From a6499a6efb9778d87ed98a0fcbdb193bac1caa91 Mon Sep 17 00:00:00 2001
From: Christoph Oelckers <coelckers@zdoom.fake>
Date: Sat, 24 Jul 2010 06:21:53 +0000
Subject: [PATCH] - added DavidPH's A_Saw extension submission.

SVN r2453 (trunk)
---
 src/g_doom/a_doomweaps.cpp                | 74 +++++++++++++++++------
 wadsrc/static/actors/constants.txt        |  8 +++
 wadsrc/static/actors/shared/inventory.txt |  2 +-
 3 files changed, 64 insertions(+), 20 deletions(-)

diff --git a/src/g_doom/a_doomweaps.cpp b/src/g_doom/a_doomweaps.cpp
index 7cd53b49c..515a3015e 100644
--- a/src/g_doom/a_doomweaps.cpp
+++ b/src/g_doom/a_doomweaps.cpp
@@ -100,52 +100,88 @@ DEFINE_ACTION_FUNCTION(AActor, A_FirePistol)
 //
 // A_Saw
 //
+enum SAW_Flags
+{
+	SF_NORANDOM = 1,
+	SF_RANDOMLIGHTMISS = 2,
+	SF_RANDOMLIGHTHIT = 4,
+	SF_NOUSEAMMOMISS = 8,
+	SF_NOUSEAMMO = 16,
+};
+
 DEFINE_ACTION_FUNCTION_PARAMS(AActor, A_Saw)
 {
-	angle_t 	angle;
+	angle_t angle;
+	angle_t slope;
 	player_t *player;
 	AActor *linetarget;
 
-	ACTION_PARAM_START(4);
+	ACTION_PARAM_START(9);
 	ACTION_PARAM_SOUND(fullsound, 0);
 	ACTION_PARAM_SOUND(hitsound, 1);
 	ACTION_PARAM_INT(damage, 2);
 	ACTION_PARAM_CLASS(pufftype, 3);
-	ACTION_PARAM_FIXED(Range, 4)
-	ACTION_PARAM_FIXED(LifeSteal, 5);
+	ACTION_PARAM_INT(Flags, 4);
+	ACTION_PARAM_FIXED(Range, 5);
+	ACTION_PARAM_ANGLE(Spread_XY, 6);
+	ACTION_PARAM_ANGLE(Spread_Z, 7);
+	ACTION_PARAM_FIXED(LifeSteal, 8);
 
 	if (NULL == (player = self->player))
 	{
 		return;
 	}
 
+	if (pufftype == NULL) pufftype = PClass::FindClass(NAME_BulletPuff);
+	if (damage == 0) damage = 2;
+
+	if (!(Flags & SF_NORANDOM))
+		damage *= (pr_saw()%10+1);
+	
+	// use meleerange + 1 so the puff doesn't skip the flash (i.e. plays all states)
+	if (Range == 0) Range = MELEERANGE+1;
+
+	angle = self->angle + (pr_saw.Random2() * (Spread_XY / 255));
+	slope = P_AimLineAttack (self, angle, Range, &linetarget) + (pr_saw.Random2() * (Spread_Z / 255));
+
+	P_LineAttack (self, angle, Range,
+				  slope, damage,
+				  NAME_None, pufftype);
+
 	AWeapon *weapon = self->player->ReadyWeapon;
-	if (weapon != NULL)
+	if ((weapon != NULL) && !(Flags & SF_NOUSEAMMO) && !(!linetarget && (Flags & SF_NOUSEAMMOMISS)))
 	{
 		if (!weapon->DepleteAmmo (weapon->bAltFire))
 			return;
 	}
 
-	if (pufftype == NULL) pufftype = PClass::FindClass(NAME_BulletPuff);
-	if (damage == 0) damage = 2;
-	
-	damage *= (pr_saw()%10+1);
-	angle = self->angle;
-	angle += pr_saw.Random2() << 18;
-	
-	// use meleerange + 1 so the puff doesn't skip the flash (i.e. plays all states)
-	if (Range == 0) Range = MELEERANGE+1;
-
-	P_LineAttack (self, angle, Range,
-				  P_AimLineAttack (self, angle, Range, &linetarget), damage,
-				  NAME_None, pufftype);
-
 	if (!linetarget)
 	{
+		if ((Flags & SF_RANDOMLIGHTMISS) && (pr_saw() > 64))
+		{
+			player->extralight = !player->extralight;
+		}
 		S_Sound (self, CHAN_WEAPON, fullsound, 1, ATTN_NORM);
 		return;
 	}
 
+	if (Flags & SF_RANDOMLIGHTHIT)
+	{
+		int randVal = pr_saw();
+		if (randVal < 64)
+		{
+			player->extralight = 0;
+		}
+		else if (randVal < 160)
+		{
+			player->extralight = 1;
+		}
+		else
+		{
+			player->extralight = 2;
+		}
+	}
+
 	if (LifeSteal)
 		P_GiveBody (self, (damage * LifeSteal) >> FRACBITS);
 
diff --git a/wadsrc/static/actors/constants.txt b/wadsrc/static/actors/constants.txt
index ab2630688..dcf029ca9 100644
--- a/wadsrc/static/actors/constants.txt
+++ b/wadsrc/static/actors/constants.txt
@@ -1,4 +1,12 @@
 
+// Flags for A_Saw
+const int SF_NORANDOM = 1;
+const int SF_RANDOMLIGHTMISS = 2;
+const int SF_RANDOMLIGHTHIT = 4;
+const int SF_RANDOMLIGHTBOTH = 6;
+const int SF_NOUSEAMMOMISS = 8;
+const int SF_NOUSEAMMO = 16;
+
 // Flags for A_CustomMissile
 const int CMF_AIMOFFSET = 1;
 const int CMF_AIMDIRECTION = 2;
diff --git a/wadsrc/static/actors/shared/inventory.txt b/wadsrc/static/actors/shared/inventory.txt
index 3a4dd20d9..22cd69e6f 100644
--- a/wadsrc/static/actors/shared/inventory.txt
+++ b/wadsrc/static/actors/shared/inventory.txt
@@ -40,7 +40,7 @@ ACTOR Inventory native
 	action native A_ClearReFire();
 	action native A_CheckReload();
 	action native A_GunFlash(state flash = "");
-	action native A_Saw(sound fullsound = "weapons/sawfull", sound hitsound = "weapons/sawhit", int damage = 2, class<Actor> pufftype = "BulletPuff", float range = 0, float lifesteal = 0);
+	action native A_Saw(sound fullsound = "weapons/sawfull", sound hitsound = "weapons/sawhit", int damage = 2, class<Actor> pufftype = "BulletPuff", int flags = 0, float range = 0, float spread_xy = 2.8125, float spread_z = 0, float lifesteal = 0);
 	action native A_CheckForReload(int counter, state label, bool dontincrement = false);
 	action native A_ResetReloadCounter();
 	action native A_RestoreSpecialPosition();