nuclear@0: #include <vector>
nuclear@0: #include <assert.h>
nuclear@0: 
nuclear@0: #include "opengl.h"
nuclear@0: #include "game.h"
nuclear@0: #include "input.h"
nuclear@0: #include "datapath.h"
nuclear@0: #include "shader.h"
nuclear@0: #include "sdrman.h"
nuclear@0: #include "unistate.h"
nuclear@0: #include "scr_debug.h"
nuclear@0: #include "scr_game.h"
nuclear@0: #include "logger.h"
nuclear@0: #include "mesh.h"
nuclear@0: #include "audio/audio.h"
nuclear@0: #include "timer.h"
nuclear@0: 
nuclear@0: static void toggle_debug();
nuclear@0: 
nuclear@0: static char *def_argv[] = { (char*)"game", 0 };
nuclear@0: 
nuclear@0: static int argc = 1;
nuclear@0: static char **argv = def_argv;
nuclear@0: static int width, height;
nuclear@0: 
nuclear@0: static std::vector<Screen*> screens;
nuclear@0: static Screen *debug_screen;
nuclear@0: 
nuclear@0: static void standard_state_uniforms();
nuclear@0: static bool create_screens();
nuclear@0: 
nuclear@0: ShaderProg *defsdr;
nuclear@0: Timer timer;
nuclear@0: 
nuclear@0: void game_set_args(int argc, char **argv)
nuclear@0: {
nuclear@0: 	::argc = argc;
nuclear@0: 	::argv = argv;
nuclear@0: }
nuclear@0: 
nuclear@0: bool game_init()
nuclear@0: {
nuclear@0: 	init_opengl();
nuclear@0: 	CHECKGLERR;
nuclear@0: 
nuclear@0: 	/*
nuclear@0: #ifdef __GLEW_H__
nuclear@0: 	if(GLEW_ARB_multisample) {
nuclear@0: 		info_log("enabling multisampling\n");
nuclear@0: 		glEnable(GL_MULTISAMPLE);
nuclear@0: 	} else {
nuclear@0: 		info_log("no multisampling support, will try old-style smoothing\n");
nuclear@0: 		// line smoothing enabled when needed (mostly by tools)
nuclear@0: 	}
nuclear@0: #endif
nuclear@0: 	*/
nuclear@0: 
nuclear@0: 	// The configuration file is expected to be on the root
nuclear@0: 	// of our data archive.
nuclear@0: 	add_data_path("data");
nuclear@0: 	add_data_path("sdr");
nuclear@0: 
nuclear@0: 	standard_state_uniforms();
nuclear@0: 
nuclear@0: 	if(!(defsdr = get_sdrprog("default.v.glsl", "default.p.glsl"))) {
nuclear@0: 		error_log("failed to load default shader, aborting\n");
nuclear@0: 		return false;
nuclear@0: 	}
nuclear@0: 
nuclear@0: 	glEnable(GL_DEPTH_TEST);
nuclear@0: 	glEnable(GL_CULL_FACE);
nuclear@0: 
nuclear@0: 	init_audio();
nuclear@0: 
nuclear@0: 	if(!create_screens()) {
nuclear@0: 		error_log("failed to create scenes\n");
nuclear@0: 		return false;
nuclear@0: 	}
nuclear@0: #if defined(TARGET_IPHONE) && !defined(NDEBUG)
nuclear@0: 	//toggle_debug();
nuclear@0: #endif
nuclear@0: 
nuclear@0: 	return true;
nuclear@0: }
nuclear@0: 
nuclear@0: void game_cleanup()
nuclear@0: {
nuclear@0: 	destroy_audio();
nuclear@0: 
nuclear@0: 	delete defsdr;
nuclear@0: 
nuclear@0: 	// pop all screens
nuclear@0: 	while(current_screen()) {
nuclear@0: 		pop_screen();
nuclear@0: 	}
nuclear@0: 	// and then destroy them
nuclear@0: 	for(size_t i=0; i<screens.size(); i++) {
nuclear@0: 		delete screens[i];
nuclear@0: 	}
nuclear@0: 	delete debug_screen;
nuclear@0: }
nuclear@0: 
nuclear@0: void game_display()
nuclear@0: {
nuclear@0: 	unsigned long msec = timer.get_msec();
nuclear@0: 
nuclear@0: 	// set current global time state uniform
nuclear@0: 	static int st_time_idx = -1;
nuclear@0: 	if(st_time_idx == -1) {
nuclear@0: 		st_time_idx = get_unistate_index("st_time");
nuclear@0: 	}
nuclear@0: 	set_unistate(st_time_idx, (float)msec / 1000.0f);
nuclear@0: 
nuclear@0: 	current_screen()->update(msec);
nuclear@0: 
nuclear@0: 	glClearColor(0, 0, 0, 1);
nuclear@0: 	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
nuclear@0: 
nuclear@0: 	current_screen()->pre_draw();
nuclear@0: 	current_screen()->display();
nuclear@0: 	current_screen()->post_draw();
nuclear@0: 
nuclear@0: 	swap_buffers();
nuclear@0: 	CHECKGLERR;
nuclear@0: }
nuclear@0: 
nuclear@0: void game_reshape(int x, int y)
nuclear@0: {
nuclear@0: 	width = x;
nuclear@0: 	height = y;
nuclear@0: 
nuclear@0: 	// set framebuffer size uniform
nuclear@0: 	static int st_fbsize_idx = -1;
nuclear@0: 	if(st_fbsize_idx == -1) {
nuclear@0: 		st_fbsize_idx = get_unistate_index("st_fbsize");
nuclear@0: 	}
nuclear@0: 	set_unistate(st_fbsize_idx, Vector2(x, y));
nuclear@0: 
nuclear@0: 	glViewport(0, 0, x, y);
nuclear@0: 	current_screen()->reshape(x, y);
nuclear@0: }
nuclear@0: 
nuclear@0: void game_key(int key, bool pressed)
nuclear@0: {
nuclear@0: 	// special key processing
nuclear@0: 	if(pressed) {
nuclear@0: 		switch(key) {
nuclear@0: 		case 27:
nuclear@0: 			exit(0);
nuclear@0: 
nuclear@0: 		case '`':
nuclear@0: 			toggle_debug();
nuclear@0: 			break;
nuclear@0: 
nuclear@0: 		default:
nuclear@0: 			break;
nuclear@0: 		}
nuclear@0: 	}
nuclear@0: 	set_key_state(key, pressed);
nuclear@0: 	current_screen()->keyboard(key, pressed);
nuclear@0: }
nuclear@0: 
nuclear@0: 
nuclear@0: int get_screen_width()
nuclear@0: {
nuclear@0: 	return width;
nuclear@0: }
nuclear@0: 
nuclear@0: int get_screen_height()
nuclear@0: {
nuclear@0: 	return height;
nuclear@0: }
nuclear@0: 
nuclear@0: 
nuclear@0: 
nuclear@0: static void standard_state_uniforms()
nuclear@0: {
nuclear@0: 	// setup all the standard state uniforms
nuclear@0: 	add_unistate("st_world_matrix", ST_MATRIX4);
nuclear@0: 	add_unistate("st_world_matrix_transpose", ST_MATRIX4);
nuclear@0: 	//add_unistate("st_world_matrix_inverse", ST_MATRIX4);
nuclear@0: 	add_unistate("st_world_matrix3", ST_MATRIX3);
nuclear@0: 
nuclear@0: 	add_unistate("st_view_matrix", ST_MATRIX4);
nuclear@0: 	add_unistate("st_view_matrix_transpose", ST_MATRIX4);
nuclear@0: 	//add_unistate("st_view_matrix_inverse", ST_MATRIX4);
nuclear@0: 	add_unistate("st_view_matrix3", ST_MATRIX3);
nuclear@0: 
nuclear@0: 	add_unistate("st_proj_matrix", ST_MATRIX4);
nuclear@0: 	//add_unistate("st_proj_matrix_inverse", ST_MATRIX4);
nuclear@0: 
nuclear@0: 	add_unistate("st_tex_matrix", ST_MATRIX4);
nuclear@0: 	//add_unistate("st_tex_matrix_inverse", ST_MATRIX4);
nuclear@0: 
nuclear@0: 	//add_unistate("st_mvp_matrix", ST_MATRIX4);
nuclear@0: 	//add_unistate("st_mvp_matrix_inverse", ST_MATRIX4);
nuclear@0: 
nuclear@0: 	add_unistate("st_fbsize", ST_FLOAT2);
nuclear@0: 
nuclear@0: 	add_unistate("st_time", ST_FLOAT);
nuclear@0: 
nuclear@0: 	add_unistate("st_light_pos", ST_FLOAT3);
nuclear@0: 	add_unistate("st_light_color", ST_FLOAT3);
nuclear@0: 	add_unistate("st_light_radius", ST_FLOAT);
nuclear@0: 
nuclear@0: 	add_unistate("st_mtl_diffuse", ST_FLOAT3);
nuclear@0: 	add_unistate("st_mtl_specular", ST_FLOAT3);
nuclear@0: 	add_unistate("st_mtl_shininess", ST_FLOAT);
nuclear@0: 	add_unistate("st_mtl_alpha", ST_FLOAT);
nuclear@0: }
nuclear@0: 
nuclear@0: static bool create_screens()
nuclear@0: {
nuclear@0: 	Screen *scr;
nuclear@0: 
nuclear@0: 	// create the debug overlay screen
nuclear@0: 	debug_screen = new DebugScreen;
nuclear@0: 	if(!debug_screen->init()) {
nuclear@0: 		return false;
nuclear@0: 	}
nuclear@0: 
nuclear@0: 	// create the starting screen last
nuclear@0: 	scr = new GameScreen;
nuclear@0: 	if(!scr->init()) {
nuclear@0: 		return false;
nuclear@0: 	}
nuclear@0: 	screens.push_back(scr);
nuclear@0: 
nuclear@0: 	info_log("start-screen: %s\n", scr->get_name());
nuclear@0: 	push_screen(scr);
nuclear@0: 	return true;
nuclear@0: }
nuclear@0: 
nuclear@0: static void toggle_debug()
nuclear@0: {
nuclear@0: 	if(dynamic_cast<DebugScreen*>(current_screen())) {
nuclear@0: 		pop_screen();
nuclear@0: 	} else {
nuclear@0: 		push_screen(debug_screen);
nuclear@0: 	}
nuclear@0: }