Glypha3/Source/Play.c

//============================================================================
//----------------------------------------------------------------------------
//									Play.c
//----------------------------------------------------------------------------
//============================================================================

// This (rather large) file handles all player routines while a game is in<69>
// progress. It gets the player's input, moves the player, tests for collisions<6E>
// and generally handles the "main game loop".  Enemies and actually drawing<6E>
// the graphics to the screen are handled in other files.

#include "Externs.h"


#define kFlapImpulse			48
#define kGlideImpulse			12
#define kAirResistance			2
#define kMaxHVelocity			192
#define kMaxVVelocity			512
#define kNumLightningStrikes	5


void SetUpLevel (void);
void ResetPlayer (Boolean);
void OffAMortal (void);
void DoCommandKey (void);
void GetPlayerInput (void);
void HandlePlayerIdle (void);
void HandlePlayerFlying (void);
void HandlePlayerWalking (void);
void HandlePlayerSinking (void);
void HandlePlayerFalling (void);
void HandlePlayerBones (void);
void MovePlayer (void);
void CheckTouchDownCollision (void);
void CheckPlatformCollision (void);
void KeepPlayerOnPlatform (void);
void CheckLavaRoofCollision (void);
void SetAndCheckPlayerDest (void);
void HandleLightning (void);
void FinishLightning (void);
void HandleCountDownTimer (void);
void CheckHighScore (void);


playerType	thePlayer;
enemyType	theEnemies[kMaxEnemies];
KeyMap		theKeys;
Rect		platformRects[6], touchDownRects[6], enemyRects[24];
Rect		enemyInitRects[5];
long		theScore, wasTensOfThousands;
short		numLedges, beginOnLevel, levelOn, livesLeft, lightH, lightV;
short		lightningCount, numEnemies, countDownTimer;
Boolean		playing, pausing, flapKeyDown, evenFrame;
Boolean		doEnemyFlapSound, doEnemyScrapeSound;

extern	handInfo	theHand;
extern	prefsInfo	thePrefs;
extern	Rect		playerRects[11], mainWindowRect;
extern	short		numUpdateRects1, numUpdateRects2, numOwls;
extern	Boolean		quitting, openTheScores;


//==============================================================  Functions
//--------------------------------------------------------------  InitNewGame

// This funciton sets up variables and readies for a new game.  It is called<65>
// only when a the user selects "New Game" - during the course of a game, it<69>
// is  not called again.

void InitNewGame (void)
{								// Initialize a number of game variables.
	countDownTimer = 0;			// Zero count down timer.
	numLedges = 3;				// Initial number of ledges (platforms).
	beginOnLevel = 1;			// Ledge (platform) the player is on (center ledge).
	levelOn = 0;				// Game level on (first level).
	livesLeft = kInitNumLives;	// Number of player lives remaining.
	theScore = 0L;				// Player's score (a long - can go to 2 billion).
	playing = TRUE;				// Flag playing.
	pausing = FALSE;			// Not paused.
	evenFrame = TRUE;			// Set an initial state for evenFrame.
	wasTensOfThousands = 0L;	// Used for noting when player gets an extra life.
	numOwls = 4;				// Number of "owl" enemies for this level.
	
	numUpdateRects1 = 0;		// Init number of "update" rectangles.
	numUpdateRects2 = 0;		// (see Render.c to see what these do)
	
	InitHandLocation();			// Get the mummy hand down in the lava.
	theHand.mode = kLurking;	// Flag the hand in "lurking" mode.
	
	SetUpLevel();				// Set up platforms for first level (wave).
	
	DumpBackToWorkMap();		// Copy background offscreen to "work" offscreen.
	
	UpdateLivesNumbers();		// Display number of lives remaining on screen.
	UpdateScoreNumbers();		// Display the player's score (zero at this point).
	UpdateLevelNumbers();		// Display the level (wave) the player is on.
	
	GenerateEnemies();			// Prepare all enemies for this level.
	ResetPlayer(TRUE);			// Initialize all player variables and put on ledge.
}

//--------------------------------------------------------------  SetUpLevel

// Primarily, this function is called to set up the ledges for the<68>
// current level (wave) the player is on.  It determines how many<6E>
// a