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@1: 
nuclear@5: bool init();
nuclear@5: void cleanup();
nuclear@7: void idle();
nuclear@1: void disp();
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@5: static const char *level_file = "0.level";
nuclear@5: 
nuclear@1: int main(int argc, char **argv)
nuclear@1: {
nuclear@1: 	glutInit(&argc, argv);
nuclear@5: 
nuclear@5: 	if(argc > 1) {
nuclear@5: 		level_file = argv[1];
nuclear@5: 	}
nuclear@5: 
nuclear@1: 	glutInitWindowSize(800, 600);
nuclear@1: 	glutInitDisplayMode(GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE | GLUT_MULTISAMPLE);
nuclear@1: 	glutCreateWindow("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@5: 	if(!init()) {
nuclear@5: 		return 1;
nuclear@5: 	}
nuclear@5: 
nuclear@5: 	glutMainLoop();
nuclear@5: }
nuclear@5: 
nuclear@5: bool init()
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@5: 
nuclear@5: 	// load a tileset
nuclear@5: 	tileset = new TileSet;
nuclear@5: 	if(!tileset->load(datafile_path("default.tileset"))) {
nuclear@5: 		return false;
nuclear@5: 	}
nuclear@5: 	set_active_tileset(tileset);
nuclear@5: 
nuclear@1: 	level = new Level;
nuclear@7: 	printf("loading level: %s\n", level_file);
nuclear@5: 	if(!level->load(datafile_path(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@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@1: 	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
nuclear@1: 
nuclear@1: 	glMatrixMode(GL_MODELVIEW);
nuclear@1: 	glLoadIdentity();
nuclear@7: 	cam.use_inverse();
nuclear@1: 
nuclear@1: 	level->draw();
nuclear@1: 
nuclear@1: 	glutSwapBuffers();
nuclear@1: 	assert(glGetError() == GL_NO_ERROR);
nuclear@7: 
nuclear@7: 	usleep(10000);
nuclear@7: }
nuclear@7: 
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@7: 	float offs = 2.0 * 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@1: 	glMatrixMode(GL_PROJECTION);
nuclear@1: 	glLoadIdentity();
nuclear@7: 	gluPerspective(45.0, (float)x / (float)y, 0.25, 100.0);
nuclear@1: }
nuclear@1: 
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@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@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@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: }