--[[
 
In this project the main objective I am trying to accomplish is to repair the wings 
on a rocket ship. 
 
By doing this and having visual confermation that the wings are repaired I will show a health bar
and a sparks from particle candy. 
 
Code should show a small red bar which then grows orange then green
 
]]
display.setStatusBar( display.HiddenStatusBar ) -- HIDE STATUS BAR
  
local i = 1
local maxHealth = 100
local rand = math.random
local speed = 4
local intensity = 5
 
 
local _W = display.contentWidth
local _H = display.contentHeight
 
local background = display.newImageRect("background.png", 1024, 768)
background.x = _W/2;  background.y = _H/2 
 
local rocketBody = display.newImageRect("Body.png", 26, 127)
rocketBody.x = 150; rocketBody.y = 650
    
local planet = display.newImageRect("Planet.png", 114, 114)
planet.x = 150; planet.y = 150
 
 
local healthRect = display.newRect(0,0,5,5)
          healthRect:setFillColor(255,0,0)
        
local wings = display.newImageRect("wings.png", 50, 50)
wings.x = rand(100,550); wings.y = 150
wings.health = 2
 
 
local intensityNo = display.newText("Intensity : " .. intensity ,0,0,native.systemFontBold,32)
        --intensityNo:scale(0.5,0.5)
 
intensityNo.y = 200
intensityNo.x = _W/2
 
 
local function moveMe(event)
        local phase = event.phase
        local x = event.x
        local y = event.y
        local target = event.target
        
        if "began" == phase then
                display.currentStage:setFocus(wings)
                target.x0 = x
                target.y0 = y
                target.isFocus = true
        elseif "moved" == phase and target.isFocus==true then
                target.x = target.x + (x-target.x0)
                target.y = target.y + (y-target.y0)
 
                healthRect:setReferencePoint(display.TopLeftReferencePoint)
                healthRect.x = target.x + (target.contentWidth/2)
                healthRect.y = target.y - target.contentHeight
 
                target.x0 = x
                target.y0 = y           
        elseif "ended" == phase then
                display.currentStage:setFocus(nil)
                wings.isFocus = false
                target.x0 = nil
                target.y0 = nil
        end
end
 
local function updateHealth()
        local a_health = math.floor(wings.health,0)
                
                if a_health > 60 then
                        --armyMan:play("armyMan armyMan")
                elseif a_health > 40 then
                        healthRect:setFillColor(0,255,0)
                        --armyMan:play("armyMan melting")
                        
                elseif a_health > 20 then
                        healthRect:setFillColor(180,180,0)
                        --armyMan:play("armyMan moreMelted")
                elseif a_health < 20 then
                        --armyMan:play("armyMan plasticBall")
                        healthRect:setFillColor(255,0,0)
                        --audio.play( scream )
                end
                
                if a_health > 1 then 
                        healthRect:setReferencePoint(display.TopLeftReferencePoint)
                        healthRect.width = (a_health/5)
                        print(a_health)
                        
                end     
        
end
 
local function onEnterFrame(event)
        if wings==nil then 
                Runtime:removeEventListener("enterFrame", onEnterFrame)
                return 
        end
if wings.isFocus==true then return end
 
        healthRect.x = wings.x + (wings.contentWidth/2)
        healthRect.y = wings.y - wings.contentHeight
                
 
        if wings.y < (_H *.90) then
                wings.y = wings.y+speed
 
        --repairZone            
        elseif wings.x >140 and wings.x < 200  then
        wings.health = wings.health + (0.1 * intensity)
        if wings.health > 100 then wings.health = 100 end
                
        healthRect:removeSelf()
        wings:removeSelf()
        wings = nil
        healthRect = nil
        updateHealth()
        
        else
                healthRect.x = wings.x + (wings.contentWidth/2)
                healthRect.y = wings.y - wings.contentHeight
        end
 
end
        
local function removeMe( _t)
     _t:removeSelf()
     _t = nil
end
 
local function spawnRocks()
        local rock = display.newImage("rock.png")
        rock.x = _W + rock.contentWidth
        rock.y = rand(1,480)
        local scale = rand(3)
        rock:scale(scale, scale)
        rock.rotation = rand(360)
        local moveSpeed = rand(1000, 3000)
        -- local moveSpeed = 3000 - (score / 50)
        transition.to(rock, {time=moveSpeed, x=-50, onComplete=removeMe})
 
end
 
local function changeIntensity(event)
        intensity = intensity + 1
        if intensity > 5 then intensity = 1 end
        intensityNo. text = "Intensity : " .. intensity
end
 
function healMe(event)
        wings.health = math.floor(wings.health + 10)
if wings.health > 100 then wings.health = 100 end
        updateHealth()
end
 
intensityNo:addEventListener("tap",changeIntensity)
wings:addEventListener("touch",moveMe)
Runtime:addEventListener("enterFrame",onEnterFrame)     
timer.performWithDelay(1000, spawnRocks,0)