Fix FPS sync

Used the wrong event for counting frames, see The-Powder-Toy/The-Powder-Toy@f137bad7f849 and The-Powder-Toy/The-Powder-Toy@63661a752c89.

Author: LBPHacker

tptmp/client/client.lua

@@ -1249,6 +1249,12 @@ function client_i:tick_fpssync_invalidate_()
 	end
 end
 
+function client_i:aftersim_fpssync_()
+	if self.registered_ and self.fps_sync_ then
+		self.fps_sync_count_ = self.fps_sync_count_ + 1
+	end
+end
+
 function client_i:tick_fpssync_()
 	if self.registered_ then
 		if self.fps_sync_ then
@@ -1263,7 +1269,6 @@ function client_i:tick_fpssync_()
 					end
 				end
 			end
-			self.fps_sync_count_ = self.fps_sync_count_ + 1
 			if now_msec >= self.fps_sync_last_ + 1000 then
 				self:send_fpssync(now_msec - self.fps_sync_first_, self.fps_sync_count_)
 				self.fps_sync_last_ = now_msec
@@ -1304,6 +1309,13 @@ function client_i:tick_fpssync_()
 	end
 end
 
+function client_i:aftersim()
+	if self.status_ ~= "running" then
+		return
+	end
+	self:aftersim_fpssync_()
+end
+
 function client_i:tick()
 	if self.status_ ~= "running" then
 		return

tptmp/client/init.lua

@@ -270,6 +270,12 @@ local function run()
 		end
 	end
 
+	local handle_aftersim = modulepack.xpcall_wrap(function()
+		if cli then
+			cli:aftersim()
+		end
+	end)
+
 	local pcur_r, pcur_g, pcur_b, pcur_a = unpack(colours.common.player_cursor)
 	local bmode_to_repr = {
 		[ 0 ] = "",
@@ -411,6 +417,7 @@ local function run()
 
 	local event_handlers = {
 		{ event = evt.TICK, handle = handle_tick },
+		{ event = evt.AFTERSIM, handle = handle_aftersim },
 	}
 
 	local function handle_simple(event, handler)