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1 #include <stdio.h>
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2 #include <string.h>
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3 #include "opengl.h"
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4 #include "level.h"
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5 #include "tile.h"
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6
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7 Level::Level()
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8 {
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9 cell_size = 1.0;
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10
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11 cells = 0;
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12 xsz = ysz = 0;
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13 }
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14
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15 Level::~Level()
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16 {
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17 delete [] cells;
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18 }
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19
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20 bool Level::load(const char *fname)
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21 {
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22 xsz = ysz = 64;
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23
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24 cells = new GridCell*[xsz * ysz];
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25 memset(cells, 0, xsz * ysz * sizeof *cells);
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26
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27 GridCell *g = new GridCell;
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28 g->add_tile(new Tile);
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29 cells[ysz / 2 * xsz + xsz / 2] = g;
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30
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31 return true;
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32 }
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33
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34 bool Level::save(const char *fname) const
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35 {
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36 return false;
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37 }
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38
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39 const GridCell *Level::get_cell(int x, int y) const
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40 {
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41 if(x < 0 || x >= xsz || y < 0 || y >= ysz) {
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42 return 0;
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43 }
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44 return cells[y * xsz + x];
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45 }
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46
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47 Vector3 Level::get_cell_pos(int x, int y) const
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48 {
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49 float posx = (x - xsz / 2) * cell_size;
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50 float posy = (y - ysz / 2) * cell_size;
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51 return Vector3(posx, 0, posy);
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52 }
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53
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54 void Level::draw() const
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55 {
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56 glMatrixMode(GL_MODELVIEW);
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57
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58 draw_grid();
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59
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60 for(int i=0; i<ysz; i++) {
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61 for(int j=0; j<xsz; j++) {
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62 const GridCell *cell = get_cell(j, i);
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63 if(cell) {
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64 Vector3 pos = get_cell_pos(j, i);
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65 glPushMatrix();
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66 glTranslatef(pos.x, pos.y, pos.z);
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67 glScalef(cell_size, cell_size, cell_size);
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68 cell->draw();
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69 glPopMatrix();
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70 }
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71 }
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72 }
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73 }
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74
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75 void Level::draw_grid() const
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76 {
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77 float xlen = xsz * cell_size;
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78 float ylen = ysz * cell_size;
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79
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80 glPushAttrib(GL_ENABLE_BIT);
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81 glDisable(GL_LIGHTING);
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82
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83 glBegin(GL_LINES);
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84 glColor3f(0.4, 0.4, 0.4);
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85
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86 float y = -ylen / 2.0 - cell_size / 2.0;
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87 for(int i=0; i<ysz; i++) {
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88 glVertex3f(-xlen / 2.0, 0, y);
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89 glVertex3f(xlen / 2.0, 0, y);
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90 y += cell_size;
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91 }
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92
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93 float x = -xlen / 2.0 - cell_size / 2.0;
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94 for(int i=0; i<xsz; i++) {
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95 glVertex3f(x, 0, -ylen / 2.0);
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96 glVertex3f(x, 0, ylen / 2.0);
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97 x += cell_size;
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98 }
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99 glEnd();
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100
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101 glPopAttrib();
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102 }
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103
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104 void GridCell::add_tile(const Tile *tile)
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105 {
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106 tiles.push_back(tile);
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107 }
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108
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109 void GridCell::draw() const
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110 {
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111 for(size_t i=0; i<tiles.size(); i++) {
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112 tiles[i]->draw();
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113 }
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114 }
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