From 3a1f9fe6800ef5fe7bbf1c0a5976720383ba84fe Mon Sep 17 00:00:00 2001
From: Joel Stålnacke <joel@saker.fi>
Date: Mon, 23 Mar 2026 19:50:18 +0200
Subject: Rewrite native code in Odin and use ECS

---
 lib/physics.c | 146 ----------------------------------------------------------
 1 file changed, 146 deletions(-)
 delete mode 100644 lib/physics.c

(limited to 'lib/physics.c')

diff --git a/lib/physics.c b/lib/physics.c
deleted file mode 100644
index 0039bd7..0000000
--- a/lib/physics.c
+++ /dev/null
@@ -1,146 +0,0 @@
-#include <assert.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "common.h"
-#include "player.h"
-#include "snapshot.h"
-#include "types.h"
-
-#include "physics.h"
-
-struct context *
-dp_physics_context_create(int32_t snapshots, int32_t players, int32_t balls)
-{
-	int32_t i, j;
-	struct context *ctx = NULL;
-
-	if (!(ctx = malloc(sizeof(*ctx))))
-		return NULL;
-	memset(ctx, 0, sizeof(*ctx));
-
-	ctx->snapshots_len = snapshots;
-	if (!(ctx->snapshots = malloc(sizeof(*ctx->snapshots) * snapshots)))
-	{
-		free(ctx);
-		return NULL;
-	}
-	memset(ctx->snapshots, 0, sizeof(*ctx->snapshots) * snapshots);
-
-	for (i = 0; i < snapshots; i++)
-	{
-		if (dp_snapshot_init(&ctx->snapshots[i], players, balls) != 0)
-		{
-			for (j = 0; j < i; j++)
-			{
-				dp_snapshot_deinit(&ctx->snapshots[j]);
-			}
-			free(ctx);
-		}
-	}
-
-	return ctx;
-}
-
-void
-dp_physics_context_free(struct context *ctx)
-{
-	int32_t i;
-	if (!ctx)
-		return;
-	if (ctx->snapshots)
-	{
-		for (i = 0; i < ctx->snapshots_len; i++)
-		{
-			dp_snapshot_deinit(&ctx->snapshots[i]);
-		}
-		free(ctx->snapshots);
-	}
-	free(ctx);
-}
-
-struct snapshot *
-dp_physics_context_get_snapshot(struct context *ctx)
-{
-	int32_t i;
-	struct snapshot *s;
-
-	for (i = 0; i < ctx->snapshots_len; i++)
-	{
-		s = &ctx->snapshots[i];
-		if (!s->active)
-		{
-			s->active = true;
-			return s;
-		}
-	}
-	return NULL;
-}
-
-void
-dp_physics_context_return_snapshot(struct context *ctx, struct snapshot *s)
-{
-	int32_t i;
-
-	assert(s->active);
-
-	for (i = 0; i < ctx->snapshots_len; i++)
-	{
-		if (s == &ctx->snapshots[i])
-		{
-			s->active = false;
-		}
-	}
-
-	assert(!s->active);
-}
-
-static void
-dp_physics_tick_player(const struct player *cur, double delta, struct player *next)
-{
-	vec2 acc;
-
-	next->state = cur->state;
-	if (next->state == STATE_REMOVED)
-		next->state = STATE_INACTIVE;
-	if (next->state == STATE_INACTIVE)
-		return;
-
-	acc = dp_player_calculate_acceleration(cur);
-	next->vel = dp_vec2_add(cur->vel, dp_vec2_mul(acc, delta));
-	next->pos = dp_vec2_add(cur->pos, dp_vec2_mul(next->vel, delta));
-}
-
-static void
-dp_physics_tick_ball(const struct ball *cur, double delta, struct ball *next)
-{
-	next->state = cur->state;
-	if (next->state == STATE_REMOVED)
-		next->state = STATE_INACTIVE;
-	if (next->state == STATE_INACTIVE)
-		return;
-
-	next->pos = dp_vec2_add(cur->pos, dp_vec2_mul(cur->vel, delta));
-}
-
-int
-dp_physics_tick(const struct snapshot *cur, double delta, struct snapshot *next)
-{
-	int32_t i;
-
-	assert(cur->active);
-	assert(next->active);
-
-	for (i = 0; i < cur->players_len; i++)
-	{
-		dp_physics_tick_player(&cur->players[i], delta, &next->players[i]);
-	}
-
-	for (i = 0; i < cur->balls_len; i++)
-	{
-		dp_physics_tick_ball(&cur->balls[i], delta, &next->balls[i]);
-	}
-
-	next->tick = cur->tick + 1;
-	return 0;
-}
-- 
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