From 61d70551166de46cfda7ee5d6212817859153335 Mon Sep 17 00:00:00 2001
From: quou <quou@disroot.org>
Date: Tue, 1 Oct 2024 20:40:29 +1000
Subject: hud

---
 Makefile             |   4 +-
 hud.c                | 124 +++++++++++++++++++++++++++++++++++++++++++++++++++
 intermediate/hud.bmp | Bin 0 -> 5022 bytes
 obj.h                |   2 +
 world.c              |   1 +
 5 files changed, 130 insertions(+), 1 deletion(-)
 create mode 100644 hud.c
 create mode 100644 intermediate/hud.bmp

diff --git a/Makefile b/Makefile
index ef3f82b..3f107ed 100644
--- a/Makefile
+++ b/Makefile
@@ -48,6 +48,7 @@ sources = \
 	asset.c \
 	deathzone.c \
 	enemy.c \
+	hud.c \
 	map.c \
 	maths.c \
 	memory.c \
@@ -61,10 +62,11 @@ sources = \
 
 image_sources = \
 	$(int_dir)/arms.bmp \
-	$(int_dir)/npc.bmp \
 	$(int_dir)/guy.bmp \
+	$(int_dir)/hud.bmp \
 	$(int_dir)/map.bmp \
 	$(int_dir)/mask.bmp \
+	$(int_dir)/npc.bmp \
 
 anim_sources = \
 	$(int_dir)/demon_fly_left.anm \
diff --git a/hud.c b/hud.c
new file mode 100644
index 0000000..1e014cb
--- /dev/null
+++ b/hud.c
@@ -0,0 +1,124 @@
+#include "asset.h"
+#include "config.h"
+#include "render.h"
+#include "world.h"
+
+const Rect heart_empty_rect  = { 0,  0,  7,  6  };
+const Rect heart_half_rect   = { 7,  0,  7,  6  };
+const Rect heart_full_rect   = { 14, 0,  7,  6  };
+const Rect charge_empty_rect = { 0,  6,  7,  7  };
+const Rect charge_full_rect  = { 7,  6,  7,  7  };
+const Rect background_rect   = { 0,  13, 37, 20 };
+
+const int hud_offset_x = 4;
+const int hud_offset_y = 4;
+
+void hud_clip(Renderer* r) {
+	Rect clip;
+	clip.x = hud_offset_x;
+	clip.y = hud_offset_y;
+	clip.w = background_rect.w;
+	clip.h = background_rect.h;
+	ren_clip(r, &clip);
+}
+
+void hud_background(Renderer* r, const Bitmap* bm) {
+	ren_map(
+		r,
+		hud_offset_x,
+		hud_offset_y,
+		&background_rect,
+		bm
+	);
+}
+
+void hud_hp(Renderer* r, const Bitmap* bm, int h) {
+	const int rmd = h & 1;
+	const int hh = h >> 1;
+	const int hmh = player_health >> 1;
+	int i;
+	int x = hud_offset_x + 3;
+	const int y = hud_offset_y + 3;
+	const int s = heart_empty_rect.w + 1;
+	for (i = 0; i < hh; i++, x += s) {
+		ren_map(
+			r,
+			x,
+			y,
+			&heart_full_rect,
+			bm
+		);
+	}
+	if (rmd) {
+		ren_map(
+			r,
+			x,
+			y,
+			&heart_half_rect,
+			bm
+		);
+		i++;
+		x += s;
+	}
+	for (; i < hmh; i++, x += s) 
+		ren_map(
+			r,
+			x,
+			y,
+			&heart_empty_rect,
+			bm
+		);
+}
+
+void hud_charge(Renderer* r, const Bitmap* bm, int c, int f) {
+	int x = hud_offset_x + 3;
+	const int y = hud_offset_y + heart_empty_rect.h + 4;
+	if (c >= player_special_hits) {
+		int tx, ty;
+		Rect rect;
+		rect.x = x;
+		rect.y = y;
+		rect.w =
+			charge_empty_rect.w *
+			player_special_hits +
+			player_special_hits - 1;
+		rect.h = charge_empty_rect.h;
+		tx = rect.x + (rect.w >> 1) - 13 + ((f & 4) == 0);
+		ty = rect.y + (rect.h >> 1) - 2 + ((f & 6) == 0);
+		ren_text(r, tx, ty, "SPECIAL");
+		ren_rect(r, &rect);
+	} else {
+		const int s = charge_empty_rect.w + 1;
+		int i;
+		for (i = 0; i < c; i++, x += s)
+			ren_map(
+				r,
+				x,
+				y,
+				&charge_full_rect,
+				bm
+			);
+		for (; i < player_special_hits; i++, x += s) {
+			ren_map(
+				r,
+				x,
+				y,
+				&charge_empty_rect,
+				bm
+			);
+		}
+	}
+}
+
+void ren_hud(const World* w, Renderer* r) {
+	const Bitmap* bm = get_bitmap(asset_id_hud_img);
+	const Player* p = &w->player;
+	const int hp = p->hp;
+	const int c = p->charge;
+	hud_clip(r);
+	ren_clear(r);
+	hud_background(r, bm);
+	hud_hp(r, bm, hp);
+	hud_charge(r, bm, c, w->frame);
+	ren_rclip(r);
+}
diff --git a/intermediate/hud.bmp b/intermediate/hud.bmp
new file mode 100644
index 0000000..c1850bd
Binary files /dev/null and b/intermediate/hud.bmp differ
diff --git a/obj.h b/obj.h
index a74b015..c7d9589 100644
--- a/obj.h
+++ b/obj.h
@@ -79,4 +79,6 @@ void init_deathzone(
 );
 int update_deathzone(Deathzone* d);
 
+void ren_hud(const struct World* w, struct Renderer* r);
+
 #endif
diff --git a/world.c b/world.c
index 98950f1..18cc6cd 100644
--- a/world.c
+++ b/world.c
@@ -75,4 +75,5 @@ void ren_world(const World* w, struct Renderer* r) {
 		ren_particle(&w->particles[i], r);
 	for (i = 0; i < w->enemy_count; i++)
 		ren_enemy(&w->enemies[i], r);
+	ren_hud(w, r);
 }
-- 
cgit v1.2.3-54-g00ecf