From 5f0603d171fc0411f46548bf4b2aa219693139a2 Mon Sep 17 00:00:00 2001
From: esquizo <esquizo+noreply@esquizo.net>
Date: Thu, 21 May 2026 20:45:02 -0300
Subject: libphysics: feito o pipeline de resolução de colisões
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---
 libphysics/tick.c | 84 +++++++++++++++++++++++++++++++------------------------
 1 file changed, 48 insertions(+), 36 deletions(-)

(limited to 'libphysics/tick.c')

diff --git a/libphysics/tick.c b/libphysics/tick.c
index 23f7fa0..a875915 100644
--- a/libphysics/tick.c
+++ b/libphysics/tick.c
@@ -4,7 +4,13 @@
 
 #include "dat.h"
 
-#define PHX_TICK_TIME (1.0 / 480.0)
+#define TILE_SIZE 16
+#define TEST_BUFFER_SIZE 0x10000
+
+typedef struct TestCollision TestCollision;
+struct TestCollision {
+	BodyID a, b;
+};
 
 static void tick(void);
 static void mapcollision(Body *);
@@ -13,7 +19,11 @@ static void bodycollision(Body *);
 static void bodycollisionmap(Body *);
 static void bodycollisionmapsub(Body *, BlockmapNode *);
 
-#define TILE_SIZE 16
+static void enqueuetest(TestCollision *t);
+static void resolve(void);
+
+static TestCollision testcollision[TEST_BUFFER_SIZE];
+static int testcollisioncount;
 
 void
 phxtick(float delta)
@@ -74,10 +84,16 @@ tick(void)
 		Body *b = phxbodypool + i;
 		if(!b->active)
 			continue;
-
 		mapcollision(b);
+	}
+
+	for(int i = 0; i < phxbodypoolsize; i++) {
+		Body *b = phxbodypool + i;
+		if(!b->active)
+			continue;
 		bodycollisionmap(b);
 	}
+	resolve();
 
 	for(int i = 0; i < phxbodypoolsize; i++) {
 		Body *b = phxbodypool + i;
@@ -134,34 +150,6 @@ mapcollision(Body *a)
 		}
 }
 
-void
-bodycollision(Body *a)
-{
-	CollisionEvent event;
-	for(Body *b = a + 1; b < (a + phxbodypoolsize); b++) {
-		if(!b->active)
-			continue;
-
-		if(phxaabbcheck(a, b)) {
-			float p[2], n[2], rvel[2], j;
-			phxaabbresolv(a, b, p, n);
-
-			vec2_sub(rvel, a->vel, b->vel);
-			j = vec2_dot(rvel, n);
-
-			vec2_sub_scaled(a->vel, a->vel, n,  0.5);
-			vec2_sub_scaled(b->vel, b->vel, n, -0.5);
-
-			vec2_sub_scaled(a->pos, a->pos, p,  0.5);
-			vec2_sub_scaled(b->pos, b->pos, p, -0.5);
-
-			event.body1 = a - phxbodypool;
-			event.body2 = b - phxbodypool;
-			phxenqevent(&event);
-		}
-	}
-}
-
 void
 bodycollisionmap(Body *a)
 {
@@ -177,9 +165,34 @@ bodycollisionmap(Body *a)
 void
 bodycollisionmapsub(Body *a, BlockmapNode *n)
 {
-	CollisionEvent event;
 	while(n) {
 		Body *b = phxbodypool + n->id;
+		enqueuetest(&(TestCollision) {
+			.a = a - phxbodypool,
+			.b = b - phxbodypool
+		});
+		n = n->next;
+	}
+}
+
+void
+enqueuetest(TestCollision *t)
+{
+	testcollision[testcollisioncount++] = *t;
+	if(testcollisioncount >= TEST_BUFFER_SIZE)
+		resolve();
+}
+
+void
+resolve(void)
+{
+	CollisionEvent event;
+
+	for(int i = 0; i < testcollisioncount; i++) {
+		TestCollision *c = testcollision + i;
+		Body *a = c->a + phxbodypool;
+		Body *b = c->b + phxbodypool;
+
 		if(a < b && phxaabbcheck(a, b)) {
 			float p[2], n[2], rvel[2], j;
 			phxaabbresolv(a, b, p, n);
@@ -193,11 +206,10 @@ bodycollisionmapsub(Body *a, BlockmapNode *n)
 			vec2_sub_scaled(a->pos, a->pos, p,  0.5);
 			vec2_sub_scaled(b->pos, b->pos, p, -0.5);
 
-			event.body1 = a - phxbodypool;
-			event.body2 = b - phxbodypool;
+			event.body1 = c->a;
+			event.body2 = c->b;
 			phxenqevent(&event);
 		}
-
-		n = n->next;
 	}
+	testcollisioncount = 0;
 }
-- 
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