opt = -O0
dbg = -g
-incpath = -Isrc -Isrc/machine -I/usr/local/include
+incpath = -Isrc -Isrc/machine -I/usr/local/include `pkg-config --cflags sdl2`
libpath = -L/usr/local/lib
warn = -pedantic -Wall
CFLAGS = $(warn) $(opt) $(dbg) $(incpath)
CXXFLAGS = -std=c++11 $(warn) $(opt) $(dbg) $(incpath)
-LDFLAGS = $(libpath) $(libgl_$(sys)) -lm -lgmath -lvmath -limago -lresman -lpthread -lassimp -ltreestore
+LDFLAGS = $(libpath) $(libgl_$(sys)) -lm -lgmath -lvmath -limago -lresman \
+ -lpthread -lassimp -ltreestore -ldrawtext `pkg-config --libs sdl2`
sys = $(shell uname -s)
-libgl_Linux = -lGL -lGLU -lglut -lGLEW
-libgl_Darwin = -framework OpenGL -framework GLUT -lGLEW
+libgl_Linux = -lGL -lGLU -lGLEW
+libgl_Darwin = -framework OpenGL -lGLEW
$(bin): .clang_complete $(obj)
$(CXX) -o $@ $(obj) $(LDFLAGS)
#include "scene.h"
#include "metascene.h"
#include "datamap.h"
+#include "ui.h"
static void draw_scene();
long time_msec;
int win_width, win_height;
+float win_aspect;
bool opt_gear_wireframe;
-bool show_walk_mesh;
static float cam_dist = 0.0;
static float cam_theta, cam_phi = 20;
static Vec3 cam_pos;
+static float floor_y; // last floor height
+static float user_eye_height = 165;
+
+static float walk_speed = 400.0f;
+static bool show_walk_mesh, noclip = false;
+
static int prev_mx, prev_my;
static bool bnstate[8];
static bool keystate[256];
return false;
}
+ // set initial cam_pos above the center of the walk mesh (if any)
+ if(scn->walk_mesh) {
+ Vec3 bcent;
+ float brad;
+ scn->walk_mesh->get_bsphere(&bcent, &brad);
+
+ floor_y = bcent.y;
+ cam_pos = bcent + Vec3(0, user_eye_height, 0);
+ }
+
if(!(sdr = create_program_load("sdr/test.v.glsl", "sdr/test.p.glsl"))) {
fprintf(stderr, "failed to load test shaders\n");
return false;
texman.clear();
}
+static bool constrain_walk_mesh(const Vec3 &v, Vec3 *newv)
+{
+ Mesh *wm = scn->walk_mesh;
+ if(!wm) {
+ *newv = v;
+ return true;
+ }
+
+ Ray downray = Ray(v, Vec3(0, -1, 0));
+ HitPoint hit;
+ if(scn->walk_mesh->intersect(downray, &hit)) {
+ *newv = hit.pos;
+ newv->y += user_eye_height;
+ return true;
+ }
+ return false;
+}
+
static void update(float dt)
{
texman.update();
scn->update(dt);
- float walk_speed = 2000.0 * dt;
+ float speed = walk_speed * dt;
Vec3 dir;
if(keystate[(int)'w']) {
- dir.z -= walk_speed;
+ dir.z -= speed;
}
if(keystate[(int)'s']) {
- dir.z += walk_speed;
+ dir.z += speed;
}
if(keystate[(int)'d']) {
- dir.x += walk_speed;
+ dir.x += speed;
}
if(keystate[(int)'a']) {
- dir.x -= walk_speed;
+ dir.x -= speed;
}
if(keystate[(int)'q']) {
- cam_pos.y += walk_speed;
+ cam_pos.y += speed;
}
if(keystate[(int)'z']) {
- cam_pos.y -= walk_speed;
+ cam_pos.y -= speed;
}
float theta = M_PI * cam_theta / 180.0f;
- cam_pos.x += cos(theta) * dir.x - sin(theta) * dir.z;
- cam_pos.z += sin(theta) * dir.x + cos(theta) * dir.z;
+ Vec3 newpos;
+ newpos.x = cam_pos.x + cos(theta) * dir.x - sin(theta) * dir.z;
+ newpos.y = cam_pos.y;
+ newpos.z = cam_pos.z + sin(theta) * dir.x + cos(theta) * dir.z;
+
+ if(noclip) {
+ cam_pos = newpos;
+ } else {
+ if(!constrain_walk_mesh(newpos, &cam_pos)) {
+ float dtheta = M_PI / 32.0;
+ float theta = dtheta;
+ Vec2 dir2d = newpos.xz() - cam_pos.xz();
+
+ for(int i=0; i<16; i++) {
+ Vec2 dvec = rotate(dir2d, theta);
+ Vec3 pos = cam_pos + Vec3(dvec.x, 0, dvec.y);
+ if(constrain_walk_mesh(pos, &cam_pos)) {
+ break;
+ }
+ dvec = rotate(dir2d, -theta);
+ pos = cam_pos + Vec3(dvec.x, 0, dvec.y);
+ if(constrain_walk_mesh(pos, &cam_pos)) {
+ break;
+ }
+ theta += dtheta;
+ }
+ }
+ floor_y = cam_pos.y - user_eye_height;
+ }
}
static void set_light(int idx, const Vec3 &pos, const Vec3 &color)
update(dt);
draw_scene();
+ draw_ui();
app_swap_buffers();
assert(glGetError() == GL_NO_ERROR);
static void draw_scene()
{
- /*
- glBegin(GL_QUADS);
- glNormal3f(0, 1, 0);
- glVertex3f(-30, -10, 30);
- glVertex3f(30, -10, 30);
- glVertex3f(30, -10, -30);
- glVertex3f(-30, -10, -30);
- glEnd();
- */
-
glUseProgram(sdr);
scn->draw();
glUseProgram(0);
glEnable(GL_BLEND);
glBlendFunc(GL_ONE, GL_ONE);
glDisable(GL_LIGHTING);
+ glEnable(GL_POLYGON_OFFSET_FILL);
- glColor3f(0.5, 0.4, 0.05);
+ glPolygonOffset(-1, 1);
+ glDepthMask(0);
+
+ glColor3f(0.3, 0.08, 0.01);
scn->walk_mesh->draw();
+ glDepthMask(1);
+
glPopAttrib();
}
}
void app_keyboard(int key, bool pressed)
{
+ unsigned int mod = app_get_modifiers();
+
if(pressed) {
- printf("key: %d (mod: %x)\n", key, app_get_modifiers());
switch(key) {
case 27:
app_quit();
break;
case 'w':
- if(app_get_modifiers() & MOD_CTRL) {
+ if(mod & MOD_CTRL) {
show_walk_mesh = !show_walk_mesh;
+ show_message("walk mesh: %s", show_walk_mesh ? "on" : "off");
}
break;
+
+ case 'c':
+ if(mod & MOD_CTRL) {
+ noclip = !noclip;
+ show_message(noclip ? "no clip" : "clip");
+ }
+ break;
+
+ case '=':
+ walk_speed *= 1.25;
+ show_message("walk speed: %g", walk_speed);
+ break;
+
+ case '-':
+ walk_speed *= 0.75;
+ show_message("walk speed: %g", walk_speed);
+ break;
}
}
- keystate[key] = pressed;
+ if(key < 256 && !(mod & (MOD_CTRL | MOD_ALT))) {
+ keystate[key] = pressed;
+ }
}
void app_mouse_button(int bn, bool pressed, int x, int y)
if(!dx && !dy) return;
+ app_mouse_delta(dx, dy);
+}
+
+void app_mouse_delta(int dx, int dy)
+{
if(bnstate[0]) {
cam_theta += dx * 0.5;
cam_phi += dy * 0.5;
extern long time_msec;
extern int win_width, win_height;
+extern float win_aspect;
extern bool opt_gear_wireframe;
enum {
void app_keyboard(int key, bool pressed);
void app_mouse_button(int bn, bool pressed, int x, int y);
void app_mouse_motion(int x, int y);
+void app_mouse_delta(int dx, int dy);
// the following functions are implemented by the backend (main.cc)
void app_quit();
#include <stdlib.h>
#include <assert.h>
#include <GL/glew.h>
-#ifdef __APPLE__
-#include <GLUT/glut.h>
-#else
-#include <GL/glut.h>
-#endif
+#include <SDL2/SDL.h>
#include "app.h"
static bool init();
-static void display();
-static void idle();
-static void reshape(int x, int y);
-static void key_press(unsigned char key, int x, int y);
-static void key_release(unsigned char key, int x, int y);
-static void mouse(int bn, int st, int x, int y);
+static void process_event(SDL_Event *ev);
static void proc_modkeys();
+static SDL_Window *win;
+static SDL_GLContext ctx;
+static bool fullscreen, mouse_grabbed;
+static bool quit;
+
static unsigned int start_time;
static unsigned int modkeys;
+static int scale_factor = 1;
+
int main(int argc, char **argv)
{
- glutInitWindowSize(1024, 768);
- glutInit(&argc, argv);
- glutInitDisplayMode(GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE | GLUT_MULTISAMPLE);
- glutCreateWindow("demo");
-
- glutDisplayFunc(display);
- glutIdleFunc(idle);
- glutReshapeFunc(reshape);
- glutKeyboardFunc(key_press);
- glutKeyboardUpFunc(key_release);
- glutMouseFunc(mouse);
- glutMotionFunc(app_mouse_motion);
- glutPassiveMotionFunc(app_mouse_motion);
+ if(SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER) != 0) {
+ fprintf(stderr, "failed to initialize SDL\n");
+ return 1;
+ }
+
+ SDL_GL_SetAttribute(SDL_GL_MULTISAMPLEBUFFERS, 1);
+ SDL_GL_SetAttribute(SDL_GL_MULTISAMPLESAMPLES, 8);
+ SDL_GL_SetAttribute(SDL_GL_FRAMEBUFFER_SRGB_CAPABLE, 1);
+
+ int defpos = SDL_WINDOWPOS_UNDEFINED;
+ unsigned int sdlflags = SDL_WINDOW_OPENGL | SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI;
+
+ if(!(win = SDL_CreateWindow("demo", defpos, defpos, 1024, 768, sdlflags))) {
+ // try again without sRGB capability
+ SDL_GL_SetAttribute(SDL_GL_FRAMEBUFFER_SRGB_CAPABLE, 0);
+ if(!(win = SDL_CreateWindow("demo", defpos, defpos, 1024, 768, sdlflags))) {
+ fprintf(stderr, "failed to create window\n");
+ SDL_Quit();
+ return 1;
+ }
+ }
+
+ if(!(ctx = SDL_GL_CreateContext(win))) {
+ fprintf(stderr, "failed to create OpenGL context\n");
+ SDL_Quit();
+ return 1;
+ }
+ SDL_GL_GetDrawableSize(win, &win_width, &win_height);
+ win_aspect = (float)win_width / (float)win_height;
if(!init()) {
+ SDL_Quit();
return 1;
}
- atexit(app_cleanup);
+ app_reshape(win_width, win_height);
- glutMainLoop();
+ while(!quit) {
+ SDL_Event ev;
+
+ time_msec = SDL_GetTicks() - start_time;
+ while(SDL_PollEvent(&ev)) {
+ process_event(&ev);
+ if(quit) goto break_evloop;
+ }
+
+ app_display();
+ }
+break_evloop:
+
+ app_cleanup();
+ SDL_Quit();
return 0;
}
void app_swap_buffers()
{
- glutSwapBuffers();
+ SDL_GL_SwapWindow(win);
}
void app_quit()
{
- exit(0);
+ quit = true;
}
unsigned int app_get_modifiers()
return false;
}
- start_time = glutGet(GLUT_ELAPSED_TIME);
+ start_time = SDL_GetTicks();
return true;
}
-static void display()
-{
- time_msec = glutGet(GLUT_ELAPSED_TIME) - start_time;
- app_display();
-}
-
-static void idle()
-{
- glutPostRedisplay();
-}
-
-static void reshape(int x, int y)
-{
- win_width = x;
- win_height = y;
-
- app_reshape(x, y);
-}
-
-static void key_press(unsigned char key, int x, int y)
-{
- proc_modkeys();
- app_keyboard(key, true);
-}
-
-static void key_release(unsigned char key, int x, int y)
-{
- proc_modkeys();
- app_keyboard(key, false);
-}
-
-static void mouse(int bn, int st, int x, int y)
+static void process_event(SDL_Event *ev)
{
- int bidx = bn - GLUT_LEFT_BUTTON;
- bool down = st == GLUT_DOWN;
-
- proc_modkeys();
- app_mouse_button(bidx, down, x, y);
+ switch(ev->type) {
+ case SDL_QUIT:
+ quit = true;
+ break;
+
+ case SDL_KEYDOWN:
+ case SDL_KEYUP:
+ proc_modkeys();
+ app_keyboard(ev->key.keysym.sym, ev->key.state == SDL_PRESSED);
+ break;
+
+ case SDL_MOUSEBUTTONDOWN:
+ case SDL_MOUSEBUTTONUP:
+ proc_modkeys();
+ app_mouse_button(ev->button.button - SDL_BUTTON_LEFT, ev->button.state == SDL_PRESSED,
+ ev->button.x * scale_factor, ev->button.y * scale_factor);
+ break;
+
+ case SDL_MOUSEMOTION:
+ if(mouse_grabbed) {
+ app_mouse_delta(ev->motion.xrel, ev->motion.yrel);
+ } else {
+ app_mouse_motion(ev->motion.x * scale_factor, ev->motion.y * scale_factor);
+ }
+ break;
+
+ case SDL_WINDOWEVENT:
+ if(ev->window.event == SDL_WINDOWEVENT_RESIZED) {
+ SDL_GL_GetDrawableSize(win, &win_width, &win_height);
+ win_aspect = (float)win_width / (float)win_height;
+ scale_factor = win_width / ev->window.data1;
+ app_reshape(win_width, win_height);
+ }
+ break;
+ }
}
static void proc_modkeys()
{
- int glutmod = glutGetModifiers();
-
modkeys = 0;
- if(glutmod & GLUT_ACTIVE_SHIFT) {
+ SDL_Keymod sdlmod = SDL_GetModState();
+ if(sdlmod & KMOD_SHIFT) {
modkeys |= MOD_SHIFT;
}
- if(glutmod & GLUT_ACTIVE_CTRL) {
- modkeys |= MOD_CTRL;
- }
- if(glutmod & GLUT_ACTIVE_ALT) {
+ if(sdlmod & KMOD_ALT) {
modkeys |= MOD_ALT;
}
+ if(sdlmod & KMOD_CTRL) {
+ modkeys |= MOD_CTRL;
+ }
}
--- /dev/null
+#include <stdio.h>
+#include <string.h>
+#include <stdarg.h>
+#include <gmath/gmath.h>
+#include <drawtext.h>
+#include "opengl.h"
+#include "ui.h"
+#include "app.h"
+
+#define FONTSZ 16
+
+static bool init();
+
+struct Message {
+ long start_time, show_until;
+ char *str;
+ Message *next;
+};
+static Message *msglist;
+
+static long timeout = 2000;
+static long trans_time = 250;
+static dtx_font *font;
+
+void set_message_timeout(long tm)
+{
+ timeout = tm;
+}
+
+void show_message(const char *fmt, ...)
+{
+ va_list ap;
+ char buf[512];
+
+ init();
+
+ va_start(ap, fmt);
+ vsnprintf(buf, sizeof buf, fmt, ap);
+ va_end(ap);
+
+ Message *msg = new Message;
+ int len = strlen(buf);
+ msg->str = new char[len + 1];
+ memcpy(msg->str, buf, len + 1);
+ msg->start_time = time_msec;
+ msg->show_until = time_msec + timeout;
+
+ Message dummy;
+ dummy.next = msglist;
+ Message *prev = &dummy;
+ while(prev->next && prev->next->show_until < msg->show_until) {
+ prev = prev->next;
+ }
+ msg->next = prev->next;
+ prev->next = msg;
+ msglist = dummy.next;
+}
+
+void draw_ui()
+{
+ if(!font) return;
+
+ while(msglist && msglist->show_until <= time_msec) {
+ Message *msg = msglist;
+ msglist = msg->next;
+ delete [] msg->str;
+ delete msg;
+ }
+
+ dtx_use_font(font, FONTSZ);
+
+ glMatrixMode(GL_PROJECTION);
+ glPushMatrix();
+ glLoadIdentity();
+ glOrtho(0, win_width, -win_height, 0, -1, 1);
+ glMatrixMode(GL_MODELVIEW);
+ glPushMatrix();
+ glLoadIdentity();
+
+ glPushAttrib(GL_ENABLE_BIT);
+ glDisable(GL_LIGHTING);
+ glDisable(GL_DEPTH_TEST);
+ glEnable(GL_BLEND);
+ glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+ glUseProgram(0);
+
+ Message *msg = msglist;
+ while(msg) {
+ long t = time_msec - msg->start_time;
+ long dur = msg->show_until - msg->start_time;
+ float alpha = smoothstep(0, trans_time, t) *
+ (1.0 - smoothstep(dur - trans_time, dur, t));
+ glColor4f(1.0, 0.5, 0.1, alpha);
+ glTranslatef(0, -dtx_line_height(), 0);
+ dtx_string(msg->str);
+ msg = msg->next;
+ }
+
+ glPopAttrib();
+
+ glMatrixMode(GL_PROJECTION);
+ glPopMatrix();
+ glMatrixMode(GL_MODELVIEW);
+ glPopMatrix();
+}
+
+static bool init()
+{
+ static bool done_init;
+ if(done_init) return true;
+
+ done_init = true;
+
+ if(!(font = dtx_open_font("data/ui.font", 0))) {
+ fprintf(stderr, "failed to open font: data/ui.font\n");
+ return false;
+ }
+ dtx_prepare_range(font, FONTSZ, 32, 127);
+ return true;
+}
--- /dev/null
+#ifndef UI_H_
+#define UI_H_
+
+void set_message_timeout(long timeout);
+void show_message(const char *fmt, ...);
+
+void draw_ui();
+
+#endif // UI_H_
projects / laserbrain_demo / commitdiff