more tests to get thrust pinned to the tail

Builds/PlayThrust.pdx/pdxinfo

@@ -5,4 +5,4 @@ bundleID=uk.co.adamprocter.playthrust
 version=0.0.1
 imagePath=images
 pdxversion=11200
-buildtime=726016473
+buildtime=726086797

main.lua

@@ -20,6 +20,10 @@ local shipDy = 0
 local thrustShip = nil
 local gravity = 1.5
 
+-- for thrust
+newShipX = nil
+newShipY = nil
+
 -- viewport
 -- 400 x 240 screen
 local xOffsetmin = 100
@@ -51,6 +55,7 @@ function myGameSetUp()
     playerShip:setCollideRect(0,0,32,32)
     playerShip:add()
 
+
     -- set up thrust
     thrustShip = gfx.sprite.new()
     assert(thrustShip)
@@ -114,6 +119,7 @@ function playerShip:update()
     gfx.setColor(gfx.kColorBlack)
     gfx.drawPolygon(playerShip.polygon)
 
+    
     gfx.popContext()
     playerShip:setImage(img)
 
@@ -149,28 +155,26 @@ function playerShip:update()
     if (spY > yOffsetmax and shipDy >= 0) then
         shipMoveDy = 0
     end
-    -- if (spX > xOffsetmin and spX < xOffsetmax and spY > yOffsetmin and spY < yOffsetmax) then
-    --     if ()
-    -- end
+
+    newShipX = shipMoveDx +spX
+    newShipY = shipMoveDy +spY
     playerShip:moveWithCollisions(shipMoveDx +spX, shipMoveDy +spY)
+  
 end
 
 function thrustShip:update()
-    local spX, spY = playerShip:getPosition()
+
     local img = gfx.image.new(32, 32)
-    local angle = playdate.getCrankPosition()
     gfx.pushContext(img)
     gfx.setColor(gfx.kColorWhite)
     gfx.fillPolygon(thrustShip.polygon)
     gfx.setColor(gfx.kColorBlack)
     gfx.drawPolygon(thrustShip.polygon)
-
     gfx.popContext()
     thrustShip:setImage(img)
-    
-    thrustShip:moveTo(spX+8,spY+36)
-    thrustShip:setZIndex(60)
-    
+    -- thrustShip:moveTo(spX+8,spY+36)
+    local angle = playdate.getCrankPosition()
+    thrustShip:moveTo(newShipX + (32 * math.sin(math.rad(angle))),newShipY+36)    thrustShip:setZIndex(60)
     
     thrustShip.thrust_transform:rotate(playdate.getCrankChange(), 16,-16)
     thrustShip.thrust_transform:transformPolygon(thrustShip.polygon)