dungeon_crawler

annotate prototype/src/level.cc @ 7:8fb37db44fd8

find changesets by author, revision, files, or words in the commit message
first person motion
author John Tsiombikas <nuclear@member.fsf.org>
date Fri, 17 Aug 2012 14:29:37 +0300
parents 252a00508411
children 22562582c82d
rev   line source
nuclear@1 1 #include <stdio.h>
nuclear@1 2 #include <string.h>
nuclear@5 3 #include <errno.h>
nuclear@1 4 #include "opengl.h"
nuclear@1 5 #include "level.h"
nuclear@1 6 #include "tile.h"
nuclear@5 7 #include "tileset.h"
nuclear@1 8
nuclear@1 9 Level::Level()
nuclear@1 10 {
nuclear@1 11 cell_size = 1.0;
nuclear@1 12
nuclear@1 13 cells = 0;
nuclear@1 14 xsz = ysz = 0;
nuclear@1 15 }
nuclear@1 16
nuclear@1 17 Level::~Level()
nuclear@1 18 {
nuclear@1 19 delete [] cells;
nuclear@1 20 }
nuclear@1 21
nuclear@1 22 bool Level::load(const char *fname)
nuclear@1 23 {
nuclear@5 24 if(!fname) {
nuclear@5 25 return false;
nuclear@5 26 }
nuclear@5 27
nuclear@5 28 TileSet *tileset = get_active_tileset();
nuclear@5 29 if(!tileset) {
nuclear@5 30 fprintf(stderr, "level loading failed: no active tileset\n");
nuclear@5 31 return false;
nuclear@5 32 }
nuclear@5 33 Tile *deftile = tileset->get_tile("default");
nuclear@5 34 if(!deftile) {
nuclear@5 35 fprintf(stderr, "level loading failed: active tileset has no default tile\n");
nuclear@5 36 return false;
nuclear@5 37 }
nuclear@5 38
nuclear@5 39 FILE *fp = fopen(fname, "r");
nuclear@5 40 if(!fp) {
nuclear@5 41 fprintf(stderr, "failed to open level: %s: %s\n", fname, strerror(errno));
nuclear@5 42 return false;
nuclear@5 43 }
nuclear@5 44
nuclear@5 45 char buf[512];
nuclear@5 46 fgets(buf, sizeof buf, fp);
nuclear@5 47 if(sscanf(buf, "SIZE %dx%d", &xsz, &ysz) != 2) {
nuclear@5 48 fprintf(stderr, "invalid or corrupt level file: %s\n", fname);
nuclear@5 49 fclose(fp);
nuclear@5 50 return false;
nuclear@5 51 }
nuclear@5 52 printf("level size: %dx%d\n", xsz, ysz);
nuclear@1 53
nuclear@1 54 cells = new GridCell*[xsz * ysz];
nuclear@1 55 memset(cells, 0, xsz * ysz * sizeof *cells);
nuclear@1 56
nuclear@5 57 int y = 0;
nuclear@5 58 GridCell **grid_row = cells;
nuclear@5 59
nuclear@5 60 while(fgets(buf, sizeof buf, fp)) {
nuclear@5 61 for(int i=0; i<xsz; i++) {
nuclear@5 62 if(!buf[i] || buf[i] == '\r' || buf[i] == '\n') {
nuclear@5 63 grid_row += xsz - i;
nuclear@5 64 break;
nuclear@5 65 }
nuclear@5 66
nuclear@5 67 if(isalpha(buf[i]) || buf[i] == ' ') {
nuclear@5 68 *grid_row = new GridCell(deftile);
nuclear@5 69 }
nuclear@5 70 grid_row++;
nuclear@5 71 }
nuclear@5 72
nuclear@5 73 if(++y >= ysz) {
nuclear@5 74 break;
nuclear@5 75 }
nuclear@5 76 }
nuclear@5 77 fclose(fp);
nuclear@1 78
nuclear@1 79 return true;
nuclear@1 80 }
nuclear@1 81
nuclear@1 82 bool Level::save(const char *fname) const
nuclear@1 83 {
nuclear@1 84 return false;
nuclear@1 85 }
nuclear@1 86
nuclear@1 87 const GridCell *Level::get_cell(int x, int y) const
nuclear@1 88 {
nuclear@1 89 if(x < 0 || x >= xsz || y < 0 || y >= ysz) {
nuclear@1 90 return 0;
nuclear@1 91 }
nuclear@1 92 return cells[y * xsz + x];
nuclear@1 93 }
nuclear@1 94
nuclear@1 95 Vector3 Level::get_cell_pos(int x, int y) const
nuclear@1 96 {
nuclear@1 97 float posx = (x - xsz / 2) * cell_size;
nuclear@1 98 float posy = (y - ysz / 2) * cell_size;
nuclear@1 99 return Vector3(posx, 0, posy);
nuclear@1 100 }
nuclear@1 101
nuclear@1 102 void Level::draw() const
nuclear@1 103 {
nuclear@1 104 glMatrixMode(GL_MODELVIEW);
nuclear@1 105
nuclear@1 106 draw_grid();
nuclear@1 107
nuclear@1 108 for(int i=0; i<ysz; i++) {
nuclear@1 109 for(int j=0; j<xsz; j++) {
nuclear@1 110 const GridCell *cell = get_cell(j, i);
nuclear@1 111 if(cell) {
nuclear@1 112 Vector3 pos = get_cell_pos(j, i);
nuclear@1 113 glPushMatrix();
nuclear@1 114 glTranslatef(pos.x, pos.y, pos.z);
nuclear@1 115 glScalef(cell_size, cell_size, cell_size);
nuclear@5 116
nuclear@7 117 unsigned int dmask = TILE_ALL;
nuclear@7 118 if(i > 0 && get_cell(j, i - 1)) {
nuclear@7 119 dmask &= ~TILE_NORTH;
nuclear@5 120 }
nuclear@7 121 if(i < ysz - 1 && get_cell(j, i + 1)) {
nuclear@7 122 dmask &= ~TILE_SOUTH;
nuclear@5 123 }
nuclear@7 124 if(j > 0 && get_cell(j - 1, i)) {
nuclear@7 125 dmask &= ~TILE_WEST;
nuclear@5 126 }
nuclear@7 127 if(j < xsz - 1 && get_cell(j + 1, i)) {
nuclear@7 128 dmask &= ~TILE_EAST;
nuclear@5 129 }
nuclear@5 130
nuclear@5 131 cell->draw(dmask);
nuclear@1 132 glPopMatrix();
nuclear@1 133 }
nuclear@1 134 }
nuclear@1 135 }
nuclear@1 136 }
nuclear@1 137
nuclear@1 138 void Level::draw_grid() const
nuclear@1 139 {
nuclear@1 140 float xlen = xsz * cell_size;
nuclear@1 141 float ylen = ysz * cell_size;
nuclear@1 142
nuclear@1 143 glPushAttrib(GL_ENABLE_BIT);
nuclear@1 144 glDisable(GL_LIGHTING);
nuclear@1 145
nuclear@1 146 glBegin(GL_LINES);
nuclear@1 147 glColor3f(0.4, 0.4, 0.4);
nuclear@1 148
nuclear@1 149 float y = -ylen / 2.0 - cell_size / 2.0;
nuclear@1 150 for(int i=0; i<ysz; i++) {
nuclear@1 151 glVertex3f(-xlen / 2.0, 0, y);
nuclear@1 152 glVertex3f(xlen / 2.0, 0, y);
nuclear@1 153 y += cell_size;
nuclear@1 154 }
nuclear@1 155
nuclear@1 156 float x = -xlen / 2.0 - cell_size / 2.0;
nuclear@1 157 for(int i=0; i<xsz; i++) {
nuclear@1 158 glVertex3f(x, 0, -ylen / 2.0);
nuclear@1 159 glVertex3f(x, 0, ylen / 2.0);
nuclear@1 160 x += cell_size;
nuclear@1 161 }
nuclear@1 162 glEnd();
nuclear@1 163
nuclear@1 164 glPopAttrib();
nuclear@1 165 }
nuclear@1 166
nuclear@5 167
nuclear@5 168 GridCell::GridCell(const Tile *tile)
nuclear@5 169 {
nuclear@5 170 if(tile) {
nuclear@5 171 tiles.push_back(tile);
nuclear@5 172 }
nuclear@5 173 }
nuclear@5 174
nuclear@1 175 void GridCell::add_tile(const Tile *tile)
nuclear@1 176 {
nuclear@1 177 tiles.push_back(tile);
nuclear@1 178 }
nuclear@1 179
nuclear@5 180 void GridCell::draw(unsigned int draw_mask) const
nuclear@1 181 {
nuclear@1 182 for(size_t i=0; i<tiles.size(); i++) {
nuclear@5 183 tiles[i]->draw(draw_mask);
nuclear@1 184 }
nuclear@1 185 }