From 3432efe82387a6a4145d087c4af1a354d4063901 Mon Sep 17 00:00:00 2001
From: Elias Fleckenstein <eliasfleckenstein@web.de>
Date: Mon, 14 Jun 2021 10:30:45 +0200
Subject: [PATCH] Add charged hits

---
 plugins/recharge/Makefile         |  4 ++
 plugins/recharge/dependencies.txt |  1 +
 plugins/recharge/recharge.c       | 72 +++++++++++++++++++++++++++++++
 plugins/recharge/recharge.h       |  9 ++++
 plugins/sword/Makefile            |  2 +-
 plugins/sword/dependencies.txt    |  1 +
 plugins/sword/sword.c             |  6 +++
 7 files changed, 94 insertions(+), 1 deletion(-)
 create mode 100644 plugins/recharge/Makefile
 create mode 100644 plugins/recharge/dependencies.txt
 create mode 100644 plugins/recharge/recharge.c
 create mode 100644 plugins/recharge/recharge.h

diff --git a/plugins/recharge/Makefile b/plugins/recharge/Makefile
new file mode 100644
index 0000000..cb6e05e
--- /dev/null
+++ b/plugins/recharge/Makefile
@@ -0,0 +1,4 @@
+plugins/recharge/recharge.so: plugins/recharge/recharge.c plugins/recharge/recharge.h plugins/game/game.h
+	cc -g -shared -fpic -o plugins/recharge/recharge.so plugins/recharge/recharge.c
+
+PLUGINS := ${PLUGINS} plugins/recharge/recharge.so
diff --git a/plugins/recharge/dependencies.txt b/plugins/recharge/dependencies.txt
new file mode 100644
index 0000000..dc22e61
--- /dev/null
+++ b/plugins/recharge/dependencies.txt
@@ -0,0 +1 @@
+game
diff --git a/plugins/recharge/recharge.c b/plugins/recharge/recharge.c
new file mode 100644
index 0000000..37d0207
--- /dev/null
+++ b/plugins/recharge/recharge.c
@@ -0,0 +1,72 @@
+#include <stdio.h>
+#include "recharge.h"
+#include "../game/game.h"
+
+static double recharge_full_timer = 0.0;
+static double recharge_timer = 0.0;
+
+static const char *recharge_icon;
+
+bool is_charged()
+{
+	return recharge_timer <= 0;
+}
+
+void recharge(double timer, const char *icon)
+{
+	recharge_full_timer = recharge_timer = timer;
+	recharge_icon = icon;
+}
+
+static void render_recharge_meter(struct winsize ws)
+{
+	int y = ws.ws_row - 1;
+	int x = ws.ws_col - 14;
+
+	if (recharge_timer <= 0.0)
+		return;
+
+	double frac = (recharge_full_timer - recharge_timer) / recharge_full_timer;
+
+	printf("\e[%d;%dH", y, x);
+
+	printf("%s[", recharge_icon);
+
+	struct color color = {
+		(1.0 - frac) * 255,
+		frac * 255,
+		0,
+	};
+
+	set_color(color, true);
+
+	char bar[11];
+	sprintf(bar, "%9d%%", (int) (frac * 100));
+
+	int bars = frac * 10;
+
+	for (int i = 0; i < 10; i++) {
+		if (i == bars)
+			set_color(black, true);
+		printf("%c", bar[i]);
+	}
+
+	set_color(black, true);
+
+	printf("]");
+}
+
+static void recharge_globalstep(double dtime)
+{
+	if (recharge_timer > 0.0)
+		recharge_timer -= dtime;
+}
+
+__attribute__ ((constructor)) static void init()
+{
+	register_render_component(&render_recharge_meter);
+	register_globalstep((struct globalstep) {
+		.run_if_dead = false,
+		.callback = &recharge_globalstep,
+	});
+}
diff --git a/plugins/recharge/recharge.h b/plugins/recharge/recharge.h
new file mode 100644
index 0000000..7c0dc88
--- /dev/null
+++ b/plugins/recharge/recharge.h
@@ -0,0 +1,9 @@
+#ifndef _RECHARGE_H_
+#define _RECHARGE_H_
+
+#include <stdbool.h>
+
+bool is_charged();
+void recharge(double timer, const char *icon);
+
+#endif
diff --git a/plugins/sword/Makefile b/plugins/sword/Makefile
index ee28952..034ba74 100644
--- a/plugins/sword/Makefile
+++ b/plugins/sword/Makefile
@@ -1,4 +1,4 @@
-plugins/sword/sword.so: plugins/sword/sword.c plugins/game/game.h plugins/movement/movement.h plugins/inventory/inventory.h
+plugins/sword/sword.so: plugins/sword/sword.c plugins/game/game.h plugins/movement/movement.h plugins/inventory/inventory.h plugins/recharge/recharge.h
 	cc -g -shared -fpic -o plugins/sword/sword.so plugins/sword/sword.c
 
 PLUGINS := ${PLUGINS} plugins/sword/sword.so
diff --git a/plugins/sword/dependencies.txt b/plugins/sword/dependencies.txt
index b19003b..ad140f4 100644
--- a/plugins/sword/dependencies.txt
+++ b/plugins/sword/dependencies.txt
@@ -1,3 +1,4 @@
 game
 movement
 inventory
+recharge
diff --git a/plugins/sword/sword.c b/plugins/sword/sword.c
index f399150..653692f 100644
--- a/plugins/sword/sword.c
+++ b/plugins/sword/sword.c
@@ -3,6 +3,7 @@
 #include "../game/game.h"
 #include "../movement/movement.h"
 #include "../inventory/inventory.h"
+#include "../recharge/recharge.h"
 
 static bool use_broken_sword(struct itemstack *stack)
 {
@@ -22,6 +23,9 @@ static struct item broken_sword = {
 
 static bool use_sword(struct itemstack *stack)
 {
+	if (! is_charged())
+		return false;
+
 	int x, y;
 	x = player.x;
 	y = player.y;
@@ -35,6 +39,8 @@ static bool use_sword(struct itemstack *stack)
 
 		if (rand() % 100 == 0)
 			stack->item = &broken_sword;
+
+		recharge(1.0, "⚔ ");
 	}
 
 	return false;
-- 
2.44.0