ratcatcher/shared.c

#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <sys/time.h>
#include <sys/types.h>
#include <unistd.h>

#include <math.h>

#include <SDL.h>
#include <SDL_keysym.h>
#include <SDL_rotozoom.h>
#include <SDL_ttf.h>
#include <SDL_framerate.h>

#include "defs.h"
#include "globals.h"
#include "shared.h"


int loadlevel(int wnum, int lnum) {
	FILE *f;
	int x,y;
	char buf[BUFLEN];
	char buf2[BUFLEN];
	char filename[BUFLEN];
	char *help[MAXHELP];
	int numhelp = 0;
	int curhelp;
	char *p;
	int tileid;
	int i;
	int *ii;
	mapping_t mapping[MAXMAPPINGS];
	int nmappings = 0;
	tiletype_t *lasttile;
	int newversion;
	int numanim = 0;
	int tempanim[LEVELW*LEVELH];


	if (!level) level = malloc(sizeof(level_t));

	if (level->animtiles) free(level->animtiles);

	level->id = 0;
	sprintf(level->name, "Level %d-%d",wnum,lnum);
	level->prev = NULL;
	level->next = NULL;

	/* default */
	level->hurryuptime = 30;
	level->p1x = 0;
	level->p1y = 0;

	sprintf(filename, "world%d/level%d.dat",wnum,lnum);
	f = fopen(filename,"rt");
	if (!f) {
		printf("can't open level file\n");
		return B_TRUE;
	}


	/* clear tiletype linked list */
	while (tiletype != NULL) {
		int i;
		tiletype_t *tt;

		/* kill first tile */
		for (i = 0; i < tiletype->numframes; i++) {
			if (tiletype->img[i]) {
				SDL_FreeSurface(tiletype->img[i]);
				tiletype->img[i] = NULL; 
			}
		}
		tt = tiletype->next;
		free(tiletype);
		tiletype = tt;
	}

	/* clear player linked list */
	if (sprite != NULL) {
		while (sprite->next) {
			killsprite(sprite->next);
		}
	}

	/* read tileset */
	fgets(buf, BUFLEN, f);
	if (strstr(buf, "tileset") == buf) {
		p = strtok(buf, " ");
		p = strtok(NULL, " ");

		/* strip newline */
		p[strlen(p)-1] = '\0';



		if ( level->tileset) free(level->tileset);
		level->tileset = strdup(p);

		strcat(p, ".tiles");
		
		if (loadtiletypes(p)) {
			printf("Cannot load tileset file: %s\n", p);
			return B_TRUE;
		}

	} else {
		printf("invalid tileset file in line: '%s'\n",buf);
		return B_TRUE;
	}

	/* read background tile */
	fgets(buf, BUFLEN, f);
	if (strstr(buf, "bg") == buf) {
		p = strtok(buf, " ");
		p = strtok(NULL, " ");
		level->bgtileid = atoi(p);
		if (!gettile(level->bgtileid)) {
			printf("invalid background tile id: %d\n",level->bgtileid);
			return B_TRUE;
		}
		//printf("Background tile id is %d (%s)\n",level->bgtileid,(gettile(level->bgtileid)->name));
	} else {
		printf("invalid background tile id line: '%s'\n",buf);
		return B_TRUE;
	}

	/* read hurryup time tile */
	fgets(buf, BUFLEN, f);
	if (strstr(buf, "hurryup") == buf) {
		p = strtok(buf, " ");
		p = strtok(NULL, " ");
		level->hurryuptime = atoi(p);
		//printf("Hurryup time is %d\n",level->hurryuptime);
	} else {
		printf("invalid hurryup time line: '%s'\n",buf);
		return B_TRUE;
	}

	level->nummonsters =  0;

	/* read tile defs */
	nmappings = 0;
	fgets(buf, BUFLEN, f);
	while (!strstr(buf, "endmaps")) {
		strncpy(buf2,buf,BUFLEN);
		p = strtok(buf2, ",");
		if (p == NULL) {
			printf("invalid char->tile mapping: '%s'\n",buf);
			return B_TRUE;
		}
		mapping[nmappings].ch = p[0];
		p = strtok(NULL, ",");
		if (p == NULL) {
			printf("invalid char->tile mapping: '%s'\n",buf);
			return B_TRUE;
		}
		mapping[nmappings].tnum = atoi(p);
		printf("got mapping:  '%c' to %d\n",mapping[nmappings].ch,mapping[nmappings].tnum);
		nmappings++;
		fgets(buf, BUFLEN, f);
	}

	fgets(buf, BUFLEN, f);
	/* read help messages if present */
	if (strstr(buf, "help")) {
		curhelp = 0; // used later
		numhelp = 0;
		fgets(buf, BUFLEN, f);
		while (!strstr(buf, "endhelp")) {
			// strip newline
			buf[strlen(buf)-1] = '\0';
			help[numhelp] = strdup(buf);
			numhelp++;
			fgets(buf, BUFLEN, f);
		}
		
		/* this reads the first line of the level */
		fgets(buf, BUFLEN, f);
	}
	/* read monster definitions if present */
	if (strstr(buf, "monsters")) {
		fgets(buf, BUFLEN, f);
		while (!strstr(buf, "endmonsters")) {
			char ch;
			int monid;
			int x,y;
			// strip newline
			buf[strlen(buf)-1] = '\0';

			strncpy(buf2,buf,BUFLEN);
			p = strtok(buf2, " ");
			if (p == NULL) {
				printf("invalid monster definition (missing type): '%s'\n",buf);
				return B_TRUE;
			}
			ch = p[0]; // type of monster
			monid = chartomonster(ch);
			if (monid < 0) {
				printf("invalid monster definition (invalid type): '%s'\n",buf);
				return B_TRUE;
			}

			p = strtok(NULL, " ");
			if (p == NULL) {
				printf("invalid monster definition (missing x): '%s'\n",buf);
				return B_TRUE;
			}
			x = atoi(p); // monster x pos

			p = strtok(NULL, " ");
			if (p == NULL) {
				printf("invalid monster definition (missing y): '%s'\n",buf);
				return B_TRUE;
			}
			y = atoi(p); // monster y pos


			if (monid == P_PLAYER) {
				level->p1x = x;
				level->p1y = y;
			} else {
				/* place the monster */
				level->initm[level->nummonsters].startx = x*TILEW+(TILEW/2);
				level->initm[level->nummonsters].starty = y*TILEH+(TILEH-2);
				level->initm[level->nummonsters].id = monid;

				if (monid == P_HELP) {
					if (curhelp >= numhelp) {
						printf("Error in level - more help icons than help texts.\n");
						exit(1);
					} else {
						level->initm[level->nummonsters].help = strdup(help[curhelp]);
						curhelp++;
					}
				}

				level->nummonsters++;
			}


			fgets(buf, BUFLEN, f);
		}
		
		/* this reads the first line of the level */
		fgets(buf, BUFLEN, f);
	}

	/* check whether we've got a new or old level version */
	if (strstr(buf, ",")) {
		/* new version */
		newversion = B_TRUE;
		printf("Level data is new version.\n");
	} else {
		/* old version */
		newversion = B_FALSE;
		printf("Level data is old version.\n");
	}

	x = 0;
	y = 0;
	while (!feof(f)) {
		/* process a line of level data */
		if (newversion) {
			strncpy(buf2, buf, BUFLEN);
			p = strtok(buf2, ",");
			while (p) {
				int numframes;
				tileid = atoi(p);
				/* validate it */
				if (!gettile(tileid)) {
					printf("invalid tileid: %d\n",tileid);
					fclose(f);
					return B_TRUE;
				}
				if (x > LEVELW) {
					printf("Too many tiles on line %d: %d,%d\n",y,x,y);
					fclose(f);
					return B_TRUE;
				}
				if (y >= LEVELH) {
					printf("Too many lines at line %d: %d,%d\n",y,x,y);
					fclose(f);
					return B_TRUE;
				}
				/* all okay */
				level->map[y*LEVELW+x] = tileid;

				numframes = gettileframecount(tileid);
				if (numframes == 1) { 
					// not animated
					level->tileframe[y*LEVELW+x] = 0;
				} else {
					// animated
					level->tileframe[y*LEVELW+x] = rand() % numframes;
					tempanim[numanim] = y*LEVELW+x;
					numanim++;
				}

				x++;
				p = strtok(NULL, ",");
			}
			
		} else { /* old level data version */
			for (p = buf; *p; p++) {
				int n,found = 0;
				/* search mappings */
				for (n = 0; n < nmappings; n++) {
					if (mapping[n].ch == *p) {
						tileid = mapping[n].tnum;
						found = B_TRUE;
						break;
					}
				}
				if (!found) {

					if (*p == '~') {
						tileid = T_LAND;
					} else if (*p == '=') {
						tileid = T_LADDER;
					} else if (*p == '-') {
						tileid = T_LADDERTOP;
					} else if (*p == '{') {
						tileid = T_WATERTOP;
					} else if (*p == '}') {
						tileid = T_WATER;
					} else if (*p == '>') {
						tileid = T_RIGHT;
					} else if (*p == '<') {
						tileid = T_LEFT;
					} else if (*p == '^') {
						tileid = T_SPIKES;
					} else if (*p == '|') {
						tileid = T_WATERSPIKES;
					} else if (*p == 'c') {
						tileid = level->bgtileid;
						level->initm[level->nummonsters].startx = x*TILEW+(TILEW/2);
						level->initm[level->nummonsters].starty = y*TILEH+(TILEH-2);
						level->initm[level->nummonsters].id = P_CLOUD;
						level->nummonsters++;
					} else if (*p == 'r') {
						/* figure out background type */
						if (lasttile->solid) {
							tileid = level->map[(y-1)*LEVELW+x];
						} else {
							tileid = lasttile->id;
						}
			
						// tileid = level->bgtileid;
						level->initm[level->nummonsters].startx = x*TILEW+(TILEW/2);
						level->initm[level->nummonsters].starty = y*TILEH+(TILEH-2);
						level->initm[level->nummonsters].id = P_RAT;
						level->nummonsters++;

					} else if (*p == 'S') {
						/* figure out background type */
						if (lasttile->solid) {
							tileid = level->map[(y-1)*LEVELW+x];
						} else {
							tileid = lasttile->id;
						}
			
						// tileid = level->bgtileid;
						level->initm[level->nummonsters].startx = x*TILEW+(TILEW/2);
						level->initm[level->nummonsters].starty = y*TILEH+(TILEH-2);
						level->initm[level->nummonsters].id = P_SNAKE;
						level->nummonsters++;
					} else if (*p == 'a') {
						/* figure out background type */
						if (lasttile->solid) {
							tileid = level->map[(y-1)*LEVELW+x];
						} else {
							tileid = lasttile->id;
						}
			
						level->initm[level->nummonsters].startx = x*TILEW+(TILEW/2);
						level->initm[level->nummonsters].starty = y*TILEH+(TILEH-2);
						level->initm[level->nummonsters].id = P_BEE;
						level->nummonsters++;
					} else if (*p == 's') {
						/* figure out background type */
						if (lasttile->solid) {
							tileid = level->map[(y-1)*LEVELW+x];
						} else {
							tileid = lasttile->id;
						}
			
						level->initm[level->nummonsters].startx = x*TILEW+(TILEW/2);
						level->initm[level->nummonsters].starty = y*TILEH+TILEH;
						level->initm[level->nummonsters].id = P_SPIDER;
						level->nummonsters++;
					} else if (*p == '?') {
						/* figure out background type */
						if (lasttile->solid) {
							tileid = level->map[(y-1)*LEVELW+x];
						} else {
							tileid = lasttile->id;
						}
			
						// tileid = level->bgtileid;
						level->initm[level->nummonsters].startx = x*TILEW+(TILEW/2);
						level->initm[level->nummonsters].starty = y*TILEH+(TILEH-2);
						level->initm[level->nummonsters].id = P_HELP;

						if (curhelp >= numhelp) {
							printf("Error in level - more help icons than help texts.\n");
							exit(1);
						} else {
							level->initm[level->nummonsters].help = strdup(help[curhelp]);
							curhelp++;
						}

						level->nummonsters++;
					} else if (*p == '*') {
						tileid = T_FULL;
					} else if (*p == ';') {
						tileid = T_TELEPORT;
					} else if (*p == ':') {
						tileid = T_TELEPORT2;
					} else if (*p == '.') {
						tileid = T_TELEPORTDEST;
					} else if (*p == '/') {
						tileid = T_SLOPEUP;
					} else if (*p == '\\') {
						tileid = T_SLOPEDOWN;
					} else if (*p == '1') {
						/* figure out background type */
						if (lasttile->solid) {
							tileid = level->map[(y-1)*LEVELW+x];
						} else {
							tileid = lasttile->id;
						}
						level->p1x = x;
						level->p1y = y;
					} else {
						tileid = level->bgtileid;
					}
				}
				if (!gettile(tileid)) {
					printf("invalid tileid: %d\n",tileid);
					fclose(f);
					return B_TRUE;
				}
				if (x > LEVELW) {
					printf("Too many tiles on line %d: %d,%d\n",y,x,y);
					fclose(f);
					return B_TRUE;
				}
				if (y >= LEVELH) {
					printf("Too many lines at line %d: %d,%d\n",y,x,y);
					fclose(f);
					return B_TRUE;
				}
				level->map[y*LEVELW+x] = tileid;

				lasttile = gettile(tileid);
				x++;
			}
		} /* if newversion */

		/* make sure enough data was found */
		if (x < LEVELW+1) {
			printf("Not enough tiles on line: y = %d\n",y);
			fclose(f);
			return B_TRUE;
		}

		/* go to next line */
		y++;
		x = 0;
		fgets(buf, BUFLEN, f);
	}
	fclose(f);



	// copy from our temp buffer into the real one
	level->animtiles = malloc(sizeof(int) * (numanim+1));
	memcpy(level->animtiles,tempanim,numanim*sizeof(int));
	level->animtiles[numanim] = -1;
					//level->animtiles = realloc(level->animtiles, (numanim+2) * sizeof(int)); // leave space for terminator

	if ((numhelp > 0) && (curhelp != numhelp)) {
		printf("WARNING: Unused help text. First unused is '%s'\n",help[curhelp]);
	}

	if (y < LEVELH) {
		printf("Not enough lines in level: last y=%d, should be %d.\n",
			y,LEVELH);
		return B_TRUE;
	}

	if ((level->p1x == 0) || (level->p1y == 0)) {
		printf("Level is missing player 1 start position.\n");
		return B_TRUE;
	}

	/* free help texts */
	for (i = 0; i < numhelp; i++) {
		free(help[i]);
	}

	/* set current level pointer */
	curlevel = level;

	/* add player */
	if (player == NULL) {
		addsprite(P_PLAYER, (curlevel->p1x * TILEW) + (TILEW/2),
				    (curlevel->p1y * TILEH) + TILEH-2 , "Player" , B_TRUE);
	} else {
		player->x = (curlevel->p1x * TILEW) + (TILEW/2);
		player->y = (curlevel->p1y * TILEH) + TILEH-2;
	}
	player = lastsprite;

	/* add monsters */
	for (i = 0; i < level->nummonsters; i++) {
		char name[MIDBUFLEN];
		if (level->initm[i].id == P_HELP) {
			strncpy(name, level->initm[i].help, MIDBUFLEN);
		} else {
			strcpy(name, "Monster");
		}
		addsprite(level->initm[i].id,
			  level->initm[i].startx, level->initm[i].starty, name, B_TRUE);
	}

	gtime = 0;

printf("Loaded level. Animated tiles:  ");
for (ii = level->animtiles ; ii && *ii != -1; ii++) {
	printf("%d ",*ii);
}
printf(".\n");

	return B_FALSE;
}



void setdefaults(sprite_t *s) {
	s->speed = 1;
	s->teleporting = 0;
	s->climbing = 0;
	s->jumping = 0;
	s->jumpspeed = 0;
	s->jumpdir = 1;
	s->netting = 0;
	s->netmax = 1;
	s->netcaught = 0;
	s->netbig = 0;
	s->falling = 0;
	s->fallspeed = 0;
	s->dir = 1;
	s->slamming = 0;
	s->dead = 0;
	s->angry = 0;
	s->invuln = 0;
	s->jumptimer = 0;

	s->bullet = NULL;
	s->owner = NULL;

	s->willbecome = P_CHEESE;

	switch (s->id) {
		case P_BEE:
		case P_CLOUD:
			s->flies = B_TRUE;
			break;
		default:
			s->flies = B_FALSE;
			break;
			
	}

	switch (s->id) {
		case P_CHEESE:
			s->score = 500;
			break;
		case P_ICECREAM:
			s->score = 1000;
			break;
		case P_CHIPS:
			s->score = 2000;
			break;
		case P_BURGER:
			s->score = 4000;
			break;
		case P_FLOWERRED:
			s->score = 5;
			break;
		default:
			s->score = 0;
			break;
			
	}

	s->caughtby = NULL;
	s->caughtstate = 0;

	s->xs = -99;
	s->ys = -99;

	s->doomcount = 0;
}

/* initial is TRUE if we are populating the level for the first time */
sprite_t *addsprite(int id, int x, int y, char *name , int initial) {
	sprite_t *s;

	if (sprite == NULL) {
		sprite = malloc(sizeof(sprite_t));
		s = sprite;
		s->prev = NULL;
	} else {
		s = lastsprite;
		s->next = malloc(sizeof(sprite_t));
		s->next->prev = s;

		s = s->next;
	}


	s->id = id;
	s->x = x;
	s->y = y;
	if (s->id == P_CLOUD) {
		s->img = rotozoomSurfaceXY(imageset[id].img[F_WALK1],0,1,1,0);
	} else {
		s->img = imageset[id].img[F_WALK1];
	}
	if (s->y > (480 - TILEH-1)) {
		s->y = 480 - TILEH-1;
	}
	strcpy(s->name, name);

	if (s == sprite) {
		s->netbg = SDL_CreateRGBSurface(SDL_SWSURFACE,
			200, 64, 
			screen->format->BitsPerPixel, screen->format->Rmask,
			screen->format->Gmask,screen->format->Bmask,
			screen->format->Amask);
	} else {
		s->netbg = NULL;
	}

	setdefaults(s);

	if (!initial) {
		if (isfruit(s->id)) {
			if (s->id != P_HELP) { // help icons don't time out
				s->doomcount = 500;
			}
		}
	}

	s->next = NULL;

	lastsprite = s;

	return s;
}



tiletype_t *gettileat(int pixx,int pixy, int *tilex,int *tiley) {
	int tx,ty;
	tx = pixx / TILEW;
	ty = pixy / TILEH;
	if (tilex != NULL) {
		*tilex = tx;
	}
	if (tiley != NULL) {
		*tiley = ty;
	}

	return gettile(curlevel->map[ty*LEVELW+tx]);
}

int loadtiletypes(char *filename) {
	tiletype_t *t = NULL;
	int i;
	int state;
	FILE *f;
	char buf[BUFLEN];
	char *p,*pp;

	int uniq = 0 ;

	state = 0;
	f = fopen(filename,"rt");
	if (!f) {
		printf("can't open tiles file\n");
		return B_TRUE;
	}

	fgets(buf, BUFLEN, f);
	while (!feof(f)) {
		if (state == 0) {
			if (strstr(buf, "tile") == buf) {
				if (t == NULL) {
					tiletype = malloc(sizeof(tiletype_t));
					t = tiletype;
					t->prev = NULL;
				} else {
					t->next = malloc(sizeof(tiletype_t));
					t->next->prev = t;

					t = t->next;
				}
				p = strtok(buf, " ");
				p = strtok(NULL, " ");
				/* strip newline */
				p[strlen(p)-1] = '\0';
				strcpy(t->name, p);

				/* defaults */
				t->id = 0;
				t->animspeed = 0; // not animated
				t->numframes = 1; // not animated
				t->water = B_FALSE;
				t->spikes = B_FALSE;
				t->solid = B_TRUE;
				for (i = 0; i < TILEW; i++) {
					t->lowness[i] = 0;
				}
				for (i = 0; i < MAXTILEFRAMES; i++) {
					t->img[i] = NULL;
				}
				t->next = NULL;
				state = 1;

				/* unique id */
				t->uniqid = uniq;
				uniq++;
			}
		} else if (state == 1) { /* inside a definition */
			if (strstr(buf, "end") == buf) {

				//printf("got tile %d: %s (solid=%d)\n",t->id,t->name,t->solid);
				/* check */
				state = 0;
			} else if (strstr(buf, "id") == buf) {
				p = strtok(buf, " ");
				p = strtok(NULL, " ");
				t->id = atoi(p);
			} else if (strstr(buf, "animspeed") == buf) {
				p = strtok(buf, " ");
				p = strtok(NULL, " ");
				t->animspeed = atoi(p);
			} else if (strstr(buf, "lowness") == buf) {
				p = strtok(buf, " ");
				p = strtok(NULL, " ");
				pp = strtok(p, ",");
				for (i = 0;i < TILEW; i++) {
					t->lowness[i] = atoi(pp);
					pp = strtok(NULL, ",");
				}
			} else if (strstr(buf, "solid") == buf) {
				p = strtok(buf, " ");
				p = strtok(NULL, " ");
				t->solid = atoi(p);
			} else if (strstr(buf, "spikes") == buf) {
				p = strtok(buf, " ");
				p = strtok(NULL, " ");
				t->spikes = atoi(p);
			} else if (strstr(buf, "water") == buf) {
				p = strtok(buf, " ");
				p = strtok(NULL, " ");
				t->water = atoi(p);
			} else if (strstr(buf, "file") == buf) {
				int frame;

				/* strip newline */
				buf[strlen(buf)-1] = '\0';

				p = strtok(buf, " ");

				// read all images
				frame = 0;
				p = strtok(NULL, " ");
				while (p) {
					if (t->img[frame]) {
						SDL_FreeSurface(t->img[frame]);
						t->img[frame] = NULL;
					}
					t->img[frame] = IMG_Load(p);
					if (!t->img[frame]) {
						printf("cannot load tile image file: '%s'\n",p);
						fclose(f);
						return B_TRUE;
					}
					// black is transparent
					SDL_SetColorKey(t->img[frame], SDL_SRCCOLORKEY, SDL_MapRGB(screen->format, 0, 0, 0));

					// get next one
					frame++;
					p = strtok(NULL, " ");
				}
				t->numframes = frame;
				// default animation speed 
				t->animspeed = 20;

			}
		}
		fgets(buf, BUFLEN, f);
	}

	fclose(f);
	return B_FALSE;

}

int loadimagesets(void) {
	int p,i;
	SDL_Surface *tempimg;

	SDL_Surface *reds;

	loadspriteimage(P_PLAYER,F_WALK1, "sprites/pdwarf.png");
	loadspriteimage(P_PLAYER,F_JUMP, "sprites/pdwarfjump.png");
	loadspriteimage(P_PLAYER,F_FALL, "sprites/pdwarffall.png");
	loadspriteimage(P_PLAYER,F_CAUGHT, "sprites/pdwarf.png");
	loadspriteimage(P_PLAYER,F_DEAD, "sprites/dwarfdie.png");
	/* next 3 are auto generated */
	loadspriteimage(P_PLAYER,F_CLIMB1, "sprites/dclimb1.png");
	loadspriteimage(P_PLAYER,F_CLIMB2, "sprites/dclimb2.png");
	imageset[P_PLAYER].numimages = 10;

	loadspriteimage(P_SNAKE,F_WALK1, "sprites/snake.bmp");
	loadspriteimage(P_SNAKE,F_JUMP, "sprites/snakejump.bmp");
	loadspriteimage(P_SNAKE,F_FALL, "sprites/snakejump.bmp");
	loadspriteimage(P_SNAKE,F_CAUGHT, "sprites/snakecaught.bmp");
	loadspriteimage(P_SNAKE,F_DEAD, "sprites/snakedead.bmp");
	/* next 3 are auto generated */
	imageset[P_SNAKE].numimages = 8;


	loadspriteimage(P_RAT,F_WALK1, "sprites/rat.bmp");
	loadspriteimage(P_RAT,F_JUMP, "sprites/ratjump.bmp");
	loadspriteimage(P_RAT,F_FALL, "sprites/ratjump.bmp");
	loadspriteimage(P_RAT,F_CAUGHT, "sprites/ratcaught.bmp");
	loadspriteimage(P_RAT,F_DEAD, "sprites/ratdead.bmp");
	/* next 3 are auto generated */
	imageset[P_RAT].numimages = 8;

	loadspriteimage(P_BEE,F_WALK1, "sprites/bee.bmp");
	loadspriteimage(P_BEE,F_JUMP, "sprites/beejump.bmp");
	loadspriteimage(P_BEE,F_FALL, "sprites/beejump.bmp");
	loadspriteimage(P_BEE,F_CAUGHT, "sprites/beecaught.bmp");
	loadspriteimage(P_BEE,F_DEAD, "sprites/beedead.bmp");
	/* next 3 are auto generated */
	imageset[P_BEE].numimages = 8;

	loadspriteimage(P_SPIDER,F_WALK1, "sprites/spider.bmp");
	loadspriteimage(P_SPIDER,F_JUMP, "sprites/spiderjump.bmp");
	loadspriteimage(P_SPIDER,F_FALL, "sprites/spiderfall.bmp");
	loadspriteimage(P_SPIDER,F_CAUGHT, "sprites/spidercaught.bmp");
	loadspriteimage(P_SPIDER,F_DEAD, "sprites/spiderdead.bmp");
	/* next 3 are auto generated */
	imageset[P_SPIDER].numimages = 8;

	loadspriteimage(P_CLOUD,F_WALK1, "sprites/cloud.bmp");
	loadspriteimage(P_CLOUD,F_JUMP, "sprites/cloud.bmp");
	loadspriteimage(P_CLOUD,F_FALL, "sprites/cloud.bmp");
	loadspriteimage(P_CLOUD,F_CAUGHT, "sprites/cloud.bmp");
	loadspriteimage(P_CLOUD,F_DEAD, "sprites/cloud.bmp");
	imageset[P_CLOUD].numimages = 2;

	loadspriteimage(P_CHEESE,F_WALK1, "sprites/cheese.bmp");
	imageset[P_CHEESE].numimages = 1;

	loadspriteimage(P_ICECREAM,F_WALK1, "sprites/icecream.bmp");
	imageset[P_ICECREAM].numimages = 1;

	loadspriteimage(P_CHIPS,F_WALK1, "sprites/chips.bmp");
	imageset[P_CHIPS].numimages = 1;

	loadspriteimage(P_BURGER,F_WALK1, "sprites/burger.bmp");
	imageset[P_BURGER].numimages = 1;

	loadspriteimage(P_SPEED,F_WALK1, "sprites/speed.bmp");
	imageset[P_SPEED].numimages = 1;

	loadspriteimage(P_NUMNETS,F_WALK1, "sprites/numnets.bmp");
	imageset[P_NUMNETS].numimages = 1;

	loadspriteimage(P_BIGNET,F_WALK1, "sprites/bignet.bmp");
	imageset[P_BIGNET].numimages = 1;

	loadspriteimage(P_HELP,F_WALK1, "sprites/help.bmp");
	imageset[P_HELP].numimages = 1;

	loadspriteimage(P_FLOWERRED,F_WALK1, "sprites/flower-red.png");
	imageset[P_FLOWERRED].numimages = 1;

	/* bullets */
	loadspriteimage(P_SPIT,F_WALK1, "sprites/spit.bmp");
	imageset[P_SPIT].numimages = 1;


	

	/* generate rotated/flipped images */
	for (p = 0; p < MAXPTYPES; p++) {
		if (!isfruit(p) && !isbullet(p)) {
			tempimg = rotozoomSurface(imageset[p].img[F_DEAD],90,1,0);
			imageset[p].img[F_DEAD2] = SDL_DisplayFormat(tempimg);

			tempimg = rotozoomSurface(imageset[p].img[F_DEAD],180,1,0);
			imageset[p].img[F_DEAD3] = SDL_DisplayFormat(tempimg);

			tempimg = rotozoomSurface(imageset[p].img[F_DEAD],270,1,0);
			imageset[p].img[F_DEAD4] = SDL_DisplayFormat(tempimg);
		}

		for (i = 0; i < imageset[p].numimages; i++) {
			SDL_Surface *origi;

			SDL_SetColorKey(imageset[p].img[i], 
				SDL_SRCCOLORKEY, SDL_MapRGB(screen->format, 0, 0, 0));

			origi = imageset[p].img[i];


			/* flipped image */
			imageset[p].img[MAXFRAMES+i] = 
				rotozoomSurfaceXY(imageset[p].img[i], 0, -1,1,0);
			SDL_SetColorKey(imageset[p].img[MAXFRAMES+i], 
				SDL_SRCCOLORKEY, SDL_MapRGB(screen->format, 0, 0, 0));



			/* angry image */
			reds = SDL_CreateRGBSurface(SDL_SWSURFACE,
				origi->w,
				origi->h,
				origi->format->BitsPerPixel, origi->format->Rmask,
				origi->format->Gmask,origi->format->Bmask, 0);
			SDL_FillRect(reds, NULL, SDL_MapRGB(reds->format, 255, 0, 0));
			SDL_SetAlpha(reds, SDL_SRCALPHA,100);

			imageset[p].img[MAXFRAMES*2+i] = rotozoomSurfaceXY(origi, 0, 1,1,0);


			SDL_BlitSurface(reds, NULL, imageset[p].img[MAXFRAMES*2+i], NULL);
			SDL_FreeSurface(reds);

			temps = SDL_DisplayFormat(imageset[p].img[MAXFRAMES*2+i]);
			SDL_FreeSurface(imageset[p].img[MAXFRAMES*2+i]);
			imageset[p].img[MAXFRAMES*2+i] = temps;

			SDL_SetColorKey(imageset[p].img[MAXFRAMES*2+i], 
				SDL_SRCCOLORKEY, SDL_MapRGB(imageset[p].img[MAXFRAMES*2+i]->format, 101, 0, 0));


			/* flipped angry image */
			reds = SDL_CreateRGBSurface(SDL_SWSURFACE,
				origi->w,
				origi->h,
				origi->format->BitsPerPixel, origi->format->Rmask,
				origi->format->Gmask,origi->format->Bmask, 0);
			SDL_FillRect(reds, NULL, SDL_MapRGB(reds->format, 255, 0, 0));
			SDL_SetAlpha(reds, SDL_SRCALPHA,100);

			imageset[p].img[MAXFRAMES*3+i] = rotozoomSurfaceXY(origi, 0, -1,1,0);


			SDL_BlitSurface(reds, NULL, imageset[p].img[MAXFRAMES*3+i], NULL);
			SDL_FreeSurface(reds);

			temps = SDL_DisplayFormat(imageset[p].img[MAXFRAMES*3+i]);
			SDL_FreeSurface(imageset[p].img[MAXFRAMES*3+i]);
			imageset[p].img[MAXFRAMES*3+i] = temps;

			SDL_SetColorKey(imageset[p].img[MAXFRAMES*3+i], 
				SDL_SRCCOLORKEY, SDL_MapRGB(imageset[p].img[MAXFRAMES*3+i]->format, 101, 0, 0));

		}
	}
	
	return B_FALSE;
}


void drawsprite(sprite_t *s) {
	SDL_Rect area;
	int frame;

	/* select frame */
	if (isfruit(s->id)) {
		frame = F_WALK1;
	} else if (isbullet(s->id)) {
		frame = F_WALK1;
	} else if (s->dead) {
		if (s == player) {
			frame = F_DEAD;
		} else {
			frame = F_DEAD + ((timer/2) % 4);
		}
	} else if (s->caughtby) {
		frame = F_CAUGHT;
	} else if (s->climbing) {
		frame = F_CLIMB1 + ((timer/12) % 2);
	} else if (s->jumping) {
		frame = F_JUMP;
	} else if (s->falling) {
		frame = F_FALL;
	} else if (!s->teleporting) {
		if ((s->id == P_SPIDER) && (s->ys != -99)) {
			frame = F_FALL;
		} else {
			if (s->moved) {
				if ((timer/12) % 2 == 0) {
					frame = F_WALK1;
				} else {
					frame = F_JUMP;
				}
			} else {
				frame = F_WALK1;
			}
		}

	}

	/* x-flip if required */
	if (s->dir == -1) {
		frame += MAXFRAMES;
	}
	/* make red if required */
	if (s->angry) {
		frame += (MAXFRAMES*2);
	}

	if ((s->id != P_CLOUD) && (!s->teleporting)) {
		s->img = imageset[s->id].img[frame];
	}


	/* spider's climbing web  */
	if ((s->id == P_SPIDER) && ((s->ys != -99) || s->falling) && (!s->dead) && (!s->caughtby)) {
		tiletype_t *tt;
		int x = s->x;
		int y = s->y - s->img->h/2;
		int tx=0,ty = 0;
		int done = B_FALSE;
		for (y = s->y ; !done ; y-= TILEH) {
			tt = gettileat(x,y,&tx,&ty);
			if ((tt == NULL) || (tt->solid)) {
				done = B_TRUE;
			}
		}
		drawline16(screen,s->x,s->y - (s->img->h/2),s->x,ty*TILEH+TILEH-1,white);
		
	}


	area.x = s->x - (s->img->w/2);
	area.y = s->y - (s->img->h);
	area.w = 0;
	area.h = 0;

	if (area.y < (480-s->img->h)) {
		if (s->invuln) {
			if (timer % 2 == 0) {
				SDL_BlitSurface(s->img, NULL, screen, &area);
			}
		} else {
			SDL_BlitSurface(s->img, NULL, screen, &area);
			/* for opengl */
			//SDL_UpdateRect(screen, area.x, area.y, area.w, area.h);
		}
	}


	/* caughtby lines */
	if ((s->caughtby) && (s->caughtstate == 2)){
		drawline16(screen, s->x,s->y - s->img->h,
			s->caughtby->x,s->caughtby->y-(s->caughtby->img->h/2), white);
		drawline16(screen, s->x,s->y - (s->img->h/2),
			s->caughtby->x,s->caughtby->y-(s->caughtby->img->h/2), white);
		drawline16(screen, s->x,s->y,
			s->caughtby->x,s->caughtby->y-(s->caughtby->img->h/2), white);
	}


}


void killsprite(sprite_t *s) {
	sprite_t *nextone, *lastone;
	sprite_t *s2;

	/* remove references to this sprite before removing it */
	for (s2 = sprite ; s2 ; s2 = s2->next) {
		if (s2->owner == s) {
			s2->owner = NULL;
		}
		if (s2->bullet == s) {
			s2->bullet = NULL;
		}
	}

	nextone = s->next;
	if (nextone != NULL) {
		nextone->prev = s->prev;
	} else { /*last sprite */
		lastsprite = s->prev;
	}

	if (s->prev == NULL) {
		/* first sprite */
		nextone = sprite->next;
		free(sprite);
		sprite = nextone;
	} else {
		lastone = s->prev;
		free (lastone->next );
		lastone->next = nextone;
	}


}

void flip(void) {
	#ifdef OPENGL
	SDL_GL_SwapBuffers();
	SDL_UpdateRect(screen,0,0,screen->w,screen->h);
	#else
	SDL_Flip(screen);
	#endif
}

// returns 0 if tile isn't animated, else the number of frames
int gettileframecount(int tid) {
	tiletype_t *tt;

	tt = gettile(tid);
	return tt->numframes;
}

int isfruit(int id) {
	switch (id) {
		case P_CHEESE:
		case P_ICECREAM:
		case P_CHIPS:
		case P_BURGER:
		case P_SPEED:
		case P_NUMNETS:
		case P_BIGNET:
		case P_HELP:
		case P_FLOWERRED:
			return B_TRUE;
		
	} 

	return B_FALSE;
}

int isbullet(int id) {
	if (id == P_SPIT) return B_TRUE;

	return B_FALSE;
}


inline void drawpixel16(SDL_Surface *screen, int x, int y, SDL_Color c) 
{
    Uint16 *bufp;
    
    /* check x/y */
    if (x >= screen->w) return;
    if (y >= screen->h) return;
    if (x < 0) return;
    if (y < 0) return;

    bufp = (Uint16 *)screen->pixels + (y*screen->pitch / 2) + x;
    *bufp = SDL_MapRGB(screen->format, c.r, c.g, c.b);
}


void drawline16(SDL_Surface *screen, int x1, int y1, int x2, int y2, SDL_Color c) {
	int deltax, deltay;
	int numpixels;
	int d;
	int dinc1,dinc2,xinc1,xinc2,yinc1,yinc2;
	int i;
	int x;
	int y;
	int maskcount = 0;
	int maskindex = 0;



	deltax = (x2 - x1);
	if (deltax < 0) deltax = -deltax;
	deltay = (y2 - y1);
	if (deltay < 0) deltay = -deltay;

	if (deltax >= deltay) {
		numpixels = deltax + 1;
		d = (deltay*2) - deltax;
		dinc1 = deltay << 1;
		dinc2 = (deltay-deltax) << 1;
		xinc1 = 1;
		xinc2 = 1;
		yinc1 = 0;
		yinc2 = 1;
	} else {
		numpixels = deltay + 1;
		d = (deltax*2) - deltay;
		dinc1 = deltax << 1;
		dinc2 = (deltax - deltay) << 1;
		xinc1 = 0;
		xinc2 = 1;
		yinc1 = 1;
		yinc2 = 1;
	}

	if (x1 > x2) {
		xinc1 = - xinc1;
		xinc2 = - xinc2;
	}
	if (y1 > y2) {
		yinc1 = - yinc1;
		yinc2 = - yinc2;
	}

	x = x1; y = y1;

	maskcount = 0;
	maskindex = 0;
	for (i = 0; i < numpixels; i++) {

		drawpixel16(screen,x,y,c);

		

		if (d < 0) {
			d += dinc1;
			x += xinc1;
			y += yinc1;
		} else {
			d += dinc2;
			x += xinc2;
			y += yinc2;
		}
	}
}


void drawbox16(SDL_Surface *screen, int x1, int y1, int x2, int y2, SDL_Color *c, SDL_Color *fc) {
	if (fc != NULL) {
		/* fill */
		if (((x2 - x1) >= 2) && ((y2 - y1) >= 2)) {
			int y;
			for (y = (y1+1) ; y <= (y2-1); y++) {
				drawline16(screen, x1+1, y, x2-1,y,*fc);
			}
		}
	}
	drawline16(screen,x1,y1,x2,y1,*c);
	drawline16(screen,x1,y1,x1,y2,*c);
	drawline16(screen,x1,y2,x2,y2,*c);
	drawline16(screen,x2,y1,x2,y2,*c);
}



int getcolor(SDL_Surface *dest, int x, int y, SDL_Color *col) {
        Uint32 pixel;
        int bpp = dest->format->BytesPerPixel;
	char *ppos;
	unsigned char r,g,b,a;


	ppos = (char *) dest->pixels;

	/* offset y */
	ppos += (dest->pitch * y);
	/* offset x */
	ppos += (bpp * x);

	memcpy(&pixel, ppos, bpp);


	if (dest->format->BitsPerPixel == 32) {
		SDL_GetRGBA(pixel, dest->format, &r,&g,&b, &a);
		col->r = r;
		col->g = g;
		col->b = b;
		col->unused = a;
	} else if (dest->format->BitsPerPixel == 16) {
		SDL_GetRGB(pixel, dest->format, &r,&g,&b);
		col->r = r;
		col->g = g;
		col->b = b;
	} else if (dest->format->BitsPerPixel == 8) {
		*col = dest->format->palette->colors[(Uint8)pixel];
	}


	return 0;
        

}


int chartomonster(char ch) {
	switch (ch) {
		case 'c': return P_CLOUD;
		case 'r': return P_RAT;
		case 'S': return P_SNAKE;
		case 'a': return P_BEE;
		case 's': return P_SPIDER;
		case '?': return P_HELP;
		case '1': return P_PLAYER;
		case '@': return P_FLOWERRED;
	}

	return -1;
}
char monstertochar(int id ) {
	switch (id) {
		case P_CLOUD: return 'c';
		case P_RAT: return 'r';
		case P_SNAKE: return 'S';
		case P_BEE: return 'a';
		case P_SPIDER: return 's';
		case P_HELP: return '?';
		case P_PLAYER: return '1';
		case P_FLOWERRED: return '@';
	}

	return '\0';
}

tiletype_t *gettile(int tid) {
	tiletype_t *t;

	for (t = tiletype; t ; t = t->next) {
		if (t->uniqid == tid) return t;
	}

	return &fakeblock;
}

void drawtile(SDL_Surface *where, int x, int y) {
	SDL_Rect area;
	tiletype_t *tt;
	int frame;
	int offset;

	if ((x < 0) || (y < 0) || (x >= LEVELW) || (y >= LEVELH)) {
		return;
	}

	area.x = x * TILEW;
	area.y = y * TILEH;
	area.w = 0;
	area.h = 0;
	/* draw blank tile first */
	tt = gettile(curlevel->bgtileid);
	SDL_BlitSurface(tt->img[0], NULL, where, &area);

	/* now draw real one */
	offset = y*LEVELW+x;
	tt = gettile(curlevel->map[offset]);
	frame = curlevel->tileframe[offset];
	if (tt->id != curlevel->bgtileid) {
		SDL_BlitSurface(tt->img[frame], NULL, where, &area);
	}

}

void initglobals(void) {
	sprite = NULL;

	level = NULL;

	vidargs = 0;

	/* timers */
	gtime = 0;
	timer = 0;
	toggletimer = 0;

	/* colours */
	red.r = 255; red.g = 0; red.b = 0;
	black.r = 0; black.g = 0; black.b = 0;
	white.r = 255; white.g = 255; white.b = 255;
	green.r = 0; green.g = 255; green.b = 0; 
	yellow.r = 255; yellow.g = 255; yellow.b = 0; 
}



SDL_Surface *loadspriteimage(int spriteid, int frame, char *filename) {
	imageset[spriteid].img[frame] = IMG_Load(filename);

	if (imageset[spriteid].img[frame] == NULL) {
		printf("Error loading image file: %s\n",filename);
		exit(1);
	}
	return imageset[spriteid].img[frame];
}