--- a/Makefile	Fri Jan 10 12:37:59 2020 +0100
+++ b/Makefile	Fri Jan 10 13:30:01 2020 +0100
@@ -26,6 +26,7 @@
                 src/clock.c \
                 src/event.c \
                 src/font.c \
+                src/message.c \
                 src/image.c \
                 src/sprite.c \
                 src/sys.c \

Binary file assets/fonts/DejaVuSans.ttf has changed

Binary file assets/fonts/DejaVuSansCondensed.ttf has changed

--- a/src/main.c	Fri Jan 10 12:37:59 2020 +0100
+++ b/src/main.c	Fri Jan 10 13:30:01 2020 +0100
@@ -17,16 +17,18 @@
  */
 
 #include <stdio.h>
+#include <stdlib.h>
 
 #include "animation.h"
 #include "clock.h"
 #include "event.h"
 #include "font.h"
 #include "image.h"
+#include "message.h"
 #include "sprite.h"
+#include "sys.h"
 #include "texture.h"
 #include "window.h"
-#include "sys.h"
 
 int
 main(int argc, char **argv)
@@ -34,11 +36,29 @@
 	(void)argc;
 	(void)argv;
 
+	struct font *font;
+
 	sys_init();
 	window_init("Molko's Adventure", 1280, 720);
-	window_set_color(0x667788ff);
+
+	if (!(font = font_openf("assets/fonts/DejaVuSerifCondensed.ttf", 12)))
+		exit(1);
+
+	struct message welcome = {
+		.text = {
+			"Welcome to this adventure Molko.",
+			"I'm pretty proud of you.",
+			"Now get of my house."
+		},
+		.font = font
+	};
+	struct clock clock;
 
 	for (;;) {
+		uint64_t elapsed = clock_elapsed(&clock);
+
+		clock_start(&clock);
+
 		for (union event ev; event_poll(&ev); ) {
 			switch (ev.type) {
 			case EVENT_QUIT:
@@ -54,7 +74,10 @@
 			}
 		}
 
+		window_set_color(0x667788ff);
 		window_clear();
+		message_update(&welcome, elapsed);
+		message_draw(&welcome);
 		window_present();
 	}
 

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/message.c	Fri Jan 10 13:30:01 2020 +0100
@@ -0,0 +1,101 @@
+/*
+ * message.c -- message dialog
+ *
+ * Copyright (c) 2020 David Demelier <markand@malikania.fr>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <assert.h>
+
+#include "font.h"
+#include "texture.h"
+#include "message.h"
+#include "sprite.h"
+#include "window.h"
+
+#define MESSAGE_SPEED   1000    /* Time delay for animations */
+#define MESSAGE_TIMEOUT 5000    /* Time for auto-closing */
+
+void
+message_start(struct message *msg)
+{
+	assert(msg);
+
+	msg->elapsed = 0;
+	msg->state = MESSAGE_OPENING;
+}
+
+void
+message_update(struct message *msg, unsigned ticks)
+{
+	assert(msg);
+
+	msg->elapsed += ticks;
+
+	switch (msg->state) {
+	case MESSAGE_OPENING:
+		if (msg->elapsed >= MESSAGE_SPEED)
+			msg->state = MESSAGE_SHOWING;
+		break;
+	case MESSAGE_SHOWING:
+		/* Do automatically switch state if requested by the user. */
+		if (msg->flags & MESSAGE_AUTOMATIC && msg->elapsed >= MESSAGE_TIMEOUT)
+			msg->state = MESSAGE_HIDING;
+
+		break;
+	default:
+		break;
+	}
+}
+
+void
+message_draw(struct message *msg)
+{
+	assert(msg);
+
+	/* TODO: more constant variables. */
+	struct texture *lines[3];
+	int x = 160;
+	int y = 80;
+
+	window_set_color(0xff0000ff);
+	window_draw_rectangle(true, x, y, 960, 160);
+
+	for (int i = 0; msg->text[i]; ++i) {
+		lines[i] = font_render(msg->font, msg->text[i], 0xffffffff);
+
+		if (!lines[i])
+			continue;
+
+		texture_draw(lines[i], x, y);
+		texture_close(lines[i]);
+		y += 53;
+	}
+}
+
+void
+message_hide(struct message *msg)
+{
+	assert(msg);
+
+	msg->elapsed = 0;
+}
+
+bool
+message_is_complete(struct message *msg)
+{
+	assert(msg);
+
+	return msg->state == MESSAGE_HIDING && msg->elapsed >= MESSAGE_SPEED;
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/message.h	Fri Jan 10 13:30:01 2020 +0100
@@ -0,0 +1,111 @@
+/*
+ * message.h -- message dialog
+ *
+ * Copyright (c) 2020 David Demelier <markand@malikania.fr>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef MOLKO_MESSAGE_H
+#define MOLKO_MESSAGE_H
+
+/**
+ * \file message.h
+ * \brief Message dialog.
+ */
+
+#include <stdbool.h>
+#include <stdint.h>
+
+struct sprite;
+struct font;
+
+/**
+ * \brief Message flags.
+ */
+enum message_flags {
+	MESSAGE_AUTOMATIC = (1 << 0)    /*!< Message will automatically close */
+};
+
+/**
+ * \brief Message state.
+ */
+enum message_state {
+	MESSAGE_OPENING,                /*!< Message animation is opening */
+	MESSAGE_SHOWING,                /*!< Message is displaying */
+	MESSAGE_HIDING                  /*!< Message animation for hiding */
+};
+
+/**
+ * \brief Message object.
+ */
+struct message {
+	const char *text[3];            /*!< (RW) lines of text to show */
+	struct sprite *theme;           /*!< (RW) sprite to use for the frame */
+	struct texture *avatar;         /*!< (RW) optional avatar */
+        struct font *font;              /*!< (RW) font to use */
+	enum message_flags flags;       /*!< (RW) message flags */
+	enum message_state state;       /*!< (RO) current state */
+	uint16_t elapsed;               /*!< (RW) elapsed time while displaying */
+};
+
+/**
+ * Start opening the message. This function will reset the message state and
+ * elapsed time.
+ *
+ * \pre msg != NULL
+ * \param msg the message
+ */
+void
+message_start(struct message *msg);
+
+/**
+ * Update the message state and elapsed time..
+ *
+ * \pre msg != NULL
+ * \param msg the message
+ * \param ticks the elapsed delay since last frame
+ */
+void
+message_update(struct message *msg, unsigned ticks);
+
+/**
+ * Draw the message into the screen.
+ *
+ * \pre msg != NULL
+ * \param msg the message
+ */
+void
+message_draw(struct message *msg);
+
+/**
+ * Start hiding the message.
+ *
+ * \pre msg != NULL
+ * \param msg the message
+ * \note You should still continue to draw the message as the animation is not
+ *       finished!
+ */
+void
+message_hide(struct message *msg);
+
+/**
+ * Tells if the message is complete.
+ *
+ * \pre msg != NULL
+ * \param msg the message
+ */
+bool
+message_is_complete(struct message *msg);
+
+#endif /* !MOLKO_MESSAGE_H */