Snippet #119543

TTL: forever — Wordwrap — View raw

on 2022/10/29 11:57:29 (UTC) by Anonymous as Lua

Markup
Plain

```
function widget:GetInfo()
```
```
    return {
```
```
        name      = "Marker On Click",
```

        desc      = "Place marker on single click",

```
        author    = "Helwor",
```
```
        date      = "October 2022", 
```
```
        license   = "GNU GPL v2",
```
```
        layer     = 0,
```
```
        enabled   = true,
```
```
    }
```
```
end
```
```
-- Config
```

local MOVE_THRESHOLD = 5 -- can place a marker until the mouse moved this many pixel from the click position

local DOUBLECLICK_TIME = 0.28 -- how long shall we wait for a double click to happen before authorizing to place a marker

                              -- , value try to be as close as possible of the text label trigger

```
--
```

-- NOTE: since we use Update CallIn, the delay may vary depending on lag

-- the widget is disabled at start of game if no hotkey is found for drawing on map

```
 
```

local spMarkerAddPoint = Spring.MarkerAddPoint

local spTraceScreenRay = Spring.TraceScreenRay

local spGetMouseState = Spring.GetMouseState

```
local Echo = Spring.Echo
```
```
 
```
```
local hotkey = {}
```
```
 
```

local catchDrawing, dontCatchThisOne, drawing, _, pos

local doubleClickDelay, waitDblClick, waitRelease

```
 
```

function widget:KeyPress(key,mods,isRepeat)

```
    if isRepeat then
```
```
        return
```
```
    end
```
```
    catchDrawing = hotkey[key]
```
```
end
```
```
function widget:KeyRelease(key)
```
```
    if catchDrawing then
```
```
        catchDrawing = not hotkey[key]
```
```
    end
```
```
end
```
```
function widget:Update(dt)
```
```
    if not catchDrawing then
```
```
        return
```
```
    end
```
```
    if doubleClickDelay then
```

        doubleClickDelay = doubleClickDelay - dt

```
        if doubleClickDelay<=0 then
```
```
            doubleClickDelay = false
```
```
        end
```
```
    end
```
```
    local mx,my,lmb = spGetMouseState()
```
```
    if waitRelease then
```
```
        if lmb then 
```
```
            return
```
```
        end
```
```
        waitRelease = false
```
```
    end
```
```
    if waitDblClick then
```

        if lmb then -- text label should have been triggered there

```
            catchDrawing = false
```
```
            waitDblClick = false
```
```
            doubleClickDelay = false
```
```
        else
```

            waitDblClick = doubleClickDelay

```
            if not waitDblClick then
```

                spMarkerAddPoint(pos[1],pos[2],pos[3])

```
            end
```
```
        end
```
```
        return
```
```
    end
```
```
 
```
```
    if not drawing then
```
```
        if lmb then
```
```
            last_mx,last_my = mx,my
```
```
            drawing = true
```

            doubleClickDelay = DOUBLECLICK_TIME

```
            dontCatchThisOne = false
```
```
        end
```
```
    else
```
```
        if not lmb then
```
```
            drawing = false
```
```
        end
```
```
        if dontCatchThisOne then
```
```
            return
```
```
        end
```

        local delta = ((last_mx-mx)^2 + (last_my-my)^2)^0.5

```
        if delta>MOVE_THRESHOLD then
```
```
            dontCatchThisOne = true
```
```
            return
```
```
        end
```

        if not (drawing or dontCatchThisOne) then

            -- we're half way there, get the pos for our marker

            _,pos = spTraceScreenRay(mx, my, true, true, false,false)

```
            if not pos then
```
```
                return
```
```
            end
```
```
            waitDblClick = true
```
```
            waitRelease = true
```
```
        end
```
```
    end
```
```
end
```
```
 
```
```
function widget:Initialize()
```

    for _,key in pairs(WG.crude.GetHotkeys("drawinmap") or {}) do

```
        hotkey[key:byte(-1)] = true
```
```
    end
```
```
    if not next(hotkey) then
```

        Echo(widget:GetInfo().name .. ' disabled, no hotkey for drawing on map')

        widgetHandler:RemoveWidget(widget)

```
    end
```
```
end
```

function widget:GetInfo()
    return {
        name      = "Marker On Click",
        desc      = "Place marker on single click",
        author    = "Helwor",
        date      = "October 2022", 
        license   = "GNU GPL v2",
        layer     = 0,
        enabled   = true,
    }
end
-- Config
local MOVE_THRESHOLD = 5 -- can place a marker until the mouse moved this many pixel from the click position
local DOUBLECLICK_TIME = 0.28 -- how long shall we wait for a double click to happen before authorizing to place a marker
                              -- , value try to be as close as possible of the text label trigger
--
-- NOTE: since we use Update CallIn, the delay may vary depending on lag
-- the widget is disabled at start of game if no hotkey is found for drawing on map

local spMarkerAddPoint = Spring.MarkerAddPoint
local spTraceScreenRay = Spring.TraceScreenRay
local spGetMouseState = Spring.GetMouseState
local Echo = Spring.Echo

local hotkey = {}

local catchDrawing, dontCatchThisOne, drawing, _, pos
local doubleClickDelay, waitDblClick, waitRelease

function widget:KeyPress(key,mods,isRepeat)
    if isRepeat then
        return
    end
    catchDrawing = hotkey[key]
end
function widget:KeyRelease(key)
    if catchDrawing then
        catchDrawing = not hotkey[key]
    end
end
function widget:Update(dt)
    if not catchDrawing then
        return
    end
    if doubleClickDelay then
        doubleClickDelay = doubleClickDelay - dt
        if doubleClickDelay<=0 then
            doubleClickDelay = false
        end
    end
    local mx,my,lmb = spGetMouseState()
    if waitRelease then
        if lmb then 
            return
        end
        waitRelease = false
    end
    if waitDblClick then
        if lmb then -- text label should have been triggered there
            catchDrawing = false
            waitDblClick = false
            doubleClickDelay = false
        else
            waitDblClick = doubleClickDelay
            if not waitDblClick then
                spMarkerAddPoint(pos[1],pos[2],pos[3])
            end
        end
        return
    end

if not drawing then
        if lmb then
            last_mx,last_my = mx,my
            drawing = true
            doubleClickDelay = DOUBLECLICK_TIME
            dontCatchThisOne = false
        end
    else
        if not lmb then
            drawing = false
        end
        if dontCatchThisOne then
            return
        end
        local delta = ((last_mx-mx)^2 + (last_my-my)^2)^0.5
        if delta>MOVE_THRESHOLD then
            dontCatchThisOne = true
            return
        end
        if not (drawing or dontCatchThisOne) then
            -- we're half way there, get the pos for our marker
            _,pos = spTraceScreenRay(mx, my, true, true, false,false)
            if not pos then
                return
            end
            waitDblClick = true
            waitRelease = true
        end
    end
end

function widget:Initialize()
    for _,key in pairs(WG.crude.GetHotkeys("drawinmap") or {}) do
        hotkey[key:byte(-1)] = true
    end
    if not next(hotkey) then
        Echo(widget:GetInfo().name .. ' disabled, no hotkey for drawing on map')
        widgetHandler:RemoveWidget(widget)
    end
end

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#119543 by Anonymous (781 days ago)