void scotland_update() {
camera* cam = entity_get("camera");
light* sun = entity_get("sun");
static_object* skydome = entity_get("skydome");
landscape* world = entity_get("world");
sun_orbit += frame_time() * 0.01;
sun->position.x = 512 + sin(sun_orbit) * 512;
sun->position.y = cos(sun_orbit) * 512;
sun->position.z = 512;
sun->target = v3(512, 0, 512);
if (w_held || s_held) {
vector3 cam_dir = v3_normalize(v3_sub(cam->target, cam->position));
float speed = 0.5;
if (!freecam) speed = 0.05;
if (w_held) {
cam->position = v3_add(cam->position, v3_mul(cam_dir, speed));
}
if (s_held) {
cam->position = v3_sub(cam->position, v3_mul(cam_dir, speed));
}
if (!freecam) {
float height = terrain_height(world->terrain, v2(cam->position.x, cam->position.z));
cam->position.y = height + 1;
}
cam->target = v3_add(cam->position, cam_dir);
}
Uint8 keystate = SDL_GetMouseState(NULL, NULL);
if(keystate & SDL_BUTTON(1)){
float a1 = -(float)mouse_x * 0.005;
float a2 = (float)mouse_y * 0.005;
vector3 cam_dir = v3_normalize(v3_sub(cam->target, cam->position));
cam_dir.y += -a2;
vector3 side_dir = v3_normalize(v3_cross(cam_dir, v3(0,1,0)));
cam_dir = v3_add(cam_dir, v3_mul(side_dir, -a1));
cam_dir = v3_normalize(cam_dir);
cam->target = v3_add(cam->position, cam_dir);
}
mouse_x = 0;
mouse_y = 0;
ui_button* framerate = ui_elem_get("framerate");
ui_button_set_label(framerate, frame_rate_string());
}
vec3_t anm_get_scaling(struct anm_node *node, anm_time_t tm)
{
vec3_t s, ps;
s = anm_get_node_scaling(node, tm);
if(!node->parent) {
return s;
}
ps = anm_get_scaling(node->parent, tm);
return v3_mul(s, ps);
}
void sea_event(SDL_Event event) {
camera* cam = entity_get("camera");
light* sun = entity_get("sun");
switch(event.type) {
case SDL_KEYUP:
if (event.key.keysym.sym == SDLK_SPACE) {
char ball_name[20];
sprintf(ball_name, "ball_%i", ball_count);
ball_count++;
physics_object* ball = entity_new(ball_name, physics_object);
ball->renderable = asset_get("./resources/ball.obj");
ball->collision_body = collision_body_new_sphere(sphere_new(v3_zero(), 1));
ball->position = cam->position;
ball->scale = v3(0.5, 0.5, 0.5);
ball->velocity = v3_mul(v3_normalize(v3_sub(cam->target, cam->position)), 75);
}
case SDL_MOUSEBUTTONDOWN:
if (event.button.button == SDL_BUTTON_WHEELUP) {
cam->position = v3_sub(cam->position, v3_normalize(cam->position));
}
if (event.button.button == SDL_BUTTON_WHEELDOWN) {
cam->position = v3_add(cam->position, v3_normalize(cam->position));
}
break;
case SDL_MOUSEMOTION:
mouse_x = event.motion.xrel;
mouse_y = event.motion.yrel;
break;
}
}
void sea_init() {
graphics_viewport_set_dimensions(1280, 720);
graphics_viewport_set_title("Sea");
camera* cam = entity_new("camera", camera);
cam->position = v3(50.0, 50.0, 50.0);
cam->target = v3(0, 5, 0);
cam->near_clip = 0.1;
light* sun = entity_new("sun", light);
light_set_type(sun, light_type_spot);
sun->position = v3(20,23,16);
sun->ambient_color = v3(0.5, 0.5, 0.5);
sun->diffuse_color = v3(1.0, 0.894, 0.811);
sun->specular_color = v3_mul(v3(1.0, 0.894, 0.811), 4);
sun->power = 5;
light* backlight = entity_new("backlight", light);
light_set_type(backlight, light_type_point);
backlight->position = v3(-22,10,-13);
backlight->ambient_color = v3(0.2, 0.2, 0.2);
backlight->diffuse_color = v3(0.729, 0.729, 1.0);
backlight->specular_color = v3_mul(v3(0.729, 0.729, 1.0), 1);
backlight->power = 2;
shadow_mapper_init(sun);
forward_renderer_init();
forward_renderer_set_camera(cam);
forward_renderer_set_shadow_light(sun);
forward_renderer_set_shadow_texture( shadow_mapper_depth_texture() );
forward_renderer_add_light(sun);
forward_renderer_add_light(backlight);
load_folder("./resources/");
texture* noise1 = asset_get("./resources/noise1.dds");
texture* noise2 = asset_get("./resources/noise2.dds");
texture* noise3 = asset_get("./resources/noise3.dds");
texture* noise4 = asset_get("./resources/noise4.dds");
texture* noise5 = asset_get("./resources/noise5.dds");
texture* skydome_tex = asset_get("./resources/skybox_cloud_10.dds");
texture* water_calm = asset_get("./resources/water_calm.dds");
texture* water_foam = asset_get("./resources/water_foam.dds");
material* seaplane_mat = asset_get("./resources/seaplane.mat");
material_set_property(seaplane_mat, "tex_noise1", noise1, mat_type_texture);
material_set_property(seaplane_mat, "tex_noise2", noise2, mat_type_texture);
material_set_property(seaplane_mat, "tex_noise3", noise3, mat_type_texture);
material_set_property(seaplane_mat, "tex_noise4", noise4, mat_type_texture);
material_set_property(seaplane_mat, "tex_noise5", noise5, mat_type_texture);
material_set_property(seaplane_mat, "tex_skybox", skydome_tex, mat_type_texture);
material_set_property(seaplane_mat, "tex_calm_water", water_calm, mat_type_texture);
material_set_property(seaplane_mat, "tex_foam_water", water_foam, mat_type_texture);
renderable* r_seaplane = asset_get("./resources/seaplane.obj");
renderable_set_material(r_seaplane, seaplane_mat);
static_object* s_seaplane = entity_new("seaplane", static_object);
s_seaplane->renderable = r_seaplane;
s_seaplane->scale = v3(3,1,3);
static_object* skydome = entity_new("skydome", static_object);
skydome->renderable = asset_get("./resources/skydome.obj");
renderable_set_material(skydome->renderable, asset_get("./resources/skydome.mat"));
skydome->position = v3(0, -512, 0);
skydome->scale = v3(1024, 1024, 1024);
load_folder("./resources/corvette/");
renderable* r_corvette = asset_get("./resources/corvette/corvette.obj");
multi_material* m_corvette = asset_get("./resources/corvette/corvette.mmat");
renderable_set_multi_material(r_corvette, m_corvette);
static_object* s_corvette = entity_new("corvette", static_object);
s_corvette->renderable = r_corvette;
s_corvette->collision_body = collision_body_new_mesh(asset_get("./resources/corvette/corvette.col"));
s_corvette->scale = v3(1.5, 1.5, 1.5);
s_corvette->position = v3(0, 0.5, 0);
static_object* center_sphere = entity_new("center_sphere", static_object);
center_sphere->position = v3(0, 5, 0);
center_sphere->renderable = asset_get("./resources/ball.obj");
center_sphere->collision_body = collision_body_new_sphere(sphere_new(v3_zero(), 1.0f));
ui_button* framerate = ui_elem_new("framerate", ui_button);
ui_button_move(framerate, v2(10,10));
ui_button_resize(framerate, v2(30,25));
ui_button_set_label(framerate, "FRAMERATE");
ui_button_disable(framerate);
}
void light_set_type(light* l, int type) {
if(type == light_type_directional) {
l->type = light_type_directional;
l->power = 1;
l->falloff = 0;
l->enabled = true;
l->cast_shadows = false;
l->orthographic = true;
l->ortho_width = -1;
l->ortho_height = -1;
l->fov = -1;
l->aspect_ratio = -1;
l->shadow_color = v3_zero();
l->shadow_map_width = -1;
l->shadow_map_height = -1;
} else if (type == light_type_point) {
l->type = light_type_point;
l->power = 5;
l->falloff = 0.5;
l->enabled = true;
l->cast_shadows = false;
l->orthographic = false;
l->ortho_width = -1;
l->ortho_height = -1;
l->fov = -1;
l->aspect_ratio = -1;
l->shadow_color = v3_zero();
l->shadow_map_width = -1;
l->shadow_map_height = -1;
} else if (type == light_type_sun) {
l->type = light_type_sun;
l->position = v3(0,512,0);
l->target = v3(512, 0, 512);
l->ambient_color = v3_mul(v3(0.8, 0.93, 1.0), 0.6);
l->diffuse_color = v3(1.0, 0.937, 0.8);
l->specular_color = v3(1.0, 0.894, 0.811);
l->power = 1.5;
l->falloff = 0;
l->enabled = true;
l->cast_shadows = true;
l->orthographic = true;
l->ortho_width = 128;
l->ortho_height = 128;
l->fov = -1;
l->aspect_ratio = -1;
l->shadow_color = v3_zero();
l->shadow_map_width = 2048;
l->shadow_map_height = 2048;
} else if (type == light_type_spot) {
l->type = light_type_spot;
l->power = 5;
l->falloff = 0.5;
l->enabled = true;
l->cast_shadows = true;
l->orthographic = false;
l->ortho_width = -1;
l->ortho_height = -1;
l->fov = DEFAULT_FOV;
l->aspect_ratio = 1.0;
l->shadow_color = v3_zero();
l->shadow_map_width = 1024;
l->shadow_map_height = 1024;
}
}
void particles_init() {
particle_positions = malloc(sizeof(vector4) * particle_count);
particle_velocities = malloc(sizeof(vector4) * particle_count);
particle_lifetimes = malloc(sizeof(float) * particle_count);
particle_randoms = malloc(sizeof(vector4) * particle_count);
srand(time(NULL));
for(int i = 0; i < particle_count; i++) {
particle_lifetimes[i] = 999;
particle_positions[i] = v4(0,0,0,0);
particle_velocities[i] = v4(0,0,0,0);
float rx = ((float)rand() / RAND_MAX) * 2 - 1;
float ry = ((float)rand() / RAND_MAX) * 2 + 0.5;
float rz = ((float)rand() / RAND_MAX) * 2 - 1;
float rm = (float)rand() / RAND_MAX;
vector3 rand = v3_mul(v3_normalize(v3(rx, ry, rz)), rm * 2);
particle_randoms[i] = v4(rand.x, rand.y, rand.z, 0);
}
glGenBuffers(1, &positions_buffer);
glBindBuffer(GL_ARRAY_BUFFER, positions_buffer);
glBufferData(GL_ARRAY_BUFFER, sizeof(vector4) * particle_count, particle_positions, GL_DYNAMIC_COPY);
glGenBuffers(1, &velocities_buffer);
glBindBuffer(GL_ARRAY_BUFFER, velocities_buffer);
glBufferData(GL_ARRAY_BUFFER, sizeof(vector4) * particle_count, particle_velocities, GL_DYNAMIC_COPY);
glGenBuffers(1, &lifetimes_buffer);
glBindBuffer(GL_ARRAY_BUFFER, lifetimes_buffer);
glBufferData(GL_ARRAY_BUFFER, sizeof(float) * particle_count, particle_lifetimes, GL_DYNAMIC_COPY);
glGenBuffers(1, &randoms_buffer);
glBindBuffer(GL_ARRAY_BUFFER, randoms_buffer);
glBufferData(GL_ARRAY_BUFFER, sizeof(vector4) * particle_count, particle_randoms, GL_DYNAMIC_COPY);
#ifdef OPEN_GL_CPU
#ifndef CPU_ONLY
k_particle_positions = kernel_memory_allocate(sizeof(vector4) * particle_count);
k_particle_velocities = kernel_memory_allocate(sizeof(vector4) * particle_count);
k_particle_lifetimes = kernel_memory_allocate(sizeof(float) * particle_count);
k_particle_randoms = kernel_memory_allocate(sizeof(vector4) * particle_count);
kernel_memory_write(k_particle_positions, sizeof(vector4) * particle_count, particle_positions);
kernel_memory_write(k_particle_velocities, sizeof(vector4) * particle_count, particle_velocities);
kernel_memory_write(k_particle_lifetimes, sizeof(float) * particle_count, particle_lifetimes);
kernel_memory_write(k_particle_randoms, sizeof(vector4) * particle_count, particle_randoms);
#endif
#else
k_particle_positions = kernel_memory_from_glbuffer(positions_buffer);
k_particle_velocities = kernel_memory_from_glbuffer(velocities_buffer);
k_particle_lifetimes = kernel_memory_from_glbuffer(lifetimes_buffer);
k_particle_randoms = kernel_memory_from_glbuffer(randoms_buffer);
#endif
kernel_program* program = asset_get("./kernels/particles.cl");
float max_life = 60.0;
float min_velocity = 0.5;
#ifndef CPU_ONLY
k_update = kernel_program_get_kernel(program, "particle_update");
kernel_set_argument(k_update, 0, sizeof(kernel_memory), &k_particle_positions);
kernel_set_argument(k_update, 1, sizeof(kernel_memory), &k_particle_velocities);
kernel_set_argument(k_update, 2, sizeof(kernel_memory), &k_particle_lifetimes);
kernel_set_argument(k_update, 3, sizeof(kernel_memory), &k_particle_randoms);
kernel_set_argument(k_update, 4, sizeof(cl_float), &max_life);
kernel_set_argument(k_update, 5, sizeof(cl_float), &min_velocity);
kernel_set_argument(k_update, 9, sizeof(cl_int), &particle_count);
#endif
}
void metaballs_init() {
graphics_viewport_set_title("Metaballs");
graphics_viewport_set_dimensions(1280, 720);
graphics_set_multisamples(16);
#ifdef OPEN_GL_CPU
kernels_init_with_cpu();
#else
kernels_init_with_opengl();
#endif
asset_manager_handler(kernel_program, "cl", cl_load_file, kernel_program_delete);
load_folder("./kernels/");
particles_init();
load_folder("./resources/podium/");
load_folder("./resources/particles/");
renderable* r_podium = asset_get("./resources/podium/podium.obj");
renderable_set_material(r_podium, asset_get("./resources/podium/podium.mat"));
static_object* s_podium = entity_new("podium", static_object);
s_podium->renderable = r_podium;
s_podium->position = v3(32, 10, 32);
camera* cam = entity_new("camera", camera);
cam->position = v3(50, 50, 50);
cam->target = v3(32, 20, 32);
light* sun = entity_new("sun", light);
sun->position = v3(50,40,50);
sun->ambient_color = v3(0.5, 0.5, 0.5);
sun->diffuse_color = v3_mul(v3_one(), 2);
sun->specular_color = v3_mul(v3_one(), 5);
light_set_type(sun, light_type_spot);
ui_button* framerate = ui_elem_new("framerate", ui_button);
ui_button_move(framerate, v2(10,10));
ui_button_resize(framerate, v2(30,25));
ui_button_set_label(framerate, "");
ui_button_disable(framerate);
ui_button* score = ui_elem_new("score", ui_button);
ui_button_move(score, v2(50, 10));
#ifdef VOLUME_RENDERER
ui_button_resize(score, v2(125, 25));
ui_button_set_label(score, "Volume Renderer");
#endif
#ifdef MARCHING_CUBES
ui_button_resize(score, v2(120, 25));
ui_button_set_label(score, "Marching Cubes");
#endif
#ifndef VOLUME_RENDERER
#ifndef MARCHING_CUBES
ui_button_resize(score, v2(80, 25));
ui_button_set_label(score, "Particles");
#endif
#endif
ui_button_disable(score);
#ifdef VOLUME_RENDERER
volume_renderer_init();
volume_renderer_set_camera(cam);
volume_renderer_set_light(sun);
#endif
#ifdef MARCHING_CUBES
shadow_mapper_init(sun);
forward_renderer_init();
forward_renderer_set_camera(cam);
forward_renderer_set_shadow_light(sun);
forward_renderer_set_shadow_texture( shadow_mapper_depth_texture() );
forward_renderer_add_light(sun);
marching_cubes_init();
#endif
}
