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);
}
protected void Redraw()
{
if (m != null)
{
Bitmap bitmap;
int width = showP ? 3 * m.WidthPx : m.WidthPx;
int height = showP ? 3 * m.HeightPx : m.HeightPx;
int start_x = showP ? -m.WidthPx : 0;
int start_y = showP ? -m.HeightPx : 0;
if (start_pixel.HasValue)
{
start_x = start_pixel.Value.x;
start_y = start_pixel.Value.y;
}
if (start_pixel.HasValue && end_pixel.HasValue)
{
width = end_pixel.Value.x - start_pixel.Value.x + 1;
height = end_pixel.Value.y - start_pixel.Value.y + 1;
}
if (showC && cost_map != null)
{
width = Math.Min(width, cost_map.Width);
height = Math.Min(height, cost_map.Height);
}
bitmap = new Bitmap(width, height, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
computed_start_pixel = new Pixel((short)start_x, (short)start_y);
Graphics g = Graphics.FromImage(bitmap);
g.Clear(BackColor);
Brush startingBrush = new SolidBrush(Color.FromArgb(0x77, 0xD0, 0x00, 0x00));
Brush healingBrush = new SolidBrush(Color.FromArgb(0x77, 0x40, 0x40, 0xFF));
Brush endingBrush = new SolidBrush(Color.FromArgb(0x77, 0xD0, 0xD0, 0x00));
Brush springBrush = new SolidBrush(Color.FromArgb(0x77, 0x80, 0x80, 0x80));
Brush collisionBrush = Brushes.SlateGray;
Brush phyStartingBrush = new SolidBrush(Color.FromArgb(0x55, 0xD0, 0x00, 0x00));
Brush phyHealingBrush = new SolidBrush(Color.FromArgb(0x55, 0x40, 0x40, 0xFF));
Brush phyEndingBrush = new SolidBrush(Color.FromArgb(0x55, 0xD0, 0xD0, 0x00));
Brush phySpringBrush = new SolidBrush(Color.FromArgb(0x55, 0x80, 0x80, 0x80));
if (showC && cost_map != null)
{
float max = cost_map.GetMaxWeightExceptInfinity(cost_map_real_invul);
if (max <= 0)
{
max = float.Epsilon;
}
for (int y = 0; y < bitmap.Height; y++)
{
for (int x = 0; x < bitmap.Width; x++)
{
Rectangle dest = new Rectangle(x, y, 1, 1);
float cost = cost_map.CostAtIndex(x, y, cost_map_real_invul);
int color = cost < float.PositiveInfinity ? (int)((cost / max) * 255) : 255;
color = 255 - color;
Brush brush = new SolidBrush(Color.FromArgb(255, color, color, color));
g.FillRectangle(brush, dest);
}
}
}
else
{
if (showP)
{
for (int y = 0; y < bitmap.Height; y++)
{
for (int x = 0; x < bitmap.Width; x++)
{
short xp = (short)(x + start_x);
short yp = (short)(y + start_y);
Rectangle dest = new Rectangle(x, y, 1, 1);
if (m.IsPixelInCollision(xp, yp))
{
g.FillRectangle(collisionBrush, dest);
}
Map.Zone zone = m.IsPixelInZone(xp, yp);
if (zone == Map.Zone.Starting)
{
g.FillRectangle(phyStartingBrush, dest);
}
else if (zone == Map.Zone.Healing)
{
g.FillRectangle(phyHealingBrush, dest);
}
else if (zone == Map.Zone.Ending)
{
g.FillRectangle(phyEndingBrush, dest);
}
Map.Spring[] springs = m.IsPixelInSpring(xp, yp);
foreach (Map.Spring s in springs)
{
g.FillRectangle(phySpringBrush, dest);
}
}
}
}
if (showG)
{
for (int y = 0; y < bitmap.Height; y += Map.tile_size)
{
for (int x = 0; x < bitmap.Width; x += Map.tile_size)
{
int tile_x = x + start_x;
int tile_y = y + start_y;
if (tile_x < 0 || tile_y < 0 || tile_x >= m.WidthPx || tile_y >= m.HeightPx)
{
continue;
}
ushort tile = m.TileAt(tile_x / Map.tile_size, tile_y / Map.tile_size);
int x_offset = tile_x % Map.tile_size;
int y_offset = tile_y % Map.tile_size;
Rectangle dest = new Rectangle(x - x_offset, y - y_offset, Map.tile_size, Map.tile_size);
Rectangle?sprite = m.GetTileSprite(tile);
if (sprite.HasValue)
{
g.DrawImage(Resources.sprites, dest, sprite.Value, GraphicsUnit.Pixel);
}
Map.Zone zone = m.IsTileAZone(tile);
if (zone == Map.Zone.Starting)
{
g.FillRectangle(startingBrush, dest);
}
else if (zone == Map.Zone.Healing)
{
g.FillRectangle(healingBrush, dest);
}
else if (zone == Map.Zone.Ending)
{
g.FillRectangle(endingBrush, dest);
}
if (m.IsTileASpring(tile).HasValue)
{
dest = new Rectangle(dest.X, dest.Y, Map.spring_size, Map.spring_size);
g.FillRectangle(springBrush, dest);
}
}
}
}
}
if (showO)
{
void drawRectangle(Rectangle r, Brush brush)
{
g.FillRectangle(brush, r.X - start_x, r.Y - start_y, r.Width, r.Height);
}
Brush b = new SolidBrush(Color.FromArgb(0x44, 0xAA, 0x22, 0x77));
foreach (Piston p in m.Pistons)
{
drawRectangle(p.dangerArea, b);
}
b = new SolidBrush(Color.FromArgb(0x44, 0xAA, 0x77, 0x22));
foreach (Roller r in m.Rollers)
{
drawRectangle(r.dangerArea, b);
}
}
bmap = bitmap;
}
else
{
bmap = null;
}
Refresh();
}
public bool IsHealZone(short x, short y)
{
Map.Zone zone = m.IsPixelInZone(x, y);
return(zone == Map.Zone.Healing || zone == Map.Zone.Starting);
}