Glitch

local SHADER_CODE = 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-- export to mta and writted code by: XaskeL
-- shader code from glsl by: Coolok

CGlitch = {
    GlitchPower = 0.001; -- Glitch Power (0.0f to 1.0f);
    ScreenSize = { guiGetScreenSize() }; -- default screen size

    -- example[1]: CGlitch:destroy()
    -- example[2]: CGlitch.destroy()
    -- function for destroy glitch effects
    destroy = function(self)
        if CGlitch.AlreadyHandlered then
            removeEventHandler('onClientHUDRender', root, CGlitch.draw);
            removeEventHandler('onClientPreRender', root, CGlitch.update);
            CGlitch.AlreadyHandlered = false;
        end
        if self.Shader then
            destroyElement(self.Shader);
            self.Shader = false;
        end
        if self.MyScreenSource then
            destroyElement(self.MyScreenSource);
            self.MyScreenSource = false;
        end
        return true;
    end;

    -- function for update screen source
    update = function()
        if CGlitch.MyScreenSource then
            dxUpdateScreenSource(CGlitch.MyScreenSource);
        end
    end;

    -- function for draw glitch effect
    draw = function()
        if CGlitch.Shader then
            dxDrawImage(0, 0, CGlitch.ScreenSize[1], CGlitch.ScreenSize[2], CGlitch.Shader)
        end
        if (CGlitch.fTime and CGlitch.fTime < getTickCount()) then
            CGlitch:destroy();
        end
    end;

    -- example [1]: CGlitch:show(500);
    -- example [2]: CGlitch.show(CGlitch, 500);
    -- params: @self (table CGlitch), 500 (time in milliseconds or false for permanently drawing)
    show = function(self, fTime)
        -- create screen source & shader
        if not self.Shader then
            self.MyScreenSource = dxCreateScreenSource(CGlitch.ScreenSize[1], CGlitch.ScreenSize[2]);
            self.Shader = dxCreateShader(SHADER_CODE);
            -- set default parametres
            dxSetShaderValue(self.Shader, 'GlitchPower', self.GlitchPower);
            dxSetShaderValue(self.Shader, 'myScreenSource', self.MyScreenSource);
            dxSetShaderValue(self.Shader, 'ScreenSize', { CGlitch.ScreenSize[1], CGlitch.ScreenSize[2] });
            dxSetShaderValue(self.Shader, 'PixelSize', { 1 / CGlitch.ScreenSize[1], 1 / CGlitch.ScreenSize[2] });
        end
        -- set work time
        if fTime then self.fTime = getTickCount() + fTime; else self.fTime = false; end
        -- create event handlers
        if (not self.AlreadyHandlered) then
            addEventHandler('onClientPreRender', root, CGlitch.update);
            addEventHandler('onClientHUDRender', root, CGlitch.draw);
            self.AlreadyHandlered = true;
        end
    end;
};

--[[ example:
    CGlitch:show(500); -- show 500 ms
--]]

--[[ example:
    CGlitch:show(false); -- show permanently

    addCommandHandler('disableglitch', function()
        CGlitch:destroy();
    end )
--]]

-- CGlitch:show(500); -- show 500 ms
-- setTimer(function() CGlitch:show(500); end, 400, 1) -- show 500 ms
-- setTimer(function() CGlitch:show(500); end, 800, 1) -- show 500 ms
-- setTimer(function() CGlitch:show(500); end, 1200, 1) -- show 500 ms
-- setTimer(function() CGlitch:show(500); end, 800, 1) -- show 500 ms

local MarkerPos = { x = 0.0; y = 0.0; z = 2.0; };
local theMarker = createMarker(MarkerPos.x, MarkerPos.y, MarkerPos.z, "cylinder", 1.5, 255, 255, 0, 170)

addEventHandler('onClientMarkerHit', theMarker, function()
    CGlitch:show(500);
end);