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Jayceon

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Posts posted by Jayceon

    Draw 3D line with "repeated" (?) texture

    in Scripting

    Posted

    To achieve the desired result, you need to calculate the chain length, for example, with getDistanceBetweenPoints3D. In the dxDrawMaterialSectionLine3D function, the U Section Size needs to be the same as the texture width (16), and the V Section Size needs to be the texture height (64). However, this alone does not yield the desired results. You also need to multiply the V Section Size with the calculated chain length, divide by the texture aspect ratio (in your case, 64/16) and finally, multiply by the line thickness ("width"). I recommend to create a helper drawing function for this, with arguments: start position, end position, chain thickness.

    • Thanks 1

    Cylinder marker rotation

    in Scripting

    Posted

    You can rotate it via setElementMatrix:
      

    function setMarkerHeading(markerElement, rotationDegrees)
	local markerMatrix = getElementMatrix(markerElement)

	-- Convert degrees to radians
	rotationDegrees = math.rad(rotationDegrees)

	-- Rotate around Z axis
	local cosAngle = math.cos(rotationDegrees)
	local sinAngle = math.sin(rotationDegrees)

	markerMatrix[1][1] = cosAngle
	markerMatrix[1][2] = sinAngle
	markerMatrix[1][3] = 0

	markerMatrix[2][1] = -sinAngle
	markerMatrix[2][2] = cosAngle
	markerMatrix[2][3] = 0

	markerMatrix[3][1] = 0
	markerMatrix[3][2] = 0
	markerMatrix[3][3] = 1

	-- Apply updated matrix
	return setElementMatrix(markerElement, markerMatrix)
end

    It's only rotates it around the Z axis like in Single-Player, if you want to rotate it in more axes you should search for rotation matrix in your preferred search engine.

    • Thanks 1

    Move Vehicle Door According To Cursor

    in Scripting

    Posted

    Hi.

    I've put together a code for you in which the door movement works as expected, there is one up and down movement involved at a certain camera/vehicle angle (see the pictures below).

    If you don't need that up/down movement either, we can remove it.

    Spoiler

    spacer.pngspacer.png 

    local cameraElement = getCamera()
local oldCursorRelX = 0.5
local oldCursorRelY = 0.5
local moveSensitivity = 2

function moveDoor(cursorRelX, cursorRelY)
	if not isCursorShowing() then
		return
	end

	local vehicleElement = getPedOccupiedVehicle(localPlayer)
	if not isElement(vehicleElement) then
		return
	end

	local cameraMatrix = getElementMatrix(cameraElement)
	local vehicleMatrix = getElementMatrix(vehicleElement)

	local dotProductX = cameraMatrix[1][1] * vehicleMatrix[1][1] + cameraMatrix[1][2] * vehicleMatrix[1][2]
	local dotProductY = cameraMatrix[3][1] * vehicleMatrix[1][1] + cameraMatrix[3][2] * vehicleMatrix[1][2]

	local cursorDeltaX = (cursorRelX - oldCursorRelX) * moveSensitivity
	local cursorDeltaY = (cursorRelY - oldCursorRelY) * moveSensitivity

	oldCursorRelX = cursorRelX
	oldCursorRelY = cursorRelY

	local dotProductCombined = cursorDeltaX * -dotProductX + cursorDeltaY * dotProductY
	local openRatio = getVehicleDoorOpenRatio(vehicleElement, 2) + dotProductCombined

	if openRatio < 0 then
		openRatio = 0
	elseif openRatio > 1 then
		openRatio = 1
	end

	setVehicleDoorOpenRatio(vehicleElement, 2, openRatio)
end

bindKey("f1", "down",
	function ()
		addEventHandler("onClientCursorMove", root, moveDoor)
	end
)

bindKey("f2", "down",
	function ()
		removeEventHandler("onClientCursorMove", root, moveDoor)
	end
)

     

    • Thanks 1

    Getting the right rotation from normals

    in Scripting

    Posted

    You can convert the normal vectors to euler angles with the following function, you can use the phi for the so called Z rotation and the theta for one of the remaining (check it which one is better for you). It's a working function, I had a fun time with it shooting trash cans everywhere :D 

    function directionToEuler(dirX, dirY, dirZ)
	local radius = (dirX*dirX + dirY*dirY + dirZ*dirZ) ^ 0.5
	local theta = math.deg(math.acos(dirZ / radius))
	local phi = math.deg(math.atan2(dirY, dirX)) % 360
	return theta, phi
end

     

    • Like 2

    Getting the right rotation from normals

    in Scripting

    Posted

    First, you don't need to convert the normal vectors to euler angles, beacuse the fxAddSparks function needs a direction vector that is exactly what normal vectors is.

    Second, you need to extend the TargetEndX/Y/Z values a bit because sometimes it's too short and the raycast returns false.

     

    For scaling:
      

    TargetEndX = TargetX + (TargetEndX - TargetX) * 5
TargetEndY = TargetY + (TargetEndY - TargetY) * 5
TargetEndZ = TargetZ + (TargetEndZ - TargetZ) * 5

     

    • Thanks 1

    [REL] Draw distance V1.0.2

    in Resources

    Posted

    On 09/05/2020 at 13:22, IIYAMA said:

    I am not sure, I don't have anybody that I can test it with. For hardware that can run basic GTA properly, it should be fine.

    If anybody that has an old computer, I would be very happy if that person could make a benchmark.

    The CPU usage was normal (average 0.62% in IPB when flying around the map) on my Intel Celeron E3200 (2.40 GHz)

    This PC only have a integrated video card with 128 MB dedicated video memory, so the only problem is the lower fps because a lot of objects drawed. (Tested on a green venturas map with the forest generator publiced by Essle ~ Total 2124 tree objects created)

    But yeah, this is a great work :)

     

    • Like 2

    Resource protection

    in Scripting

    Posted

    fileDelete download the file and then delete (and not secure bc the file visible for 3-5 seconds while the server is still downloading), cache false not download the file but load it into the memory.

    • Like 1

    Create one shader but replace multiple textures

    in Scripting

    Posted

    Try this: 

    texture cj_ped_torso;
texture cj_ped_head;
texture cj_ped_legs;
texture cj_ped_feet;

technique TexReplace
{
	pass P0
	{
		DepthBias = -0.0002;
		Texture[0] = cj_ped_torso;
	}
	pass P1
	{
		DepthBias = -0.0002;
		Texture[0] = cj_ped_head;
	}
	pass P2
	{
		DepthBias = -0.0002;
		Texture[0] = cj_ped_legs;
	}
	pass P3
	{
		DepthBias = -0.0002;
		Texture[0] = cj_ped_feet;
	}
}

     

    Get a random position in a given area

    in Scripting

    Posted 

    function getRandomSpawnPoint(cityName)
	if spawnPositions[cityName] then
		local realTime = getRealTime()
		math.randomseed(realTime.second + realTime.minute + realTime.hour)
		
		local minX = math.min(spawnPositions[cityName].minPos[1], spawnPositions[cityName].maxPos[1])
		local minY = math.min(spawnPositions[cityName].minPos[2], spawnPositions[cityName].maxPos[2])
		local maxX = math.max(spawnPositions[cityName].minPos[1], spawnPositions[cityName].maxPos[1])
		local maxY = math.max(spawnPositions[cityName].minPos[2], spawnPositions[cityName].maxPos[2])

		return math.random(minX, maxX), math.random(minY, maxY)
	end
end

     

    Set color of a custom texture

    in Scripting

    Posted

    You need a color shader, or a renderTarget -> draw the texture image then draw one rectangle with the selected color -> create texture from the renderTarget pixels then destroy renderTarget.

    What did I say before? 

    function changeTextureColor(textureElement, red, green, blue, alpha)
	local textureWidth, textureHeight = dxGetMaterialSize(textureElement) -- get the texture size
  	local tempRenderTarget = dxCreateRenderTarget(textureWidth, textureHeight) -- create render target with texture size
  
  	dxSetRenderTarget(tempRenderTarget) -- start rt
  	dxDrawImage(0, 0, textureWidth, textureHeight, textureElement) -- draw the texture image to the rt
  	dxDrawRectangle(0, 0, textureWidth, textureHeight, tocolor(red, green, blue, alpha)) -- draw the selected color rectangle to the rt
  	-- you can add custom texts to texture etc..
  	dxSetRenderTarget() -- end rt
  	
  	local rt_pixels = dxConvertPixels(dxGetTexturePixels(tempRenderTarget), "png") -- get the rt pixels and convert to png
  	destroyElement(tempRenderTarget) -- destroy rt because I converted to texture
  
  	return dxCreateTexture(rt_pixels) -- return the new texture element
end

     

    Or the shader way (I dont tested the shader): 

    float red;
float green;
float blue;
float alpha;

technique colorChange
{
    pass P0
    {
        MaterialAmbient = float4(red, green, blue, alpha);
    }
}
    -- You need to divide the r/g/b with 255 because shader color float range is 0-1.

local selectedRed = 128
local selectedGreen = 64
local selectedBlue = 32
local selectedAlpha = 200

dxSetShaderValue(colorChangeShader, "red", selectedRed / 255)
dxSetShaderValue(colorChangeShader, "green", selectedGreen / 255)
dxSetShaderValue(colorChangeShader, "blue", selectedBlue / 255)
dxSetShaderValue(colorChangeShader, "alpha", selectedAlpha / 255)

-- then apply the shader to the world texture

     

    • Thanks 1

    [HELP] Calculate a color red to yellow to green based on scroll 0 to 200

    in Scripting

    Posted 

    local screenX, screenY = guiGetScreenSize()

local repBarTexture = dxCreateTexture("reputation.png")
local barWidth, barHeight = dxGetMaterialSize(repBarTexture)

local maxRep = 200
local currentRep = 100
local repBarPosX = currentRep * (barWidth - 1) / maxRep

local repBarPixels = dxGetTexturePixels(repBarTexture)
local r, g, b = dxGetPixelColor(repBarPixels, math.floor(repBarPosX), barHeight / 2)

outputChatBox("HEX: " .. string.format("#%.2X%.2X%.2X", r, g, b) .. ", R: " .. r .. ", G: " .. g .. ", B: " .. b)

local barX = (screenX - barWidth) / 2
local barY = (screenY - barHeight) / 2

addEventHandler("onClientRender", getRootElement(),
	function ()
		dxDrawImage(barX, barY, barWidth, barHeight, repBarTexture)

		dxDrawRectangle(barX + repBarPosX - 2, barY - 3, 4, barHeight + 6, tocolor(255, 255, 255))
	end
)

     

    Path quality problem

    in Scripting

    Posted

    I solved this problem with a 8x8 circle image. Added image to the every node position in RT and looks better.

    What I mean?

      

    dxSetRenderTarget(gpsRouteImage)
dxSetBlendMode("modulate_add")

for i = 2, #gpsLines do
	if gpsLines[i - 1] then
		local x0 = gpsLines[i][1] - routeStartPosX + 8
		local y0 = gpsLines[i][2] - routeStartPosY + 8
		local x1 = gpsLines[i - 1][1] - routeStartPosX + 8
		local y1 = gpsLines[i - 1][2] - routeStartPosY + 8

		dxDrawImage(x0 - 4, y0 - 4, 8, 8, "dot.png")
		dxDrawLine(x0, y0, x1, y1, tocolor(255, 255, 255), 9)
	end
end

dxSetBlendMode("blend")
dxSetRenderTarget()

     

    • Thanks 2

    Check if something is within four given points

    in Scripting

    Posted 

    customBoundaries = {
  	-- this boundary is between the big brown building(s) and the skatepark on the road in LS
	["test"] = {
		{x = 1842.2908935547, y = -1412.469360351},
		{x = 1856.8596191406, y = -1412.555664062},
		{x = 1851.5925292969, y = -1436.5225830078},
		{x = 1842.0438232422, y = -1424.5217285156},
	},
}

local colorOfBounds = tocolor(255, 0, 0)

bindKey("e", "down",
	function ()
		if isElementWithinBoundary(localPlayer, "test") then
			colorOfBounds = tocolor(0, 255, 0)
		else
			colorOfBounds = tocolor(255, 0, 0)
		end
	end
)

addEventHandler("onClientRender", getRootElement(),
	function ()
		local localX, localY, localZ = getElementPosition(localPlayer)
		local boundary = "test"

		for i = 1, #customBoundaries[boundary] do
			local currentPoint = customBoundaries[boundary][i]
			local nextPoint = customBoundaries[boundary][i + 1]

			if currentPoint then
				if i == #customBoundaries[boundary] then
					nextPoint = customBoundaries[boundary][1]
					dxDrawLine3D(currentPoint.x, currentPoint.y, localZ, nextPoint.x, nextPoint.y, localZ, colorOfBounds, 3)
				end

				dxDrawLine3D(currentPoint.x, currentPoint.y, localZ, nextPoint.x, nextPoint.y, localZ, colorOfBounds, 3)
			end
		end
	end
)

function isElementWithinBoundary(element, boundary)
	if isElement(element) and boundary and customBoundaries[boundary] and #customBoundaries[boundary] >= 3 then
		local pointX, pointY, pointZ = getElementPosition(element)
		local intersections = 0

		for i = 1, #customBoundaries[boundary] do
			local currentPoint = customBoundaries[boundary][i]

			if currentPoint then
				local nextPoint = customBoundaries[boundary][i + 1]
				local previousPoint = customBoundaries[boundary][i - 1]

				if i == 1 then
					previousPoint = customBoundaries[boundary][1]
				elseif i == #customBoundaries[boundary] then
					nextPoint = customBoundaries[boundary][1]
				end

				if areIntersecting(pointX, pointY, previousPoint.x, previousPoint.y, currentPoint.x, currentPoint.y, nextPoint.x, nextPoint.y) then
					intersections = intersections + 1
				end
			end
		end

		if intersections > 0 then
			return true
		end
	end

	return false
end

function sign(x1, y1, x2, y2, x3, y3)
	return (x1 - x3) * (y2 - y3) - (x2 - x3) * (y1 - y3)
end

function areIntersecting(pointX, pointY, x1, y1, x2, y2, x3, y3)
	local b1 = sign(pointX, pointY, x1, y1, x2, y2) < 0
	local b2 = sign(pointX, pointY, x2, y2, x3, y3) < 0
	local b3 = sign(pointX, pointY, x3, y3, x1, y1) < 0

	return b1 == b2 and b2 == b3
end

     

    Tested. Works with 3 or more points.

    Yes, you can check the element within the the polygon.

    • Like 1

    Call functions in other directories?

    in Scripting

    Posted

    When you export function and call it in another resource you use those formats:

    exports.resname:functionName(arguments)

    or

    exports["resname"]:functionName(arguments)

    Then: 

    --script1.lua
function output()
    print ("ok")
end

--script1 meta.xml
<meta>
    <script src="script1.lua" type="server"/>

    <export function="output"/>
</meta>
  
--script2.lua
exports.script1:output()
  
--script2 meta.xml
<meta>
    <include resource="script1"/>
    <script src="script2.lua" type="server"/>
</meta>

     

    Call functions in other directories?

    in Scripting

    Posted

    You can put <include resource="resname" /> or use fileOpen, fileRead, pcall and loadstring functions. 

    local fileHandler = fileOpen(":resfolder/otherScript.lua")
if fileHandler then
  local fileContent = fileRead(fileHandler, fileGetSize(fileHandler))
  fileClose(fileHandler)
  pcall(loadstring(fileContent))
end

     

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