From f405c37daccac93323081216b2484da498e2fecf Mon Sep 17 00:00:00 2001
From: Paweł Redman <pawel.redman@gmail.com>
Date: Thu, 12 Apr 2018 21:27:07 +0200
Subject: Tracing vs entities, bullets can now hit.

---
 src/common.hpp            |  4 ++--
 src/game/unit_soldier.cpp | 13 ++++++++++---
 src/world.cpp             | 35 +++++++++++++++++++++++++++++------
 3 files changed, 41 insertions(+), 11 deletions(-)

(limited to 'src')

diff --git a/src/common.hpp b/src/common.hpp
index bf4482f..45782f7 100644
--- a/src/common.hpp
+++ b/src/common.hpp
@@ -162,9 +162,9 @@ namespace world {
 
 		bool test_rect(const cmodel_t *cmodel, const entity_t *ignore);
 
-		trace_t ray_v_ents(v2f_t start, v2f_t end, cflags_t cflags, world::entity_t *ignore);
+		trace_t ray_v_ents(v2f_t start, v2f_t end, cflags_t cflags, const entity_t *ignore);
 		trace_t ray_v_tiles(v2f_t start, v2f_t end, cflags_t cflags);
-		trace_t ray_v_all(v2f_t start, v2f_t end, cflags_t cflags, world::entity_t *ignore);
+		trace_t ray_v_all(v2f_t start, v2f_t end, cflags_t cflags, const entity_t *ignore);
 
 		struct {
 			size_t sectors = 0, tiles = 0;
diff --git a/src/game/unit_soldier.cpp b/src/game/unit_soldier.cpp
index e44e8a2..b3e93d1 100644
--- a/src/game/unit_soldier.cpp
+++ b/src/game/unit_soldier.cpp
@@ -84,7 +84,7 @@ void unit_soldier_t::shoot(v2f_t aim)
 
 	end = x + (aim - x).norm() * 40;
 
-	trace = world->ray_v_all(x, end, CF_SOLID, this);
+	trace = world->ray_v_all(x, end, CF_SOLID|CF_BODY|CF_BODY_SMALL, this);
 
 	muzzle_point = x + v2f_t(0, -1.0f);
 
@@ -95,8 +95,15 @@ void unit_soldier_t::shoot(v2f_t aim)
 	flash->place(&game->world);
 
 	last_attack = game->now;
+
 	assets::soldier.fire.play_3d(x);
-	//target->damage(3, this); FIXME
+
+	if (trace.hit && trace.ent) {
+		if (trace.ent->type == ET_UNIT) {
+			unit_t *unit = dynamic_cast<unit_t*>(trace.ent);
+			unit->damage(3, this);
+		}
+	}
 }
 
 void unit_soldier_t::target_and_attack(void)
@@ -127,7 +134,7 @@ skip_targetting:
 	if (last_attack + game->prng.next_float(1.4f, 1.6f) > game->now)
 		return;
 
-	shoot(spread_aim(aim, 0.2, &game->prng));
+	shoot(spread_aim(aim, 0.01, &game->prng));
 }
 
 void unit_soldier_t::on_think(void)
diff --git a/src/world.cpp b/src/world.cpp
index 05519f0..d09001c 100644
--- a/src/world.cpp
+++ b/src/world.cpp
@@ -391,12 +391,34 @@ out_no_hit:
 
 
 trace_t world_t::ray_v_ents(v2f_t start, v2f_t end, cflags_t cflags,
-                            world::entity_t *ignore)
+                            const entity_t *ignore)
 {
-	// TODO
-	trace_t res;
-	res.hit = false;
-	return res;
+	trace_t best;
+	rectf_t rect;
+
+	best.hit = false;
+	best.frac = 2.0f;
+
+	rect = rectf_t(start, end).norm();
+
+	for (entity_t *ent : get_entities(rect, cflags)) {
+		trace_t trace;
+
+		if (ent == ignore)
+			continue;
+
+		trace = ray_v_rect(start, end, ent->cmodel.bounds);
+		if (!trace.hit)
+			continue;
+
+		if (trace.frac < best.frac) {
+			best = trace;
+			best.tile = nullptr;
+			best.ent = ent;
+		}
+	}
+
+	return best;
 }
 
 
@@ -442,6 +464,7 @@ trace_t world_t::ray_v_tiles(v2f_t start, v2f_t end, cflags_t cflags)
 			res.hit = true;
 			res.end = x ^ transforms[quad];
 			res.frac = (x - start).len() / (end - start).len();
+			res.ent = nullptr;
 			res.tile = tile;
 			return res;
 		}
@@ -467,7 +490,7 @@ trace_t world_t::ray_v_tiles(v2f_t start, v2f_t end, cflags_t cflags)
 }
 
 trace_t world_t::ray_v_all(v2f_t start, v2f_t end, cflags_t cflags,
-                           world::entity_t *ignore)
+                          const entity_t *ignore)
 {
 	trace_t v_tiles, v_ents;
 
-- 
cgit