colosso_occupant.h

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#include "types.h"
#include "field_obj.h"
#include "field_runtime.h"
#include "game_state.h"
 
// The Colosso finals' three courses (Colosso Log, River and Wall).
 
/// Returns the placed actor standing one cell, or else two cells, ahead of the
/// actor the player moves (straight ahead in the nearest of the four
/// directions), or 0 when there is none.
void *Colosso_FindActorAhead(void) {
  struct FieldActor *record;
  s32 facing;
  struct FieldPosition position;
  struct FieldActor *occupant;
 
  record = Object_GetById(gGameState.selectedActor);
 
  facing = (record->facing + 0x2000) & 0xc000;
 
  position.x = (record->x.fixed & 0xfff00000) + 0x80000;
  position.y = record->y.fixed;
  position.z = (record->z.fixed & 0xfff00000) + 0x80000;
  Vector_AddPolarOffset(0x100000, facing, &position);
 
  occupant = SceneData_FindSlotAtPosition(&position, record);
  if (occupant == 0) {
    position.x = (record->x.fixed & 0xfff00000) + 0x80000;
    position.y = record->y.fixed;
    position.z = (record->z.fixed & 0xfff00000) + 0x80000;
    Vector_AddPolarOffset(0x200000, facing, &position);
 
    occupant = SceneData_FindSlotAtPosition(&position, record);
  }
 
  return occupant;
}