First defined in: FKiSS3
The letcollide action makes a comparison based on the
individual, non-transparent pixels of the two targets.
If any pixel for target1 overlaps a pixel for target2, variable is set to 1.
Otherwise, variable is set to 0.
Since pixel-by-pixel comparison is more task-intensive,
only use this action to test collision-detection when pixel-collision
detection is necessary.
Use letinside first to see if the
rectangles of the objects overlap then use letcollide to test the
collision at a pixel level. |
variable
variable must be a variable name.
target1
In FKiSS3, target1 must be a cel.
In FKiSS4, target1 may be an object number, cel, group, or
variable repesenting an object number.
target2
In FKiSS3, target2 must be a cel.
In FKiSS4, target2 may be an object number, cel, group, or
variable repesenting an object number.
Example:
;@ letcollide(C, "this.cel", "that.cel") ; Set C to 1 if any pixel in "this.cel" overlaps any pixel in "that.cel".
;@ letcollide(C, #5, "that.cel") ; Set C to 1 if any pixel in "that.cel" overlaps any pixel in any cel in object #5.
;@ letcollide(C, VarObj, !MyGroup) ; Set C to 1 if any pixel in any cel in the object identified by VarObj overlaps any pixel in any cel in group !MyGroup.