func (ai *PlayerAI) Act(db *engine.EntityDB, eid engine.Entity) {
// RENDERING
RenderMapAt(db, eid)
// INPUT HANDLING
event := termbox.PollEvent()
var dx, dy, dz int64
switch event.Ch {
case 'h':
dx = -1
case 'j':
dy = -1
case 'k':
dy = 1
case 'l':
dx = 1
case 'y':
dx = -1
dy = 1
case 'u':
dx = 1
dy = 1
case 'b':
dx = -1
dy = -1
case 'n':
dx = 1
dy = -1
case '>':
dz = -4
case '<':
dz = 4
case 0:
switch event.Key {
case termbox.KeyCtrlQ:
done = true
}
}
base.HelperMove(db, eid, dx, dy, dz)
}
func (ai *FollowAI) Act(db *engine.EntityDB, eid engine.Entity) {
epos := db.Get(eid, "position").(*base.Position)
tpos := db.Get(ai.Target, "position").(*base.Position)
dx, dy := int64(0), int64(0)
if epos.X > tpos.X+1 || epos.X < tpos.X-1 {
dx = int64(math.Copysign(1, float64(tpos.X-epos.X)))
}
if epos.Y > tpos.Y+1 || epos.Y < tpos.Y-1 {
dy = int64(math.Copysign(1, float64(tpos.Y-epos.Y)))
}
// Since the bat is situated at z-level 2, it will never find
// a wall with art symbol '#' at one level below, so this move
// function still allows the bat to fly over stones! ^_^
// Hence the "+1" for the z; so the bat stays one level above
// the player.
base.HelperMove(db, eid, dx, dy, tpos.Z-epos.Z+1)
}