Fixed sprite allocation bugs

* Fixed bug that would cause the renderer for sprites to be corrupted on when the sprite vector is resized
* Changed deleted_sprites variable to deleted_animation in sprite object
* Changed sprite pointer vector to sprite id vector in canvas object
* Changed the value stored in Fixture UserData pointer to sprite id rather than sprite pointer because pointer would change on resize anyway

rcbasic_build/main.cpp

@@ -920,7 +920,7 @@ int main(int argc, char * argv[])
 
     //DEBUG START
     //rc_filename = "/home/n00b/projects/bu/constraint_demo/main.bas";
-	//rc_filename = "/home/n00b/Music/Simple 3D Platformer/main.bas";
+	rc_filename = "/home/n00b/Downloads/Tile Scrolling/main.bas";
 	//rc_filename = "/home/n00b/Programs/RCBasic_v400_Linux64/examples/Constraint/main.bas";
     //DEBUG END