nuclear@0: #include <stdlib.h>
nuclear@0: #include "opengl.h"
nuclear@0: #include "game.h"
nuclear@1: #include "vein.h"
nuclear@1: #include "ship.h"
nuclear@1: #include "camera.h"
nuclear@3: #include "cockpit.h"
nuclear@0: 
nuclear@6: static const Vector3 fog_color(0.64, 0.1, 0.1);
nuclear@5: 
nuclear@1: static Vein *vein;
nuclear@6: static Ship *ship;
nuclear@1: 
nuclear@1: static int keystate[256];
nuclear@2: static int dbg_inside = false;
nuclear@4: static bool ignore_next_motion;
nuclear@1: 
nuclear@1: static OrbitCamera dbgcam;
nuclear@1: 
nuclear@1: static unsigned long msec, start_time = -1;
nuclear@0: 
nuclear@0: bool game_init()
nuclear@0: {
nuclear@0: 	glEnable(GL_DEPTH_TEST);
nuclear@0: 	glEnable(GL_CULL_FACE);
nuclear@0: 
nuclear@0: 	float lpos[] = {-1, 1, 1, 0};
nuclear@0: 	glLightfv(GL_LIGHT0, GL_POSITION, lpos);
nuclear@0: 
nuclear@3: 	// initialize the cockpit
nuclear@3: 	if(!cockpit_init()) {
nuclear@3: 		return false;
nuclear@3: 	}
nuclear@3: 
nuclear@3: 	// initialize the only level
nuclear@1: 	vein = new Vein;
nuclear@3: 	if(!vein->init()) {
nuclear@3: 		return false;
nuclear@3: 	}
nuclear@5: 	vein->set_fog_color(fog_color);
nuclear@5: 
nuclear@6: 	// create the player's ship
nuclear@6: 	ship = new Ship(vein);
nuclear@6: 
nuclear@5: 	glClearColor(fog_color.x, fog_color.y, fog_color.z, 1);
nuclear@1: 
nuclear@0: 	return true;
nuclear@0: }
nuclear@0: 
nuclear@0: void game_shutdown()
nuclear@0: {
nuclear@3: 	delete vein;
nuclear@3: 	cockpit_destroy();
nuclear@0: 	exit(0);
nuclear@0: }
nuclear@0: 
nuclear@1: void game_update(unsigned long ms)
nuclear@0: {
nuclear@1: 	static unsigned long last_upd;
nuclear@1: 
nuclear@0: 	if(start_time == 0) {
nuclear@1: 		start_time = ms;
nuclear@0: 	}
nuclear@1: 	msec = ms - start_time;
nuclear@1: 
nuclear@1: 	time_sec_t dt = (msec - last_upd) / 1000.0;
nuclear@1: 
nuclear@1: 	// handle key input
nuclear@1: 	if(keystate['w'] || keystate['W']) {
nuclear@9: 		ship->accelerate(4.0 * dt);
nuclear@1: 	}
nuclear@1: 	if(keystate['s'] || keystate['S']) {
nuclear@9: 		ship->accelerate(-4.0 * dt);
nuclear@1: 	}
nuclear@1: 	if(keystate['d'] || keystate['D']) {
nuclear@9: 		ship->accelerate_side(4.0 * dt);
nuclear@1: 	}
nuclear@1: 	if(keystate['a'] || keystate['A']) {
nuclear@9: 		ship->accelerate_side(-4.0 * dt);
nuclear@1: 	}
nuclear@1: 
nuclear@6: 	ship->update(dt);
nuclear@1: 
nuclear@1: 	last_upd = msec;
nuclear@0: }
nuclear@0: 
nuclear@0: void game_draw()
nuclear@0: {
nuclear@0: 	glMatrixMode(GL_MODELVIEW);
nuclear@0: 
nuclear@2: 	if(dbg_inside) {
nuclear@6: 		load_gl_matrix(ship->get_matrix().inverse());
nuclear@3: 	} else {
nuclear@3: 		dbgcam.use();
nuclear@2: 	}
nuclear@2: 
nuclear@6: 	vein->draw(ship->get_position());
nuclear@3: 
nuclear@3: 	if(!dbg_inside) {
nuclear@6: 		ship->dbg_draw();
nuclear@3: 	} else {
nuclear@3: 		cockpit_draw();
nuclear@3: 	}
nuclear@0: }
nuclear@0: 
nuclear@0: void game_input_keyb(int key, int state)
nuclear@0: {
nuclear@0: 	if(state) {
nuclear@0: 		switch(key) {
nuclear@0: 		case 27:
nuclear@0: 			game_shutdown();
nuclear@1: 			break;
nuclear@0: 
nuclear@2: 		case '\b':
nuclear@6: 		case 127:
nuclear@2: 			dbg_inside = !dbg_inside;
nuclear@3: 			if(dbg_inside) {
nuclear@3: 				glutPassiveMotionFunc(game_input_mmotion);
nuclear@3: 				glutSetCursor(GLUT_CURSOR_NONE);
nuclear@4: 
nuclear@4: 				ignore_next_motion = true;
nuclear@4: 				glutWarpPointer(win_xsz / 2, win_ysz / 2);
nuclear@3: 			} else {
nuclear@3: 				glutPassiveMotionFunc(0);
nuclear@3: 				glutSetCursor(GLUT_CURSOR_INHERIT);
nuclear@3: 			}
nuclear@2: 			break;
nuclear@2: 
nuclear@0: 		default:
nuclear@0: 			break;
nuclear@0: 		}
nuclear@0: 	}
nuclear@1: 
nuclear@1: 	if(key < 256) {
nuclear@1: 		keystate[key] = state;
nuclear@1: 	}
nuclear@0: }
nuclear@1: 
nuclear@1: static int bnstate[16];
nuclear@1: static int prev_x, prev_y;
nuclear@1: 
nuclear@1: void game_input_mbutton(int bn, int state, int x, int y)
nuclear@1: {
nuclear@1: 	if(bn < 16) {
nuclear@1: 		bnstate[bn] = state;
nuclear@1: 	}
nuclear@1: 	prev_x = x;
nuclear@1: 	prev_y = y;
nuclear@1: }
nuclear@1: 
nuclear@8: #define EDGE_PIXELS	(win_ysz / 4)
nuclear@8: 
nuclear@1: void game_input_mmotion(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@8: 	if(ignore_next_motion || abs(dx) >= win_xsz / 2 - EDGE_PIXELS ||
nuclear@8: 			abs(dy) >= win_ysz / 2 - EDGE_PIXELS) {
nuclear@4: 		ignore_next_motion = false;
nuclear@3: 		return;
nuclear@1: 	}
nuclear@3: 
nuclear@3: 	if(dbg_inside) {
nuclear@6: 		ship->turn((float)-dx / win_xsz, (float)-dy / win_ysz);
nuclear@3: 
nuclear@8: 		if(x < EDGE_PIXELS || x >= win_xsz - EDGE_PIXELS || y < EDGE_PIXELS || y >= win_ysz - EDGE_PIXELS) {
nuclear@8: 			glutWarpPointer(win_xsz / 2, win_ysz / 2);
nuclear@8: 		}
nuclear@3: 	} else {
nuclear@3: 		if(bnstate[0]) {
nuclear@3: 			dbgcam.input_rotate(10.0 * dx / win_xsz, 10.0 * dy / win_ysz, 0);
nuclear@3: 		}
nuclear@3: 		if(bnstate[2]) {
nuclear@3: 			dbgcam.input_zoom(10.0 * dy / win_ysz);
nuclear@3: 		}
nuclear@1: 	}
nuclear@1: }