BosonX/src/generator/gen2.cpp

#include "../generator.h"
#include "../level.h"
#include "../util.h"
#include <stdlib.h>

/* Geometric parameters */
#define G_PLATFORM_LEN           num(2.5)
#define G_PLATFORM_SPC           num(0.5)
#define G_PLATFORM_LEN_INITIAL   num(6.0)
/* Probabilities */
#define P_ASCF_RED               num(0.2)

AcceleronGenerator::AcceleronGenerator():
    m_checkerboard_carver{3}
{
    srand(123456);
    m_initial = true;
    m_z = 0.0;
    m_phase = 0;

    int faces[3] = { 0, 4, 8 };
    m_checkerboard_carver.set_faces(faces);
    m_checkerboard_carver.set_noskip(true);
    m_checkerboard_carver.set_checkerboard(true);
}

/* Generates an ascending funnel up to a long red platform on face #4, in the
   following shape.

    0123456789
    #.#.#.#.#. [h=0]
    .#.#.#.#.. [h=1]
    ..#.#.#... [h=2]
    ...#.#.... [h=3]
    ....#..... [h=4]
    ....##.... [h=5]
    ...##..... [h=6]
    ....##.... [h=7]
    ....R..... [h=8]
    ....|.....
    ....|.....
    ....|.....
    ...B...... [h=5]
    ...|.#.... [h=4]
    ...|.|....
    ....#..... [h=1]

   Returns updated z. */
static num generate_ascending_funnel(struct level *level, num z)
{
    /* Ascending funnel */
    for(int i = 0; i < 5; i++) {
        /* Generate 5-i platforms starting at i, spaced by 2 */
        for(int j = 0; j < 5-i; j++) {
            struct platform p;
            p.type = PLATFORM_WHITE;
            p.face = i + 2*j;
            p.z = z;
            p.length = G_PLATFORM_LEN;
            p.height = i;

            if(num_rand() <= P_ASCF_RED)
                p.type = PLATFORM_RED;

            level->platform_buffer.push_back(p);
        }
        z += G_PLATFORM_LEN + G_PLATFORM_SPC;
    }

    /* Steps */
    for(int i = 0; i < 3; i++) {
        struct platform p;
        p.type = PLATFORM_WHITE;
        p.face = 4;
        p.z = z;
        p.length = G_PLATFORM_LEN;
        p.height = i + 5;
        level->platform_buffer.push_back(p);

        p.face = (i & 1) ? 3 : 5;
        level->platform_buffer.push_back(p);

        z += G_PLATFORM_LEN + G_PLATFORM_SPC;
    }

    /* Overlapping red platform and blue/white neighbors */
    struct platform p;
    p.type = PLATFORM_RED;
    p.face = 4;
    p.z = z;
    p.length = G_PLATFORM_LEN * 3;
    p.height = 8;
    level->platform_buffer.push_back(p);
    z += G_PLATFORM_LEN * 3 + G_PLATFORM_SPC;

    p.type = PLATFORM_BLUE;
    p.face = 3;
    p.z = z;
    p.length = G_PLATFORM_LEN * 3;
    p.height = 5;
    level->platform_buffer.push_back(p);

    p.type = PLATFORM_WHITE;
    p.face = 5;
    p.z = z + G_PLATFORM_LEN;
    p.length = G_PLATFORM_LEN * 2;
    p.height = 4;
    level->platform_buffer.push_back(p);

    z += G_PLATFORM_LEN * 3 + G_PLATFORM_SPC;

    /* Exit platform */
    p.type = PLATFORM_WHITE;
    p.face = 4;
    p.z = z;
    p.length = G_PLATFORM_LEN;
    p.height = 0;
    level->platform_buffer.push_back(p);

    z += G_PLATFORM_LEN + G_PLATFORM_SPC;
    return z;
}

void AcceleronGenerator::generate(struct level *level)
{
    /* Friendly platform at start of level */
    if(m_initial) {
        struct platform p;
        p.type = PLATFORM_WHITE;
        p.face = 0;
        p.z = m_z;
        p.length = G_PLATFORM_LEN_INITIAL;
        p.height = 0;

        level->platform_buffer.push_back(p);
        m_z += p.length;
        m_initial = false;
    }

    /* Phase #0: Ascending funnel and long/tight red platform */
    if(m_phase == 0) {
        m_z = generate_ascending_funnel(level, m_z);
        m_checkerboard_carver.force_to_match(4);
        m_phase = 1;
    }
    /* Phase #1: Checkerboard random paths */
    else if(m_phase == 1) {
        int length = 4 + 2 * (rand() % 2);
        for(int i = 0; i < length; i++) {
            m_checkerboard_carver.next(level, m_z, G_PLATFORM_LEN);
            m_z += G_PLATFORM_LEN + G_PLATFORM_SPC;
        }
        m_phase = 0;
    }

    /* Phase #1: Almost-full tunnel with random holes? */

    /* Phase #2: Path with spacing + random onlookers */

    /* Phase #3: Full + odd + even tunnel combination leading into #0 */


    /* Phase #5: Obstacles
       - ##.##.#.#.
       - .##.##.#.#
       - ..#..#..#.
       - .#..#..#.. */

}