CX/CY tags

[katajakasa]

These set the current movement speed to the Hars current facing direction. CX works on horizontal axis, while CY works on vertical axis. CY tag only works if CX is also set. Values seem to be in pixels per frame. Speed is only set if object was already moving (additional speed calculation). If only one of the tags is set, then the other tag value is assumed to be 0.

Some animation types cause certain exceptions to the calculations. If animation is not exception case, then these special variables will be considered to be 0. Exceptions & values:

Key	cxe	cye
BURNING_OIL	-1.0	0
CROUCHING_BLOCK	-0.7	0.7
BLOCKING_SCRAPE	-0.7	-0.7
STANDING_BLOCK	0	1.0
JUMPING	0	-1.0
STUNNED	1.0	0
CROUCHING	0.7	0.7
STANDING_UP	0.7	-0.7

Calculations:

• horizontal_speed = horizontal_speed + float(cx) * cxe * horizontal_agility_modifier
• vertical_speed = vertical_speed + float(cy) * cye * vertical_agility_modifier
• Note that cx and cy must be converted to float by dividing with 256.

Notes:

• If CX or CY tag is set, any existing X and Y slides are set to 0.
• CX speed is multiplied by -1, if animation is facing left.

Additional agility modifiers explained here: #395 -- 0.03 modifier is used for horizontal speed, while 0.02 modifier is used for vertical speed.