HelirinState ClearLifeDataOfState(HelirinState st)
{
st = st.ShallowCopy();
st.life = 0;
st.invul = 0;
return(st);
}
HelirinState NormaliseState(HelirinState st)
{
st = st.ShallowCopy();
short px = Physics.pos_to_px(st.xpos);
short py = Physics.pos_to_px(st.ypos);
int pos_reduction = Settings.pos_reduction;
int bump_reduction = Settings.bump_reduction;
ushort rot_precision = Settings.rot_precision;
ushort rot_rate_precision = Settings.rot_rate_precision;
ushort frame_nb_precision = Settings.frame_nb_precision;
float additional_reduction_dist_multiplier = Settings.additional_reduction_dist_multiplier;
int max_additional_reduction = Settings.max_additional_reduction;
if (f.IsHealZone(px, py))
{
pos_reduction = Settings.healzone_pos_reduction;
bump_reduction = Settings.healzone_bump_reduction;
rot_precision = Settings.healzone_rot_precision;
rot_rate_precision = Settings.healzone_rot_rate_precision;
frame_nb_precision = Settings.healzone_frame_nb_precision;
additional_reduction_dist_multiplier = Settings.healzone_additional_reduction_dist_multiplier;
max_additional_reduction = Settings.healzone_max_additional_reduction;
}
float wall_dist = f.DistToWall(px, py) * additional_reduction_dist_multiplier;
int add_red = wall_dist == 0 ? Settings.additional_reduction_in_wall : Math.Min((int)wall_dist, max_additional_reduction);
pos_reduction += add_red;
bump_reduction += add_red;
st.xpos = (st.xpos >> pos_reduction) << pos_reduction;
st.ypos = (st.ypos >> pos_reduction) << pos_reduction;
st.xb = (st.xb >> bump_reduction) << bump_reduction;
st.yb = (st.yb >> bump_reduction) << bump_reduction;
st.rot = (short)((int)Math.Round((float)st.rot / rot_precision) * rot_precision);
st.rot_rate = (short)((int)Math.Round((float)st.rot_rate / rot_rate_precision) * rot_rate_precision);
if (!Settings.bonus_required && !st.IsTerminal())
{
st.gs = GameState.InGame;
}
st.frameNumber = (ushort)((st.frameNumber / frame_nb_precision) * frame_nb_precision);
st.invul = (sbyte)(((st.invul - 1) / Settings.invul_precision + 1) * Settings.invul_precision);
return(st);
}
public HelirinState Next(HelirinState st, Action a)
{
if (st == null)
{
return(null);
}
if (st.IsTerminal())
{
return(st);
}
ActionEffect e = Controller.action_to_effect(a);
st = st.ShallowCopy();
st.frameNumber += 1;
if (st.life > Settings.full_life)
{
st.life = Settings.full_life;
}
if (st.invul > Settings.invul_frames)
{
st.invul = Settings.invul_frames;
}
// 1. Set input speed (XS and YS) depending on inputs
int[] speeds = input_speeds;
if (e.x != Direction1.None && e.y != Direction1.None)
{
speeds = input_speeds_2;
}
int speed = speeds[(int)e.speed];
int xs = (int)e.x * speed;
int ys = (int)e.y * speed;
// 2. Reduce bump speed / bump rotation (XB, YB and Rot_rate) / invulnerability
short rot_diff = (short)(st.rot_srate - st.rot_rate);
if (rot_diff < -rotation_rate_decr)
{
rot_diff = -rotation_rate_decr;
}
if (rot_diff > rotation_rate_decr)
{
rot_diff = rotation_rate_decr;
}
st.rot_rate = (short)(st.rot_rate + rot_diff);
st.xb = st.xb * bump_speed_decrease_numerator / bump_speed_decrease_denominator;
st.yb = st.yb * bump_speed_decrease_numerator / bump_speed_decrease_denominator;
if (st.invul > 0)
{
st.invul--;
}
// 3. Move depending on speed (bump+input), rotate depending on rotation rate (Rot_rate)
st.xpos += xs + st.xb;
st.ypos += ys + st.yb;
st.rot += st.rot_rate;
// 4. Detection of healing/ending zones
// Position seems to be converted to px with a shift: subpixels seem to be ignored even in negative positions.
bool safe_zone = false;
Map.Zone zone = map.IsPixelInZone(pos_to_px(st.xpos), pos_to_px(st.ypos));
if (zone == Map.Zone.Healing || zone == Map.Zone.Starting)
{
safe_zone = true;
if (st.life < Settings.full_life)
{
st.life = Settings.full_life;
}
}
if (zone == Map.Zone.Ending)
{
st.gs = st.gs == GameState.InGameWithBonus ? GameState.WinWithBonus : GameState.Win;
return(st);
}
// At this point, we backup the rotation data (will be needed later)
short rot_rate_bkp = st.rot_rate; // No need to backup st.rot because it will not change anymore
// We also precompute all the helirin physical points and the collision mask
// TODO: Optionally, use memoisation to avoid recomputing collision mask each time
short[] pxs = new short[helirin_points.Length];
short[] pys = new short[helirin_points.Length];
uint collision_mask = 0;
for (int i = 0; i < helirin_points.Length; i++)
{
int radius = helirin_points[i];
// Position seems to be converted to px BEFORE adding the result of the sin/cos (it seems to ignore subpixels, even in negative positions).
short px = (short)(pos_to_px(st.xpos) - math.sin(radius, st.rot));
short py = (short)(pos_to_px(st.ypos) + math.cos(radius, st.rot));
pxs[i] = px;
pys[i] = py;
// Compute collision mask
if (map.IsPixelInCollision(px, py))
{
collision_mask |= ((uint)1 << i);
}
}
// 5. Action of springs & bonus
HashSet <int> spring_already_visited = new HashSet <int>();
bool invert_rotation = false;
bool update_rot_rate = false;
foreach (int i in helirin_points_order_for_springs) // Order is important for spring actions.
{
int radius = helirin_points[i];
short px = pxs[i];
short py = pys[i];
// Action of springs
Map.Spring[] springs = map.IsPixelInSpring(px, py);
foreach (Map.Spring spr in springs)
{
if (!spring_already_visited.Contains(spr.unique_id))
{
spring_already_visited.Add(spr.unique_id);
if (radius != 0)
{
update_rot_rate = true;
// Invert rotation if at least one spring is in the right direction
if (!invert_rotation)
{
short spring_angle = AngleOfSpring(spr.type);
short helirin_angle = radius > 0 ? st.rot : (short)(st.rot + (0x10000 / 2));
short helirin_normal_angle = (short)(helirin_angle + Math.Sign(st.rot_srate) * (0x10000 / 4));
short diff = (short)(spring_angle - helirin_normal_angle);
if (Math.Abs((int)diff) > 0x10000 / 4)
{
invert_rotation = true;
}
}
}
// Position bump
if (spr.type == Map.SpringType.Up)
{
st.xb = 0;
st.yb = -bump_speed_spring;
}
if (spr.type == Map.SpringType.Down)
{
st.xb = 0;
st.yb = bump_speed_spring;
}
if (spr.type == Map.SpringType.Left)
{
st.xb = -bump_speed_spring;
st.yb = 0;
}
if (spr.type == Map.SpringType.Right)
{
st.xb = bump_speed_spring;
st.yb = 0;
}
st.xpos += st.xb;
st.ypos += st.yb;
}
}
// Action of bonus
if (map.IsPixelInBonus(px, py) != Map.BonusType.None)
{
st.gs = GameState.InGameWithBonus;
}
}
if (invert_rotation)
{
st.rot_srate = (short)(-st.rot_srate);
}
if (update_rot_rate)
{
st.rot_rate = (short)(Math.Sign(st.rot_srate) * rot_bump_rate_spring);
if (st.rot_rate == 0)
{
st.rot_rate = -rot_bump_rate_spring;
}
}
// 6. Action of moving objects
uint object_collision_mask = 0;
if (Settings.enable_moving_objects)
{
List <Roller.Ball> balls = new List <Roller.Ball>();
foreach (Roller r in map.Rollers)
{
Roller.Ball ball = r.PreciseBoxAtTime(st.frameNumber);
if (ball != null)
{
balls.Add(ball);
}
}
balls.Sort((x, y) => x < y ? -1 : (x > y ? 1 : 0));
foreach (Roller.Ball ball in balls)
{
uint elt_collision_mask = 0;
for (int i = 0; i < helirin_points.Length; i++)
{
// For rollers, position of physical points must be recomputed to take into account last position/rotation changes
// EDIT: Seems not... At least, spring actions should not affect it
/*int radius = helirin_points[i];
* short px = (short)(pos_to_px(st.xpos) - math.sin(radius, st.rot));
* short py = (short)(pos_to_px(st.ypos) + math.cos(radius, st.rot));*/
short px = pxs[i];
short py = pys[i];
if (ball.InCollisionWith(px, py))
{
elt_collision_mask |= ((uint)1 << i);
}
}
if (elt_collision_mask != 0)
{
object_collision_mask |= elt_collision_mask;
ObjectHitReact(st, elt_collision_mask, /*pxs[0], pys[0],*/ pos_to_px(st.xpos), pos_to_px(st.ypos), ball.cx, ball.cy);
}
}
foreach (Piston p in map.Pistons)
{
Rectangle?box = null;
uint elt_collision_mask = 0;
for (int i = 0; i < helirin_points.Length; i++)
{
short px = pxs[i];
short py = pys[i];
if (p.dangerArea.Contains(px, py))
{
if (box == null)
{
box = p.PreciseBoxAtTime(st.frameNumber);
}
if (box.Value.Contains(px, py))
{
elt_collision_mask |= ((uint)1 << i);
}
}
}
if (elt_collision_mask != 0)
{
object_collision_mask |= elt_collision_mask;
ObjectHitReact(st, elt_collision_mask, /*pxs[0], pys[0],*/ pos_to_px(st.xpos), pos_to_px(st.ypos),
box.Value.X + (box.Value.Width - 1) / 2, box.Value.Y + (box.Value.Height - 1) / 2);
}
}
}
if (collision_mask != 0 || object_collision_mask != 0) // If collision with a wall OR a moving object
{
// 7. Damage and substract input speed (XS and YS) to position
if (!safe_zone)
{
if (st.invul == 0)
{
st.invul = Settings.invul_frames;
st.life--;
}
}
st.xpos -= xs;
st.ypos -= ys;
if (collision_mask != 0) // If collision with a wall
{
// 8. Bump action
// - Modify bump speed and rot rate (XB, YB and Rot_rate) accordingly if relevant
// - If modified, apply this newly computed bump speed to position
bool up_side = (collision_mask & up_mask) != 0;
bool down_side = (collision_mask & down_mask) != 0;
if (up_side && !down_side)
{
st.xb = -math.sin(auto_bump_speed, st.rot);
st.yb = math.cos(auto_bump_speed, st.rot);
}
if (!up_side && down_side)
{
st.xb = math.sin(auto_bump_speed, st.rot);
st.yb = -math.cos(auto_bump_speed, st.rot);
}
st.rot_rate = (short)(-Math.Sign(rot_rate_bkp) * rot_bump_rate);
if (st.rot_rate == 0)
{
st.rot_rate = rot_bump_rate;
}
if (up_side != down_side)
{
st.xpos += st.xb;
st.ypos += st.yb;
}
// 9. If mask has collision at one of the 3 lowest bits :
// - Modify bump speed (XB and YB) depending on input (if any)
// - If modified, apply this newly computed bump speed to position
if ((collision_mask & middle_mask) != 0 && (e.x != Direction1.None || e.y != Direction1.None))
{
int bump_speed = input_bump_speed;
if (e.x != Direction1.None && e.y != Direction1.None)
{
bump_speed = input_bump_speed_2;
}
st.xb = -(int)e.x * bump_speed;
st.yb = -(int)e.y * bump_speed;
st.xpos += st.xb;
st.ypos += st.yb;
}
}
}
// Lose?
// TODO: Move up so that some useless computation can be avoided when losing
if (st.life == 0)
{
st.gs = GameState.Lose;
}
return(st);
}