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engine-c: denser mid-air tracers + artillery/missile arcs

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local-model/engine-L2-grok-4.5 2026-09-19 17:42:57 +02:00
parent 1ef6df4ce5
commit b4d3388701
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7 changed files with 187 additions and 76 deletions
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51
engine-c/src/snapshot.c
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@ -925,28 +925,43 @@ void snapshot_capture(Game *g, const char *path) {
draw_unit(u, sx, sy);
}
/* projectiles — bright tracers / shells with streak tails (KKND2-like) */
/* projectiles — lofted shell/missile sample parabola; else linear streak */
for (int i = 0; i < g->bullet_count; i++) {
Bullet *p = &g->bullets[i];
int sx = (int)(p->x - camx), sy = (int)(p->y - camy);
float dx = p->tx - p->x, dy = p->ty - p->y;
float d = sqrtf(dx * dx + dy * dy);
if (d > 1.0f) {
float ux = dx / d, uy = dy / d;
int len = (p->kind == 2) ? 32 : (p->kind == 3) ? 24
: (p->kind == 1) ? 20 : 14;
int lofted = (p->kind == 1 || p->kind == 3) && p->loft > 0.5f;
if (lofted) {
int len = (p->kind == 3) ? 28 : 22;
float step = 0.018f;
for (int t = 1; t <= len; t++) {
int tx = sx - (int)(ux * (float)t * 0.75f);
int ty = sy - (int)(uy * (float)t * 0.75f);
uint8_t fade = (uint8_t)(255 - t * 9);
if (p->kind == 2) {
/* laser beam: cyan→magenta streak */
disc(tx, ty, (t < 3) ? 2 : 1, fade, 80, 255);
px(tx, ty, 220, 180, 255);
} else if (p->kind == 3) {
disc(tx, ty, (t < 4) ? 2 : 1, 255, (uint8_t)(120 - t * 4), 30);
} else {
disc(tx, ty, 1, 255, (uint8_t)(200 - t * 8), 50);
float tp = p->prog - step * (float)t;
if (tp < 0.0f) break;
float wx = p->ox + (p->tx - p->ox) * tp;
float wy = p->oy + (p->ty - p->oy) * tp
- p->loft * 4.0f * tp * (1.0f - tp);
int tx = (int)(wx - camx);
int ty = (int)(wy - camy);
if (p->kind == 3)
disc(tx, ty, (t < 4) ? 2 : 1, 255, (uint8_t)(120 - t * 3), 30);
else
disc(tx, ty, 1, 255, (uint8_t)(200 - t * 7), 50);
}
} else {
float dx = p->tx - p->x, dy = p->ty - p->y;
float d = sqrtf(dx * dx + dy * dy);
if (d > 1.0f) {
float ux = dx / d, uy = dy / d;
int len = (p->kind == 2) ? 32 : 14;
for (int t = 1; t <= len; t++) {
int tx = sx - (int)(ux * (float)t * 0.75f);
int ty = sy - (int)(uy * (float)t * 0.75f);
uint8_t fade = (uint8_t)(255 - t * 9);
if (p->kind == 2) {
disc(tx, ty, (t < 3) ? 2 : 1, fade, 80, 255);
px(tx, ty, 220, 180, 255);
} else {
disc(tx, ty, 1, 255, (uint8_t)(200 - t * 8), 50);
}
}
}
}