#include "ingame.h"
#include "title.h"
#include "scene.h"

#include "townengine/game_api.h"


static void ingame_tick(struct state *state) {
    struct scene_ingame *scn = (struct scene_ingame *)state->scene;

    world_drawdef(scn->world);
    player_calc(scn->player);

    static t_camera cam = { .pos = { 32, 0, 1 }, .up = { 0, 1, 0 }, .fov = (float)M_PI_2 };
    cam.target = m_vec_norm(((t_fvec3){ -1, 0, 1 }));

    if (input_is_action_pressed(&ctx.input, "player_left"))
        cam.pos.x -= 0.01f;
    if (input_is_action_pressed(&ctx.input, "player_right"))
        cam.pos.x += 0.01f;
    if (input_is_action_pressed(&ctx.input, "player_jump"))
        cam.pos.z += 0.01f;

    m_sprite(m_set(path,  "/assets/light.png"),
             m_set(rect,  ((t_frect){ 48, 64, 64, 64 })),
             m_opt(color, ((t_color){ 255, 0, 0, 255 })));

    m_sprite(m_set(path,  "/assets/light.png"),
             m_set(rect,  ((t_frect){ 64, 64, 64, 64 })),
             m_opt(color, ((t_color){ 0, 255, 0, 255 })));

    m_sprite(m_set(path,  "/assets/light.png"),
             m_set(rect,  ((t_frect){ 80, 64, 64, 64 })),
             m_opt(color, ((t_color){ 0, 0, 255, 255 })));

    m_sprite(m_set(path,     "/assets/player/baron-walk.png"),
             m_set(rect,     ((t_frect){ 32, 32, 64, 64 })),
             m_opt(rotation, (float)M_PI * 2 * (float)(ctx.tick_count % 64) / 64 ));

    m_sprite(m_set(path,     "/assets/player/baron-walk.png"),
             m_set(rect,     ((t_frect){ 128, 32, 128, 64 })),
             m_opt(rotation, (float)M_PI * 2 * (float)(ctx.tick_count % 64) / 64 ));

    set_camera(&cam);

    for (int y = 64; --y;)
        for (int x = 64; --x;) {
            float d0 = sample_perlin_2d((t_fvec2){x, y}, 0.2, 5) * 8 - 6;
            float d1 = sample_perlin_2d((t_fvec2){x + 1, y}, 0.2, 5) * 8 - 6;
            float d2 = sample_perlin_2d((t_fvec2){x + 1, y - 1}, 0.2, 5) * 8 - 6;
            float d3 = sample_perlin_2d((t_fvec2){x, y - 1}, 0.2, 5) * 8 - 6;

            unfurl_triangle("/assets/grass.gif",
                            (t_fvec3){ x, d0, y },
                            (t_fvec3){ x + 1, d1, y },
                            (t_fvec3){ x, d3, y - 1 },
                            (t_shvec2){ 0, 768 },
                            (t_shvec2){ 1024, 768 },
                            (t_shvec2){ 1024, 0 });

            unfurl_triangle("/assets/grass.gif",
                            (t_fvec3){ x + 1, d1, y },
                            (t_fvec3){ x + 1, d2, y - 1 },
                            (t_fvec3){ x, d3, y - 1 },
                            (t_shvec2){ 1024, 0 },
                            (t_shvec2){ 0, 0 },
                            (t_shvec2){ 0, 768 });
        }
}


static void ingame_end(struct state *state) {
    struct scene_ingame *scn = (struct scene_ingame *)state->scene;
    player_destroy(scn->player);
    world_destroy(scn->world);
    free(state->scene);
}


struct scene *ingame_scene(struct state *state) {
    (void)state;

    struct scene_ingame *new_scene = ccalloc(1, sizeof *new_scene);
    new_scene->base.tick = ingame_tick;
    new_scene->base.end = ingame_end;

    new_scene->world = world_create();
    new_scene->player = player_create(new_scene->world);

    play_audio_ex("music/repeat-test.xm", "soundtrack", (t_play_audio_args){
        .volume = 0.8f,
        .panning = -0.5f,
        .repeat = true,
    });

    return (struct scene *)new_scene;
}