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annotate src/game.cc @ 18:986c0b76513f

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shadows, not completed
author John Tsiombikas <nuclear@member.fsf.org>
date Mon, 29 Jun 2015 01:29:36 +0300
parents 16a420432aa3
children 37dead56f01e
rev   line source
nuclear@0 1 #include <stdio.h>
nuclear@18 2 #include <assert.h>
nuclear@16 3 #include "opengl.h"
nuclear@0 4 #include "game.h"
nuclear@1 5 #include "board.h"
nuclear@14 6 #include "scenery.h"
nuclear@15 7 #include "sdr.h"
nuclear@18 8 #include "shadow.h"
nuclear@18 9 #include "opt.h"
nuclear@0 10
nuclear@18 11 static void draw_scene();
nuclear@0 12 static void draw_backdrop();
nuclear@0 13
nuclear@0 14 int win_width, win_height;
nuclear@17 15 unsigned long cur_time;
nuclear@15 16 unsigned int sdr_phong, sdr_phong_notex;
nuclear@18 17 unsigned int sdr_shadow, sdr_shadow_notex;
nuclear@14 18 bool wireframe;
nuclear@0 19
nuclear@1 20 static Board board;
nuclear@1 21
nuclear@8 22 static float cam_theta, cam_phi = 45, cam_dist = 3;
nuclear@0 23 static bool bnstate[8];
nuclear@0 24 static int prev_x, prev_y;
nuclear@0 25
nuclear@15 26 static bool dbg_busyloop;
nuclear@0 27
nuclear@0 28 bool game_init()
nuclear@0 29 {
nuclear@16 30 if(init_opengl() == -1) {
nuclear@16 31 return false;
nuclear@16 32 }
nuclear@16 33
nuclear@0 34 glEnable(GL_DEPTH_TEST);
nuclear@0 35 glEnable(GL_CULL_FACE);
nuclear@11 36 glEnable(GL_NORMALIZE);
nuclear@0 37 glEnable(GL_LIGHTING);
nuclear@0 38 glEnable(GL_LIGHT0);
nuclear@0 39
nuclear@16 40 if(glcaps.sep_spec) {
nuclear@16 41 glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR);
nuclear@16 42 }
nuclear@16 43
nuclear@16 44 if(glcaps.fsaa) {
nuclear@5 45 glEnable(GL_MULTISAMPLE);
nuclear@5 46 }
nuclear@5 47
nuclear@16 48 if(glcaps.shaders) {
nuclear@16 49 Mesh::use_custom_sdr_attr = false;
nuclear@16 50 if(!(sdr_phong = create_program_load("sdr/phong.v.glsl", "sdr/phong.p.glsl"))) {
nuclear@16 51 return false;
nuclear@16 52 }
nuclear@16 53 if(!(sdr_phong_notex = create_program_load("sdr/phong.v.glsl", "sdr/phong-notex.p.glsl"))) {
nuclear@16 54 return false;
nuclear@16 55 }
nuclear@18 56
nuclear@18 57 if(glcaps.fbo) {
nuclear@18 58 init_shadow(512);
nuclear@18 59
nuclear@18 60 if(!(sdr_shadow = create_program_load("sdr/shadow.v.glsl", "sdr/shadow.p.glsl"))) {
nuclear@18 61 return false;
nuclear@18 62 }
nuclear@18 63 set_uniform_int(sdr_shadow, "tex", 0);
nuclear@18 64 set_uniform_int(sdr_shadow, "shadowmap", 1);
nuclear@18 65
nuclear@18 66 if(!(sdr_shadow_notex = create_program_load("sdr/shadow.v.glsl", "sdr/shadow-notex.p.glsl"))) {
nuclear@18 67 return false;
nuclear@18 68 }
nuclear@18 69 }
nuclear@15 70 }
nuclear@15 71
nuclear@1 72 if(!board.init()) {
nuclear@1 73 return false;
nuclear@1 74 }
nuclear@17 75 board.setup();
nuclear@1 76
nuclear@14 77 if(!init_scenery()) {
nuclear@14 78 return false;
nuclear@14 79 }
nuclear@14 80
nuclear@18 81 assert(glGetError() == GL_NO_ERROR);
nuclear@0 82 return true;
nuclear@0 83 }
nuclear@0 84
nuclear@0 85 void game_cleanup()
nuclear@0 86 {
nuclear@1 87 board.destroy();
nuclear@14 88 destroy_scenery();
nuclear@18 89 destroy_shadow();
nuclear@0 90 }
nuclear@0 91
nuclear@0 92 void game_update(unsigned long time_msec)
nuclear@0 93 {
nuclear@17 94 cur_time = time_msec;
nuclear@0 95 }
nuclear@0 96
nuclear@0 97 void game_display()
nuclear@0 98 {
nuclear@0 99 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
nuclear@0 100
nuclear@0 101 glMatrixMode(GL_MODELVIEW);
nuclear@0 102 glLoadIdentity();
nuclear@0 103 glTranslatef(0, 0, -cam_dist);
nuclear@0 104 glRotatef(cam_phi, 1, 0, 0);
nuclear@0 105 glRotatef(cam_theta, 0, 1, 0);
nuclear@0 106
nuclear@15 107 float ldir[] = {-10, 20, 10, 1};
nuclear@6 108 glLightfv(GL_LIGHT0, GL_POSITION, ldir);
nuclear@6 109
nuclear@18 110 if(opt.shadows && sdr_shadow) {
nuclear@18 111 printf("shadow pass\n");
nuclear@18 112
nuclear@18 113 begin_shadow_pass(Vector3(-10, 20, 10), Vector3(0, 0, 0), 25);
nuclear@18 114 draw_scene();
nuclear@18 115 end_shadow_pass();
nuclear@18 116
nuclear@18 117 glActiveTexture(GL_TEXTURE1);
nuclear@18 118 glBindTexture(GL_TEXTURE_2D, get_shadow_tex());
nuclear@18 119
nuclear@18 120 glMatrixMode(GL_TEXTURE);
nuclear@18 121 Matrix4x4 shadow_matrix = get_shadow_matrix();
nuclear@18 122 glLoadMatrixf(shadow_matrix[0]);
nuclear@18 123
nuclear@18 124 glActiveTexture(GL_TEXTURE0);
nuclear@18 125 glMatrixMode(GL_MODELVIEW);
nuclear@18 126
nuclear@18 127 draw_scene();
nuclear@18 128
nuclear@18 129 glActiveTexture(GL_TEXTURE1);
nuclear@18 130 glBindTexture(GL_TEXTURE_2D, 0);
nuclear@18 131 glActiveTexture(GL_TEXTURE0);
nuclear@18 132 } else {
nuclear@18 133 draw_scene();
nuclear@18 134 }
nuclear@15 135
nuclear@15 136 if(dbg_busyloop) {
nuclear@15 137 redisplay();
nuclear@15 138 }
nuclear@0 139 }
nuclear@0 140
nuclear@18 141 static void draw_scene()
nuclear@18 142 {
nuclear@18 143 draw_backdrop();
nuclear@18 144 draw_scenery();
nuclear@18 145 board.draw();
nuclear@18 146 }
nuclear@18 147
nuclear@0 148 static void draw_backdrop()
nuclear@0 149 {
nuclear@0 150 glPushAttrib(GL_ENABLE_BIT);
nuclear@0 151 glDisable(GL_LIGHTING);
nuclear@0 152 glDisable(GL_DEPTH_TEST);
nuclear@0 153
nuclear@0 154 glMatrixMode(GL_PROJECTION);
nuclear@0 155 glPushMatrix();
nuclear@0 156 glLoadIdentity();
nuclear@0 157 glMatrixMode(GL_MODELVIEW);
nuclear@0 158 glPushMatrix();
nuclear@0 159 glLoadIdentity();
nuclear@0 160
nuclear@0 161 glBegin(GL_QUADS);
nuclear@0 162 glColor3f(0.9, 0.8, 0.6);
nuclear@0 163 glVertex2f(-1, -1);
nuclear@0 164 glVertex2f(1, -1);
nuclear@0 165 glColor3f(0.4, 0.5, 0.8);
nuclear@0 166 glVertex2f(1, 1);
nuclear@0 167 glVertex2f(-1, 1);
nuclear@0 168 glEnd();
nuclear@0 169
nuclear@0 170 glMatrixMode(GL_PROJECTION);
nuclear@0 171 glPopMatrix();
nuclear@0 172 glMatrixMode(GL_MODELVIEW);
nuclear@0 173 glPopMatrix();
nuclear@0 174
nuclear@0 175 glPopAttrib();
nuclear@0 176 }
nuclear@0 177
nuclear@0 178 void game_reshape(int x, int y)
nuclear@0 179 {
nuclear@0 180 glMatrixMode(GL_PROJECTION);
nuclear@0 181 glLoadIdentity();
nuclear@5 182 gluPerspective(45, (float)x / (float)y, 0.2, 200.0);
nuclear@0 183
nuclear@0 184 glViewport(0, 0, x, y);
nuclear@0 185 }
nuclear@0 186
nuclear@0 187 void game_keyboard(int bn, bool press)
nuclear@0 188 {
nuclear@0 189 if(press) {
nuclear@0 190 switch(bn) {
nuclear@0 191 case 27:
nuclear@0 192 quit();
nuclear@14 193
nuclear@14 194 case 'w':
nuclear@14 195 wireframe = !wireframe;
nuclear@14 196 redisplay();
nuclear@14 197 break;
nuclear@15 198
nuclear@15 199 case 'd':
nuclear@15 200 dbg_busyloop = !dbg_busyloop;
nuclear@15 201 redisplay();
nuclear@15 202 break;
nuclear@18 203
nuclear@18 204 case 's':
nuclear@18 205 opt.shadows = !opt.shadows;
nuclear@18 206 redisplay();
nuclear@18 207 break;
nuclear@0 208 }
nuclear@0 209 }
nuclear@0 210 }
nuclear@0 211
nuclear@0 212 void game_mbutton(int bn, bool press, int x, int y)
nuclear@0 213 {
nuclear@0 214 bnstate[bn] = press;
nuclear@0 215 prev_x = x;
nuclear@0 216 prev_y = y;
nuclear@0 217 }
nuclear@0 218
nuclear@0 219 void game_mmotion(int x, int y)
nuclear@0 220 {
nuclear@0 221 int dx = x - prev_x;
nuclear@0 222 int dy = y - prev_y;
nuclear@0 223 prev_x = x;
nuclear@0 224 prev_y = y;
nuclear@0 225
nuclear@0 226 if(bnstate[0]) {
nuclear@0 227 cam_theta += dx * 0.5;
nuclear@0 228 cam_phi += dy * 0.5;
nuclear@0 229
nuclear@0 230 if(cam_phi < -90) cam_phi = -90;
nuclear@0 231 if(cam_phi > 90) cam_phi = 90;
nuclear@0 232
nuclear@0 233 redisplay();
nuclear@0 234 }
nuclear@0 235 if(bnstate[2]) {
nuclear@0 236 cam_dist += dy * 0.1;
nuclear@0 237 if(cam_dist < 0.0) cam_dist = 0.0;
nuclear@0 238
nuclear@0 239 redisplay();
nuclear@0 240 }
nuclear@0 241 }