Rogues’ Rendezvous: Vertically Sliced - The Game Maker's Companion: Game Development - page 300

5. Again in the Step event of obj_skeleton_land , alter the check before playing the

bootstep sound effect to include an additional line at the start, as follows:
1: if( target_dist < EPURSUE_DIST*2 )
2: if( image_index == 6 || image_index == 18 )
3: sound_play( snd_bootstep );

This stops you from being able to hear footsteps from all skeletons on the whole level
at once—just the ones within a reasonable earshot distance. Note that putting two if
statements directly after each other in this way is the same as combining the separate
expressions with a logical and operator, so you could use a single if statement and it
would do the same thing:
1: if( target_dist < EPURSUE_DIST*2 &&
2: (image_index == 6 || image_index == 18) )
3: sound_play( snd_bootstep );

6. Finally, for the Step event of obj_skeleton_land , change the case statement for

ESTATE_ATTACK to include the following code. This will then play sword sound effects at
appropriate points in the animation when we trigger it later on.
1: case ESTATE_ATTACK:
2: if( image_index = 8 || image_index == 18 )
3: sound_play( snd_sword );
4: hspeed = 0;
5: break;

7. Now you can finally close the Step event and add an Alarm, Alarm1 event to

obj_skeleton_land . Include an Execute Code action containing the following code to
reset the pursuing state. It also resets the target object back to Flynn, as it will
sometimes change when skeletons start to pursue Archie as well.
1: {
2: target_obj = obj_flynn;
3: pursuing = false;
4: }

8.

Finally, edit the Alarm, Alarm0 event and include the following code after the first two
lines that switch the direction of facing. This code simply changes the skeleton's facing
direction to look at its target when it is in pursuit. This is ultimately what creates the
pursuit behavior for the skeleton.
1: if( pursuing == true )
2: {
3: if( target_obj.x > x )
4: facing = FACE_RIGHT;
5: else
6: facing = FACE_LEFT;
7: }