/// <summary>
/// Peforms a physics tick
/// </summary>
/// <param name="worldPlayer">The player</param>
private void Tick(WorldPlayer worldPlayer)
{
int cx = ((int)(worldPlayer.X + 8) >> 4);
int cy = ((int)(worldPlayer.Y + 8) >> 4);
worldPlayer.m_current = (int)World[cx, cy, Layer.Foreground].ID;
if (worldPlayer.Current == (BlockID)4 || IsClimbable(worldPlayer.Current))
{
worldPlayer.m_delayed = worldPlayer.m_queue[1];
worldPlayer.m_queue[0] = worldPlayer.m_current;
}
else
{
worldPlayer.m_delayed = worldPlayer.m_queue[0];
worldPlayer.m_queue[0] = worldPlayer.m_queue[1];
}
worldPlayer.m_queue[1] = worldPlayer.m_current;
if (worldPlayer.IsDead)
{
worldPlayer.Horizontal = 0;
worldPlayer.Vertical = 0;
}
bool isGodMode = worldPlayer.IsGod();
if (isGodMode)
{
worldPlayer.m_morx = 0;
worldPlayer.m_mory = 0;
worldPlayer.m_mox = 0;
worldPlayer.m_moy = 0;
}
else
{
switch (worldPlayer.Current)
{
case BlockID.GravityLeft:
case BlockID.InvisibleGravityLeft:
worldPlayer.m_morx = -Gravity;
worldPlayer.m_mory = 0;
break;
case BlockID.GravityUp:
case BlockID.InvisibleGravityUp:
worldPlayer.m_morx = 0;
worldPlayer.m_mory = -Gravity;
break;
case BlockID.GravityRight:
case BlockID.InvisibleGravityRight:
worldPlayer.m_morx = Gravity;
worldPlayer.m_mory = 0;
break;
case BlockID.BoostLeft:
case BlockID.BoostRight:
case BlockID.BoostUp:
case BlockID.BoostDown:
case BlockID.LadderNinja:
case BlockID.LadderCastle:
case BlockID.LadderJungleHorizontal:
case BlockID.LadderJungleVertical:
case BlockID.InvisibleGravityDot:
case BlockID.GravityDot:
worldPlayer.m_morx = 0;
worldPlayer.m_mory = 0;
break;
case BlockID.Water:
worldPlayer.m_morx = Gravity;
worldPlayer.m_mory = (int)WaterBuoyancy;
break;
case BlockID.Mud:
worldPlayer.m_morx = Gravity;
worldPlayer.m_mory = (int)MudBuoyancy;
break;
case BlockID.HazardFire:
case BlockID.HazardSpike:
if (!worldPlayer.IsDead && !worldPlayer.HasProtection)
{
worldPlayer.KillPlayerInternal();
}
break;
default:
worldPlayer.m_morx = 0;
worldPlayer.m_mory = Gravity;
break;
}
switch ((BlockID)worldPlayer.m_delayed)
{
case BlockID.GravityLeft:
case BlockID.InvisibleGravityLeft:
worldPlayer.m_mox = -Gravity;
worldPlayer.m_moy = 0;
break;
case BlockID.GravityUp:
case BlockID.InvisibleGravityUp:
worldPlayer.m_mox = 0;
worldPlayer.m_moy = -Gravity;
break;
case BlockID.GravityRight:
case BlockID.InvisibleGravityRight:
worldPlayer.m_mox = Gravity;
worldPlayer.m_moy = 0;
break;
case BlockID.BoostLeft:
case BlockID.BoostRight:
case BlockID.BoostUp:
case BlockID.BoostDown:
case BlockID.LadderNinja:
case BlockID.LadderCastle:
case BlockID.LadderJungleHorizontal:
case BlockID.LadderJungleVertical:
case BlockID.InvisibleGravityDot:
case BlockID.GravityDot:
worldPlayer.m_mox = 0;
worldPlayer.m_moy = 0;
break;
case BlockID.Water:
worldPlayer.m_mox = Gravity;
worldPlayer.m_moy = (int)WaterBuoyancy;
break;
case BlockID.Mud:
worldPlayer.m_mox = Gravity;
worldPlayer.m_moy = (int)MudBuoyancy;
break;
default:
worldPlayer.m_mox = 0;
worldPlayer.m_moy = Gravity;
break;
}
}
if (worldPlayer.m_moy == WaterBuoyancy || worldPlayer.m_moy == MudBuoyancy)
{
worldPlayer.m_mx = worldPlayer.Horizontal;
worldPlayer.m_my = worldPlayer.Vertical;
}
else if (worldPlayer.m_moy != 0)
{
worldPlayer.m_mx = worldPlayer.Horizontal;
worldPlayer.m_my = 0;
}
else if (worldPlayer.m_mox != 0)
{
worldPlayer.m_mx = 0;
worldPlayer.m_my = worldPlayer.Vertical;
}
else
{
worldPlayer.m_mx = worldPlayer.Horizontal;
worldPlayer.m_my = worldPlayer.Vertical;
}
worldPlayer.m_mx *= worldPlayer.SpeedMultiplier;
worldPlayer.m_my *= worldPlayer.SpeedMultiplier;
worldPlayer.m_mox *= World.Gravity;
worldPlayer.m_moy *= World.Gravity;
worldPlayer.ModifierX = worldPlayer.m_mox + worldPlayer.m_mx;
worldPlayer.ModifierY = worldPlayer.m_moy + worldPlayer.m_my;
if (!ApproachingZero(worldPlayer.m_speedX) || worldPlayer.m_modifierX != 0)
{
worldPlayer.m_speedX += worldPlayer.m_modifierX;
worldPlayer.m_speedX *= BaseDrag;
if ((worldPlayer.m_mx == 0 && worldPlayer.m_moy != 0) ||
(worldPlayer.m_speedX < 0 && worldPlayer.m_mx > 0) ||
(worldPlayer.m_speedX > 0 && worldPlayer.m_mx < 0) ||
(IsClimbable(worldPlayer.Current) && !isGodMode))
{
worldPlayer.m_speedX *= NoModifierDrag;
}
else if (worldPlayer.Current == BlockID.Water && !isGodMode)
{
worldPlayer.m_speedX *= WaterDrag;
}
else if (worldPlayer.Current == BlockID.Mud && !isGodMode)
{
worldPlayer.m_speedX *= MudDrag;
}
if (worldPlayer.m_speedX > 16)
{
worldPlayer.m_speedX = 16;
}
else if (worldPlayer.m_speedX < -16)
{
worldPlayer.m_speedX = -16;
}
else if (worldPlayer.m_speedX < 0.0001 && worldPlayer.m_speedX > -0.0001)
{
worldPlayer.m_speedX = 0;
}
}
if (!ApproachingZero(worldPlayer.m_speedY) || worldPlayer.m_modifierY != 0)
{
worldPlayer.m_speedY += worldPlayer.m_modifierY;
worldPlayer.m_speedY *= BaseDrag;
if ((worldPlayer.m_my == 0 && worldPlayer.m_mox != 0) ||
(worldPlayer.m_speedY < 0 && worldPlayer.m_my > 0) ||
(worldPlayer.m_speedY > 0 && worldPlayer.m_my < 0) ||
(IsClimbable(worldPlayer.Current) && !isGodMode))
{
worldPlayer.m_speedY *= NoModifierDrag;
}
else if (worldPlayer.Current == BlockID.Water && !isGodMode)
{
worldPlayer.m_speedY *= WaterDrag;
}
else if (worldPlayer.Current == BlockID.Mud && !isGodMode)
{
worldPlayer.m_speedY *= MudDrag;
}
if (worldPlayer.m_speedY > 16)
{
worldPlayer.m_speedY = 16;
}
else if (worldPlayer.m_speedY < -16)
{
worldPlayer.m_speedY = -16;
}
else if (worldPlayer.m_speedY < 0.0001 && worldPlayer.m_speedY > -0.0001)
{
worldPlayer.m_speedY = 0;
}
}
if (!isGodMode)
{
switch (worldPlayer.Current)
{
case BlockID.BoostLeft:
worldPlayer.m_speedX = -Boost;
break;
case BlockID.BoostRight:
worldPlayer.m_speedX = Boost;
break;
case BlockID.BoostUp:
worldPlayer.m_speedY = -Boost;
break;
case BlockID.BoostDown:
worldPlayer.m_speedY = Boost;
break;
}
}
double remainderX = worldPlayer.X % 1;
double currentSX = worldPlayer.m_speedX;
double remainderY = worldPlayer.Y % 1;
double currentSY = worldPlayer.m_speedY;
worldPlayer.m_donex = false;
worldPlayer.m_doney = false;
while ((currentSX != 0 && !worldPlayer.m_donex) || (currentSY != 0 && !worldPlayer.m_doney))
{
ProcessPortals(worldPlayer, ref remainderX, ref currentSX, ref remainderY, ref currentSY);
StepX(worldPlayer, ref remainderX, ref currentSX, ref remainderY, ref currentSY);
StepY(worldPlayer, ref remainderX, ref currentSX, ref remainderY, ref currentSY);
}
if (!worldPlayer.IsDead)
{
if (worldPlayer.SpaceDown)
{
if (worldPlayer.HasLevitation)
{
worldPlayer.m_isThrusting = true;
worldPlayer.m_currentThrust = MaxThrust;
}
}
else if (worldPlayer.HasLevitation)
{
worldPlayer.m_isThrusting = false;
}
switch (worldPlayer.Current)
{
case BlockID.CoinGold:
lock (worldPlayer.CollectedGoldCoins)
{
bool alreadyCollected = false;
for (int i = 0; i < worldPlayer.CollectedGoldCoins.Count; i++)
{
if (worldPlayer.CollectedGoldCoins[i].X == cx &&
worldPlayer.CollectedGoldCoins[i].Y == cy)
{
alreadyCollected = true;
break;
}
}
if (!alreadyCollected)
{
worldPlayer.CollectedGoldCoins.Add(World[cx, cy, Layer.Foreground]);
}
}
break;
case BlockID.CoinBlue:
lock (worldPlayer.CollectedBlueCoins)
{
bool alreadyCollected = false;
for (int i = 0; i < worldPlayer.CollectedBlueCoins.Count; i++)
{
if (worldPlayer.CollectedBlueCoins[i].X == cx &&
worldPlayer.CollectedBlueCoins[i].Y == cy)
{
alreadyCollected = true;
break;
}
}
if (!alreadyCollected)
{
worldPlayer.CollectedBlueCoins.Add(World[cx, cy, Layer.Foreground]);
}
}
break;
}
if (worldPlayer.m_pastx != cx || worldPlayer.m_pasty != cy)
{
switch (worldPlayer.Current)
{
case BlockID.SwitchPurple:
if (World[cx, cy, Layer.Foreground] is PurpleBlock)
{
PurpleBlock block = (PurpleBlock)World[cx, cy, Layer.Foreground];
worldPlayer.m_switches[block.SwitchID] = !worldPlayer.m_switches[block.SwitchID];
}
break;
case BlockID.ToolCheckpoint:
if (!isGodMode)
{
worldPlayer.LastCheckpoint = World[cx, cy, Layer.Foreground];
}
break;
}
worldPlayer.m_pastx = cx;
worldPlayer.m_pasty = cy;
}
if (worldPlayer.HasLevitation)
{
UpdateThrust(worldPlayer);
}
}
var imx = ((int)worldPlayer.m_speedX << 8);
var imy = ((int)worldPlayer.m_speedY << 8);
if (worldPlayer.Current != BlockID.Water && worldPlayer.Current != BlockID.Mud)
{
if (imx == 0)
{
if (worldPlayer.m_modifierX < 0.1 && worldPlayer.m_modifierX > -0.1)
{
double tx = worldPlayer.X % 16;
if (tx < 2)
{
if (tx < 0.2)
{
worldPlayer.X = Math.Floor(worldPlayer.X);
}
else
{
worldPlayer.X -= tx / 15;
}
}
else
{
if (tx > 14)
{
if (tx > 15.8)
{
worldPlayer.X = Math.Ceiling(worldPlayer.X);
}
else
{
worldPlayer.X += (tx - 14) / 15;
}
}
}
}
}
if (imy == 0)
{
if (worldPlayer.m_modifierY < 0.1 && worldPlayer.m_modifierY > -0.1)
{
double ty = worldPlayer.Y % 16;
if (ty < 2)
{
if (ty < 0.2)
{
worldPlayer.Y = Math.Floor(worldPlayer.Y);
}
else
{
worldPlayer.Y -= ty / 15;
}
}
else
{
if (ty > 14)
{
if (ty > 15.8)
{
worldPlayer.Y = Math.Ceiling(worldPlayer.Y);
}
else
{
worldPlayer.Y += (ty - 14) / 15;
}
}
}
}
}
}
}