nuclear@1: #include <stdio.h>
nuclear@1: #include <stdlib.h>
nuclear@1: #include <assert.h>
nuclear@7: #include <unistd.h>
nuclear@1: #include "opengl.h"
nuclear@1: #include "level.h"
nuclear@1: #include "camera.h"
nuclear@5: #include "datapath.h"
nuclear@5: #include "tileset.h"
nuclear@15: #include "renderer.h"
nuclear@18: #include "cfg.h"
nuclear@1: 
nuclear@17: bool init(int xsz, int ysz);
nuclear@5: void cleanup();
nuclear@7: void idle();
nuclear@1: void disp();
nuclear@15: void draw();
nuclear@18: void view_matrix(int eye);
nuclear@18: void proj_matrix(int eye);
nuclear@7: void update(unsigned long msec);
nuclear@1: void reshape(int x, int y);
nuclear@1: void keyb(unsigned char key, int x, int y);
nuclear@7: void key_release(unsigned char key, int x, int y);
nuclear@1: void mouse(int bn, int state, int x, int y);
nuclear@1: void motion(int x, int y);
nuclear@1: 
nuclear@5: static TileSet *tileset;
nuclear@1: static Level *level;
nuclear@7: 
nuclear@7: static FpsCamera cam;
nuclear@7: static bool keystate[256];
nuclear@1: 
nuclear@18: static float stereo_focus_dist = 0.25;
nuclear@18: static float stereo_eye_sep = stereo_focus_dist / 30.0;
nuclear@18: 
nuclear@5: 
nuclear@1: int main(int argc, char **argv)
nuclear@1: {
nuclear@1: 	glutInit(&argc, argv);
nuclear@5: 
nuclear@18: 	if(!cfg.parse_args(argc, argv)) {
nuclear@18: 		return 1;
nuclear@5: 	}
nuclear@5: 
nuclear@18: 	glutInitWindowSize(cfg.width, cfg.height);
nuclear@18: 	glutInitDisplayMode(GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE | (cfg.stereo ? GLUT_STEREO : 0));
nuclear@18: 	glutCreateWindow("dungeon crawler prototype");
nuclear@1: 
nuclear@7: 	glutIdleFunc(idle);
nuclear@1: 	glutDisplayFunc(disp);
nuclear@1: 	glutReshapeFunc(reshape);
nuclear@1: 	glutKeyboardFunc(keyb);
nuclear@7: 	glutKeyboardUpFunc(key_release);
nuclear@1: 	glutMouseFunc(mouse);
nuclear@1: 	glutMotionFunc(motion);
nuclear@1: 
nuclear@1: 	glewInit();
nuclear@1: 
nuclear@18: 	if(!init(cfg.width, cfg.height)) {
nuclear@5: 		return 1;
nuclear@5: 	}
nuclear@5: 
nuclear@5: 	glutMainLoop();
nuclear@5: }
nuclear@5: 
nuclear@17: bool init(int xsz, int ysz)
nuclear@5: {
nuclear@1: 	glEnable(GL_LIGHTING);
nuclear@1: 	glEnable(GL_LIGHT0);
nuclear@1: 	float ldir[] = {-1, 1, 2, 0};
nuclear@1: 	glLightfv(GL_LIGHT0, GL_POSITION, ldir);
nuclear@1: 	glEnable(GL_NORMALIZE);
nuclear@1: 
nuclear@1: 	glEnable(GL_DEPTH_TEST);
nuclear@1: 	glEnable(GL_CULL_FACE);
nuclear@1: 	glEnable(GL_MULTISAMPLE);
nuclear@1: 
nuclear@5: 	add_data_path("data");
nuclear@16: 	add_data_path("sdr");
nuclear@5: 
nuclear@17: 	if(!init_renderer(xsz, ysz)) {
nuclear@15: 		return false;
nuclear@15: 	}
nuclear@15: 
nuclear@5: 	// load a tileset
nuclear@5: 	tileset = new TileSet;
nuclear@18: 	printf("loading tileset: %s\n", cfg.tileset_file);
nuclear@18: 	if(!tileset->load(datafile_path(cfg.tileset_file))) {
nuclear@5: 		return false;
nuclear@5: 	}
nuclear@5: 	set_active_tileset(tileset);
nuclear@5: 
nuclear@1: 	level = new Level;
nuclear@18: 	printf("loading level: %s\n", cfg.level_file);
nuclear@18: 	if(!level->load(datafile_path(cfg.level_file))) {
nuclear@5: 		return false;
nuclear@1: 	}
nuclear@1: 
nuclear@7: 	cam.input_move(0, 0.5, 0);
nuclear@7: 
nuclear@5: 	return true;
nuclear@1: }
nuclear@1: 
nuclear@15: void cleanup()
nuclear@15: {
nuclear@15: 	delete level;
nuclear@15: 	delete tileset;
nuclear@15: 
nuclear@15: 	destroy_renderer();
nuclear@15: }
nuclear@15: 
nuclear@7: void idle()
nuclear@7: {
nuclear@7: 	glutPostRedisplay();
nuclear@7: }
nuclear@7: 
nuclear@1: void disp()
nuclear@1: {
nuclear@7: 	update(glutGet(GLUT_ELAPSED_TIME));
nuclear@7: 
nuclear@18: 	if(cfg.stereo) {
nuclear@18: 		glDrawBuffer(GL_BACK_LEFT);
nuclear@1: 
nuclear@18: 		glMatrixMode(GL_PROJECTION);
nuclear@18: 		glLoadIdentity();
nuclear@18: 		proj_matrix(-1);
nuclear@18: 		glMatrixMode(GL_MODELVIEW);
nuclear@18: 		glLoadIdentity();
nuclear@18: 		view_matrix(-1);
nuclear@1: 
nuclear@23: 		render_deferred(level);
nuclear@18: 
nuclear@18: 		glDrawBuffer(GL_BACK_RIGHT);
nuclear@18: 
nuclear@18: 		glMatrixMode(GL_PROJECTION);
nuclear@18: 		glLoadIdentity();
nuclear@18: 		proj_matrix(1);
nuclear@18: 		glMatrixMode(GL_MODELVIEW);
nuclear@18: 		glLoadIdentity();
nuclear@18: 		view_matrix(1);
nuclear@18: 
nuclear@23: 		render_deferred(level);
nuclear@18: 
nuclear@18: 	} else {
nuclear@18: 		glMatrixMode(GL_PROJECTION);
nuclear@18: 		glLoadIdentity();
nuclear@18: 		proj_matrix(0);
nuclear@18: 		glMatrixMode(GL_MODELVIEW);
nuclear@18: 		glLoadIdentity();
nuclear@18: 		view_matrix(0);
nuclear@18: 
nuclear@23: 		render_deferred(level);
nuclear@18: 	}
nuclear@1: 
nuclear@1: 	glutSwapBuffers();
nuclear@1: 	assert(glGetError() == GL_NO_ERROR);
nuclear@7: 
nuclear@7: 	usleep(10000);
nuclear@7: }
nuclear@7: 
nuclear@18: void view_matrix(int eye)
nuclear@18: {
nuclear@18: 	float offs = stereo_eye_sep * eye * 0.5;
nuclear@18: 	glTranslatef(-offs, 0, 0);
nuclear@18: 	cam.use_inverse();
nuclear@18: }
nuclear@18: 
nuclear@18: void proj_matrix(int eye)
nuclear@18: {
nuclear@18: 	static const float fov = M_PI / 4.0;
nuclear@18: 	static const float near_clip = 0.1;
nuclear@18: 	static const float far_clip = 100.0;
nuclear@18: 
nuclear@18: 	float top = near_clip * tan(fov * 0.5);
nuclear@18: 	float right = top * (float)cfg.width / (float)cfg.height;
nuclear@18: 
nuclear@18: 	float frust_shift = -(float)eye * (stereo_eye_sep * 0.5 * near_clip / stereo_focus_dist);
nuclear@18: 	glFrustum(-right + frust_shift, right + frust_shift, -top, top, near_clip, far_clip);
nuclear@18: }
nuclear@18: 
nuclear@18: 
nuclear@7: void update(unsigned long msec)
nuclear@7: {
nuclear@7: 	static unsigned long last_upd;
nuclear@7: 
nuclear@7: 	if(last_upd == 0) {
nuclear@7: 		last_upd = msec;
nuclear@7: 	}
nuclear@7: 	float dt = (float)(msec - last_upd) / 1000.0;
nuclear@7: 
nuclear@9: 	float offs = 2.5 * dt;
nuclear@7: 	float dx = 0, dy = 0;
nuclear@7: 
nuclear@7: 	// handle key input
nuclear@7: 	if(keystate['w'] || keystate['W']) {
nuclear@7: 		dy -= offs;
nuclear@7: 	}
nuclear@7: 	if(keystate['s'] || keystate['S']) {
nuclear@7: 		dy += offs;
nuclear@7: 	}
nuclear@7: 	if(keystate['d'] || keystate['D']) {
nuclear@7: 		dx += offs;
nuclear@7: 	}
nuclear@7: 	if(keystate['a'] || keystate['A']) {
nuclear@7: 		dx -= offs;
nuclear@7: 	}
nuclear@7: 
nuclear@7: 	cam.input_move(dx, 0, dy);
nuclear@7: 
nuclear@7: 	last_upd = msec;
nuclear@1: }
nuclear@1: 
nuclear@1: void reshape(int x, int y)
nuclear@1: {
nuclear@1: 	glViewport(0, 0, x, y);
nuclear@18: 	cfg.width = x;
nuclear@18: 	cfg.height = y;
nuclear@1: }
nuclear@1: 
nuclear@18: static bool stereo_shift_pressed;
nuclear@18: 
nuclear@1: void keyb(unsigned char key, int x, int y)
nuclear@1: {
nuclear@1: 	switch(key) {
nuclear@1: 	case 27:
nuclear@1: 		exit(0);
nuclear@18: 
nuclear@18: 	case 'z':
nuclear@18: 		stereo_shift_pressed = true;
nuclear@18: 		break;
nuclear@18: 
nuclear@18: 	case '\n':
nuclear@18: 	case '\r':
nuclear@18: 		{
nuclear@18: 			static bool fullscr;
nuclear@18: 			if(glutGetModifiers() & GLUT_ACTIVE_ALT) {
nuclear@18: 				fullscr = !fullscr;
nuclear@18: 				if(fullscr) {
nuclear@18: 					glutFullScreen();
nuclear@18: 				} else {
nuclear@18: 					glutPositionWindow(20, 20);
nuclear@18: 				}
nuclear@18: 			}
nuclear@18: 		}
nuclear@18: 		break;
nuclear@18: 
nuclear@18: 	default:
nuclear@18: 		break;
nuclear@1: 	}
nuclear@7: 
nuclear@7: 	keystate[key] = true;
nuclear@7: }
nuclear@7: 
nuclear@7: void key_release(unsigned char key, int x, int y)
nuclear@7: {
nuclear@18: 	switch(key) {
nuclear@18: 	case 'z':
nuclear@18: 		stereo_shift_pressed = false;
nuclear@18: 		break;
nuclear@18: 
nuclear@18: 	default:
nuclear@18: 		break;
nuclear@18: 	}
nuclear@18: 
nuclear@7: 	keystate[key] = false;
nuclear@1: }
nuclear@1: 
nuclear@1: static int prev_x, prev_y;
nuclear@1: static bool bnstate[32];
nuclear@1: 
nuclear@1: void mouse(int bn, int state, int x, int y)
nuclear@1: {
nuclear@1: 	prev_x = x;
nuclear@1: 	prev_y = y;
nuclear@1: 	bnstate[bn - GLUT_LEFT_BUTTON] = state == GLUT_DOWN;
nuclear@1: }
nuclear@1: 
nuclear@1: void motion(int x, int y)
nuclear@1: {
nuclear@1: 	int dx = x - prev_x;
nuclear@1: 	int dy = y - prev_y;
nuclear@1: 	prev_x = x;
nuclear@1: 	prev_y = y;
nuclear@1: 
nuclear@18: 	if(stereo_shift_pressed) {
nuclear@18: 		if(dy != 0) {
nuclear@18: 			stereo_focus_dist += dy * 0.01;
nuclear@18: 			stereo_eye_sep = stereo_focus_dist / 30.0;
nuclear@18: 			printf("foc: %f, sep: %f\n", stereo_focus_dist, stereo_eye_sep);
nuclear@18: 			glutPostRedisplay();
nuclear@18: 		}
nuclear@18: 		return;
nuclear@18: 	}
nuclear@18: 
nuclear@1: 	if(bnstate[0]) {
nuclear@7: 		cam.input_rotate(dy * 0.01, dx * 0.01, 0);
nuclear@1: 		glutPostRedisplay();
nuclear@1: 	}
nuclear@1: 	if(bnstate[2]) {
nuclear@1: 		cam.input_zoom(dy * 0.1);
nuclear@1: 		glutPostRedisplay();
nuclear@1: 	}
nuclear@1: }