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//Enhanced Animations for The Game Creators GDK
//Example 1: The Basics
//---------------------------------------------
//by: Ron Erickson 22-Oct-07
#include "DarkGDK.h"
#include "EnhancedAnimations.h"

void DarkGDK ( void )
{
// **********************
// Setup
// **********************
	dbSyncOn		( );
	dbSyncRate		(0);
	dbBackdropOn	( );
	dbAutoCamOff	( );
	dbMaximiseWindow( );
	dbSetWindowOff( );
	dbSetDisplayMode( 1024, 768, 32 );

// **********************
// Load Objects:
// **********************

//	Load Character Model
//  ---------------------------------------------
	dbLoadObject( "media/ai.x", 1 );
	dbYRotateObject( 1, 180 );
	dbFixObjectPivot( 1 );
	dbLoadImage( "media/ai_D2.DDS", 1 );
	dbTextureObject( 1, 1 );

//	Camera
//  ---------------------------------------------
	dbPositionCamera( 35, 65, 100 );
	dbPointCamera( 0, 45, 0);

//	Set the default animation play speed (frames per second)
//  ----------------------------------------------------------
	EnAn_SetDefaultPlaySpeed( 15.0f );

//	EXTRACT ANIMATION DATA FROM MODEL
//	************************************************
//	Normaly, this would be done outside of your game as you are preparing your media.
//  Extracting animations pulls the animation data out of your files
//	and puts it into it's own file format
//	Note: if you set the EndFrame# variable to -1, it will use the last frame in the model
	EnAn_ObjExtractAnimation( 1, "Run.anim", 300, 318 );
	EnAn_ObjExtractAnimation( 1, "Walk.anim", 235, 259 );
	EnAn_ObjExtractAnimation( 1, "Pose.anim", 0, 0 );

//	LOAD ANIMATIONS
//	************************************************
//	This will load the animations that you extracted above
//	The "AnimID" variable is what will be used to refer to your loaded animation
	DWORD PoseAnim = EnAn_AnimLoad("Pose.anim");
	DWORD WalkAnim = EnAn_AnimLoad("Walk.anim");
	DWORD RunAnim = EnAn_AnimLoad("Run.anim");

//	CREATE OAC LINK TO OBJECT
//	************************************************
//	This will allow you to apply animations to an object. It provides the object with all of the
//	internal variables that are needed for control.
//	The "oacID" variable is what will be used to work with that particular DBpro object
//	Each DBpro object that you want to control with Enhanced Animations will need an oacID
	DWORD oacID = EnAn_oacCreate( 1 );


//	PLAY THE WALK ANIMATION
//	************************************************
//	This command will begin playing the Walk animation on the object.
//	The oacID refers to the object that it is linked to.
//	The Limb variable will apply the animation to the specified limb. Enhanced Animations can play animations
//	on entire objects OR specific limbs.
//	The StartFrame and EndFrame parameters describe what is considered the beginning and end of the animation.
//	If the EndFrame parameter is set to a negative number, then the last frame of the animation file will be used
//	The current frame parameter describes what frame to begin playing on. If the loop parameter is set to one (1),
//	then when the animation reaches the end frame, it will start over at the start frame.
//	If the exChild (or Exclude child) parameter is set to one (1), then ONLY the specified limb will have the
//	animation applied to it. Otherwise, the specified limb and all of it's children in the limb hierarchy will have
//	the animation applied to it.
	EnAn_oacPlayAnim( oacID, 1, WalkAnim, 1, 1, -1, 1, 0 );

//	Get the current time value.
	DWORD time = dbTimer();
	DWORD elapsedTime = 0;

// **********************
// Main Loop:
// **********************
	while ( LoopGDK ( ) )
	{
		if ( dbEscapeKey ( ) )
			return;

		//ELAPSED TIME
		//*****************************************
		//	Get the amount of elspsed time since the last time check
		elapsedTime = dbTimer() - time;
		//Reset the time check
		time = dbTimer();

		
		//UPDATE THE OAC
		//*****************************************
		//This will update the object's animation by telling the object how much time has elapsed
		EnAn_oacUpdate( oacID, elapsedTime );

		//TRANSITION TO NEW ANIMATIONS
		//*****************************************
		//Using a transition animation work very similat to Playing an animation (as described above)
		//The only difference is the addition of the TransTime parameter wich tells the object how long
		//it should take for the transition from the currently playing animation to the new animation
		//that you are transitioning to.
		if (dbReturnKey() == 1)
		{
			//Transition to walk over 2 seconds
			EnAn_oacAnimTransition( oacID, 1, WalkAnim, 0.0f, 0.0f, -1.0f, 2000, 1, 0 );
		}

		if (dbSpaceKey())
		{
			//Transition to run over 1 second
			EnAn_oacAnimTransition( oacID, 1, RunAnim, 0.0f, 0.0f, -1.0f, 1000, 1, 0 );
		}
		if (dbShiftKey())
		{
			//Transition to pose over 1 second
			EnAn_oacAnimTransition( oacID, 1, PoseAnim, 0.0f, 0.0f, -1.0f, 1000, 1, 0 );
		}


		dbText ( 0,0,dbStr(dbScreenFPS())														);
		dbText ( 0,10,	"Enhanced Animations for GDK"											);
		dbText ( 0,20,	"Example 01: The Basics"												);
		dbText ( 0,30,	"By: Ron Erickson"														);
		dbText ( 0,40,	"visit: www.GameToolshed.com"											);
		dbText ( 0,50,	"-------------------------------------------------------------------"	);
		dbText ( 0,60,	"  This example shows the basics of how Enhanced Animations works!"		);
		dbText ( 0,70,	"  Press ENTER to switch to Walk animation"								);
		dbText ( 0,80,	"  Press SPACE to switch to Run animation"								);
		dbText ( 0,90,	"  Press SHIFT to switch to POSE"										);
		dbText ( 0,100,	"-------------------------------------------------------------------"	);
		if ( EnAn_oacGetLimbPlayAnimID(oacID, 1) == WalkAnim )
		{
			dbText ( 0,110,	"  Current Play animation: Walk"									);
		}
		if ( EnAn_oacGetLimbPlayAnimID(oacID, 1) == RunAnim )
		{
			dbText ( 0,110,	"  Current Play animation: Run"										);
		}
		if ( EnAn_oacGetLimbPlayAnimID(oacID, 1) == PoseAnim )
		{
			dbText ( 0,110,	"  Current Play animation: Pose"									);
		}
		if (EnAn_oacGetLimbTransIsActive(oacID, 1) == 1 )
		{
			if ( EnAn_oacGetLimbTransAnimID(oacID, 1) == WalkAnim )
			{
				dbText ( 0,120,	"  Switching to: Walk "											);
			}
			if ( EnAn_oacGetLimbTransAnimID(oacID, 1) == RunAnim )
			{
				dbText ( 0,120,	"  Switching to: Run"											);
			}
			if ( EnAn_oacGetLimbTransAnimID(oacID, 1) == PoseAnim )
			{
				dbText ( 0,120,	"  Switching to: Pose"											);
			}
		}
		dbSync ( );
	}
}