt(-ang.fsin() * (4352. / 3.));
-	int nz = xs_CRoundToInt(horiz.asq16() * (17. / 6144.));
+	int nx = gi->chaseCamX(ang);
+	int ny = gi->chaseCamY(ang);
+	int nz = gi->chaseCamZ(horiz);
 
 	vec3_t pvect = { *px, *py, *pz };
 	bakcstat = pspr->cstat;
diff --git a/source/core/gamestruct.h b/source/core/gamestruct.h
index b52257b4c..66359440e 100644
--- a/source/core/gamestruct.h
+++ b/source/core/gamestruct.h
@@ -7,6 +7,7 @@ bool System_WantGuiCapture();	// During playing this tells us whether the game m
 #include "engineerrors.h"
 #include "stats.h"
 #include "packet.h"
+#include "binaryangle.h"
 #include "inputstate.h"
 
 class FSerializer;
@@ -97,6 +98,9 @@ struct GameInterface
 	virtual void ToggleThirdPerson() { }
 	virtual void SwitchCoopView() { Printf("Unsupported command\n"); }
 	virtual void ToggleShowWeapon() { Printf("Unsupported command\n"); }
+	virtual int chaseCamX(binangle ang) { return 0; }
+	virtual int chaseCamY(binangle ang) { return 0; }
+	virtual int chaseCamZ(fixedhoriz horiz) { return 0; }
 
 	virtual FString statFPS()
 	{
diff --git a/source/games/blood/src/blood.h b/source/games/blood/src/blood.h
index 5892dd8ac..2154cbf29 100644
--- a/source/games/blood/src/blood.h
+++ b/source/games/blood/src/blood.h
@@ -131,6 +131,9 @@ struct GameInterface : ::GameInterface
 	void ToggleThirdPerson() override;
 	void SwitchCoopView() override;
 	void ToggleShowWeapon() override;
+	int chaseCamX(binangle ang) { return MulScale(-Cos(ang.asbuild()), 1280, 30); }
+	int chaseCamY(binangle ang) { return MulScale(-Sin(ang.asbuild()), 1280, 30); }
+	int chaseCamZ(fixedhoriz horiz) { return FixedToInt(MulScale(horiz.asq16(), 1280, 3)) - (16 << 8); }
 
 	GameStats getStats() override;
 };
diff --git a/source/games/duke/src/duke3d.h b/source/games/duke/src/duke3d.h
index 20af59207..d117348d0 100644
--- a/source/games/duke/src/duke3d.h
+++ b/source/games/duke/src/duke3d.h
@@ -62,6 +62,9 @@ struct GameInterface : public ::GameInterface
 	void ToggleThirdPerson() override;
 	void SwitchCoopView() override;
 	void ToggleShowWeapon() override;
+	int chaseCamX(binangle ang) { return -ang.bcos(-4); }
+	int chaseCamY(binangle ang) { return -ang.bsin(-4); }
+	int chaseCamZ(fixedhoriz horiz) { return horiz.asq16() >> 9; }
 
 };
 
diff --git a/source/games/sw/src/game.h b/source/games/sw/src/game.h
index d0f8051ce..125f6f3ad 100644
--- a/source/games/sw/src/game.h
+++ b/source/games/sw/src/game.h
@@ -2251,6 +2251,9 @@ struct GameInterface : ::GameInterface
     void WarpToCoords(int x, int y, int z, int a, int h) override;
     void ToggleThirdPerson() override;
     void SwitchCoopView() override;
+    int chaseCamX(binangle ang) { return -ang.bcos(-3); }
+    int chaseCamY(binangle ang) { return -ang.bsin(-3); }
+    int chaseCamZ(fixedhoriz horiz) { return horiz.asq16() >> 8; }
 
 
     GameStats getStats() override;