void sea_render() {
static_object* s_seaplane = entity_get("seaplane");
static_object* s_skydome = entity_get("skydome");
static_object* s_corvette = entity_get("corvette");
light* sun = entity_get("sun");
light* backlight = entity_get("backlight");
shadow_mapper_begin();
shadow_mapper_render_static(s_corvette);
shadow_mapper_end();
forward_renderer_begin();
forward_renderer_render_static(s_skydome);
forward_renderer_render_static(s_seaplane);
forward_renderer_render_static(s_corvette);
physics_object* balls[100];
int num_balls;
entities_get(balls, &num_balls, physics_object);
for(int i = 0; i < num_balls; i++) {
forward_renderer_render_physics(balls[i]);
}
static_object* center_sphere = entity_get("center_sphere");
forward_renderer_render_static(center_sphere);
forward_renderer_render_light(sun);
forward_renderer_render_light(backlight);
forward_renderer_end();
}
static void reset_game() {
/* Set the starting level to demo.level */
current_level = asset_get(P("./levels/demo.level"));
level_score = 0;
level_time = 0.0;
/* New main character entity */
character* main_char = entity_get("main_char");
main_char->position = vec2_mul( vec2_new(20, 20), TILE_SIZE);
main_char->velocity = vec2_zero();
/* We can create multiple entities using a name format string like printf */
entities_new("coin_id_%i", COIN_COUNT, coin);
/* Get an array of pointers to all coin entities */
coin* coins[COIN_COUNT];
entities_get(coins, NULL, coin);
/* Set all the coin initial positions */
for(int i = 0; i < COIN_COUNT; i++) {
coins[i]->position = vec2_mul(coin_positions[i], TILE_SIZE);
}
/* Deactivate victory and new game UI elements */
ui_button* victory = ui_elem_get("victory");
ui_button* new_game = ui_elem_get("new_game");
victory->active = false;
new_game->active = false;
}
void sea_update() {
camera* cam = entity_get("camera");
light* sun = entity_get("sun");
wave_time += frame_time();
static_object* corvette = entity_get("corvette");
corvette->position.y = (sin(wave_time) + 1) / 2;
corvette->rotation = v4_quaternion_pitch(sin(wave_time * 1.123) / 50);
corvette->rotation = v4_quaternion_mul(corvette->rotation, v4_quaternion_yaw(sin(wave_time * 1.254) / 25));
corvette->rotation = v4_quaternion_mul(corvette->rotation, v4_quaternion_roll(sin(wave_time * 1.355) / 100));
static_object* center_sphere = entity_get("center_sphere");
physics_object* balls[100];
int num_balls;
entities_get(balls, &num_balls, physics_object);
for(int i = 0; i < num_balls; i++) {
physics_object_collide_static(balls[i], center_sphere, frame_time());
physics_object_collide_static(balls[i], corvette, frame_time());
physics_object_update(balls[i], frame_time());
}
Uint8 keystate = SDL_GetMouseState(NULL, NULL);
if(keystate & SDL_BUTTON(1)) {
float a1 = -(float)mouse_x * 0.01;
float a2 = (float)mouse_y * 0.01;
cam->position = v3_sub(cam->position, cam->target);
cam->position = m33_mul_v3(m33_rotation_y( a1 ), cam->position );
cam->position = v3_add(cam->position, cam->target);
cam->position = v3_sub(cam->position, cam->target);
vector3 rotation_axis = v3_normalize(v3_cross( v3_sub(cam->position, v3_zero()) , v3(0,1,0) ));
cam->position = m33_mul_v3(m33_rotation_axis_angle(rotation_axis, a2 ), cam->position );
cam->position = v3_add(cam->position, cam->target);
}
if(keystate & SDL_BUTTON(3)) {
sun->position.x += (float)mouse_y / 2;
sun->position.z -= (float)mouse_x / 2;
}
mouse_x = 0;
mouse_y = 0;
ui_button* framerate = ui_elem_get("framerate");
ui_button_set_label(framerate, frame_rate_string());
}
static void collision_detection_coins() {
/* We simply check if the player intersects with the coins */
character* main_char = entity_get("main_char");
vec2 top_left = vec2_add(main_char->position, vec2_new(-TILE_SIZE, -TILE_SIZE));
vec2 bottom_right = vec2_add(main_char->position, vec2_new(TILE_SIZE, TILE_SIZE));
/* Again we collect pointers to all the coin type entities */
int num_coins = 0;
coin* coins[COIN_COUNT];
entities_get(coins, &num_coins, coin);
for(int i = 0; i < num_coins; i++) {
/* Check if they are within the main char bounding box */
if ((coins[i]->position.x > top_left.x) &&
(coins[i]->position.x < bottom_right.x) &&
(coins[i]->position.y > top_left.y) &&
(coins[i]->position.y < bottom_right.y)) {
/* Remove them from the entity manager and delete */
char* coin_name = entity_name(coins[i]);
entity_delete(coin_name);
/* Play a nice twinkle sound */
audio_sound_play(asset_get_as(P("./sounds/coin.wav"), sound), 0);
/* Add some score! */
level_score += 10;
/* Update the ui text */
ui_button* score = ui_elem_get("score");
sprintf(score->label->string, "Score %06i", level_score);
ui_text_draw(score->label);
}
}
ui_button* victory = ui_elem_get("victory");
/* if all the coins are gone and the victory rectangle isn't disaplayed then show it */
if ((entity_type_count(coin) == 0) && (!victory->active)) {
ui_button* victory = ui_elem_get("victory");
ui_button* new_game = ui_elem_get("new_game");
victory->active = true;
new_game->active = true;
}
}
void platformer_render() {
/* Clear the screen to a single color */
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
level_render_background(current_level);
character_render(entity_get_as("main_char", character), camera_position);
/* Get pointers to all the coins for rendering */
coin* coins[COIN_COUNT];
int num_coins = 0;
entities_get(coins, &num_coins, coin);
for(int i = 0; i < num_coins; i++) {
coin_render(coins[i], camera_position);
}
level_render_tiles(current_level, camera_position);
}
void sea_update() {
camera* cam = entity_get("camera");
light* sun = entity_get("sun");
wave_time += frame_time();
static_object* corvette = entity_get("corvette");
corvette->position.y = (sin(wave_time) + 1) / 2;
corvette->rotation = quaternion_pitch(sin(wave_time * 1.123) / 50);
corvette->rotation = quaternion_mul(corvette->rotation, quaternion_yaw(sin(wave_time * 1.254) / 25));
corvette->rotation = quaternion_mul(corvette->rotation, quaternion_roll(sin(wave_time * 1.355) / 100));
static_object* center_sphere = entity_get("center_sphere");
physics_object* balls[100];
int num_balls;
entities_get(balls, &num_balls, physics_object);
for(int i = 0; i < num_balls; i++) {
physics_object_collide_static(balls[i], center_sphere, frame_time());
physics_object_collide_static(balls[i], corvette, frame_time());
physics_object_update(balls[i], frame_time());
}
Uint8 keystate = SDL_GetMouseState(NULL, NULL);
if(keystate & SDL_BUTTON(3)){
sun->position.x += (float)mouse_y / 2;
sun->position.z -= (float)mouse_x / 2;
}
mouse_x = 0;
mouse_y = 0;
ui_button* framerate = ui_elem_get("framerate");
ui_button_set_label(framerate, frame_rate_string());
}