Parameters

sprite

Type: (Default Namespace)SpriteBase
Sprite to test

Return Value

Type: Boolean
True if the specified sprite was touching this plan's rectangle previously, or false if it wasn't.

This function is identical to IsSpriteTouching(SpriteBase) except that it operates on the sprite's previous position instead of its current position. This is useful for determining if the sprite just started touching a plan's rectangle or was already touching it. Often times it's desirable to perform an automated action like a message only when a sprite initially touches a plan's rectangle. It's not as desirable for plan rules that also require other conditions to activate. Consider, for example, a plan that displays a message when the sprite touches it. This plan can automatically display the message only when the sprite first touches the plan, and everything will be fine. But what happens if it's also required that a button be pressed to activate the rule? The player may start touching the plan without touching the button. Then when the player presses the button, the rule won't activate because this is no longer the frame when the sprite initially started touching the plan, so the plan may never get activated.