Merge pull request #2 from zurgeg/add-roation-gimmick

Add rotation gimmick

gameScene/sprites.lua

@@ -42,21 +42,31 @@ end
 
 function UpdateSprites()
     movedThisFrame = false
-
+    local crankDelta = playdate.getCrankChange()
     if not hasUpdated then
         hasUpdated = true
         playdate.graphics.sprite.update()
     end
     if ((playdate.buttonJustPressed(playdate.kButtonA) or playdate.buttonJustPressed(playdate.kButtonB) or playdate.buttonJustPressed(playdate.kButtonUp)) and IsGrounded(catSprite, boxSprite) and not JumpingSprites["cat"]) or JumpingSprites["cat"] then
         catSprite:pauseAnimation()
         movedThisFrame = true
+        if crankDelta ~= 0 then
+            local catRotation = catSprite:getRotation()
+            local newCatRotation = catRotation + crankDelta
+            catSprite:setRotation(newCatRotation)
+        end
         if IsGrounded(catSprite, boxSprite) and not JumpingSprites["cat"] then
             SetJumpForce("cat", 10)
         end
         ApplyJumpForce(catSprite, "cat")
         playdate.graphics.sprite.update()
         catSprite:playAnimation()
     end
+    if IsGrounded(catSprite, boxSprite) and catSprite:getRotation() ~= 0 then
+        -- todo: the player should die if they land on the box and are rotated
+        catSprite:setRotation(0)
+        JumpingSprites["cat"] = false
+    end
     if playdate.buttonIsPressed(playdate.kButtonLeft) then
         catSprite.globalFlip = gfx.kImageFlippedX
         if not JumpingSprites["cat"] then

physics/spriteCollision.lua

@@ -50,7 +50,7 @@ function ApplyJumpForce(sprite, spritename)
     if not JumpingSprites[spritename] and force ~= 0 then
         JumpingSprites[spritename] = true
     end
-    if force ~= 0 then
+    if force > 0 then
         MoveWithGravity(sprite, 0, -force)
     else
         JumpingSprites[spritename] = false