diff options
Diffstat (limited to 'setup.cpp')
| -rw-r--r-- | setup.cpp | 56 |
1 files changed, 52 insertions, 4 deletions
@@ -2,7 +2,7 @@ #define SETUP_MIN_X 1.0f #define SETUP_MAX_X 10.0f #define SETUP_MIN_Y 1.0f -#define SETUP_MAX_Y 10.0f +#define SETUP_MAX_Y 15.0f static v2 setup_rand_point(void) { return V2( @@ -10,9 +10,7 @@ static v2 setup_rand_point(void) { rand_uniform(SETUP_MIN_Y, SETUP_MAX_Y) ); } - -#define PLATFORM_MOVE_CHANCE 0.5f // chance that the platform will be a moving one -#define PLATFORM_ROTATE_CHANCE 0.5f // chance that the platform will be a rotating one (platforms can be moving and rotating) +#if 0 static void setup_random(Setup *setup, float cost_allowed) { // how much "money" we have to spend float cost_left = cost_allowed; @@ -57,6 +55,38 @@ static void setup_random(Setup *setup, float cost_allowed) { } assert(cost_left >= 0); } +#endif + +static void setup_random(State *state, Setup *setup) { + u32 i, j, t; + u32 const max_failed_attempts = 100; + Platform *platforms = setup->platforms; + for (i = 0; i < MAX_PLATFORMS; ++i) { + for (t = 0; t < max_failed_attempts; ++t) { + Platform *platform = &platforms[i]; + memset(platform, 0, sizeof *platform); + platform_random(platform); + Rect bbox = platform_bounding_box(platform); + for (j = 0; j < i; ++j) { + Rect bbox_other = platform_bounding_box(&platforms[j]); + if (rects_intersect(bbox, bbox_other)) { + break; + } + } + if (bbox.pos.x > state->left_x // ensure that platform is to the right of left wall + && j == i) { + // we successfully placed a platform! + break; + } + } + if (t == max_failed_attempts) { + // if we failed enough attempts to make a non-intersecting platform, give up + break; + } + } + + setup->nplatforms = i; +} // make this setup the active one static void setup_use(State *state, Setup *setup) { @@ -172,3 +202,21 @@ static bool setup_read_from_file(Setup *setup, char const *filename) { } } +// meant for use with qsort, to sort by descending score +static int setup_compare_scores(void const *a_void, void const *b_void) { + Setup const *a = (Setup const *)a_void, *b = (Setup const *)b_void; + if (a->score > b->score) { + return -1; + } else if (a->score < b->score) { + return +1; + } + return 0; +} + +static void setup_mutate(State *state, Setup *setup, float mutation_rate) { + for (Platform *platform = setup->platforms, *end = platform + setup->nplatforms; + platform != end; ++platform) { + if (randf() < mutation_rate) + platform_mutate(state, setup, platform); + } +} |