fahhh

App/v8kernel/IStage.h

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+ /* Copyright 2003-2005 ROBLOX Corporation, All Rights Reserved */
+
+#pragma once
+
+#include "rbx/Debug.h"
+#include "Util/G3DCore.h"
+
+namespace RBX {
+
+	class Kernel;
+
+	class RBXBaseClass IStage {
+	public:
+		typedef enum {	CLEAN_STAGE,
+						JOINT_STAGE,
+						GROUND_STAGE,
+						EDGE_STAGE,
+						CONTACT_STAGE,
+						TREE_STAGE,	
+						MOVING_STAGE,
+						SPATIAL_FILTER,
+						MECH_TO_ASSEMBLY_STAGE,
+						ASSEMBLY_STAGE,
+						MOVING_ASSEMBLY_STAGE,
+						STEP_JOINTS_STAGE,
+						HUMANOID_STAGE,
+						SLEEP_STAGE,
+						SIMULATE_STAGE,
+						KERNEL_STAGE} StageType;
+
+	private:
+		IStage*		upstream;
+		IStage*		downstream;
+
+		const IStage* findStageImpl(StageType stageType) const {
+			const IStage* answer = this;
+			while (answer->getStageType() != stageType) {
+				answer = answer->getDownstream();
+			}
+			return answer;
+		}
+
+	public:
+		IStage(IStage* upstream, IStage* downstream) 
+			: upstream(upstream), downstream(downstream)
+		{}
+
+		virtual ~IStage() {
+			if (downstream) {
+				delete downstream;
+			}
+		}
+
+		IStage* getUpstream()				{return upstream;}
+		IStage* getDownstream()				{return downstream;}
+		const IStage* getDownstream() const	{return downstream;}
+
+		virtual StageType getStageType() const = 0;
+
+		const IStage* findStage(StageType stageType) const {
+			return findStageImpl(stageType);
+		}
+
+		IStage* findStage(StageType stageType) {
+			return const_cast<IStage*>(findStageImpl(stageType));
+		}
+
+		virtual Kernel* getKernel()	{
+			RBXASSERT(downstream);
+			return downstream->getKernel();
+		}
+	};
+
+}	// namespace