From a8de63b52af1d4eb9363d2f931c91b030b06f4a4 Mon Sep 17 00:00:00 2001
From: relaxtakenotes <134127331+jeffthekillerz@users.noreply.github.com>
Date: Sun, 4 Jun 2023 13:31:28 +0500
Subject: [PATCH] fov based bullet detection

yuh
---
 .../gamemode/player_class/player_beatrun.lua  | 33 ++++++++++++++++---
 1 file changed, 28 insertions(+), 5 deletions(-)

diff --git a/beatrun/gamemodes/beatrun/gamemode/player_class/player_beatrun.lua b/beatrun/gamemodes/beatrun/gamemode/player_class/player_beatrun.lua
index 081759c..9e10a32 100644
--- a/beatrun/gamemodes/beatrun/gamemode/player_class/player_beatrun.lua
+++ b/beatrun/gamemodes/beatrun/gamemode/player_class/player_beatrun.lua
@@ -305,9 +305,7 @@ hook.Add("ShouldCollide", "NoPlayerCollisions", function(ent1, ent2)
 		if ent2.BRCollisionFunc then 
 			return ent2:BRCollisionFunc(ent1)
 		else
-			if ent1.br_Fired or ent2.br_Fired then
-				return true
-			end
+			if (ent1.br_Fired and ent2.br_FiredBy == ent1) or (ent2.br_Fired and ent1.br_FiredBy == ent2) then return true end
 
 			return false
 		end
@@ -316,10 +314,35 @@ hook.Add("ShouldCollide", "NoPlayerCollisions", function(ent1, ent2)
 	if ent2:IsPlayer() and ent1:IsNPC() then return true end
 end)
 
+local function calc_fov(src, dst)
+	local v_src = src:Forward()
+	local v_dst = dst:Forward()
+
+	local result = math.deg(math.acos(v_dst:Dot(v_src) / v_dst:Length()))
+
+	if result != result or (result == math.huge or result == -math.huge) then
+		result = 0
+	end
+
+	return result
+end
+
 // i was forced
-hook.Add("EntityFireBullets", "thisengineismadebyacrackhead", function(ent, data) 
+hook.Add("EntityFireBullets", "thisengineismadebyacrackhead", function(ent, data)
+	if not IsValid(ent) or not isfunction(ent.GetShootPos) or not ent:IsPlayer() then return end
+
+	for i, ply in ipairs(player.GetAll()) do
+		if ply == ent then continue end
+		local fov = calc_fov(data.Dir:Angle(), (ply:GetShootPos() - data.Src):Angle())
+		print(fov)
+		if fov > 60 then continue end
+
+		ply.br_FiredBy = ent
+		timer.Simple(engine.TickInterval()*3, function() if IsValid(ply) then ply.br_FiredBy = nil end end)
+	end
+
 	ent.br_Fired = true
-	timer.Simple(engine.TickInterval()*2, function() if IsValid(ent) then ent.br_Fired = false end end)
+	timer.Simple(engine.TickInterval()*3, function() if IsValid(ent) then ent.br_Fired = false end end)
 end)
 
 hook.Add("PhysgunPickup", "AllowPlayerPickup", function(ply, ent)