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/* Wall kit */
#include Library_Stackable
func MaxStackCount() { return 4; }
/* Item usage */
func ControlUseStart(object clonk, int x, int y)
{
clonk->Sound("Objects::WallKit::Click");
SetPreview(clonk,x,y);
return true;
}
func HoldingEnabled() { return true; }
func ControlUseHolding(object clonk, int new_x, int new_y)
{
SetPreview(clonk, new_x, new_y);
return true;
}
public func ControlUseStop(object clonk, int x, int y)
{
StopPreview(clonk);
var item = TakeObject();
if (!item) return true; // zero stack count?
item->CreateBridge(clonk, x, y);
if (item) item->RemoveObject();
return true;
}
public func ControlUseCancel(object clonk, int x, int y)
{
StopPreview(clonk);
return true;
}
/* Bridge building */
private func CreateBridge(object clonk, int x, int y)
{
// Get the bridge coordinates.
var c = Offset2BridgeCoords(clonk, x, y);
x = clonk->GetX();
y = clonk->GetY();
// Get living objects near the bridge which are not stuck yet.
var non_stuck_living = clonk->FindObjects(Find_OCF(OCF_Alive), Find_Distance(this.BridgeLength + 8, (c.x1 + c.x2) / 2, (c.y1 + c.y2) / 2));
for (var index = GetLength(non_stuck_living) - 1; index >= 0; index--)
if (non_stuck_living[index]->Stuck())
RemoveArrayIndex(non_stuck_living, index);
// Construct the bridge.
DrawMaterialQuad(BridgeMaterial, x + c.x1 - c.dxm, y + c.y1 - c.dym, x + c.x1 + c.dxp, y + c.y1 + c.dyp, x + c.x2 + c.dxp, y + c.y2 + c.dyp, x + c.x2 - c.dxm, y + c.y2 - c.dym, DMQ_Bridge);
clonk->Sound("Objects::WallKit::Lock");
// Now check whether some of the living objects got stuck and try to move them out of the bridge.
for (var obj in non_stuck_living)
{
var nr_tries = 200;
var try_nr = 0;
var max_dist = 6;
var ox = obj->GetX();
var oy = obj->GetY();
// Unstuck objects by moving them in a random direction.
while (obj->Stuck() && try_nr++ < nr_tries)
{
var try_dist = BoundBy(try_nr * max_dist / nr_tries, 1, max_dist);
obj->SetPosition(ox + RandomX(-try_dist, try_dist), oy + RandomX(- 2 * try_dist, 2 * try_dist));
}
// If still stuck, keep the object at its original position.
if (obj->Stuck())
obj->SetPosition(ox, oy);
}
return true;
}
/* Bridge position calculation */
private func Offset2BridgeCoords(object clonk, int x, int y)
{
// Returns starting and end point offset of bridge to be built as player points to offset x/y
var dx = clonk->GetDefWidth(), dy = clonk->GetDefHeight(), ox, oy, rx, ry;
var l = BridgeLength;
var d = BridgeThickness;
ox = x * 2 / Abs(y + !y);
oy = y * 2 / Abs(x + !x);
ry = ox /= Abs(ox) + !ox;
rx = oy /= Abs(oy) + !oy;
// Offset of the bridge: more for vertical and horizontal bridges.
ox *= dx / 2 + 3 * !oy;
oy *= dy / 2 + 3 * !ox;
// Reduce thickness and length for diagonal bridges.
l -= l * 3 * Abs(rx * ry) / 10;
d -= d * 3 * Abs(rx * ry) / 10;
return { dxp = ry * d / 2, dyp = rx * d / 2, dxm = ry * (d + 1) / 2, dym = rx * (d + 1) / 2, x1 = ox + rx * l, y1 = oy - ry * l, x2 = ox - rx * l, y2 = oy + ry * l };
}
/* Preview */
local preview;
func SetPreview(object clonk, int x, int y)
{
var c = Offset2BridgeCoords(clonk, x, y), clr = 0xffa0a0a0;
x=clonk->GetX(); y=clonk->GetY();
if (!preview)
{
preview = WallKit_Preview->Create(x+c.x1,y+c.y1,x+c.x2,y+c.y2,clr);
preview->SetOwner(clonk->GetOwner());
preview.Visibility = VIS_Owner;
}
else
{
preview->Set(x+c.x1,y+c.y1,x+c.x2,y+c.y2,clr);
}
return true;
}
func StopPreview(object clonk)
{
if (preview) preview->RemoveObject();
return true;
}
/* Impact sound */
func Hit()
{
Sound("Hits::GeneralHit?");
return true;
}
/* Status */
public func IsTool() { return true; }
public func IsToolProduct() { return true; }
local Collectible = 1;
local Name = "$Name$";
local Description = "$Description$";
local BridgeLength = 20;
local BridgeThickness = 5;
local BridgeMaterial = "Granite-granite";
local Components = {Metal = 2};
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