-- Demolish building 
-- Put trigger around demolition zone and tag with "demolish"
-- Put empty body as target at the desired height level and tag with "target=custom"

#include "common.lua"

pSprite = GetStringParam("sprite", "")
pSpriteSizeX = GetFloatParam("spritex", 7)
pSpriteSizeY = GetFloatParam("spritey", 8)
pSpecial = GetBoolParam("special", false)

function init()
	done = false
	demolishPos = Vec()
	demolishHeight = 0
	
	trigger = FindTrigger("demolish")
	target = FindBody("target")
	maxHeight = GetBodyTransform(target).pos[2]

	if pSprite ~= "" then
		sprite = LoadSprite(pSprite)
	end
end


function tick(dt)
	if not done then
		if sprite then
			if pSpecial then
				DrawSprite(sprite, GetBodyTransform(target), pSpriteSizeX, pSpriteSizeY, 1, 1, 1, 0.02, true, false)
			else
				DrawSprite(sprite, GetBodyTransform(target), pSpriteSizeX, pSpriteSizeY, 1, 1, 1, 1, true, false)
			end
		end
		local empty, p = IsTriggerEmpty(trigger, true)
		if not empty and p[2] > maxHeight then
			demolishPos = p
			demolishHeight = p[2] - maxHeight		
		else
			SetString("hud.notification", GetTranslatedStringByKey("UI_HUD_NOTE_DEMOLITION_COMPLETE"))
			SetTag(target, "target", "cleared")
			done = true
		end
	end
end


function draw()
	if not done and not GetBool("game.map.enabled") then
 		UiPush()
			local pos = demolishPos
			local cp = GetCameraTransform().pos
			local dx = pos[1]-cp[1]
			local dz = pos[3]-cp[3]
			local dist = math.sqrt(dx*dx+dz*dz)
			local limit = 30
			if GetPlayerVehicle() ~= 0 then
				limit = 50
			end
			if dist < limit then
				local h = demolishHeight
				local x, y, z = UiWorldToPixel(pos)
				if z > 0 then
					UiFont("regular.ttf", 20)
					UiTranslate(x, y)
					UiAlign("center middle")
					UiImage("ui/common/dot.png")
					UiTranslate(0, -20)
					UiAlign("center middle")
					UiText("loc@TXT_TOO_TALL," .. math.ceil(h*10)/10)
				end
			end
		UiPop()
	end
end