function SetupInitialCamera(dont_move_camera)
	if IsMainMenuMap() then return end
	if IsGameReplayRunning() and cameraFly.IsActive() then
		return
	end
	
	if not cameraTac.IsActive() then
		cameraTac.Activate(1)
		
		if not dont_move_camera then
			local lookat = (point(terrain.GetMapSize())/2):SetTerrainZ()
			cameraTac.SetCamera(lookat + point(0, 1000, 1000), lookat)
		end
		
		--make the cam calc its pos
		cameraTac.Normalize()
		cameraTac.SetLookAtAngle(not cameraTac.GetIsInOverview() and hr.CameraTacLookAtAngle or hr.CameraTacLookAtAngleInOverview)
		cameraTac.SetFloor(0)
		--cameraTac.SetZoom(1000)
	end
end

function OnMsg.NewMap()
	if Platform.developer then
		--this makes retail bugs unreproducable. why is it dev only?
		--note that in dev == false CloseMapLoadingScreen calls SetupInitialCamera :|, so results are similar
		SetupInitialCamera()
		terrain.UpdateTerrainDebugDraw()
	end
end

function OnMsg.GatherSessionData()
	gv_SaveCamera = CameraBeforeActionCamera or pack_params(GetCamera())
end

function dbgCamAngle()
	local ptCamera, ptCameraLookAt = GetCamera()
	local cameraVector = ptCameraLookAt - ptCamera
	local _, r = GetAxisAngle(axis_z, cameraVector)
	local ret = 180 - r/60
	print(ret)
	return ret
end

function OnMsg.LoadSessionData()
	if gv_SaveCamera then
		SetCamera(unpack_params(gv_SaveCamera))
		--make sure CameraTacLookAtAngle is obayed 
		cameraTac.SetupLookAtAngle()
	end
end

function OnMsg.DoneMap()
	camera.Unlock(1)
end

OnMsg.LoadGame = SetupInitialCamera

const.DefaultCameraRTS = {
	MinHeight = 2,
	MaxHeight = 20,--40 in Tropico 5
	HeightInertia = 4,
	MoveSpeedNormal = 3,
	MoveSpeedFast = 8,
	RotateSpeed = 6,
	LookatDist = 22,
	LowRotationRadius = 40,
	HighRotationRadius = 40,
	CameraYawRestore = 0,
	UpDownSpeed = 150,
	MinZoom = 200, --800 in Tropico 5
	MaxZoom = 1000, --8000 in Tropico 5
	BBox = box(point30, point30),
	ScrollBorder = 20,
}

hr.CameraRTSRelativeZoomingMode = 1
hr.CameraRTSZoomingScrollEasing="SinOut"
hr.CameraRTSZoomingScrollStep="0.0005"

--------------------------------------------------------------------------------------------------------
------------------------------------Tac Cam Settings----------------------------------------------------
--------------------------------------------------------------------------------------------------------
hr.CameraTacLookAtAngle = 55*60
hr.CameraTacHeight = 1100

CameraTacMoveSpeed = 2500
GamepadCameraTacMoveSpeed = 2000
hr.CameraTacMoveSpeed = CameraTacMoveSpeed

hr.CameraTacRotationSpeed = 400
hr.CameraTacMouseEdgeScrolling = true
hr.CameraTacMinFloor = 0
hr.CameraTacOverviewTime = 60 --600ms
hr.CameraTacUseInterpolatedMovement = 3 --0 off, 1 vertical only, 2 horizontal only, 3 all
hr.CameraTacInterpolatedMovementTime = 25
hr.CameraTacInterpolatedVerticalMovementTime = 50
hr.CameraTacZoomStep = 25 --this * 10 in game units
hr.CameraTacZoomStepGamepad = 200 --this * 10 in game units
hr.CameraTacZoomTime = 50
hr.CameraTacZoomOneStepPerBtnPress = false
--zoom works as a multiplier (divided by 100) of the length of the vector formed by the cam lookat and position, so 100 means no zoom, 
--200 means the camera will be positioned twice as far from the lookat than it would be without zoom 
--and 50 means it will be at half the distance than it should be without zoom.
hr.CameraTacMaxZoom = 130
hr.CameraTacMinZoom = 65
hr.CameraTacMaxZoomOverview = 220
hr.CameraTacScrollBorder = 5

if FirstLoad then
	hr.CameraTacFloorHeight = (const.SlabSizeZ or 0) * 4
	hr.CameraTacMaxFloor = 4
	hr.CameraTacZoomEasing = "Cubic out"
	hr.CameraTacPosEasing = "Circle out"
	hr.CameraTacPosVerticalEasing = "Cubic out"
	hr.CameraTacYawEasing = "Circle out"
	hr.CameraTacClampToTerrain = true
	hr.CameraTacUseVoxelBorder = true
	hr.CameraTacClampToTerrainOnSetPos = false --changing value requires game restart to take effect
end

function OnMsg.ShortcutsReloaded()
	-- pan keys
	local pan_up = GetShortcuts("actionPanUp")
	hr.CameraRTSKeyPanUp = GetCameraVKCodeFromShortcut(pan_up and pan_up[1])
	hr.CameraRTSKeyPanUpAlt	 = GetCameraVKCodeFromShortcut(pan_up and pan_up[2])
	hr.CameraTacKeyPanUp = hr.CameraRTSKeyPanUp
	hr.CameraTacKeyPanUpAlt = hr.CameraRTSKeyPanUpAlt
	
	local pan_down = GetShortcuts("actionPanDown")
	hr.CameraRTSKeyPanDown = GetCameraVKCodeFromShortcut(pan_down and pan_down[1])
	hr.CameraRTSKeyPanDownAlt = GetCameraVKCodeFromShortcut(pan_down and pan_down[2])
	hr.CameraTacKeyPanDown = hr.CameraRTSKeyPanDown
	hr.CameraTacKeyPanDownAlt = hr.CameraRTSKeyPanDownAlt
	
	local pan_left = GetShortcuts("actionPanLeft")
	hr.CameraRTSKeyPanLeft = GetCameraVKCodeFromShortcut(pan_left and pan_left[1])
	hr.CameraRTSKeyPanLeftAlt = GetCameraVKCodeFromShortcut(pan_left and pan_left[2])
	hr.CameraTacKeyPanLeft = hr.CameraRTSKeyPanLeft
	hr.CameraTacKeyPanLeftAlt = hr.CameraRTSKeyPanLeftAlt
	
	local pan_right = GetShortcuts("actionPanRight")
	hr.CameraRTSKeyPanRight = GetCameraVKCodeFromShortcut(pan_right and pan_right[1])
	hr.CameraRTSKeyPanRightAlt = GetCameraVKCodeFromShortcut(pan_right and pan_right[2])
	hr.CameraTacKeyPanRight = hr.CameraRTSKeyPanRight
	hr.CameraTacKeyPanRightAlt = hr.CameraRTSKeyPanRightAlt
	-- rot keys
	local rot_left = GetShortcuts("actionRotLeft")
	hr.CameraRTSKeyRotateLeft = GetCameraVKCodeFromShortcut(rot_left and rot_left[1])
	hr.CameraRTSKeyRotateLeftAlt = GetCameraVKCodeFromShortcut(rot_left and rot_left[2])
	hr.CameraTacKeyRotateLeft = hr.CameraRTSKeyRotateLeft
	hr.CameraTacKeyRotateLeftAlt = hr.CameraRTSKeyRotateLeftAlt
	hr.CameraFlyKeyMoveUp = hr.CameraRTSKeyRotateLeft
	hr.CameraFlyKeyMoveUpAlt = hr.CameraRTSKeyRotateLeftAlt
	
	local rot_right = GetShortcuts("actionRotRight")
	hr.CameraRTSKeyRotateRight = GetCameraVKCodeFromShortcut(rot_right and rot_right[1])
	hr.CameraRTSKeyRotateRightAlt = GetCameraVKCodeFromShortcut(rot_right and rot_right[2])
	hr.CameraTacKeyRotateRight = hr.CameraRTSKeyRotateRight
	hr.CameraTacKeyRotateRightAlt = hr.CameraRTSKeyRotateRightAlt
	hr.CameraFlyKeyMoveDown = hr.CameraRTSKeyRotateRight
	hr.CameraFlyKeyMoveDownAlt = hr.CameraRTSKeyRotateRightAlt

-- zoom keys
	local zoom_in = GetShortcuts("actionZoomIn")
	hr.CameraRTSKeyZoomIn = GetCameraVKCodeFromShortcut(zoom_in and zoom_in[1])
	hr.CameraRTSKeyZoomInAlt = GetCameraVKCodeFromShortcut(zoom_in and zoom_in[2])
	hr.CameraTacKeyZoomIn = hr.CameraRTSKeyZoomIn
	hr.CameraTacKeyZoomInAlt = hr.CameraRTSKeyZoomInAlt
	
	local zoom_out = GetShortcuts("actionZoomOut")
	hr.CameraRTSKeyZoomOut = GetCameraVKCodeFromShortcut(zoom_out and zoom_out[1])
	hr.CameraRTSKeyZoomOutAlt = GetCameraVKCodeFromShortcut(zoom_out and zoom_out[2])
	hr.CameraTacKeyZoomOut = hr.CameraRTSKeyZoomOut
	hr.CameraTacKeyZoomOutAlt = hr.CameraRTSKeyZoomOutAlt
	
	local overview = GetShortcuts("actionCamOverview")
	--[[hr.CameraTacKeyOverview = GetCameraVKCodeFromShortcut(overview and overview[1])
	hr.CameraTacKeyOverviewAlt = GetCameraVKCodeFromShortcut(overview and overview[2])]]
	hr.CameraTacKeyOverview = -1
	hr.CameraTacKeyOverviewAlt = -1
	
	local temp = GetShortcuts("actionCamFloorUp")
	hr.CameraTacFloorUp = GetCameraVKCodeFromShortcut(temp and temp[1])
	
	temp = GetShortcuts("actionCamFloorDown")
	hr.CameraTacFloorDown = GetCameraVKCodeFromShortcut(temp and temp[1])
	
	temp = GetShortcuts("actionCamRotateWithMouse")
	hr.CameraTacKeyRotateWithMouse = GetCameraVKCodeFromShortcut(temp and temp[1])
end

function SetupMapBorders()
	if not mapdata then return end

	local TacCameraBorderReduction = GetUIStyleGamepad() and 0 or 10
	if mapdata.CameraUseBorderArea then
		local marker = GetBorderAreaMarker()
		if not marker then return end
		hr.CameraTacVoxelBorderWidth = marker.AreaWidth - TacCameraBorderReduction
		hr.CameraTacVoxelBorderHeight = marker.AreaHeight - TacCameraBorderReduction
		local pos = marker:GetPos()
		hr.CameraTacVoxelBorderCenterX = pos:x()
		hr.CameraTacVoxelBorderCenterY = pos:y()
	else
		if mapdata.CameraArea > 0 then
			hr.CameraTacVoxelBorderWidth = mapdata.CameraArea - TacCameraBorderReduction
			hr.CameraTacVoxelBorderHeight = mapdata.CameraArea - TacCameraBorderReduction
		end
	end
	
	hr.CameraTacFloorHeight = mapdata.CameraFloorHeight * const.SlabSizeZ
	hr.CameraTacMaxFloor = mapdata.CameraMaxFloor
	Msg("NewMapLoadedCameraSettingsSet")
end

OnMsg.NewMapLoaded = SetupMapBorders
OnMsg.GamepadUIStyleChanged = SetupMapBorders