nuclear@0: #include <stdlib.h>
nuclear@0: #include <ctype.h>
nuclear@0: #include <assert.h>
nuclear@0: #include "opengl.h"
nuclear@0: 
nuclear@0: #include "game.h"
nuclear@0: #include "input.h"
nuclear@0: #include "screen.h"
nuclear@0: #include "logger.h"
nuclear@0: 
nuclear@0: /* called by any other part of the game when a redisplay is needed
nuclear@0:  * (mostly useful for tools which do not redisplay continuously)
nuclear@0:  */
nuclear@0: void request_redisplay();
nuclear@0: 
nuclear@0: void swap_buffers();
nuclear@0: 
nuclear@0: static void display(void);
nuclear@0: static void reshape(int x, int y);
nuclear@0: static void keydown(unsigned char key, int x, int y);
nuclear@0: static void keyup(unsigned char key, int x, int y);
nuclear@0: static void skeydown(int key, int x, int y);
nuclear@0: static void skeyup(int key, int x, int y);
nuclear@0: static void mouse(int bn, int state, int x, int y);
nuclear@0: static void motion(int x, int y);
nuclear@0: static void passive_motion(int x, int y);
nuclear@0: 
nuclear@0: static long redisp_interval;
nuclear@0: 
nuclear@0: int main(int argc, char **argv)
nuclear@0: {
nuclear@0: 	glutInit(&argc, argv);
nuclear@0: 	glutInitWindowSize(800, 600);
nuclear@0: 	glutInitDisplayMode(GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE | GLUT_MULTISAMPLE);
nuclear@0: 	glutCreateWindow("Xmass inferno");
nuclear@0: 
nuclear@0: 	glutDisplayFunc(display);
nuclear@0: 	glutReshapeFunc(reshape);
nuclear@0: 	glutKeyboardFunc(keydown);
nuclear@0: 	glutKeyboardUpFunc(keyup);
nuclear@0: 	glutSpecialFunc(skeydown);
nuclear@0: 	glutSpecialUpFunc(skeyup);
nuclear@0: 	glutMouseFunc(mouse);
nuclear@0: 	glutMotionFunc(motion);
nuclear@0: 	glutPassiveMotionFunc(passive_motion);
nuclear@0: 
nuclear@0: 	game_set_args(argc, argv);
nuclear@0: 	if(!game_init()) {
nuclear@0: 		return 1;
nuclear@0: 	}
nuclear@0: 	atexit(game_cleanup);
nuclear@0: 
nuclear@0: 	glutMainLoop();
nuclear@0: 	return 0;
nuclear@0: }
nuclear@0: 
nuclear@0: void request_redisplay()
nuclear@0: {
nuclear@0: 	glutPostRedisplay();
nuclear@0: }
nuclear@0: 
nuclear@0: void swap_buffers()
nuclear@0: {
nuclear@0: 	glUseProgram(0);
nuclear@0: 	glutSwapBuffers();
nuclear@0: }
nuclear@0: 
nuclear@0: static void display()
nuclear@0: {
nuclear@0: 	long ival = current_screen()->redisplay_interval();
nuclear@0: 	if(ival && !redisp_interval) {
nuclear@0: 		debug_log("switching to auto-redisplay (interval: %ld)\n", redisp_interval);
nuclear@0: 		glutIdleFunc(request_redisplay);
nuclear@0: 	}
nuclear@0: 	if(!ival && redisp_interval) {
nuclear@0: 		debug_log("switching to manual redisplay\n");
nuclear@0: 		glutIdleFunc(0);
nuclear@0: 	}
nuclear@0: 	redisp_interval = ival;
nuclear@0: 
nuclear@0: 	game_display();
nuclear@0: 	// TODO implement framerate limiter
nuclear@0: }
nuclear@0: 
nuclear@0: 
nuclear@0: static void reshape(int x, int y)
nuclear@0: {
nuclear@0: 	game_reshape(x, y);
nuclear@0: }
nuclear@0: 
nuclear@0: /* GLUT doesn't have any callbacks for modifier keys, so we fake it by calling
nuclear@0:  * this function all over the place, to generate fake events whenever a modifier
nuclear@0:  * key is detected to have changed state.
nuclear@0:  * The limitation is that this will only detect modkey changes whenever a regular
nuclear@0:  * key is pressed or released, or when a mouse button is pressed or released.
nuclear@0:  */
nuclear@0: static void handle_modkeys()
nuclear@0: {
nuclear@0: 	static int modstate;
nuclear@0: 
nuclear@0: 	int mod = glutGetModifiers();
nuclear@0: 	if(mod != modstate) {
nuclear@0: 		int diff = mod ^ modstate;
nuclear@0: 
nuclear@0: 		if(diff & GLUT_ACTIVE_SHIFT) {
nuclear@0: 			bool pressed = mod & GLUT_ACTIVE_SHIFT;
nuclear@0: 			game_key(KEY_LSHIFT, pressed);
nuclear@0: 		}
nuclear@0: 		if(diff & GLUT_ACTIVE_CTRL) {
nuclear@0: 			bool pressed = mod & GLUT_ACTIVE_CTRL;
nuclear@0: 			game_key(KEY_LCTRL, pressed);
nuclear@0: 		}
nuclear@0: 		if(diff & GLUT_ACTIVE_ALT) {
nuclear@0: 			bool pressed = mod & GLUT_ACTIVE_ALT;
nuclear@0: 			game_key(KEY_LALT, pressed);
nuclear@0: 		}
nuclear@0: 	}
nuclear@0: 	modstate = mod;
nuclear@0: }
nuclear@0: 
nuclear@0: static int translate_special_key(int key)
nuclear@0: {
nuclear@0: 	if(key >= GLUT_KEY_F1 && key <= GLUT_KEY_F12) {
nuclear@0: 		return (key - GLUT_KEY_F1) + KEY_F1;
nuclear@0: 	}
nuclear@0: 	if(key >= GLUT_KEY_LEFT && key <= GLUT_KEY_PAGE_DOWN) {
nuclear@0: 		return (key - GLUT_KEY_LEFT) + KEY_LEFT;
nuclear@0: 	}
nuclear@0: 
nuclear@0: 	switch(key) {
nuclear@0: 	case GLUT_KEY_HOME:
nuclear@0: 		return KEY_HOME;
nuclear@0: 	case GLUT_KEY_END:
nuclear@0: 		return KEY_END;
nuclear@0: 	case GLUT_KEY_INSERT:
nuclear@0: 		return KEY_INSERT;
nuclear@0: 
nuclear@0: 	default:
nuclear@0: 		break;
nuclear@0: 	}
nuclear@0: 	return 0;
nuclear@0: }
nuclear@0: 
nuclear@0: static void keydown(unsigned char c, int x, int y)
nuclear@0: {
nuclear@0: 	int key = c;
nuclear@0: 	if(key == 127) {
nuclear@0: 		key = KEY_DELETE;
nuclear@0: 	}
nuclear@0: 
nuclear@0: 	handle_modkeys();
nuclear@0: 	game_key(key, true);
nuclear@0: }
nuclear@0: 
nuclear@0: static void keyup(unsigned char c, int x, int y)
nuclear@0: {
nuclear@0: 	int key = c;
nuclear@0: 	if(key == 127) {
nuclear@0: 		key = KEY_DELETE;
nuclear@0: 	}
nuclear@0: 
nuclear@0: 	handle_modkeys();
nuclear@0: 	game_key(key, false);
nuclear@0: }
nuclear@0: 
nuclear@0: static void skeydown(int key, int x, int y)
nuclear@0: {
nuclear@0: 	handle_modkeys();
nuclear@0: 
nuclear@0: 	if((key = translate_special_key(key)) > 0) {
nuclear@0: 		game_key(key, true);
nuclear@0: 	}
nuclear@0: }
nuclear@0: 
nuclear@0: static void skeyup(int key, int x, int y)
nuclear@0: {
nuclear@0: 	handle_modkeys();
nuclear@0: 
nuclear@0: 	if((key = translate_special_key(key)) > 0) {
nuclear@0: 		game_key(key, false);
nuclear@0: 	}
nuclear@0: }
nuclear@0: 
nuclear@0: static void mouse(int bn, int state, int x, int y)
nuclear@0: {
nuclear@0: 	handle_modkeys();
nuclear@0: 
nuclear@0: 	int bnidx = bn - GLUT_LEFT_BUTTON;
nuclear@0: 	bool bnstate = state == GLUT_DOWN;
nuclear@0: 
nuclear@0: 	current_screen()->button(bnidx, bnstate, x, y);
nuclear@0: 	set_mouse_state(x, y, bnidx, bnstate);	// this MUST be after the event dispatch
nuclear@0: }
nuclear@0: 
nuclear@0: static void motion(int x, int y)
nuclear@0: {
nuclear@0: 	set_mouse_state(x, y);
nuclear@0: 	current_screen()->motion(x, y, false);
nuclear@0: }
nuclear@0: 
nuclear@0: static void passive_motion(int x, int y)
nuclear@0: {
nuclear@0: 	set_mouse_state(x, y);
nuclear@0: 	current_screen()->motion(x, y, true);
nuclear@0: }