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1.1 nick 1: /*
2: * Froggix
3: *
4: * Nicholas DeClario 2009
5: * <nick@declario.com>
6: *
7: * This program is distributed under the GNU Public License
8: * <Insert GNU license blurb here>
9: */
10:
11:
12: /*
13: * Our pretty standard includes
14: */
15: #include <stdio.h>
16: #include <stdlib.h>
17: #include <unistd.h>
18: #include <time.h>
19:
20: #include <SDL.h>
21: #include <SDL_mixer.h>
22: #include <SDL_image.h>
23: #include <SDL_ttf.h>
24:
25: /*
26: * Set some basic definitions
27: */
1.2 ! nick 28: #define VERSION "$Id: froggix.c,v 1.1.1.1 2009-03-27 19:47:27 nick Exp $"
1.1 nick 29: #define TITLE "Froggix"
30: #define SCREEN_WIDTH 640
31: #define SCREEN_HEIGHT 480
32: #define FALSE 0
33: #define TRUE 1
34: #define LIVES 3
35: #define COLORKEY 255, 0, 255
36: #define BGCOLOR 0, 0, 0
37: #define FROGGER_START_X 290
38: #define FROGGER_START_Y 425
39: #define UP 1
40: #define DOWN 2
41: #define LEFT 3
42: #define RIGHT 4
43: #define X 0
44: #define Y 1
45: #define FRAME 24
46: #define HFRAME 12
47: #define HOP_DISTANCE 30
48: #define HOP_SPEED 3
49: #define ROW_BASE 425
50: #define LEFT_SIDE 115
51: #define RIGHT_SIDE 525
52: #define SPLASH 1 /* Death types */
53: #define SPLAT 2
54:
55: /* Point table */
56: #define SCORE_HOP 10
57: #define SCORE_GOAL 50
58: #define SCORE_LEVEL 1000
59: #define SCORE_FLY 150
60: #define SCORE_PINK 200
61: #define SCORE_SECONDS 10
62: #define HIGH_SCORE 4630
63: #define SCORE_FREE_FROG 200
64:
65: /* The green game timer */
66: #define MAX_TIMER 350
67: #define TIMER_SIZE 150
68: #define TIMER_COLOR 32, 211, 0
69: #define TIMER_LOW_COLOR 255, 0, 0
70:
71: /* baddies */
72: #define VEHICLE 0
73: #define LOG 1
74: #define TURTLE 2
75: #define GATOR 3
76: #define SNAKE 4
77: #define BEAVER 5
78:
79: /* Goal areas */
80: #define MAX_GOALS 5
81:
82: /* logs */
83: #define SHORT_LOG 4
84: #define MEDIUM_LOG 6
85: #define LONG_LOG 9
86: #define MAX_WOOD 7
87:
88: /* Turtles */
89: #define DIVE_START_TIME 50
90: #define DIVE_PHASE_TIME 20
91: #define MAX_TURTLES 9
92: #define TURTLE_ANIM_TIME 5
93:
94: /* Vehicles */
95: #define MAX_VEHICLES 40
96:
97:
98: /*
99: * Froggers dstruct
100: */
101: typedef struct {
102: int placement[2];
103: int oldPlacement[2];
104: int direction;
105: int location;
106: int hopCount;
107: int currentRow;
108: int alive;
109: int riding;
110: int ridingIdx;
111: int ridingType;
112: int frogger; /* Are we frogger or bonus frog */
113: int deathType;
114: int deathCount;
115:
116: SDL_Rect src;
117: SDL_Rect dst;
118:
119: Mix_Chunk *s_hop;
120: Mix_Chunk *s_squash;
121: Mix_Chunk *s_splash;
122: Mix_Chunk *s_extra;
123: } froggerObj;
124:
125: /*
126: * Goals
127: */
128: typedef struct {
129: int x, y, w, h;
130: int occupied;
131: int fly;
132: int gator;
133: } goalObj;
134:
135: /*
136: * Vehicles
137: */
138: typedef struct {
139: int placement[2];
140: int oldPlacement[2];
141: int direction; // LEFT or RIGHT
142: int row; // row
143: int speed; // How fast are we traveling
144: int level; // Must be >= this level to display
145:
146: SDL_Rect src;
147: } vehicleObj;
148:
149: /*
150: * It's Log!
151: */
152: typedef struct {
153: int placement[2];
154: int oldPlacement[2];
155: int row; /* Current row we are in */
156: int type; /* SHORT, MEDIUM, or LONG */
157: int speed; /* What speed does the log move at */
158: int hasPink; // Is bonus frog riding
159:
160: SDL_Rect src;
161: } logObj;
162:
163: /*
164: * Turtles
165: */
166: typedef struct {
167: int placement[2];
168: int oldPlacement[2];
169: int row; /* Which row are the turtles in? */
170: int count; /* How many turtles in this group? */
171: int speed; /* How fast are they swimming */
172: int canDive; /* Can this group dive */
173: int diveStep; /* If they can dive, what diving step are then in */
174: int diveTime; /* Current dive time */
175: int animStep; /* Current animation frame */
176: int animDelay; /* The number of ticks to wait between frames */
177:
178: SDL_Rect src;
179: } turtleObj;
180:
181: int keyEvents( SDL_Event event );
182: int mySDLInit( void );
183: void beginGame( void );
184: int loadMedia( void );
185: int heartbeat( void );
186: int updateGameState( void );
187: void configGameScreen( void );
188: void drawGameScreen( void );
189: void drawBackground( void );
190: int getRowPixel ( int row );
191: int collisionRow ( void );
192: int freeFrog( int score );
193: int collideFrogger ( int x, int y, int h, int w );
194: void checkFroggerBorder( void );
195: void levelUp( void );
196: int checkGoals( void );
197: void froggerReset( void );
198: logObj setWood( int type, int speed, int row, int startX );
199: turtleObj setTurtle( int dive, int diveTimer, int speed, int row, int startX, int count );
200: vehicleObj setVehicle( int row, int startX, int speed, int level );
201: goalObj setGoal( int x, int y, int w, int h );
202: void moveFrogger( void );
203: void ridingFrogger( );
204: void drawTitleScreen( void );
205: void drawPauseScreen( void );
206: void drawGameOver( void );
207: int drawDeathSequence( int deathType );
208: int checkTimer( void );
209: void drawScore( int high, int score );
210: void drawNumbers( int num, int x, int y );
211: void drawGoals( void );
212: void drawTimer( int length );
213: void drawLives( int lives );
214: void drawLevel( int level );
215: void drawWood( void );
216: void drawTurtles( void );
217: void drawVehicles( void );
218: void drawImage(SDL_Surface *srcimg, int sx, int sy, int sw, int sh, SDL_Surface *dstimg, int dx, int dy, int alpha );
219: void playSound( Mix_Chunk *sound );
220: void setFullScreenMode( void );
221:
222: int level = 0;
223: int playing = 0;
224: int lives = 0;
225: int players = 0;
226: int score = 0;
227: int givenFreeFrog = 0;
228: int hScore = HIGH_SCORE;
229: int redraw_all = 0;
230: int fullscreen = 0;
231: int drawBG = 0;
232: int goDelay;
233: float timeLeft;
234: froggerObj frogger;
235: logObj wood[MAX_WOOD];
236: turtleObj turtle[MAX_TURTLES];
237: vehicleObj vehicle[MAX_VEHICLES];
238: goalObj goals[MAX_GOALS];
239:
240: Mix_Chunk *s_freeFrog;
241: SDL_Surface *gfx;
242: SDL_Surface *background; // This is the frogger back drop
243: SDL_Rect backgroundRect;
244: SDL_Surface *titleSurface; // Title 'Froggix' image
245: SDL_Surface *screen; //This pointer will reference the backbuffer
246: SDL_Rect leftBorderRect;
247: SDL_Rect rightBorderRect;
248: TTF_Font *font;
249:
250: int debugBorder = 0;
251:
252: /*
253: * int mySDLInit(void);
254: *
255: * This starts the basic SDL initialization for everything we'll need
256: *
257: */
258: int mySDLInit( void ) {
259: int result = 1;
260:
261: if( SDL_Init( SDL_INIT_VIDEO ) != 0 ) {
262: fprintf( stderr, "Warning: Unable to initialize video: %s\n", SDL_GetError( ) );
263: result--;
264: }
265:
266: if( TTF_Init( ) == -1 ) {
267: fprintf( stderr, "Warning: Unable to initialize font engine: %s\n", TTF_GetError( ) );
268: result--;
269: }
270:
271: if( SDL_Init( SDL_INIT_AUDIO ) != 0 ) {
272: fprintf( stderr, "Warning: Unable to initialize audio: %s\n", SDL_GetError( ) );
273: result--;
274: }
275:
276: if( Mix_OpenAudio( 11025, AUDIO_S16, 2, 512 ) < 0 ) {
277: fprintf( stderr, "Warning: Audio set failed: %s\n", SDL_GetError( ) );
278: result--;
279: }
280:
281: screen = SDL_SetVideoMode( SCREEN_WIDTH, SCREEN_HEIGHT, 16, SDL_HWSURFACE );
282:
283: if ( screen == NULL ) {
284: fprintf( stderr, "Error: Unable to set video mode: %s\n", SDL_GetError( ) );
285: result--;
286: }
287:
288: SDL_WM_SetCaption( TITLE, NULL );
289:
290: return result;
291: }
292:
293: /*
294: * void beginGame( void );
295: *
296: * Main game routine
297: */
298: void beginGame( void ) {
299: float next_heartbeat = 0;
300: SDL_Event event;
301: int done = 0;
302:
303: printf ( "D: Starting main game loop\n" );
304:
305: if ( loadMedia( ) <= 0 ) {
306: fprintf( stderr, "Error: Failed to load graphics and audio!\n" );
307: return;
308: }
309:
310: drawBackground( );
311:
312: while( ! done ) {
313: while( SDL_PollEvent( &event ) ) {
314: done = keyEvents( event );
315: }
316:
317: /* Check the heartbeat to see if we're ready */
318: if ( SDL_GetTicks( ) >= next_heartbeat ) {
319: next_heartbeat = SDL_GetTicks( ) + heartbeat( );
320: }
321: SDL_Delay( 30 );
322: }
323:
324: SDL_FreeSurface( gfx );
325: }
326:
327: int loadMedia( void ) {
328: int result = 1;
329:
330: /*
331: * Load frogger's textures and sounds
332: */
333: gfx = IMG_Load( "images/frogger.png" );
334:
335: if ( gfx == NULL ) {
336: fprintf( stderr, "Error: 'images/frogger.bmp' could not be open: %s\n", SDL_GetError( ) );
337: result--;
338: }
339:
340: if ( SDL_SetColorKey( gfx, SDL_SRCCOLORKEY | SDL_RLEACCEL, SDL_MapRGB( gfx->format, COLORKEY ) ) == -1 )
341: fprintf( stderr, "Warning: colorkey will not be used, reason: %s\n", SDL_GetError( ) );
342:
343: background = IMG_Load( "images/gameboard.png" );
344:
345: if ( gfx == NULL ) {
346: fprintf( stderr, "Error: 'images/gameboard.png' could not be open: %s\n", SDL_GetError( ) );
347: result--;
348: }
349:
350: titleSurface = IMG_Load( "images/froggix-title.png" );
351: if ( titleSurface == NULL ) {
352: fprintf( stderr, "Error: 'images/froggix-title.png' could not be open: %s\n", SDL_GetError( ) );
353: result--;
354: }
355:
356: font = TTF_OpenFont( "fonts/CourierNew-Bold.ttf", 22 );
357: if ( font == NULL ) {
358: printf( "TTF_OpenFont: %s\n", TTF_GetError( ) );
359: result--;
360: }
361:
362: frogger.s_hop = Mix_LoadWAV( "sounds/froggix-hop.wav" );
363:
364: if ( frogger.s_hop == NULL )
365: fprintf( stderr, "Warning: dp_frogger_hop.wav could not be opened: %s\n", SDL_GetError( ) );
366:
367: frogger.s_squash = Mix_LoadWAV( "sounds/dp_frogger_squash.wav" );
368: if ( frogger.s_squash == NULL )
369: fprintf( stderr, "Warning: dp_frogger_plunk could not be opened %s\n", SDL_GetError( ));
370:
371: frogger.s_splash = Mix_LoadWAV( "sounds/dp_frogger_plunk.wav" );
372: if ( frogger.s_splash == NULL )
373: fprintf( stderr, "Warning: dp_frogger_splash could not be opened %s\n", SDL_GetError( ));
374:
375: s_freeFrog = Mix_LoadWAV( "sounds/dp_frogger_extra.wav" );
376: if ( s_freeFrog == NULL )
377: fprintf( stderr, "Warning: dp_frogger_extra could not be opened %s\n", SDL_GetError( ));
378:
379: return result;
380: }
381:
382: /*
383: * void keyEvents( void );
384: *
385: * Process the incoming keyboard and mouse events
386: *
387: */
388: int keyEvents( SDL_Event event ) {
389: int done = 0;
390:
391: /* Always check for shutdown */
392: switch( event.type ) {
393: case SDL_QUIT:
394: done = 1;
395: break;
396: case SDL_KEYDOWN:
397: /* printf( "Found key: %i\n", event.key.keysym.sym );*/
398: switch( event.key.keysym.sym ) {
399: case SDLK_ESCAPE:
400: done = 1;
401: break;
402: case 102:
403: setFullScreenMode( );
404: break;
405: default:
406: break;
407: }
408: break;
409: default:
410: break;
411: }
412: /* We are playing the game */
413: if ( level ) {
414: /* Main game playing input */
415: if ( playing ) {
416: if ( event.type == SDL_KEYDOWN && frogger.alive ) {
417: switch( event.key.keysym.sym ) {
418: case SDLK_UP:
419: if ( ! frogger.direction ) {
420: frogger.hopCount = 0;
421: frogger.direction = UP;
422: frogger.currentRow++;
423: playSound( frogger.s_hop );
424: }
425: break;
426: case SDLK_DOWN:
427: if ( ! frogger.direction ) {
428: frogger.hopCount = 0;
429: frogger.direction = DOWN;
430: frogger.currentRow--;
431: playSound( frogger.s_hop );
432: }
433: break;
434: case SDLK_LEFT:
435: if ( ! frogger.direction ) {
436: frogger.hopCount = 0;
437: frogger.direction = LEFT;
438: playSound( frogger.s_hop );
439: }
440: break;
441: case SDLK_RIGHT:
442: if ( ! frogger.direction ) {
443: frogger.hopCount = 0;
444: frogger.direction = RIGHT;
445: playSound( frogger.s_hop );
446: }
447: break;
448: case 108:
449: levelUp( );
450: fprintf( stderr, "Increase level to %i.\n", level );
451: break;
452: default:
453: break;
454: }
455: printf( "x,y,d => %i,%i,%i,%i\n", frogger.placement[X],
456: frogger.placement[Y],
457: frogger.direction,
458: frogger.currentRow );
459: }
460: /* Game over man, game over! */
461: if ( ! lives ) {
462:
463: }
464: }
465: /* we're at the pause screen */
466: else {
467:
468: }
469: }
470: /* Main intro screen input */
471: else {
472: if ( event.type == SDL_KEYUP ) {
473: switch( event.key.keysym.sym ) {
474: case SDLK_ESCAPE:
475: done = 1;
476: break;
477: case SDLK_1:
478: printf( "D: Starting single player game\n" );
479: level = 1;
480: lives = LIVES;
481: playing = TRUE;
482: score = 0;
483: players = 1;
484: redraw_all = 1;
485: break;
486: default:
487: break;
488: }
489: }
490: }
491:
492: return done;
493: }
494:
495: int updateGameState( void ) {
496: /*
497: printf( "D: Updating game state\n" );
498: */
499: if ( ! drawBG ) configGameScreen( );
500:
501: if ( lives <= 0 ) {
502: goDelay++;
503: drawGameOver( );
504: /* Display game over screen for 50 ticks before returning
505: * to the main screen */
506: if ( goDelay > 7 ) {
507: playing = 0;
508: lives = 0;
509: level = 0;
510: }
511: return 500;
512: }
513:
514: drawGameScreen( );
515:
516: return 50;
517: }
518:
519: logObj setWood( int type, int speed, int row, int startX ) {
520: logObj tempWood;
521: int imgPixelSrc = 0;
522:
523: switch( type ) {
524: case LONG_LOG:
525: imgPixelSrc = 0;
526: break;
527: case MEDIUM_LOG:
528: imgPixelSrc = FRAME * LONG_LOG;
529: break;
530: case SHORT_LOG:
531: imgPixelSrc = FRAME * ( LONG_LOG + MEDIUM_LOG );
532: break;
533: }
534:
535: tempWood.row = row;
536: tempWood.type = type;
537: tempWood.speed = speed;
538: tempWood.hasPink = 0;
539: tempWood.placement[X] = LEFT_SIDE + startX;
540: tempWood.placement[Y] = getRowPixel( row );
541: tempWood.oldPlacement[X] = LEFT_SIDE + startX;
542: tempWood.oldPlacement[Y] = getRowPixel( row );
543: tempWood.src.y = FRAME;
544: tempWood.src.x = imgPixelSrc;
545: tempWood.src.w = FRAME * tempWood.type;
546: tempWood.src.h = FRAME;
547:
548: return tempWood;
549: }
550:
551: turtleObj setTurtle( int dive, int diveTimer, int speed, int row, int startX, int count ) {
552: turtleObj tt;
553:
554: tt.row = row;
555: tt.canDive = dive;
556: tt.diveStep = 0;
557: tt.diveTime = diveTimer;
558: tt.animStep = 0;
559: tt.animDelay = 0;
560: tt.speed = speed;
561: tt.count = count;
562: tt.placement[X] = LEFT_SIDE + startX;
563: tt.placement[Y] = getRowPixel( row );
564: tt.oldPlacement[X] = tt.placement[X];
565: tt.oldPlacement[Y] = tt.placement[Y];
566: tt.src.y = FRAME * 2;
567: tt.src.x = 0;
568: tt.src.w = FRAME;
569: tt.src.h = FRAME;
570:
571: return tt;
572: }
573:
574:
575: vehicleObj setVehicle( int row, int startX, int speed, int level ) {
576: vehicleObj v;
577:
578: v.direction = ( row % 2 ) ? LEFT : RIGHT; /* Odd rows travel left, evens go right */
579: v.row = row;
580: v.speed = speed;
581: v.level = level;
582: v.placement[X] = LEFT_SIDE + startX;
583: v.placement[Y] = getRowPixel( row );
584: v.oldPlacement[X] = v.placement[X];
585: v.oldPlacement[Y] = v.placement[Y];
586: v.src.y = FRAME * 2;
587: v.src.x = FRAME * ( 4 + row );
588: v.src.w = ( row == 5 ) ? FRAME * 2 : FRAME; /* Are we a truck? */
589: v.src.h = FRAME;
590:
591: return v;
592: }
593:
594: goalObj setGoals( int x, int y, int w, int h ) {
595: goalObj g;
596:
597: g.x = x;
598: g.y = y;
599: g.w = w;
600: g.h = h;
601: g.occupied = 0;
602: g.fly = 0;
603: g.gator = 0;
604:
605: return g;
606: }
607:
608: void configGameScreen( void ) {
609: drawBG = 1;
610:
611: /*
612: * Draw background map
613: */
614: //drawBackground( );
615: drawImage( background, 0, 0, SCREEN_WIDTH, SCREEN_HEIGHT, screen, 0, 0, 255 );
616:
617: /* Cars drive on rows 1 - 5
618: * Logs are on rows 8, 9 and 11, 8 = short, 9 long, 11 medium
619: * Turtles are on rows 7, 10
620: * Frogger starts on Row 0,
621: * Sidewalk is row 6
622: * and the goal is row 12
623: */
624:
625: /* I MUST figure out a better way to handle the logs, turtles and cars */
626:
627: /* Set up the LONG logs on row 9 first */
628: wood[0] = setWood( LONG_LOG, 3, 9, 0 );
629: wood[1] = setWood( LONG_LOG, 3, 9, 305 );
630: wood[2] = setWood( SHORT_LOG, 2, 8, 25 );
631: wood[3] = setWood( SHORT_LOG, 2, 8, 160 );
632: wood[4] = setWood( SHORT_LOG, 2, 8, 380 );
633: wood[5] = setWood( MEDIUM_LOG, 4, 11, 140 );
634: wood[6] = setWood( MEDIUM_LOG, 4, 11, 440 );
635:
636: drawWood( );
637:
638: /* Configure our turtles */
639: turtle[0] = setTurtle( FALSE, 0, 1, 7, 0, 3 );
640: turtle[1] = setTurtle( TRUE, 0, 1, 7, 125, 3 );
641: turtle[2] = setTurtle( FALSE, 0, 1, 7, 250, 3 );
642: turtle[3] = setTurtle( TRUE, 30, 1, 7, 375, 3 );
643: turtle[4] = setTurtle( FALSE, 0, 2, 10, 100, 2 );
644: turtle[5] = setTurtle( TRUE, 50, 2, 10, 200, 2 );
645: turtle[6] = setTurtle( FALSE, 0, 2, 10, 300, 2 );
646: turtle[7] = setTurtle( TRUE, 10, 2, 10, 400, 2 );
647: turtle[8] = setTurtle( FALSE, 0, 2, 10, 500, 2 );
648:
649: drawTurtles( );
650:
651: /* Configure vehicles */
652: /* row, X, speed */
653: /* Row 1 -- yellow car */
654: vehicle[0] = setVehicle( 1, 0, 1, 1 );
655: vehicle[1] = setVehicle( 1, 100, 1, 3 );
656: vehicle[2] = setVehicle( 1, 200, 1, 1 );
657: vehicle[3] = setVehicle( 1, 300, 1, 1 );
658: // /* Row 2 -- tractor */
659: vehicle[4] = setVehicle( 2, 0, 3, 1 );
660: vehicle[5] = setVehicle( 2, 100, 3, 2 );
661: vehicle[6] = setVehicle( 2, 200, 3, 1 );
662: vehicle[7] = setVehicle( 2, 300, 3, 3 );
663: // /* Row 3 -- pink car */
664: vehicle[8] = setVehicle( 3, 75, 2,1 );
665: vehicle[9] = setVehicle( 3, 150, 2, 3 );
666: vehicle[10] = setVehicle( 3, 225, 2, 1 );
667: vehicle[11] = setVehicle( 3, 375, 2, 2 );
668: // /* Row 4 -- white car */
669: vehicle[12] = setVehicle( 4, 75, 5, 1 );
670: vehicle[13] = setVehicle( 4, 150, 5, 3 );
671: vehicle[14] = setVehicle( 4, 225, 5, 2 );
672: vehicle[15] = setVehicle( 4, 375, 5, 3 );
673: // /* Row 5 -- Trucks */
674: vehicle[16] = setVehicle( 5, 30, 3, 1 );
675: vehicle[17] = setVehicle( 5, 150, 3, 1 );
676: vehicle[18] = setVehicle( 5, 250, 3, 1 );
677: vehicle[19] = setVehicle( 5, 350, 3, 3 );
678:
679: drawVehicles( );
680:
681: /* Configure the goals for frogger */
682: goals[0] = setGoals( LEFT_SIDE + 3, 55, 43, 35 );
683: goals[1] = setGoals( LEFT_SIDE + 91, 55, 43, 35 );
684: goals[2] = setGoals( LEFT_SIDE + 179, 55, 43, 35 );
685: goals[3] = setGoals( LEFT_SIDE + 267, 55, 43, 35 );
686: goals[4] = setGoals( LEFT_SIDE + 355, 55, 43, 35 );
687:
688: /*
689: * Configure the left and right side black borders to conceal logs,
690: * turtles, cars, etc. that go past their boundries
691: */
692: leftBorderRect.x = 0;
693: leftBorderRect.y = 0;
694: leftBorderRect.w = LEFT_SIDE;
695: leftBorderRect.h = SCREEN_HEIGHT;
696:
697: rightBorderRect.x = RIGHT_SIDE;
698: rightBorderRect.y = 0;
699: rightBorderRect.w = SCREEN_WIDTH - RIGHT_SIDE;
700: rightBorderRect.h = SCREEN_HEIGHT;
701:
702:
703: /*
704: * Draw frogger in starting position
705: */
706: froggerReset( );
707: }
708:
709: void drawGameScreen( void ) {
710: /*
711: * Update frogger
712: */
713: if ( frogger.direction ) moveFrogger( );
714: if ( frogger.riding ) ridingFrogger( );
715:
716: /* Check for collisions with frogger */
717: if ( frogger.alive ) {
718: if ( frogger.currentRow > 6 && frogger.currentRow < 12 ) {
719: if ( ( ! collisionRow( ) ) || ( frogger.riding == FALSE ) ) {
720: playSound( frogger.s_splash );
721: frogger.deathType = SPLASH;
722: fprintf( stderr, "D: Frog in water!!\n" );
723: frogger.alive = FALSE;
724: }
725: }
726: else if ( frogger.currentRow == 12 ) {
727: if ( collisionRow( ) ) {
728: playSound( frogger.s_squash );
729: frogger.deathType = SPLAT;
730: fprintf( stderr, "D: Frog in thorn bushes!\n" );
731: frogger.alive = FALSE;
732: }
733: }
734: else if( collisionRow( ) ) {
735: playSound( frogger.s_squash );
736: frogger.deathType = SPLAT;
737: fprintf( stderr, "D: Frog Squashed!\n" );
738: frogger.alive = FALSE;
739: }
740: }
741:
742: /*
743: * Update and draw everthing else
744: */
745: drawImage( background, 0, 0, SCREEN_WIDTH, SCREEN_HEIGHT, screen, 0, 0, 255 );
746: drawScore( 0, score );
747: drawScore( 1, hScore );
748: drawGoals( );
749: drawLives( lives );
750: drawLevel( level );
751: drawWood( );
752: drawTurtles( );
753: drawVehicles( );
754:
755: if ( frogger.alive == FALSE ) {
756: if ( ! drawDeathSequence( frogger.deathType ) ) {
757: lives--;
758: if ( lives < 0 ) { drawGameOver( ); }
759: else { froggerReset( ); }
760: }
761: }
762:
763: if ( frogger.alive ) {
764: frogger.alive = checkTimer( );
765: drawImage( gfx, frogger.src.x, frogger.src.y, frogger.src.w,
766: frogger.src.h, screen, frogger.dst.x, frogger.dst.y, 255 );
767: }
768: if ( ! debugBorder ) {
769: SDL_FillRect( screen, &leftBorderRect, SDL_MapRGB( screen->format, BGCOLOR ) );
770: SDL_FillRect( screen, &rightBorderRect, SDL_MapRGB( screen->format, BGCOLOR ) );
771: }
772:
773: SDL_Flip( screen );
774: }
775:
776: void drawBackground( void ) {
777: /*
778: * Draw background map
779: */
780: backgroundRect.x = 0;
781: backgroundRect.y = 0;
782: SDL_BlitSurface( background, NULL, screen, &backgroundRect );
783: SDL_UpdateRect( screen, 0, 0, 0, 0 );
784: }
785:
786: /*
787: * This calculates the pixel top of the requested row
788: */
789: int getRowPixel ( int row ) {
790: return ROW_BASE - ( row * HOP_DISTANCE );
791: }
792:
793: /*
794: * This does collision detection based on the row frogger
795: * is in to help reduce overhead
796: */
797: int collisionRow ( void ) {
798: int i;
799:
800: if ( frogger.currentRow <= 0 ) return 0;
801:
802: /* Check collision with cars */
803: if ( frogger.currentRow < 6 ) {
804: for( i = 0; i < MAX_VEHICLES; i++ ) {
1.2 ! nick 805: if ( level >= vehicle[i].level ) {
! 806: int length = ( vehicle[i].row == 5 ) ? FRAME * 2 : FRAME; /* Trucks */
! 807: if ( collideFrogger( vehicle[i].placement[X],
! 808: vehicle[i].placement[Y], FRAME,
! 809: length ) ) {
! 810: return 1;
! 811: }
1.1 nick 812: }
813: }
814: return 0;
815: }
816: /* check for collisions with turtles, logs, etc.. */
817: else if ( frogger.currentRow > 6 && frogger.currentRow < 12 ) {
818: /* here a collision is good, else death */
819: for( i = 0; i < MAX_TURTLES; i++ ) {
820: if ( collideFrogger( turtle[i].placement[X],
821: turtle[i].placement[Y], FRAME,
822: FRAME * turtle[i].count ) ) {
823: frogger.riding = ( turtle[i].diveStep == 3 ) ? FALSE : LEFT;
824: frogger.ridingIdx = i;
825: frogger.ridingType = TURTLE;
826: return 1;
827: }
828: }
829: for( i = 0; i < MAX_WOOD; i++ ) {
830: if ( collideFrogger( wood[i].placement[X],
831: wood[i].placement[Y], FRAME,
832: FRAME * wood[i].type ) ) {
833: frogger.riding = RIGHT;
834: frogger.ridingIdx = i;
835: frogger.ridingType = LOG;
836: return 1;
837: }
838: }
839: }
840: /* We're on the path, if the snake is active, check that */
841: else if ( frogger.currentRow == 6 ) {
842: frogger.riding = FALSE; /*in case we hopped off a turtle */
843: }
844: /* This leaves the goal area only */
845: else {
846: for ( i = 0; i < MAX_GOALS; i++ ) {
847: if ( collideFrogger( goals[i].x, goals[i].y, goals[i].w, goals[i].h ) ) {
848: if ( goals[i].occupied ) return 1;
849: goals[i].occupied++;
850: /* playSound( s_goal ); */
851: score += SCORE_GOAL;
852: score += ( ( int ) ( timeLeft / 10 ) ) * 10;
853: lives += freeFrog( score );
854: froggerReset( );
855: if ( checkGoals( ) ) levelUp( );
856: return 0;
857: }
858: }
859: return 1;
860: }
861:
862: return 0;
863: }
864:
865: /* If the player gets enough points, award them a free frog */
866: int freeFrog ( int score ) {
867: if ( givenFreeFrog ) return 0;
868: if ( score >= SCORE_FREE_FROG ) {
869: givenFreeFrog++;
870: playSound( s_freeFrog );
871: return 1;
872: }
873: return 0;
874: }
875:
876: /* Check what frogger is colliding with */
877: int collideFrogger ( int x, int y, int h, int w ) {
878: h++; w++;
879:
880: if ( ( frogger.placement[Y] >= ( y + h ) ) ||
881: ( frogger.placement[X] >= ( x + w ) ) ||
882: ( y >= ( frogger.placement[Y] + FRAME ) ) ||
883: ( x >= ( frogger.placement[X] + FRAME ) ) ) {
884: return( 0 );
885: }
886: return( 1 );
887: }
888:
889: /* Check left and right borders */
890: void checkFroggerBorder( void ) {
891: if ( frogger.placement[Y] - 5 >= getRowPixel( 0 ) ) {
892: frogger.placement[Y] = frogger.oldPlacement[Y];
893: frogger.currentRow = 0;
894: }
895:
896: if ( ( frogger.placement[X] <= LEFT_SIDE ) ||
897: ( frogger.placement[X] + frogger.src.w >= RIGHT_SIDE ) ) {
898: if ( ( frogger.currentRow == 0 ) ||
899: ( frogger.currentRow == 6 ) ) {
900: frogger.placement[X] = frogger.oldPlacement[X];
901: }
902: else {
903: frogger.alive = FALSE;
904: }
905: }
906: }
907:
908: void levelUp ( void ) {
909: int i;
910:
911: fprintf ( stderr, "Level %i beat! ", level );
912:
913: level++;
914: score += SCORE_LEVEL;
915: lives += freeFrog( score );
916: froggerReset( );
917: /* Play sounds */
918:
919: /* Empty goals */
920: for ( i = 0; i < MAX_GOALS; i++ ) goals[i].occupied = 0;
921:
922: /* Speed things up */
923: vehicle[0].speed = level;
924: vehicle[1].speed = level;
925: vehicle[2].speed = level;
926: vehicle[3].speed = level;
927:
928: fprintf (stderr, "Starting level %i!\n", level );
929: }
930:
931: int checkGoals ( void ) {
932: int savedFrogs = 0;
933: int i;
934:
935: for ( i = 0; i < MAX_GOALS; i++ ) {
936: if ( goals[i].occupied ) savedFrogs++;
937: }
938:
939: drawGoals( );
940:
941: return ( savedFrogs >= 5 ) ? 1 : 0;
942: }
943:
944: void froggerReset ( void ) {
945: timeLeft = MAX_TIMER;
946:
947: frogger.placement[X] = FROGGER_START_X;
948: frogger.placement[Y] = FROGGER_START_Y;
949: frogger.oldPlacement[X] = FROGGER_START_X;
950: frogger.oldPlacement[Y] = FROGGER_START_Y;
951: frogger.hopCount = 0;
952: frogger.direction = 0;
953: frogger.currentRow = 0;
954: frogger.alive = TRUE;
955: frogger.riding = FALSE;
956: frogger.deathType = 0; /* Death type SPLAT or SPLASH */
957: frogger.deathCount = 0; /* death animation timer */
958:
959: frogger.src.y = 0;
960: frogger.src.x = 0;
961: frogger.src.w = FRAME;
962: frogger.src.h = FRAME;
963: frogger.dst.y = frogger.placement[Y];
964: frogger.dst.x = frogger.placement[X];
965:
966: drawImage( gfx, frogger.src.x, frogger.src.y, frogger.src.w,
967: frogger.src.h, screen, frogger.dst.x, frogger.dst.y, 255 );
968: }
969:
970: /*
971: * This actually moves frogger... I need to come up with a better
972: * algorithm for calculating the distance and time
973: */
974: void moveFrogger( void ) {
975: int currentFrame = 0;
976: int x = 0;
977: int y = 0;
978: int h = FRAME;
979: int w = FRAME;
980: int frameLow = HOP_SPEED / 3;
981: int frameHigh = frameLow * 2;
982:
983: /* Determine which frame of frogger to display */
984: if ( ( frogger.hopCount >= frameLow ) && ( frogger.hopCount <= frameHigh ) )
985: currentFrame = FRAME;
986:
987: frogger.oldPlacement[Y] = frogger.placement[Y];
988: frogger.oldPlacement[X] = frogger.placement[X];
989:
990: switch( frogger.direction ) {
991: case UP:
992: x = currentFrame;
993: frogger.placement[Y] -= ( HOP_DISTANCE / HOP_SPEED );
994: break;
995: case DOWN:
996: x = currentFrame + ( 4 * FRAME );
997: frogger.placement[Y] += ( HOP_DISTANCE / HOP_SPEED );
998: break;
999: case LEFT:
1000: x = currentFrame + ( 6 * FRAME );
1001: frogger.placement[X] -= ( HOP_DISTANCE / HOP_SPEED );
1002: break;
1003: case RIGHT:
1004: x = currentFrame + ( 2 * FRAME );
1005: frogger.placement[X] += ( HOP_DISTANCE / HOP_SPEED );
1006: break;
1007: }
1008:
1009: checkFroggerBorder( );
1010:
1011: /* select the frame to display */
1012: frogger.src.y = y;
1013: frogger.src.x = x;
1014: frogger.src.w = w;
1015: frogger.src.h = h;
1016:
1017: /* Set the old place to be erased */
1018: frogger.dst.y = frogger.oldPlacement[Y];
1019: frogger.dst.x = frogger.oldPlacement[X];
1020:
1021: SDL_FillRect( screen, NULL, SDL_MapRGB( screen->format, BGCOLOR ) );
1022:
1023: /* Place the new position */
1024: frogger.dst.y = frogger.placement[Y];
1025: frogger.dst.x = frogger.placement[X];
1026:
1027: frogger.hopCount++;
1028:
1029: if ( frogger.hopCount >= HOP_SPEED ) {
1030: frogger.hopCount = 0;
1031: frogger.direction = FALSE;
1032: score += SCORE_HOP;
1033: lives += freeFrog( score );
1034: }
1035: }
1036:
1037: void ridingFrogger( void ) {
1038: int speed = 0;
1039:
1040: if ( frogger.hopCount > 0 ) return;
1041:
1042: switch( frogger.ridingType ) {
1043: case LOG:
1044: speed = wood[frogger.ridingIdx].speed;
1045: break;
1046: case TURTLE:
1047: speed = turtle[frogger.ridingIdx].speed + 2;
1048: break;
1049: }
1050:
1051: switch( frogger.riding ) {
1052: case LEFT:
1053: frogger.oldPlacement[X] = frogger.placement[X];
1054: frogger.placement[X] -= speed;
1055: frogger.dst.x = frogger.placement[X];
1056: break;
1057: case RIGHT:
1058: frogger.oldPlacement[X] = frogger.placement[X];
1059: frogger.placement[X] += speed;
1060: frogger.dst.x = frogger.placement[X];
1061: break;
1062: }
1063:
1064: checkFroggerBorder( );
1065: }
1066:
1067: void drawTitleScreen( void ) {
1068: SDL_Surface *introText;
1069: SDL_Color fontColor = { 123, 158, 53, 255 };
1070: int center = ( SCREEN_WIDTH / 2 ) - ( titleSurface->w / 2 );
1071: int i;
1072: char *txt[] = { "Press 1 for single player game",
1073: "Press 2 for two player games",
1074: "Press F for full screen mode",
1075: "Press ESC to quit" };
1076:
1077: // drawBackground( );
1078:
1079: drawImage( titleSurface, 0, 0, titleSurface->w,
1080: titleSurface->h, screen, center, 100, 255 );
1081:
1082: for( i = 0; i <= 3; i++ ) {
1083: introText = TTF_RenderText_Solid( font, txt[i], fontColor );
1084: drawImage( introText, 0, 0, introText->w, introText->h, screen,
1085: 140, 300 + ( i * introText->h ), 255 );
1086: }
1087:
1088: SDL_Flip( screen );
1089: }
1090:
1091: void drawPauseScreen( void ) {
1092: printf( "D: Draw Pause Screen\n" );
1093:
1094: }
1095:
1096: void drawGameOver( void ) {
1097: printf( "D: Game Over\n" );
1098: }
1099:
1100: void playSound( Mix_Chunk *sound ) {
1101: Mix_PlayChannel( -1, sound, 0 );
1102: }
1103:
1104: void setFullScreenMode( void ) {
1105: /* Lets give fullscreen mode a try */
1106: if ( ! fullscreen ) {
1107: screen = SDL_SetVideoMode( SCREEN_WIDTH, SCREEN_HEIGHT, 16, SDL_HWSURFACE | SDL_FULLSCREEN );
1108: fullscreen = TRUE;
1109: }
1110: /* Switch back to window mode */
1111: else {
1112: screen = SDL_SetVideoMode( SCREEN_WIDTH, SCREEN_HEIGHT, 16, SDL_HWSURFACE );
1113: fullscreen = FALSE;
1114: }
1115:
1116: printf( "D: Fullscreen : %i\n", fullscreen );
1117: }
1118:
1119: int drawDeathSequence( int deathType ) {
1120: int animDelay = 55;
1121: int animOffset = ( deathType == SPLAT ) ? 8 : 11;
1122: int dFrame = 0;
1123:
1124: if ( frogger.deathCount < 7 ) dFrame = 0;
1125: if ( frogger.deathCount >= 7 ) dFrame = 1;
1126: if ( frogger.deathCount >= 14) dFrame = 2;
1127: if ( frogger.deathCount > 20 ) animOffset = 12;
1128:
1129: frogger.deathCount++;
1130: if ( frogger.deathCount >= animDelay )
1131: return 0; /* we're done with death */
1132:
1133: drawImage( gfx, FRAME * ( animOffset + dFrame ), 0, FRAME, FRAME,
1134: screen, frogger.placement[X], frogger.placement[Y], 255 );
1135:
1136: return 1;
1137: }
1138:
1139: /* draw green timer and return 0 if out of time */
1140: int checkTimer( void ) {
1141: float lvl = level;
1142: int step = ( int ) ( lvl / 2 );
1143: if ( step < 1 ) step = 1;
1144: if ( step > 3 ) step = 3;
1145: timeLeft -= step;
1146:
1147: drawTimer( (int) ( ( timeLeft / MAX_TIMER ) * TIMER_SIZE ) );
1148:
1149: if ( timeLeft <= 0 ) return 0;
1150: return 1;
1151: }
1152:
1153: void drawScore( int high, int score ) {
1154: int x = 169;
1155: int y = 14;
1156:
1157: if ( score > hScore ) hScore = score;
1158: if ( high ) x = 260;
1159:
1160: drawNumbers( score, x, y );
1161: }
1162:
1163: void drawNumbers( int num, int x, int y ) {
1164: char numStr[6] = "00000";
1165: int i;
1166:
1167: /* Assume anything less than 50 pixels location is a score and
1168: * pad with '0'.
1169: */
1170: if ( y <= 15 ) sprintf( numStr, "%05i", num );
1171: else sprintf( numStr, "%i", num );
1172:
1173: for ( i = 0; i <= 4; i++ ) {
1174: char c = numStr[i];
1175: int n = atoi( &c );
1176:
1177: drawImage( gfx, n * HFRAME, FRAME * 3 , HFRAME, FRAME,
1178: screen, x + ( i * HFRAME ) + 2, y, 255 );
1179: }
1180: }
1181:
1182: /* Normally this functions manages and draws the flys, gators and saved frogs
1183: * but if drawDebugRect below is turned on it will draw the rectangle
1184: * used for collision detectiong for debuggin purposes in timer green
1185: */
1186: void drawGoals( void ) {
1187: int drawDebugRect = 0;
1188: int i;
1189:
1190: for ( i = 0; i < MAX_GOALS; i++ ) {
1191: if ( drawDebugRect ) {
1192: SDL_Rect d;
1193: d.x = goals[i].x;
1194: d.y = goals[i].y;
1195: d.w = goals[i].w;
1196: d.h = goals[i].h;
1197:
1198: SDL_FillRect( screen, &d, SDL_MapRGB( screen->format, TIMER_COLOR ) );
1199: }
1200:
1201: if ( goals[i].occupied )
1202: drawImage( gfx, FRAME * 15, 0, FRAME, FRAME,
1203: screen, goals[i].x + 13, goals[i].y + 5, 255 );
1204: }
1205: }
1206:
1207: void drawTimer( int length ) {
1208: SDL_Rect timerRect;
1209:
1210: timerRect.x = RIGHT_SIDE - 60 - length;
1211: timerRect.y = 465;
1212: timerRect.w = length;
1213: timerRect.h = 15;
1214:
1215: SDL_FillRect( screen, &timerRect, SDL_MapRGB( screen->format, TIMER_COLOR ) );
1216: }
1217:
1218: void drawLives( int lives ) {
1219: int i;
1220: int lifeFroggerSize = 16;
1221:
1222: for( i = 0; i <= lives - 2; i++ ) {
1223: drawImage( gfx, FRAME * 11, FRAME * 2, lifeFroggerSize, FRAME,
1224: screen, LEFT_SIDE + ( lifeFroggerSize * i ), 450, 255 );
1225: }
1226: }
1227:
1228: void drawLevel( int level ) {
1229: int i;
1230: int levelImageSize = 12;
1231:
1232: for( i = 0; i <= level - 1; i++ ) {
1233: drawImage( gfx, FRAME * 12, FRAME * 2, levelImageSize, FRAME,
1234: screen, RIGHT_SIDE - levelImageSize - ( levelImageSize * i ), 450, 255 );
1235: }
1236: }
1237:
1238: void drawWood ( void ) {
1239: int i;
1240:
1241: for ( i = 0; i < MAX_WOOD; i++ ) {
1242: if ( wood[i].placement[X] > ( RIGHT_SIDE + 5 ) )
1243: wood[i].placement[X] = LEFT_SIDE - wood[i].src.w - 5;
1244: wood[i].placement[X] += wood[i].speed;
1245: drawImage( gfx, wood[i].src.x, wood[i].src.y,
1246: wood[i].src.w, wood[i].src.h,
1247: screen, wood[i].placement[X],
1248: wood[i].placement[Y], 255 );
1249: }
1250: }
1251:
1252: void drawTurtles ( void ) {
1253: int i = 0;
1254: int n = 0;
1255: int animFrame = 0;
1256:
1257: for ( i = 0; i < MAX_TURTLES; i++ ) {
1258: /* This managed the turtles basic 3 frames of animation */
1259: animFrame = turtle[i].animStep;
1260: if ( turtle[i].animDelay >= TURTLE_ANIM_TIME ) {
1261: turtle[i].animDelay = 0;
1262: turtle[i].animStep++;
1263: if ( turtle[i].animStep > 2 ) turtle[i].animStep = 0;
1264: }
1265: else {
1266: turtle[i].animDelay++;
1267: }
1268:
1269: /* If a set of turtles have dive capability, this enables that */
1270: if ( turtle[i].canDive ) {
1271: turtle[i].diveTime++;
1272: /* Check if turtle is diving */
1273: if ( turtle[i].diveStep > 0 ) {
1274: switch( turtle[i].diveStep ) {
1275: case 1:
1276: animFrame = 3;
1277: break;
1278: case 2:
1279: animFrame = 4;
1280: break;
1281: case 4:
1282: animFrame = 4;
1283: break;
1284: case 5:
1285: animFrame = 3;
1286: break;
1287: case 6:
1288: turtle[i].diveStep = 0;
1289: turtle[i].diveTime = 0;
1290: break;
1291: default:
1292: animFrame = 4;
1293: break;
1294: }
1295:
1296: if ( turtle[i].diveTime > DIVE_START_TIME + ( DIVE_PHASE_TIME * turtle[i].diveStep ) )
1297: turtle[i].diveStep++;
1298:
1299: }
1300: else {
1301: if ( turtle[i].diveTime > DIVE_START_TIME )
1302: turtle[i].diveStep++;
1303: }
1304: }
1305:
1306: /* Display out turtles */
1307: for ( n = 0; n <= ( turtle[i].count - 1 ); n++ ) {
1308: turtle[i].placement[X] -= turtle[i].speed;
1309: if ( turtle[i].placement[X] <= LEFT_SIDE - ( turtle[i].count * FRAME ) + 10 )
1310: turtle[i].placement[X] = RIGHT_SIDE + 10;
1311: if ( turtle[i].diveStep != 4 )
1312: drawImage( gfx, turtle[i].src.x + ( FRAME * animFrame ),
1313: turtle[i].src.y, turtle[i].src.w, turtle[i].src.h,
1314: screen, turtle[i].placement[X] + ( ( FRAME + 3 ) * n ),
1315: turtle[i].placement[Y], 255 );
1316: }
1317: }
1318: }
1319:
1320: void drawVehicles ( void ) {
1321: int i;
1322:
1323: for ( i = 0; i < MAX_VEHICLES; i++ ) {
1324: if ( vehicle[i].direction == RIGHT ) {
1325: if ( vehicle[i].placement[X] > ( RIGHT_SIDE + 5 ) )
1326: vehicle[i].placement[X] = LEFT_SIDE - vehicle[i].src.w - 5;
1327: vehicle[i].placement[X] += vehicle[i].speed;
1328: }
1329: else {
1330: if ( vehicle[i].placement[X] < ( LEFT_SIDE - 5 ) )
1331: vehicle[i].placement[X] = RIGHT_SIDE + vehicle[i].src.w + 5;
1332: vehicle[i].placement[X] -= vehicle[i].speed;
1333: }
1334:
1335: if ( level >= vehicle[i].level )
1336: drawImage( gfx, vehicle[i].src.x, vehicle[i].src.y,
1337: vehicle[i].src.w, vehicle[i].src.h,
1338: screen, vehicle[i].placement[X],
1339: vehicle[i].placement[Y], 255 );
1340: }
1341: }
1342:
1343: void drawImage( SDL_Surface *srcimg, int sx, int sy, int sw, int sh,
1344: SDL_Surface *dstimg, int dx, int dy, int alpha ) {
1345: if ((!srcimg) || (alpha == 0)) return;
1346: SDL_Rect src, dst;
1347:
1348: src.x = sx; src.y = sy; src.w = sw; src.h = sh;
1349: dst.x = dx; dst.y = dy; dst.w = src.w; dst.h = src.h;
1350:
1351: if (alpha != 255) SDL_SetAlpha(srcimg, SDL_SRCALPHA, alpha);
1352: SDL_BlitSurface(srcimg, &src, dstimg, &dst);
1353: }
1354:
1355: int heartbeat ( void ) {
1356: int ticks;
1357: if ( level ) {
1358: if ( playing ) {
1359: ticks = updateGameState( );
1360: if ( ticks <= 0 ) ticks = 50;
1361: return ticks;
1362: }
1363: else {
1364: drawPauseScreen( );
1365: return 500;
1366: }
1367: }
1368: else {
1369: drawTitleScreen( );
1370: return 500;
1371: }
1372:
1373: return 50;
1374: }
1375:
1376: /*
1377: * Main program starts here. We'll init the video and audio
1378: * and then begin our main program loop here
1379: *
1380: */
1381: int main ( int argc, char **argv ) {
1382: if ( mySDLInit( ) <= 0 ) {
1383: fprintf( stderr, "Failure to start froggix\n" );
1384: return 255;
1385: }
1386:
1387: beginGame( );
1388:
1389: SDL_Quit( );
1390:
1391: return 0;
1392: }