3dphotoshoot

annotate src/game.cc @ 22:d7fe157c402d

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author John Tsiombikas <nuclear@member.fsf.org>
date Sat, 13 Jun 2015 05:32:07 +0300
parents 4ca4e3c5a754
children 2712c5da2e00
rev   line source
nuclear@0 1 #include <stdio.h>
nuclear@0 2 #include <stdlib.h>
nuclear@0 3 #include <math.h>
nuclear@11 4 #include <assert.h>
nuclear@0 5 #include "opengl.h"
nuclear@0 6 #include "game.h"
nuclear@7 7 #include "camera.h"
nuclear@11 8 #include "sanegl.h"
nuclear@17 9 #include "texture.h"
nuclear@21 10 #include "shader.h"
nuclear@22 11 #include "text.h"
nuclear@7 12
nuclear@21 13 static void draw_quad(float hsz, float vsz);
nuclear@0 14
nuclear@22 15 int win_width, win_height;
nuclear@22 16
nuclear@9 17 static float win_aspect;
nuclear@9 18 static int video_width, video_height;
nuclear@9 19 static float video_aspect;
nuclear@17 20 static struct texture *test_tex;
nuclear@17 21
nuclear@21 22 static SdrProg *sdr_cam, *sdr_tex;
nuclear@0 23
nuclear@20 24 extern "C" int game_init(void)
nuclear@0 25 {
nuclear@17 26 //glEnable(GL_DEPTH_TEST);
nuclear@22 27 //glEnable(GL_CULL_FACE);
nuclear@0 28
nuclear@0 29 glClearColor(0.4, 0.4, 0.4, 1);
nuclear@8 30
nuclear@21 31 if(!(sdr_cam = get_sdrprog("sdr/vertex.glsl", "sdr/android_cam_preview.p.glsl"))) {
nuclear@10 32 return -1;
nuclear@10 33 }
nuclear@21 34 if(!(sdr_tex = get_sdrprog("sdr/vertex.glsl", "sdr/tex.p.glsl"))) {
nuclear@17 35 return -1;
nuclear@17 36 }
nuclear@17 37
nuclear@17 38 if(!(test_tex = get_texture("data/opengl.png"))) {
nuclear@17 39 return -1;
nuclear@17 40 }
nuclear@10 41
nuclear@8 42 cam_start_video();
nuclear@9 43 cam_video_size(&video_width, &video_height);
nuclear@9 44 if(video_height) {
nuclear@9 45 video_aspect = (float)video_width / (float)video_height;
nuclear@9 46 } else {
nuclear@9 47 video_aspect = 1.0;
nuclear@9 48 }
nuclear@9 49
nuclear@9 50 printf("started video %dx%d (aspect: %g)\n", video_width, video_height, video_aspect);
nuclear@0 51 return 0;
nuclear@0 52 }
nuclear@0 53
nuclear@20 54 extern "C" void game_shutdown(void)
nuclear@0 55 {
nuclear@8 56 cam_shutdown();
nuclear@21 57 delete sdr_cam;
nuclear@21 58 delete sdr_tex;
nuclear@0 59 }
nuclear@0 60
nuclear@20 61 extern "C" void game_display(unsigned long msec)
nuclear@0 62 {
nuclear@9 63 unsigned int tex;
nuclear@9 64 const float *tex_matrix;
nuclear@9 65 float xscale, yscale;
nuclear@9 66
nuclear@8 67 cam_update();
nuclear@9 68 tex = cam_texture();
nuclear@9 69 tex_matrix = cam_texture_matrix();
nuclear@7 70
nuclear@4 71 //float tsec = (float)msec / 1000.0f;
nuclear@0 72
nuclear@0 73 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
nuclear@0 74
nuclear@11 75 gl_matrix_mode(GL_MODELVIEW);
nuclear@11 76 gl_load_identity();
nuclear@11 77 gl_matrix_mode(GL_TEXTURE);
nuclear@11 78 gl_load_matrixf(tex_matrix);
nuclear@11 79
nuclear@21 80 sdr_cam->bind();
nuclear@10 81 glBindTexture(GL_TEXTURE_EXTERNAL_OES, tex);
nuclear@7 82
nuclear@9 83 if(video_aspect > win_aspect) {
nuclear@9 84 xscale = 1.0;
nuclear@9 85 yscale = 1.0 / video_aspect;
nuclear@9 86 } else {
nuclear@9 87 xscale = video_aspect;
nuclear@9 88 yscale = 1.0;
nuclear@9 89 }
nuclear@21 90 draw_quad(xscale, yscale);
nuclear@17 91
nuclear@17 92 gl_matrix_mode(GL_TEXTURE);
nuclear@17 93 gl_load_identity();
nuclear@17 94 gl_translatef(0, 1, 0);
nuclear@17 95 gl_scalef(1, -1, 1);
nuclear@17 96 gl_matrix_mode(GL_MODELVIEW);
nuclear@17 97 gl_load_identity();
nuclear@17 98 gl_scalef((float)test_tex->width / (float)test_tex->height, 1, 1);
nuclear@17 99
nuclear@21 100 sdr_tex->bind();
nuclear@17 101 glBindTexture(GL_TEXTURE_2D, test_tex->texid);
nuclear@17 102
nuclear@17 103 glEnable(GL_BLEND);
nuclear@17 104 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
nuclear@22 105 draw_quad(0.5, 0.5);
nuclear@22 106 glDisable(GL_BLEND);
nuclear@17 107
nuclear@22 108 gl_matrix_mode(GL_TEXTURE);
nuclear@22 109 gl_load_identity();
nuclear@17 110
nuclear@22 111
nuclear@22 112 // draw some text
nuclear@22 113 text_color(1, 1, 1, 1);
nuclear@22 114 for(int i=0; i<25; i++) {
nuclear@22 115 text_position(0, i);
nuclear@22 116 text_printf("%d%s line of text", i, i == 1 ? "st" : (i == 2 ? "nd" : (i == 3 ? "rd" : "th")));
nuclear@22 117 }
nuclear@7 118 }
nuclear@7 119
nuclear@21 120 static void draw_quad(float hsz, float vsz)
nuclear@7 121 {
nuclear@7 122 static const float varr[] = {-1, -1, 1, -1, 1, 1, -1, 1};
nuclear@9 123 static const float tcarr[] = {0, 0, 1, 0, 1, 1, 0, 1};
nuclear@7 124
nuclear@11 125 gl_matrix_mode(GL_MODELVIEW);
nuclear@11 126 gl_push_matrix();
nuclear@11 127 gl_scalef(hsz, vsz, 1);
nuclear@11 128
nuclear@21 129 if(SdrProg::active) {
nuclear@21 130 gl_apply_xform(SdrProg::active->get_globj());
nuclear@21 131 }
nuclear@7 132
nuclear@21 133 glEnableVertexAttribArray(SDR_ATTR_VERTEX);
nuclear@21 134 glEnableVertexAttribArray(SDR_ATTR_TEXCOORD);
nuclear@21 135 glVertexAttribPointer(SDR_ATTR_VERTEX, 2, GL_FLOAT, 0, 0, varr);
nuclear@21 136 glVertexAttribPointer(SDR_ATTR_TEXCOORD, 2, GL_FLOAT, 0, 0, tcarr);
nuclear@7 137
nuclear@8 138 glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
nuclear@7 139
nuclear@21 140 glDisableVertexAttribArray(SDR_ATTR_VERTEX);
nuclear@21 141 glDisableVertexAttribArray(SDR_ATTR_TEXCOORD);
nuclear@11 142
nuclear@11 143 gl_pop_matrix();
nuclear@0 144 }
nuclear@0 145
nuclear@20 146 extern "C" void game_reshape(int x, int y)
nuclear@0 147 {
nuclear@0 148 win_width = x;
nuclear@0 149 win_height = y;
nuclear@9 150 win_aspect = y ? (float)x / (float)y : 1.0;
nuclear@0 151 glViewport(0, 0, x, y);
nuclear@0 152
nuclear@11 153 gl_matrix_mode(GL_PROJECTION);
nuclear@11 154 gl_load_identity();
nuclear@11 155 gl_scalef((float)win_height / (float)win_width, 1, 1);
nuclear@0 156 }
nuclear@0 157
nuclear@20 158 extern "C" void game_keyboard(int key, int pressed)
nuclear@0 159 {
nuclear@0 160 if(!pressed) return;
nuclear@0 161
nuclear@0 162 switch(key) {
nuclear@0 163 case 27:
nuclear@0 164 exit(0);
nuclear@0 165
nuclear@0 166 default:
nuclear@0 167 break;
nuclear@0 168 }
nuclear@0 169 }
nuclear@0 170
nuclear@0 171 #define MAX_TOUCH_IDS 16
nuclear@0 172 static struct {
nuclear@0 173 int bnstate[8];
nuclear@0 174 int prev_x, prev_y;
nuclear@0 175 } mstate[MAX_TOUCH_IDS];
nuclear@0 176
nuclear@20 177 extern "C" void game_mouse_button(int id, int bn, int pressed, int x, int y)
nuclear@0 178 {
nuclear@0 179 if(id >= MAX_TOUCH_IDS) return;
nuclear@0 180
nuclear@0 181 mstate[id].prev_x = x;
nuclear@0 182 mstate[id].prev_y = y;
nuclear@0 183 mstate[id].bnstate[bn] = pressed;
nuclear@0 184 }
nuclear@0 185
nuclear@20 186 extern "C" void game_mouse_motion(int id, int x, int y)
nuclear@0 187 {
nuclear@0 188 /*
nuclear@0 189 int dx, dy, cx, cy;
nuclear@0 190
nuclear@0 191 if(id >= MAX_TOUCH_IDS) return;
nuclear@0 192
nuclear@0 193 cx = win_width / 2;
nuclear@0 194 cy = win_height / 2;
nuclear@0 195
nuclear@0 196 dx = x - mstate[id].prev_x;
nuclear@0 197 dy = y - mstate[id].prev_y;
nuclear@0 198 mstate[id].prev_x = x;
nuclear@0 199 mstate[id].prev_y = y;
nuclear@0 200
nuclear@0 201 if(!dx && !dy) return;
nuclear@0 202
nuclear@0 203 if(mouselook || mstate[id].bnstate[0]) {
nuclear@0 204 player_turn(&player, dx * 0.5, dy * 0.5);
nuclear@0 205 }
nuclear@0 206 if(mstate[id].bnstate[2]) {
nuclear@0 207 dbg_cam_dist += 0.1 * dy;
nuclear@0 208 if(dbg_cam_dist < 0.0) dbg_cam_dist = 0.0;
nuclear@0 209 }
nuclear@0 210
nuclear@0 211 if(mouselook) {
nuclear@0 212 warping_mouse = 1;
nuclear@0 213 set_mouse_pos(cx, cy);
nuclear@0 214 mstate[id].prev_x = cx;
nuclear@0 215 mstate[id].prev_y = cy;
nuclear@0 216 }
nuclear@0 217 */
nuclear@0 218 }
nuclear@0 219