Moving camera ruining input values! (SOLVED)

Questions
1

Hi all,

I have a factory spawning game objects upon clicking at the location of action.x, action.y.

However, if I move the camera, when I click the objects are appearing in a different location from where I clicked!

They seem to spawn in the worldspace relative to where my mouse is on my monitor. But because I have moved the camera the monitor.x monitor.y locations do not match the worldspace.x worldspace.y, locations if you will.

Can anyone suggest a solution?

N.B. action.screen_x and action.screen_y do not work either.

2

action.x and action.y will give you the coords for your screen, not the world coords.
Just take the action coords and add the camera coords and it will be correct?

3

Thats how I do it:

--- render script
...

local current_width = render.get_window_width()
local current_height = render.get_window_height()
msg.post("main_sc:/controller", "screen_size", { width = current_width , height = current_height, scale = zoom_factor })
...


--- controller script

local w = tonumber(sys.get_config("display.width"))
local h = tonumber(sys.get_config("display.height"))

function on_message(self, message_id, message, sender)
    if (message_id == hash("screen_size")) then
    	self.width = message.width
    	self.height = message.height
    	self.scale = message.scale
    end
end

function on_input(self, action_id, action)
    local mousex = self.width * action.x / w -- if window is resized
    local mousey = self.height * action.y / h

    local pos = go.get_position("/camera") -- camera position
    go.set_position(vmath.vector3(pos.x + (mousex -  self.width * 0.5) / self.scale, pos.y + (mousey - self.height * 0.5) /  self.scale, 10), "/target")
end

self.scale (zoom_factor) is optional, if u have pixelart graph

1 Like
4

In the end it wasn’t the camera position that had to be added, it was the vector difference between the current camera position and the starting position of the camera :slight_smile: