Add moon surface intro level with asteroid hazards and unarmed mechanics
Introduce moon01.lvl as the starting level — a pure jump-and-run intro with no gun and no enemies, just platforming over gaps and dodging falling asteroids. The player picks up their gun upon transitioning to level01. New features: - Moon tileset and PARALLAX_STYLE_MOON with crater terrain backgrounds - Asteroid entity (ENT_ASTEROID): falls from sky, damages on contact, explodes on ground with particles, respawns after delay - PLAYER_UNARMED directive disables gun for the level - Pit rescue mechanic: falling costs 1 HP and auto-dashes upward - Gun powerup entity type for future armed-pickup levels - Segment-based procedural level generator with themed rooms - Extended editor with entity palette and improved tile cycling - Web shell improvements for Emscripten builds
This commit is contained in:
Thomas
@@ -1,9 +1,11 @@
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#include "game/hazards.h"
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#include "game/player.h"
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#include "game/sprites.h"
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#include "game/projectile.h"
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#include "engine/physics.h"
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#include "engine/renderer.h"
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#include "engine/particle.h"
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#include "engine/audio.h"
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#include <stdlib.h>
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#include <math.h>
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@@ -597,3 +599,203 @@ Entity *force_field_spawn(EntityManager *em, Vec2 pos) {
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return e;
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}
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/* ════════════════════════════════════════════════════
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* ASTEROID — Falling space rock
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* ════════════════════════════════════════════════════ */
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static EntityManager *s_asteroid_em = NULL;
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static Sound s_sfx_asteroid_impact;
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static bool s_asteroid_sfx_loaded = false;
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#ifndef M_PI
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#define M_PI 3.14159265358979323846
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#endif
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static void asteroid_update(Entity *self, float dt, const Tilemap *map) {
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AsteroidData *ad = (AsteroidData *)self->data;
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if (!ad) return;
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/* Initial delay before first fall */
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if (ad->start_delay > 0) {
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ad->start_delay -= dt;
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self->body.pos.y = -20.0f; /* hide off-screen */
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return;
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}
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if (!ad->falling) {
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/* Waiting to respawn */
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ad->respawn_timer -= dt;
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if (ad->respawn_timer <= 0) {
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/* Reset to spawn position and start falling */
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self->body.pos = ad->spawn_pos;
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ad->falling = true;
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ad->trail_timer = 0;
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ad->fall_speed = ASTEROID_FALL_SPEED;
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}
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return;
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}
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/* Accelerate while falling (gravity-like) */
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ad->fall_speed += 200.0f * dt;
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self->body.pos.y += ad->fall_speed * dt;
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/* Tumble animation */
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animation_update(&self->anim, dt);
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/* Smoke trail particles */
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ad->trail_timer -= dt;
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if (ad->trail_timer <= 0) {
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ad->trail_timer = 0.04f;
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Vec2 center = vec2(
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self->body.pos.x + self->body.size.x * 0.5f,
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self->body.pos.y
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);
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ParticleBurst trail = {
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.origin = center,
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.count = 2,
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.speed_min = 5.0f,
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.speed_max = 20.0f,
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.life_min = 0.2f,
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.life_max = 0.5f,
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.size_min = 1.0f,
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.size_max = 2.0f,
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.spread = 0.5f,
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.direction = -(float)M_PI / 2.0f, /* upward */
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.drag = 2.0f,
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.gravity_scale = 0.0f,
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.color = {140, 110, 80, 180},
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.color_vary = true,
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};
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particle_emit(&trail);
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}
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/* Check player collision */
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Entity *player = find_player(s_asteroid_em);
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if (player && !(player->flags & ENTITY_INVINCIBLE) &&
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!(player->flags & ENTITY_DEAD)) {
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if (physics_overlap(&self->body, &player->body)) {
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player->health -= ASTEROID_DAMAGE;
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if (player->health <= 0) {
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player->health = 0;
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player->flags |= ENTITY_DEAD;
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} else {
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/* Grant invincibility frames */
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PlayerData *ppd = (PlayerData *)player->data;
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if (ppd) {
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ppd->inv_timer = PLAYER_INV_TIME;
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player->flags |= ENTITY_INVINCIBLE;
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}
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/* Knockback downward and away */
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float knock_dir = (player->body.pos.x < self->body.pos.x)
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? -1.0f : 1.0f;
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player->body.vel.x = knock_dir * 120.0f;
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player->body.vel.y = 100.0f;
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}
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Vec2 hit_pos = vec2(
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player->body.pos.x + player->body.size.x * 0.5f,
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player->body.pos.y + player->body.size.y * 0.5f
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);
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particle_emit_spark(hit_pos, (SDL_Color){180, 140, 80, 255});
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if (s_asteroid_sfx_loaded) {
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audio_play_sound(s_sfx_asteroid_impact, 80);
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}
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}
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}
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/* Check ground collision */
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int tx = world_to_tile(self->body.pos.x + self->body.size.x * 0.5f);
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int ty = world_to_tile(self->body.pos.y + self->body.size.y);
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bool hit_ground = tilemap_is_solid(map, tx, ty);
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/* Also despawn if far below level */
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float level_bottom = (float)(map->height * TILE_SIZE) + 32.0f;
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if (hit_ground || self->body.pos.y > level_bottom) {
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/* Impact effect */
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Vec2 impact_pos = vec2(
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self->body.pos.x + self->body.size.x * 0.5f,
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self->body.pos.y + self->body.size.y
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);
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particle_emit_death_puff(impact_pos, (SDL_Color){140, 110, 80, 255});
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if (s_asteroid_sfx_loaded) {
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audio_play_sound(s_sfx_asteroid_impact, 60);
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}
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/* Hide and start respawn timer */
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ad->falling = false;
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ad->respawn_timer = ASTEROID_RESPAWN;
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self->body.pos.y = -100.0f; /* hide off-screen */
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}
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}
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static void asteroid_render(Entity *self, const Camera *cam) {
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(void)cam;
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AsteroidData *ad = (AsteroidData *)self->data;
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if (!ad || !ad->falling) return;
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if (!g_spritesheet || !self->anim.def) return;
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SDL_Rect src = animation_current_rect(&self->anim);
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Body *body = &self->body;
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float draw_x = body->pos.x + body->size.x * 0.5f - SPRITE_CELL * 0.5f;
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float draw_y = body->pos.y + body->size.y * 0.5f - SPRITE_CELL * 0.5f;
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Sprite spr = {
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.texture = g_spritesheet,
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.src = src,
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.pos = vec2(draw_x, draw_y),
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.size = vec2(SPRITE_CELL, SPRITE_CELL),
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.flip_x = false,
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.flip_y = false,
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.layer = LAYER_ENTITIES,
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.alpha = 255,
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};
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renderer_submit(&spr);
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}
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static void asteroid_destroy(Entity *self) {
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free(self->data);
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self->data = NULL;
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}
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void asteroid_register(EntityManager *em) {
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entity_register(em, ENT_ASTEROID, asteroid_update, asteroid_render, asteroid_destroy);
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s_asteroid_em = em;
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if (!s_asteroid_sfx_loaded) {
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s_sfx_asteroid_impact = audio_load_sound("assets/sounds/hitHurt.wav");
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s_asteroid_sfx_loaded = true;
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}
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}
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Entity *asteroid_spawn(EntityManager *em, Vec2 pos) {
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Entity *e = entity_spawn(em, ENT_ASTEROID, pos);
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if (!e) return NULL;
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e->body.size = vec2(ASTEROID_WIDTH, ASTEROID_HEIGHT);
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e->body.gravity_scale = 0.0f; /* we handle movement manually */
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e->health = 9999;
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e->max_health = 9999;
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e->flags |= ENTITY_INVINCIBLE;
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e->damage = ASTEROID_DAMAGE;
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AsteroidData *ad = calloc(1, sizeof(AsteroidData));
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ad->spawn_pos = pos;
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ad->falling = true;
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ad->fall_speed = ASTEROID_FALL_SPEED;
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ad->trail_timer = 0;
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ad->respawn_timer = 0;
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/* Stagger start times based on spawn position to avoid all falling at once */
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ad->start_delay = (pos.x * 0.013f + pos.y * 0.007f);
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ad->start_delay = ad->start_delay - (float)(int)ad->start_delay; /* frac part */
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ad->start_delay *= 3.0f; /* 0-3s stagger */
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e->data = ad;
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animation_set(&e->anim, &anim_asteroid);
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return e;
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}
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