[code] Adding Armor

[code] Adding Armor
I hope this will be found really helpful to some people. It adds an armor attribute to the player, statusbar, and turns the suit of armor into a pickup. Let's begin. Open VERSION.H and add the following line:


// #define ARMOR

Save and close. Open WL_DEF.H and search for "keys" . You should get the gamestate structure:


//---------------
//
// gamestate structure
//
//---------------

typedef	struct
{
	int			difficulty;
	int			mapon;
	long		oldscore,score,nextextra;
	int			lives;
	int			health;
	int			ammo;
	int			keys;

Add the following underneath int keys :


#ifdef ARMOR
	int			armor;
#endif

If ARMOR is defined in VERSION.H, then gamestate.armor will be defined. Now open WL_AGENT.C and search for GiveAmmo. You should now be at the bottom of the Local Variables section. Add the following definition at the bottom of this section:


#ifdef ARMOR
void	GiveArmor (int points);
#endif

Then delete the DrawWeapon line. Now, search for the TakeDamage Routine. Edit the if(!godmode) statement to read the following:


#ifdef ARMOR
	if (!godmode)
	{
		if (gamestate.armor)
		{
			if ((gamestate.health -= points / 3) >= 0)
			{
				gamestate.health -= ((int)points / 3);
				if (gamestate.health > 115)
					gamestate.health = 115;
			}
			gamestate.armor -= points / 2 + 2;
		}
		else
		{
			gamestate.health -= points;
		}
	}

	if (gamestate.armor <= 0)
		gamestate.armor = 0;

	DrawWeapon ();
#else
		if (!godmode)
		gamestate.health -= points;
#endif

This tells the game that should the player have armor, the amount of damage taken is reduced. Now, search for DrawWeapon and edit it to look like this::


/*
==================
=
= DrawArmor/Draw Weapon
=
= By Deathshead
==================
*/
void DrawWeapon (void)
{
#ifndef ARMOR
	   StatusDrawPic (32,8,KNIFEPIC+gamestate.weapon);
#else
	if (gamestate.armor <=0)		//didn't know where to put this, so used BW2SE source
		gamestate.armor = 0;		//didn't know where to put this, so used BW2SE source

	LatchNumber (34,16,3,gamestate.armor);
#endif
}

This tells the compile that if the user has disabled ARMOR in VERSION.H, then draw the picture of the selected weapon on the status bar. If it IS enabled, then the amount of armor the player has is displayed instead. Three more things to do in WL_AGENT.C . Search for bo_fullheal. You should get something like:


	case	bo_fullheal:
		SD_PlaySound (BONUS1UPSND);
		HealSelf (50);
		GiveExtraMan ();
		gamestate.treasurecount++;
		break;

Add the following under GiveExtraMan ();


#ifdef ARMOR
		GiveArmor (50);	// Edit 50 to suit your needs
#endif

For that to work properly, add the following under the previously editted DrawWeapon Routine:


#ifdef ARMOR
/*
===============
=
= GiveArmor
=
===============
*/

void	GiveArmor (int points)
{
	gamestate.armor += points;
	if (gamestate.armor>100)
		gamestate.health = 100;

	DrawArmor ();
}
#endif

Now, making an item for the Armor. Open up WL_AGENT.C and go back to where you editted the fullheal case. Under that whole case, add the following:


#ifdef ARMOR
	case bo_armor:
		if (gamestate.armor >= 100)
			return;
		SD_PlaySound (BONUS1SND);
		GiveArmor (25);
		break;
#endif

If you wish this to contribute to the treasure count, add the following under GiveArmor (25);


gamestate.treasurecount++;

This means that for every armor pickup you collect, you gain a percentage of total treasure. Now it's time to state how much armor you start off with. Open WL_MAIN.C and search for the NewGame routine:


/*
=====================
=
= NewGame
=
= Set up new game to start from the beginning
=
=====================
*/

void NewGame (int difficulty,int episode)
{
	memset (&gamestate,0,sizeof(gamestate));
	gamestate.difficulty = difficulty;
	gamestate.weapon = gamestate.bestweapon
		= gamestate.chosenweapon = wp_pistol;
	gamestate.health = 100;
	gamestate.ammo = STARTAMMO;
	gamestate.lives = 3;
	gamestate.nextextra = EXTRAPOINTS;
	gamestate.episode=episode;

	startgame = true;
}

Underneath gamestate.health = 100; , add the following:


#ifdef ARMOR
gamestate.armor = 100;		// Change 100 to your liking.
#endif

Save and Close that file then open WL_GAME.C and search for the Died Function. Scroll through that until you find if (gamestate.lives > -1) . For some that might be if (gamestate.lives > 0) . Add the following underneath gamestate.health = 100;


#ifdef ARMOR
gamestate.armor = 100; // Change 100 to your liking
#endif

All that's left is to choose which sprite will become the armor pickup. Open up WL_DEF.H and search for bo_gibs, . Under that, add the following:


#ifdef ARMOR
bo_armor,
#endif

This is to define the bo_armor case you added earlier. If this isn't added, an In this example, I will use the suit of Armor. Open WL_ACT1.C and search for Armor. You will get the following hit:


{SPR_STAT_16,block},			// suit of armor   spr3v
{SPR_STAT_17,block},			// Hanging cage    "
{SPR_STAT_18,block},			// SkeletoninCage  "
{SPR_STAT_19},					// Skeleton relax  "

Change the Suit of Armor line to read the following:


#ifdef ARMOR
{SPR_STAT_16,bo_armor},			// suit of armor   spr3v
#else
{SPR_STAT_16,block},			// suit of armor   spr3v
#endif

If ARMOR is defined in VERSION.H, then the armor is a pickup. Now, if you compiled then tried this, you would find that the knight is transparent, but not yet a pickup. For that to happen, we have to add one more thing. In WL_ACT1.C search for 'bo_firstaid:' in the SpawnStatic Function. Underneath that line, add:


#ifdef ARMOR
case bo_armor:
#endif

That concludes my tutorial. If you use this, let me know, and email me at deathshead.frozenfire@gmail.com , I would like to see your mod! There you go -Deathshead

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