194 lines
4.5 KiB
C
194 lines
4.5 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdarg.h>
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#include "loadpng.h"
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/* converts a png of map to format for our keen engine */
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/* 660x336 image */
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/* 256 sprites of size 2x4 in a 16x16 grid at 8,4 */
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static unsigned char tiles[256][2][4];
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static unsigned char tilemap[128][80];
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static unsigned char temp_tile[2][4];
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static int ascii_output=0;
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int main(int argc, char **argv) {
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int i,j,x,y;
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int numtiles=0,found_tile;
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unsigned char *image;
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int xsize,ysize;
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FILE *outfile;
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int unknown_tiles=0;
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if (argc<3) {
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fprintf(stderr,"Usage:\t%s INFILE OUTFILE\n\n",argv[0]);
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exit(-1);
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}
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outfile=fopen(argv[2],"w");
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if (outfile==NULL) {
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fprintf(stderr,"Error! Could not open %s\n",argv[2]);
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exit(-1);
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}
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if (loadpng(argv[1],&image,&xsize,&ysize,PNG_WHOLETHING)<0) {
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fprintf(stderr,"Error loading png!\n");
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exit(-1);
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}
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fprintf(stderr,"Loaded image %d by %d\n",xsize,ysize);
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// for(x=0;x<128;x++) {
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// for(y=0;y<64;y++) {
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// printf("%02X,",image[(y*xsize)+x]);
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// }
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// printf("\n");
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// }
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/* loading tiles */
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for(x=0;x<16;x++) {
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for(y=0;y<16;y++) {
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tiles[(y*16)+x][0][0]=image[((y*4+4)*xsize)+8+(x*4)];
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tiles[(y*16)+x][1][0]=image[((y*4+4)*xsize)+8+(x*4)+2];
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tiles[(y*16)+x][0][1]=image[((y*4+5)*xsize)+8+(x*4)];
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tiles[(y*16)+x][1][1]=image[((y*4+5)*xsize)+8+(x*4)+2];
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tiles[(y*16)+x][0][2]=image[((y*4+6)*xsize)+8+(x*4)];
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tiles[(y*16)+x][1][2]=image[((y*4+6)*xsize)+8+(x*4)+2];
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tiles[(y*16)+x][0][3]=image[((y*4+7)*xsize)+8+(x*4)];
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tiles[(y*16)+x][1][3]=image[((y*4+7)*xsize)+8+(x*4)+2];
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}
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}
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i=0;
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for(j=0;j<256;j++) {
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if ((tiles[j][0][0]!=0) ||
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(tiles[j][1][0]!=0) ||
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(tiles[j][0][1]!=0) ||
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(tiles[j][1][1]!=0) ||
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(tiles[j][0][2]!=0) ||
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(tiles[j][1][2]!=0) ||
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(tiles[j][0][3]!=0) ||
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(tiles[j][1][3]!=0)) {
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numtiles=j+1;
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}
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}
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printf("Found %d tiles\n",numtiles);
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if (ascii_output) {
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fprintf(outfile,"tiles:\n");
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for(i=0;i<numtiles;i++) {
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fprintf(outfile,"tile%02x:\t.byte ",i);
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fprintf(outfile,"$%02x,",tiles[i][0][0]+(tiles[i][0][1]<<4));
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fprintf(outfile,"$%02x,",tiles[i][1][0]+(tiles[i][1][1]<<4));
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fprintf(outfile,"$%02x,",tiles[i][0][2]+(tiles[i][0][3]<<4));
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fprintf(outfile,"$%02x" ,tiles[i][1][2]+(tiles[i][1][3]<<4));
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fprintf(outfile,"\n");
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}
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}
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else {
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for(i=0;i<256;i++) {
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fputc(tiles[i][0][0]+(tiles[i][0][1]<<4),outfile);
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fputc(tiles[i][1][0]+(tiles[i][1][1]<<4),outfile);
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fputc(tiles[i][0][2]+(tiles[i][0][3]<<4),outfile);
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fputc(tiles[i][1][2]+(tiles[i][1][3]<<4),outfile);
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}
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}
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if (ascii_output) fprintf(outfile,"\n");
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/* loading tilemap */
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/* starts at 80,12 */
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/* 128 * 80 */
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for(x=0;x<128;x++) {
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for(y=0;y<80;y++) {
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/* get temp tile */
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temp_tile[0][0]=image[((y*4+12)*xsize)+80+(x*4)];
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temp_tile[1][0]=image[((y*4+12)*xsize)+80+(x*4)+2];
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temp_tile[0][1]=image[((y*4+13)*xsize)+80+(x*4)];
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temp_tile[1][1]=image[((y*4+13)*xsize)+80+(x*4)+2];
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temp_tile[0][2]=image[((y*4+14)*xsize)+80+(x*4)];
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temp_tile[1][2]=image[((y*4+14)*xsize)+80+(x*4)+2];
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temp_tile[0][3]=image[((y*4+15)*xsize)+80+(x*4)];
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temp_tile[1][3]=image[((y*4+15)*xsize)+80+(x*4)+2];
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/* find tile */
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found_tile=-1;
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/* if all black, assume transparent */
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if ((temp_tile[0][0]==0) &&
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(temp_tile[1][0]==0) &&
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(temp_tile[0][1]==0) &&
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(temp_tile[1][1]==0) &&
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(temp_tile[0][2]==0) &&
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(temp_tile[1][2]==0) &&
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(temp_tile[0][3]==0) &&
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(temp_tile[1][3]==0)) {
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found_tile=0;
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}
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else for(i=0;i<numtiles;i++) {
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if ((temp_tile[0][0]==tiles[i][0][0]) &&
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(temp_tile[1][0]==tiles[i][1][0]) &&
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(temp_tile[0][1]==tiles[i][0][1]) &&
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(temp_tile[1][1]==tiles[i][1][1]) &&
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(temp_tile[0][2]==tiles[i][0][2]) &&
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(temp_tile[1][2]==tiles[i][1][2]) &&
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(temp_tile[0][3]==tiles[i][0][3]) &&
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(temp_tile[1][3]==tiles[i][1][3])) {
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found_tile=i;
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break;
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}
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}
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tilemap[x][y]=found_tile;
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if (found_tile==-1) {
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printf("Error! Unknown tile at %d,%d\n",
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80+(x*4),12+(y*4));
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unknown_tiles++;
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}
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}
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}
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if (ascii_output) {
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fprintf(outfile,"tilemap:\n");
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for(j=0;j<80;j++) {
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fprintf(outfile,"\t.byte ");
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for(i=0;i<128;i++) {
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fprintf(outfile,"$%02x",tilemap[i][j]);
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if (i!=127) fprintf(outfile,",");
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}
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fprintf(outfile,"\n");
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}
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fprintf(outfile,"\n");
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}
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else {
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for(j=0;j<80;j++) {
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for(i=0;i<128;i++) {
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fputc(tilemap[i][j],outfile);
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}
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}
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}
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fclose(outfile);
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fprintf(stderr,"%d Unknown tiles\n",unknown_tiles);
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return 0;
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}
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