nuclear@0: #include "game.h"
nuclear@2: #include "opt.h"
nuclear@0: #include "opengl.h"
nuclear@1: #include "level.h"
nuclear@1: #include "renderer.h"
nuclear@1: #include "camera.h"
nuclear@1: 
nuclear@2: static void view_matrix(int eye);
nuclear@2: static void proj_matrix(int eye);
nuclear@2: 
nuclear@2: int win_xsz, win_ysz;
nuclear@2: 
nuclear@2: bool keystate[GAME_MAX_KEYS];
nuclear@2: bool bnstate[GAME_MAX_BUTTONS];
nuclear@2: 
nuclear@2: float stereo_focus_dist = 0.25;
nuclear@2: float stereo_eye_sep = stereo_focus_dist / 30.0;
nuclear@1: 
nuclear@1: static Level *level;
nuclear@1: static Renderer *rend;
nuclear@1: static FpsCamera cam;
nuclear@0: 
nuclear@0: bool game_init()
nuclear@0: {
nuclear@1: 	printf("initializing OpenGL state\n");
nuclear@1: 	glEnable(GL_CULL_FACE);
nuclear@1: 	glEnable(GL_DEPTH_TEST);
nuclear@1: 	glEnable(GL_LIGHTING);
nuclear@1: 	glEnable(GL_LIGHT0);
nuclear@1: 
nuclear@2: 	float lpos[] = {-1, 1, 1, 0};
nuclear@2: 	glLightfv(GL_LIGHT0, GL_POSITION, lpos);
nuclear@2: 
nuclear@1: 	printf("initializing renderer\n");
nuclear@1: 	rend = new Renderer;
nuclear@1: 	rend->init();
nuclear@1: 
nuclear@1: 	printf("generating level\n");
nuclear@1: 	level = new Level;
nuclear@1: 	level->generate();
nuclear@1: 
nuclear@1: 	cam.input_move(0, 2, 2);
nuclear@1: 	cam.input_rotate(0, M_PI / 5, 0);
nuclear@1: 
nuclear@0: 	return true;
nuclear@0: }
nuclear@0: 
nuclear@0: void game_shutdown()
nuclear@0: {
nuclear@1: 	delete rend;
nuclear@1: 	delete level;
nuclear@0: }
nuclear@0: 
nuclear@0: void game_iter(double dt)
nuclear@0: {
nuclear@2: 	float offs = 4.0 * dt;
nuclear@1: 	float dx = 0, dy = 0;
nuclear@1: 
nuclear@1: 	// handle key input
nuclear@1: 	if(keystate['w'] || keystate['W']) {
nuclear@1: 		dy -= offs;
nuclear@1: 	}
nuclear@1: 	if(keystate['s'] || keystate['S']) {
nuclear@1: 		dy += offs;
nuclear@1: 	}
nuclear@1: 	if(keystate['d'] || keystate['D']) {
nuclear@1: 		dx += offs;
nuclear@1: 	}
nuclear@1: 	if(keystate['a'] || keystate['A']) {
nuclear@1: 		dx -= offs;
nuclear@1: 	}
nuclear@1: 
nuclear@1: 	cam.input_move(dx, 0, dy);
nuclear@0: }
nuclear@0: 
nuclear@0: void game_render()
nuclear@0: {
nuclear@2: 	if(opt.stereo) {
nuclear@2: 		glDrawBuffer(GL_BACK_LEFT);
nuclear@1: 
nuclear@2: 		glMatrixMode(GL_PROJECTION);
nuclear@2: 		glLoadIdentity();
nuclear@2: 		proj_matrix(-1);
nuclear@2: 		glMatrixMode(GL_MODELVIEW);
nuclear@2: 		glLoadIdentity();
nuclear@2: 		view_matrix(-1);
nuclear@1: 
nuclear@2: 		rend->render(level);
nuclear@1: 
nuclear@2: 		glDrawBuffer(GL_BACK_RIGHT);
nuclear@2: 
nuclear@2: 		glMatrixMode(GL_PROJECTION);
nuclear@2: 		glLoadIdentity();
nuclear@2: 		proj_matrix(1);
nuclear@2: 		glMatrixMode(GL_MODELVIEW);
nuclear@2: 		glLoadIdentity();
nuclear@2: 		view_matrix(1);
nuclear@2: 
nuclear@2: 		rend->render(level);
nuclear@2: 	} else {
nuclear@2: 		glMatrixMode(GL_PROJECTION);
nuclear@2: 		glLoadIdentity();
nuclear@2: 		proj_matrix(0);
nuclear@2: 		glMatrixMode(GL_MODELVIEW);
nuclear@2: 		glLoadIdentity();
nuclear@2: 		view_matrix(0);
nuclear@2: 
nuclear@2: 		rend->render(level);
nuclear@2: 	}
nuclear@0: }
nuclear@1: 
nuclear@1: void game_input_shoot(int bn)
nuclear@1: {
nuclear@1: }
nuclear@1: 
nuclear@1: void game_input_move(float x, float y, float z)
nuclear@1: {
nuclear@1: 	cam.input_move(x, y, z);
nuclear@1: }
nuclear@1: 
nuclear@1: void game_input_rot(float x, float y)
nuclear@1: {
nuclear@1: 	cam.input_rotate(x * 6.0, y * 6.0, 0);
nuclear@1: }
nuclear@2: 
nuclear@2: 
nuclear@2: static void view_matrix(int eye)
nuclear@2: {
nuclear@2: 	float offs = stereo_eye_sep * eye * 0.5;
nuclear@2: 	glTranslatef(-offs, 0, 0);
nuclear@2: 	cam.use_inverse();
nuclear@2: }
nuclear@2: 
nuclear@2: static void proj_matrix(int eye)
nuclear@2: {
nuclear@2: 	static const float fov = M_PI / 4.0;
nuclear@2: 	static const float near_clip = 0.1;
nuclear@2: 	static const float far_clip = 500.0;
nuclear@2: 
nuclear@2: 	float top = near_clip * tan(fov * 0.5);
nuclear@2: 	float right = top * (float)win_xsz / (float)win_ysz;
nuclear@2: 
nuclear@2: 	float frust_shift = -(float)eye * (stereo_eye_sep * 0.5 * near_clip / stereo_focus_dist);
nuclear@2: 	glFrustum(-right + frust_shift, right + frust_shift, -top, top, near_clip, far_clip);
nuclear@2: }