Some camera controls

controller-client/main.lua

@@ -23,6 +23,13 @@ Ping = {
 	payload = nil,
 }
 
+ControllerState = {
+	viewX = 0,
+	viewY = 0,
+	viewChanged = false,
+	viewLastUpdated = 0
+}
+
 function love.update2()
 	local now = love.timer.getTime()
 	if now - Ping.timeSent > 5 then
@@ -34,6 +41,24 @@ function love.update2()
 		love.mqtt.send("command/ping", Ping.payload)
 		print("Sending ping")
 	end
+	if ControllerState.viewChanged and (now - ControllerState.viewLastUpdated) >= 0.05 then
+		love.mqtt.send("command/set_camera_xy", toJSON({
+			x = -ControllerState.viewX * 0.3 + 0.5,
+			y = -ControllerState.viewY * 0.3 + 0.5
+		}))
+		ControllerState.viewChanged = false
+		ControllerState.viewLastUpdated = now
+	end
+end
+
+function love.joystickaxis2(joystick, axis, value)
+	if axis == 3 and value ~= ControllerState.viewX then
+		ControllerState.viewX = value
+		ControllerState.viewChanged = true
+	elseif axis == 4 and value ~= ControllerState.viewY then
+		ControllerState.viewY = value
+		ControllerState.viewChanged = true
+	end
 end
 
 function formatSafe(format, value, ...)
@@ -81,3 +106,22 @@ function love.gamepadpressed2(joystick, button)
 		UIState.showUI = not UIState.showUI
 	end
 end
+
+function toJSON(arg)
+	local t = type(arg)
+	if t == "number" then
+		return tostring(arg)
+	elseif t == "nil" then
+		return "null"
+	elseif t == "string" then
+		return '"' .. arg .. '"'
+	elseif t == "boolean" then
+		return tostring(arg)
+	elseif t == "table" then
+		local fields = {}
+		for key, value in pairs(arg) do
+			fields[#fields+1] = string.format('"%s":%s', key, toJSON(value))
+		end
+		return '{' .. table.concat(fields, ',') .. '}'
+	end
+end