woo stuff fancy

src/ships/Resources.lua

@@ -36,6 +36,25 @@ function Resources:initialize()
     self.crewUse = 0
 end
 
+function Resources:update(dt, engineStatus)
+    self.ammo = self.ammo - self.ammoUse * dt
+    if engineStatus == "idle" then
+        self.fuel = self.fuel - self.fuelUseIdle * dt
+    elseif engineStatus == "moving" then
+        self.fuel = self.fuel - self.fuelUseMoving * dt
+    else
+        error("Invalid engineStatus!")
+    end
+    self.supplies = self.supplies - self.suppliesUse * dt
+    self.water = self.water - self.waterUse * dt
+    self.food = self.food - self.foodUse * dt
+    self.metal = self.metal - self.metalUse * dt
+    self.ore = self.ore - self.oreUse * dt
+    self.crew = self.crew - self.crewUse * dt
+
+    --TODO check if running out of anything, and do whatever is appropriate
+end
+
 function Resources:maxEverything()
     self.ammo = self.maxAmmo
     self.fuel = self.maxFuel

src/ships/Ship.lua

@@ -24,6 +24,7 @@ function Ship:initialize(x, y, rotation)
 
     self.dockedTo = false
 
+    self.engineStatus = "idle"
     self.Resources = Resources()
 end
 
@@ -77,6 +78,7 @@ function Ship:moveTo(x, y)
 end
 
 function Ship:update(dt)
+    self.Resources:update(dt, self.engineStatus)
     --check our speed, see how far along the "line" we can go, go there
     -- if reached destination ... WELL SHIT DEST NEEDS TO BE ABLE TO KNOW IF IS SHIP OR WHATEVER
 end