/*

    File:       TEnemySprite.cp

    Contains:   This is the class used to represent the enemy ship in the game.  Eventually,

                one ship class will represent both friendly and enemy ships, since the only

                major difference is the keyset.  A computer controlled ship could be different.

    Written by: Timothy Carroll 

    Copyright:  Copyright © 1996-1999 by Apple Computer, Inc., All Rights Reserved.

                You may incorporate this Apple sample source code into your program(s) without

                restriction. This Apple sample source code has been provided "AS IS" and the

                responsibility for its operation is yours. You are not permitted to redistribute

                this Apple sample source code as "Apple sample source code" after having made

                changes. If you're going to re-distribute the source, we require that you make

                it clear in the source that the code was descended from Apple sample source

                code, but that you've made changes.

    Change History (most recent first):

                7/2/1999    Karl Groethe    Updated for Metrowerks Codewarror Pro 2.1

                1/23/97     Timothy Carroll Added include for Moofwars.h so that MrC

                                            will compile

                8/15/96     Timothy Carroll     Initial Release

*/

#include "Moofwars.h"

#include "TEnemySprite.h"

#include "TShotSprite.h"

TEnemySprite::TEnemySprite (TEnemySpriteData *data):

TSprite((TSpriteData *) data)

{

    fRotateInterval = data->rotateInterval;

    fRotateValue = 0;

    fShotInterval = data->shotInterval;

    fShotValue = 0;

    fShotsGroup = data->shotsGroup;

}

TEnemySprite::~TEnemySprite (void)

{

}

void

TEnemySprite::ProcessSprite ()

{   

    // The enemy can thrust in either direction

    if (CheckKey ((unsigned char *) &gCommandKeys, kEnemyThrustForward))

    {

        fVelocityY -= gSinLookup [fFace] >> 1;

        fVelocityX -= gCosLookup [fFace] >> 1;

    }

    if (CheckKey ((unsigned char *) &gCommandKeys, kEnemyThrustBackward))

    {

        fVelocityY += gSinLookup [fFace] >> 1;

        fVelocityX += gCosLookup [fFace] >> 1;

    }

    // Fire a shot

    if (CheckKey ((unsigned char *) &gCommandKeys, kEnemyFireShots) && fShotValue == 0)

    {

        TShotSpriteData     shotData;

        TShotSprite         *shot;

        int                 index;

        // Delay for next set of shots

        fShotValue = fShotInterval;

        shotData.spriteData.spriteType = TShotSprite::kSpriteType;

        shotData.spriteData.visibility = kVisible;

        shotData.spriteData.face = 1;

        shotData.spriteData.collectionID = 1001;

        shotData.spriteData.preloadedCollection = NULL;

        shotData.duration = 60;

        index = fFace;

        shotData.spriteData.initialX = fCoordX - 60*gCosLookup [index];

        shotData.spriteData.initialY = fCoordY - 60*gSinLookup [index];

        shotData.spriteData.initialXVelocity = fVelocityX - 30*gCosLookup[index];

        shotData.spriteData.initialYVelocity = fVelocityY - 30*gSinLookup[index];

        shot = new TShotSprite (&shotData);

        shot->AddToGroup (fShotsGroup);

    }

    // Rotate right

    if (CheckKey ((unsigned char *) &gCommandKeys, kEnemyRotateRight) && fRotateValue == 0)

    {

        fFace = (fFace+1) % 48;

        fRotateValue = fRotateInterval;

    }

    // Rotate left

    if (CheckKey ((unsigned char *) &gCommandKeys, kEnemyRotateLeft) && fRotateValue == 0)

    {

        fFace = (fFace+47) % 48;

        fRotateValue = fRotateInterval;

    }

    // Adjust our intervals

    if (fRotateValue > 0)

        fRotateValue--;

    if (fShotValue > 0)

        fShotValue--;

    TSprite::ProcessSprite();

    TSprite::Bounce (&gWorldBounds);

}

void

TEnemySprite::Collision (TSprite *theSprite)

{

#if qUsingSound

    if (gPlayingSound)

        HY_PlaySoundHandle (2, gSounds[3], NULL, 0, false);

#endif      

    // We take on some of the velocity of the shot.

    TShotSprite *theTarget = (TShotSprite *) theSprite;

    //this->fCurVelocityX += theTarget->GetXVelocity() >> 9;

    //this->fCurVelocityY += theTarget->GetYVelocity() >> 9;

}