91 lines
2.6 KiB
C
91 lines
2.6 KiB
C
/**
|
|
* Behavior for WDW arrow lifts.
|
|
* When a player stands on an arrow lift, it starts moving between
|
|
* two positions 384 units apart.
|
|
* Arrow lifts move either along the X axis or the Z axis.
|
|
* Their facing angle is always perpendicular to the axis they move on.
|
|
* The angle the arrow lifts move initially is 90º clockwise of the face angle.
|
|
* This means an arrow lift at (0, 0, 0) with face angle 0 (positive Z) will
|
|
* move between (0, 0, 0) and (-384, 0, 0).
|
|
*/
|
|
|
|
/**
|
|
* Move the arrow lift away from its original position.
|
|
*/
|
|
static s32 arrow_lift_move_away(void) {
|
|
s8 status = ARROW_LIFT_NOT_DONE_MOVING;
|
|
|
|
o->oMoveAngleYaw = o->oFaceAngleYaw - 0x4000;
|
|
o->oVelY = 0;
|
|
o->oForwardVel = 12;
|
|
// Cumulative displacement is used to keep track of how far the platform
|
|
// has travelled, so that it can stop.
|
|
o->oArrowLiftDisplacement += o->oForwardVel;
|
|
|
|
// Stop the platform after moving 384 units.
|
|
if (o->oArrowLiftDisplacement > 384) {
|
|
o->oForwardVel = 0;
|
|
o->oArrowLiftDisplacement = 384;
|
|
status = ARROW_LIFT_DONE_MOVING;
|
|
}
|
|
|
|
obj_move_xyz_using_fvel_and_yaw(o);
|
|
return status;
|
|
}
|
|
|
|
/**
|
|
* Move the arrow lift back to its original position.
|
|
*/
|
|
static s8 arrow_lift_move_back(void) {
|
|
s8 status = ARROW_LIFT_NOT_DONE_MOVING;
|
|
|
|
o->oMoveAngleYaw = o->oFaceAngleYaw + 0x4000;
|
|
o->oVelY = 0;
|
|
o->oForwardVel = 12;
|
|
o->oArrowLiftDisplacement -= o->oForwardVel;
|
|
|
|
// Stop the platform after returning back to its original position.
|
|
if (o->oArrowLiftDisplacement < 0) {
|
|
o->oForwardVel = 0;
|
|
o->oArrowLiftDisplacement = 0;
|
|
status = ARROW_LIFT_DONE_MOVING;
|
|
}
|
|
|
|
obj_move_xyz_using_fvel_and_yaw(o);
|
|
return status;
|
|
}
|
|
|
|
/**
|
|
* Arrow lift update function.
|
|
*/
|
|
void bhv_arrow_lift_loop(void) {
|
|
switch (o->oAction) {
|
|
case ARROW_LIFT_ACT_IDLE:
|
|
// Wait 61 frames before moving.
|
|
if (o->oTimer > 60) {
|
|
if (gMarioObject->platform == o) {
|
|
o->oAction = ARROW_LIFT_ACT_MOVING_AWAY;
|
|
}
|
|
}
|
|
|
|
break;
|
|
|
|
case ARROW_LIFT_ACT_MOVING_AWAY:
|
|
if (arrow_lift_move_away() == ARROW_LIFT_DONE_MOVING) {
|
|
o->oAction = ARROW_LIFT_ACT_MOVING_BACK;
|
|
}
|
|
|
|
break;
|
|
|
|
case ARROW_LIFT_ACT_MOVING_BACK:
|
|
// Wait 61 frames before moving (after stopping after moving forwards).
|
|
if (o->oTimer > 60) {
|
|
if (arrow_lift_move_back() == ARROW_LIFT_DONE_MOVING) {
|
|
o->oAction = ARROW_LIFT_ACT_IDLE;
|
|
}
|
|
}
|
|
|
|
break;
|
|
}
|
|
}
|