KovFPMtT.lua

require "base/internal/ui/reflexcore"

-- This Widget is "Frags Per Minute to Tie"
-- It displays a small graphic to indicate how close the game is in terms of the difference of frags and the remaining time.  If you need 10 frags per minute to win, the graph is going to let you know that you've probably already lost.

KovFPMtT =
{
};
registerWidget("KovFPMtT");

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local function avgColor(color1, color2, perc)
	local r = (color1.r * perc) + (color2.r * (1-perc))
	local g = (color1.g * perc) + (color2.g * (1-perc))
	local b = (color1.b * perc) + (color2.b * (1-perc))
	local a = (color1.a * perc) + (color2.a * (1-perc))
	return Color(r, g, b, a)
end

function KovFPMtT:draw()
 
	-- Early out if HUD shouldn't be shown.
	if not shouldShowHUD() then return end;
	
	-- Early out if not in 1v1 mode
	if world.gameModeIndex ~= 2 then return end;

	-- Find player 
	local player = getPlayer()

	local fontSize = 40
	local gaugeMaxFPM = 5
	local rectHeight = 700
	local rectWidth = 30

	-- Colors
	local transparency = 120
	local textColor = Color(255,255,255,255);

	local BackgroundColor = Color(0,0,0,transparency);
	local FarAhead = Color(0,0,255,255); -- Blue
	local BarelyAhead = Color(0,255,0,255); -- Green
	local BarelyBehind = Color(255,255,0,255) -- Yellow
	local FarBehind = Color(255,0,0,255); -- Red
   
	local gaugeTickColor = Color(255,255,255,80);

	-- Draw gauge background
	nvgBeginPath();
	nvgRect(-rectWidth/2,-rectHeight/2,rectWidth,rectHeight)
	nvgFillColor(BackgroundColor);
	nvgFill();

	local myFrags = 0
	local enemyFrags = 0

	for p,player in pairs(players) do
		if player.connected and player.state == PLAYER_STATE_INGAME then
			if player == getPlayer() then
				myFrags = player.score
			else
				enemyFrags = player.score
			end
		end
	end

	local timeLeft = (world.gameTimeLimit - world.gameTime)/1000/60

	local FPM = (myFrags-enemyFrags)/(timeLeft)

	FPM = math.min(FPM, gaugeMaxFPM)
	FPM = math.max(FPM, -gaugeMaxFPM)
	
	local graphColor
	if FPM > 0 then
		local percentmix = (FPM)/(gaugeMaxFPM)
		graphColor = avgColor(FarAhead,BarelyAhead,percentmix)
	else
		local percentmix = (-FPM)/(gaugeMaxFPM)
		graphColor = avgColor(FarBehind,BarelyBehind,percentmix)
	end
	
	if world.gameState ~= 1 then -- only display when a real game is going on
		FPM = 0
	end
	
	-- Draw the first color
	nvgBeginPath();
	nvgRect(-rectWidth/2,0,rectWidth,-FPM/gaugeMaxFPM*rectHeight/2)
	nvgFillColor(graphColor);
	nvgFill();
	
	--local tickMarkRange = 
	-- Draw gauge tick line at the edge
	----[[
	for i=-rectHeight/2, rectHeight/2, rectHeight/10 do
		nvgBeginPath();
		nvgRect(-rectWidth/2+2,i,rectWidth-4,2)
		nvgFillColor(gaugeTickColor);
		nvgFill();
	end
	----]]
	
	--[[
	nvgFontSize(fontSize);
	nvgFontFace("TitilliumWeb-Bold");
	nvgTextAlign(NVG_ALIGN_CENTER, NVG_ALIGN_MIDDLE);
	nvgFontBlur(0);
	nvgFillColor(textColor);
	nvgText(0, 0, FPM);
	--]]



end