Constructor library: Changed to search through all available knowledge and filter using an overloadable function.

The hammer will now only construct definitions that have the callback "IsHammerBuidable". This will exclude all C4D_Structure objects that are not buildings and can't be build in a meaningful way.
Also, with the carry heavy branch I want to test adhoc built lorries (lorries as construction sites). Sven suggested this.

planet/Missions.ocf/Skylands.ocs/Scaffold.ocd/Script.c

@@ -12,6 +12,8 @@ public func Construction()
 	return _inherited(...);
 }
 
+public func IsHammerBuildable() { return true; }
+
 func Initialize()
 {
 	return _inherited(...);

planet/Objects.ocd/Items.ocd/Tools.ocd/Hammer.ocd/Script.c

@@ -15,6 +15,12 @@ public func GetCarryTransform()	{	return Trans_Rotate(-90,1,0,0);	}
 public func IsTool() { return true; }
 public func IsToolProduct() { return true; }
 
+func CanBuild(id construction_plan)
+{
+	if (!construction_plan) return false;
+	if (construction_plan->~IsHammerBuildable()) return true;
+	return false;
+}
 
 /*-- Properties --*/
 

planet/Objects.ocd/Libraries.ocd/Constructor.ocd/Script.c

@@ -41,11 +41,26 @@ public func GetConstructionPlans(int plr)
 {
 	var construction_plans = [];
 	var construct_id, index = 0;
-	while (construct_id = GetPlrKnowledge(plr, nil, index++, C4D_Structure))
-		construction_plans[index-1] = construct_id;
+	while (construct_id = GetPlrKnowledge(plr, nil, index++, C4D_Structure)) // Structures
+		if (CanBuild(construct_id))
+			construction_plans[GetLength(construction_plans)] = construct_id;
+	index = 0;
+	while (construct_id = GetPlrKnowledge(plr, nil, index++, C4D_Vehicle)) // Vehicles
+		if (CanBuild(construct_id))
+			construction_plans[GetLength(construction_plans)] = construct_id;
+	index = 0;
+	while (construct_id = GetPlrKnowledge(plr, nil, index++, C4D_Object)) // Objects
+		if (CanBuild(construct_id))
+			construction_plans[GetLength(construction_plans)] = construct_id;
 	return construction_plans;
 }
 
+// Checks whether a certain construction plans can be built by this constructor.
+// Overload as seem fit.
+func CanBuild(id construction_plan)
+{
+	return true;
+}
 
 /*-- Construction preview --*/
 

planet/Objects.ocd/Structures.ocd/Armory.ocd/Script.c

@@ -16,6 +16,8 @@ func Construction(object creator)
 	return _inherited(creator, ...);
 }
 
+public func IsHammerBuildable() { return true; }
+
 /*-- Production --*/
 
 public func IsProduct(id product_id)

planet/Objects.ocd/Structures.ocd/Basement.ocd/Script.c

@@ -17,6 +17,8 @@ protected func Construction()
 	return _inherited(...);
 }
 
+public func IsHammerBuildable() { return true; }
+
 protected func Initialize()
 {
 	var wdt = GetObjWidth();

planet/Objects.ocd/Structures.ocd/ChemicalLab.ocd/Script.c

@@ -15,6 +15,8 @@ func Construction(object creator)
 	return _inherited(creator, ...);
 }
 
+public func IsHammerBuildable() { return true; }
+
 /*-- Production --*/
 
 public func IsProduct(id product_id)

planet/Objects.ocd/Structures.ocd/Chest.ocd/Script.c

@@ -22,6 +22,8 @@ protected func Construction()
 	return _inherited(...);
 }
 
+public func IsHammerBuildable() { return true; }
+
 /*-- Contents --*/
 
 public func IsContainer() { return true; }

planet/Objects.ocd/Structures.ocd/Compensator.ocd/Script.c

@@ -30,6 +30,8 @@ protected func Construction(object creator)
 	return _inherited(creator, ...);
 }
 
+public func IsHammerBuildable() { return true; }
+
 protected func Initialize()
 {
 	leftcharge = CreateObjectAbove(Compensator_ChargeShower, 7 * GetCalcDir(), 10, NO_OWNER);

planet/Objects.ocd/Structures.ocd/Elevator.ocd/Script.c

@@ -78,6 +78,8 @@ private func Construction()
 	return _inherited(...);
 }
 
+public func IsHammerBuildable() { return true; }
+
 private func Initialize()
 {
 	SetCategory(C4D_StaticBack);

planet/Objects.ocd/Structures.ocd/Flagpole.ocd/Script.c

@@ -33,6 +33,8 @@ protected func Construction()
 	return _inherited(...);
 }
 
+public func IsHammerBuildable() { return true; }
+
 public func NoConstructionFlip() { return true; }
 
 /*-- Interaction --*/

planet/Objects.ocd/Structures.ocd/Foundry.ocd/Script.c

@@ -26,6 +26,8 @@ public func Construction(object creator)
 	return _inherited(creator, ...);
 }
 
+public func IsHammerBuildable() { return true; }
+
 /*-- Production --*/
 
 private func IgnoreKnowledge() { return true; }

planet/Objects.ocd/Structures.ocd/Idol.ocd/Script.c

@@ -6,4 +6,6 @@ local Description = "$Description$";
 local Touchable = 1;
 local Components = {GoldBar = 3};
 
+public func IsHammerBuildable() { return true; }
+
 public func NoConstructionFlip() { return true; }

planet/Objects.ocd/Structures.ocd/InventorsLab.ocd/Script.c

@@ -15,6 +15,8 @@ func Construction(object creator)
 	return _inherited(creator, ...);
 }
 
+public func IsHammerBuildable() { return true; }
+
 /*-- Production --*/
 
 public func IsProduct(id product_id)

planet/Objects.ocd/Structures.ocd/Kitchen.ocd/Script.c

@@ -15,6 +15,8 @@ func Construction(object creator)
 	return _inherited(creator, ...);
 }
 
+public func IsHammerBuildable() { return true; }
+
 /*-- Production --*/
 
 func IsProduct(id product_id)

planet/Objects.ocd/Structures.ocd/Loom.ocd/Script.c

@@ -22,6 +22,8 @@ func Construction(object creator)
 	return _inherited(creator, ...);
 }
 
+public func IsHammerBuildable() { return true; }
+
 /*-- Production --*/
 
 public func IsProduct(id product_id)

planet/Objects.ocd/Structures.ocd/Pump.ocd/Script.c

@@ -48,6 +48,8 @@ func Construction()
 	return _inherited(...);
 }
 
+public func IsHammerBuildable() { return true; }
+
 func Initialize()
 {
 	switched_on = true;

planet/Objects.ocd/Structures.ocd/Sawmill.ocd/Script.c

@@ -19,6 +19,8 @@ public func Construction()
 	return _inherited(...);
 }
 
+public func IsHammerBuildable() { return true; }
+
 public func Initialize()
 {
 	this.SpinAnimation = PlayAnimation("work", 10, Anim_Const(0));

planet/Objects.ocd/Structures.ocd/Shipyard.ocd/Script.c

@@ -22,6 +22,8 @@ func Construction(object creator)
 	return _inherited(creator, ...);
 }
 
+public func IsHammerBuildable() { return true; }
+
 /*-- Production --*/
 
 public func IsProduct(id product_id)

planet/Objects.ocd/Structures.ocd/SteamEngine.ocd/Script.c

@@ -27,8 +27,9 @@ protected func Initialize()
 	return _inherited(...);
 }
 
-public func IsContainer() { return true; }
+public func IsHammerBuildable() { return true; }
 
+public func IsContainer() { return true; }
 
 protected func RejectCollect(id item, object obj)
 {

planet/Objects.ocd/Structures.ocd/ToolsWorkshop.ocd/Script.c

@@ -15,6 +15,8 @@ public func Construction(object creator)
 	return _inherited(creator, ...);
 }
 
+public func IsHammerBuildable() { return true; }
+
 public func Initialize()
 {
 	hold_production = false;

planet/Objects.ocd/Structures.ocd/WindGenerator.ocd/Script.c

@@ -31,6 +31,8 @@ protected func Construction()
 	return;
 }
 
+public func IsHammerBuildable() { return true; }
+
 protected func Initialize()
 {
 	// First initialize the libraries (especially the flag library).

planet/Objects.ocd/Structures.ocd/Windmill.ocd/Script.c

@@ -24,6 +24,8 @@ protected func Construction()
 	return _inherited(...);
 }
 
+public func IsHammerBuildable() { return true; }
+
 protected func Initialize()
 {
 	// Create a helper object for the wheel.