From 3c66e7a4d91e2c891cd3b93346ee1f211eb4b6a5 Mon Sep 17 00:00:00 2001
From: ubq323 <ubq323@ubq323.website>
Date: Sat, 25 Feb 2023 15:24:33 +0000
Subject: don't draw chunks definitely not on screen; add targeting reticle;
 save chunks before exiting on sigint; add /tp 'command'

---
 client/drawing2.lua | 11 +++++++++++
 client/main.lua     | 32 +++++++++++++++++++++++++++++++-
 server/server.lua   | 30 +++++++++++++++++++++++-------
 3 files changed, 65 insertions(+), 8 deletions(-)

diff --git a/client/drawing2.lua b/client/drawing2.lua
index e09d7dc..c894e4c 100644
--- a/client/drawing2.lua
+++ b/client/drawing2.lua
@@ -123,16 +123,27 @@ local function draw_map(camera,map)
 	shader:send("zoom",camera.zoom)
 	love.graphics.setShader(shader)
 
+	local cam_tl,cam_br = camera:extents()
+
 	local count = CHUNK_SIZE*CHUNK_SIZE
 	for _,ch in map:iter_chunks() do
 		if ch then
 			-- todo: skip chunks that aren't on screen, maybe
 			local htl,hbr = ch.cp:extents()
 			local tl = htl:to_pos()
+			local br = hbr:to_pos()
+
+			if br.x < cam_tl.x or cam_br.x < tl.x or br.y < cam_tl.y or cam_br.y < tl.y then
+					-- definitely not visible on screen
+					-- this does not catch every single nonvisible chunk
+					goto next
+			end
+			
 
 			set_imesh(ch.imesh)
 			love.graphics.drawInstanced(shape_mesh, count, tl.x, tl.y)
 		end
+		::next::
 	end
 
 	love.graphics.setShader()
diff --git a/client/main.lua b/client/main.lua
index 74a8be9..c2d5a76 100644
--- a/client/main.lua
+++ b/client/main.lua
@@ -75,7 +75,17 @@ function love.keypressed(key,scancode,isrepeat)
 	elseif ui_mode == "chat" then
 		if key == "return" then
 			ui_mode = "normal"
-			peer:send(json.encode{t="chat",msg=this_chatmsg})
+			if this_chatmsg:sub(1,3) == "/tp" then
+				local x,y = this_chatmsg:match("/tp (%S+) (%S+)")
+				if x then
+					x,y = tonumber(x),tonumber(y)
+					local_player.pos.x=x
+					local_player.pos.y=y
+					local_player.pos_dirty=true
+				end
+			else
+				peer:send(json.encode{t="chat",msg=this_chatmsg})
+			end
 			-- msgbox.add("[me] "..this_chatmsg)
 		elseif key == "escape" then
 			ui_mode = "normal"
@@ -264,6 +274,26 @@ function love.draw()
 	local wm = camera:screen_to_world(sm)
 	local hm = wm:to_hex()
 
+	-- draw reticle
+	local hmr = hm:round()
+	local mouse_tile = map:at(hmr)
+	if mouse_tile then
+		local col = {0.5,0.5,0.5}
+		if mouse_tile == 0 then col = {0,0,0} end
+		local c = hmr:to_pos()
+		local verts = {}
+		for i=0,5 do
+			local angle = math.pi*2*(i+0.5)/6
+			table.insert(verts, c.x+math.cos(angle))
+			table.insert(verts, c.y+math.sin(angle))
+		end
+		love.graphics.setColor(col)
+		love.graphics.setLineWidth(0.05)
+		love.graphics.polygon("line",verts)
+	end
+
+	
+
 	love.graphics.origin()
 	util.print_good(tostring(selected_tile), "center",10)
 	if _G.debugmode and local_player then
diff --git a/server/server.lua b/server/server.lua
index 097bc99..24b49ae 100644
--- a/server/server.lua
+++ b/server/server.lua
@@ -7,6 +7,8 @@ local Pos = coords.Pos
 local worldgen = require"worldgen"
 local MapS = require"map".MapS
 local posix_time = require"posix.time"
+local posix_signal = require"posix.signal"
+
 math.randomseed(os.time())
 
 local host = enet.host_create("*:8473",nil,2)
@@ -181,20 +183,34 @@ local function player_near_chunk(cp)
 	return false
 end
 
+local function save_things()
+	for cp,ch in map:iter_chunks() do
+		map:save_chunk(cp)
+		if not player_near_chunk(cp) then
+			-- print("unloading chunk",cp)
+			map:remove_chunk(cp)
+		end
+	end
+end
+
 local function tick(ntick)
 	if ntick % 30 == 0 then
 		-- print("saving things")
-		for cp,ch in map:iter_chunks() do
-			map:save_chunk(cp)
-			if not player_near_chunk(cp) then
-				-- print("unloading chunk",cp)
-				map:remove_chunk(cp)
-			end
-		end
+		save_things()
 	end
 end
 
+local stopping=false
+
+posix_signal.signal(posix_signal.SIGINT, function() stopping=true end)
+
 while true do
+	if stopping then
+		print("stopping...")
+		save_things()
+		break
+	end
+
 	local now = timenow()
 	local dt = now - last_tick_time
 	local time_till_next_tick = (last_tick_time+tick_interval)-now
-- 
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