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/**
Vertices.c
Vertex related functions.
@author Clonkonaut, flgr
*/
// Sets both the X and Y-coordinate of one vertex.
// documented in /docs/sdk/script/fn
global func SetVertexXY(int index, int x, int y)
{
// Set vertices.
SetVertex(index, VTX_X, x);
SetVertex(index, VTX_Y, y);
return;
}
// Returns the number of stuck vertices. (of this)
// documented in /docs/sdk/script/fn
global func VerticesStuck()
{
var vertices = 0;
// Loop through vertices.
for (var i = -1; i < GetVertexNum(); i++)
// Solid?
if (GBackSolid(GetVertex(i, VTX_X), GetVertex(i, VTX_Y)))
// Count vertices.
vertices++;
return vertices;
}
// Automatically move an object up to <range> pixels in each direction if it is stuck
// documented in /docs/sdk/script/fn
global func Unstick(int range)
{
if (Stuck())
{
for (var i = 1; i <= (range ?? 7); ++i)
{
for (var d in [[0,-i], [0,i], [-i,0], [i,0]])
{
if (!Stuck(d[0], d[1]))
{
if (Inside(GetX()+d[0], 0, LandscapeWidth()-1) && GetY()+d[1] < LandscapeHeight()) // But do not push outside landscape!
{
return SetPosition(GetX() + d[0], GetY() + d[1]);
}
}
}
}
}
// Unsticking failed (or not stuck).
return false;
}
// Returns whether the object has a vertex with the given CNAT value
global func HasCNAT(int cnat)
{
for (var i = -1; i < GetVertexNum(); i++)
if (GetVertex(i, VTX_CNAT) == cnat)
return true;
return false;
}
// e.g. clonk->SetVertexCNAT(k, CNAT_CollideHalfVehicle, true); for k != 2 makes the clonk behave correctly wrt. to HalfVehicle
global func SetVertexCNAT(int vtx, int val, bool set)
{
if (val == nil || set == nil)
return FatalError("this function requires its second and third parameter to be non-nil");
if (!this)
return FatalError("this function requires object context");
if (vtx == nil)
for (var i = GetVertexNum(); i-->0;)
SetVertexCNAT(i, val, set);
else
SetVertex(vtx, VTX_CNAT, GetVertex(vtx, VTX_CNAT) & ~val | (set && val), 2);
}
// Allow falling down throughg a HalfVehicle platform
global func HalfVehicleFadeJumpStart()
{
if (!this)
return FatalError("this function requires object context");
if (GetEffect("IntHalfVehicleFadeJump", this))
return;
AddEffect("IntHalfVehicleFadeJump", this, 1);
}
global func HalfVehicleFadeJumpStop()
{
if (!this)
return FatalError("this function requires object context");
var fx;
if (fx = GetEffect("IntHalfVehicleFadeJump", this))
fx.Interval = 1;
}
global func FxIntHalfVehicleFadeJumpStart(object target, effect fx, int temp)
{
if (temp)
return FX_OK;
if (!target) {
return FX_Start_Deny;
}
fx.collideverts = CreateArray();
for (var i = target->GetVertexNum(); i-->0;)
if(!(target->GetVertex(i, VTX_CNAT) & CNAT_PhaseHalfVehicle)) {
PushBack(fx.collideverts, i);
target->SetVertexCNAT(i, CNAT_PhaseHalfVehicle, true);
}
fx.origpos = target->GetPosition();
return FX_OK;
}
global func FxIntHalfVehicleFadeJumpTimer(object target, effect fx, int time)
{
if (DeepEqual(target->GetPosition(), fx.origpos))
return FX_OK;
for (var i = GetLength(fx.collideverts); i-- > 0;)
{
if (target->GetMaterial(target->GetVertex(fx.collideverts[i], VTX_X),
target->GetVertex(fx.collideverts[i], VTX_Y)) == Material("HalfVehicle"))
return FX_OK;
}
return FX_Execute_Kill;
// The way this is implemented, it may ignore smaller cracks beteween half-solid masks at high speeds. Fix if necessary.
}
global func FxIntHalfVehicleFadeJumpStop(object target, effect fx, int reason, bool temp)
{
if (reason == FX_Call_RemoveClear)
return;
for (var i = GetLength(fx.collideverts); i-- > 0;)
target->SetVertexCNAT(fx.collideverts[i], CNAT_PhaseHalfVehicle, false);
}
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