From 66fbdd735e19ee473aa3287133bd72e61fe56452 Mon Sep 17 00:00:00 2001
From: Oxore <oxore@protonmail.com>
Date: Sun, 22 Sep 2019 22:29:33 +0300
Subject: Add playground target, refactor Makefile's clean-ish rules

---
 Makefile        |  24 +++++++++---
 pg.mk           |  27 ++++++++++++++
 src/target/pg.c | 112 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 157 insertions(+), 6 deletions(-)
 create mode 100644 pg.mk
 create mode 100644 src/target/pg.c

diff --git a/Makefile b/Makefile
index 59cc835..08e39ab 100644
--- a/Makefile
+++ b/Makefile
@@ -65,6 +65,10 @@ ifndef NOTEST
 all: $(TARGET_TEST)
 endif
 
+.PHONY: pg
+pg:
+	make -f pg.mk $@ PREFIX=$(PREFIX)
+
 $(TARGET_TETRIS): $(OBJECTS) $(TARGET)/$(TARGET_TETRIS).c.o $(LIBF8)/libf8.a \
 	$(CJSON)/cJSON.o
 	$(QQ) echo "  LD      $@"
@@ -81,7 +85,7 @@ $(OBJECTS): | $(BUILD)/ $(TARGET)/
 	$(Q) mkdir -p $@
 
 $(LIBF8)/libf8.a: $(LIBF8)
-	make -C $<
+	make -C $< NOTEST=1
 
 $(CJSON)/cJSON.c.o: $(CJSON)/cJSON.c
 	$(QQ) echo "  CC      $@"
@@ -98,8 +102,16 @@ $(BUILD)/%.c.o: $(SRC)/%.c
 -include $(DEPENDS)
 
 clean:
-	$(Q) $(RM) -rfv $(TARGET_TETRIS) $(TARGET_TEST) $(BUILD)
-	$(Q) $(RM) -rfv $(MUNIT)/*.d $(MUNIT)/*.o
-	$(Q) $(RM) -rfv $(CJSON)/*.d $(CJSON)/*.o
-
-.PHONY: all clean
+	$(Q) $(RM) -rfv $(OBJECTS) $(DEPENDS) \
+		$(TARGET_TETRIS) $(TARGET_TEST) \
+		$(TARGET)/$(TARGET_TETRIS).c.o $(TARGET)/$(TARGET_TETRIS).c.d \
+		$(TARGET)/$(TARGET_TEST).c.o $(TARGET)/$(TARGET_TEST).c.d
+	make -f pg.mk $@
+
+mrproper: clean
+	$(Q) $(RM) -rfv $(BUILD) \
+		$(MUNIT)/*.d $(MUNIT)/*.o \
+		$(CJSON)/*.d $(CJSON)/*.o
+	make -C $(LIBF8) clean
+
+.PHONY: all clean mrproper
diff --git a/pg.mk b/pg.mk
new file mode 100644
index 0000000..41686e1
--- /dev/null
+++ b/pg.mk
@@ -0,0 +1,27 @@
+# playground target for trying things with SFML
+
+LIBF8=deps/libf8
+
+ifneq ($(PREFIX),)
+LDFLAGS+=-L$(PREFIX)/lib
+LDFLAGS+=-Wl,-rpath=$(PREFIX)/lib
+INCLUDE+=-I$(PREFIX)/include
+endif
+
+INCLUDE+=-I$(LIBF8)
+
+LDFLAGS+=-lcsfml-graphics
+LDFLAGS+=-lcsfml-window
+LDFLAGS+=-lcsfml-system
+LDFLAGS+=-lyaml
+
+CFLAGS+=-Wno-deprecated-declarations
+
+pg: src/target/pg.c $(LIBF8)/libf8.a
+	$(CC) $(LDFLAGS) $(CFLAGS) $(INCLUDE) $^ -o $@
+
+$(LIBF8)/libf8.a: $(LIBF8)
+	make -C $< NOTEST=1
+
+clean:
+	rm -rfv pg
diff --git a/src/target/pg.c b/src/target/pg.c
new file mode 100644
index 0000000..071f2d0
--- /dev/null
+++ b/src/target/pg.c
@@ -0,0 +1,112 @@
+/*
+ * pg.c
+ *
+ * Playground template to try things, mostly SFML related.
+ *
+ * */
+
+#include <SFML/Graphics.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <f8.h>
+
+static size_t utf8_detect_back(const char *text)
+{
+    if ((*text-- & 0x80) == 0)
+        return 1;
+
+    if ((*text-- & 0xE0) == 0xC0)
+        return 2;
+
+    if ((*text-- & 0xF0) == 0xE0)
+        return 3;
+
+    if ((*text-- & 0xF8) == 0xF0)
+        return 4;
+
+    return 0;
+}
+
+static void handleWindowEvents(sfRenderWindow *window, char *text, size_t size)
+{
+    sfEvent event;
+
+    while (sfRenderWindow_pollEvent(window, &event)) {
+        if (event.type == sfEvtClosed)
+            sfRenderWindow_close(window);
+
+        if (size == 0)
+            continue;
+
+        if (event.type == sfEvtTextEntered) {
+            size_t len = strnlen(text, size - 1);
+
+            if (event.text.unicode == L'\b') {
+                len -= len > 0 ? 1 : 0;
+                size_t clen = utf8_detect_back(&text[len]);
+                memset(&text[len + 1 - clen], 0, clen);
+            } else {
+                utf32to8_strcpy_s(&text[len], size - len, &event.text.unicode);
+            }
+        }
+    }
+}
+
+int main()
+{
+    /* Initialization */
+
+    char utf8_text[BUFSIZ] = {0};
+    int32_t utf32_text[BUFSIZ] = {0};
+
+    sfRenderWindow *window;
+
+    sfVideoMode mode = (sfVideoMode){450, 570, 32};
+    window = sfRenderWindow_create(mode, "CSFML", sfResize | sfClose, NULL);
+    if (!window)
+        exit(EXIT_FAILURE);
+    sfRenderWindow_setFramerateLimit(window, 60);
+
+    sfFont *font = sfFont_createFromFile("./dat/arial.ttf");
+    sfText *text = sfText_create();
+    sfText_setPosition(text, (sfVector2f){100, 100});
+    sfText_setString(text, "aaaaaaaaaaaa");
+    sfText_setColor(text, (sfColor){255, 255, 255, 255});
+    sfText_setFillColor(text, (sfColor){255, 255, 255, 255});
+    sfText_setCharacterSize(text, 20);
+    sfText_setFont(text, font);
+
+    sfRectangleShape *rect = sfRectangleShape_create();
+    sfRectangleShape_setPosition(rect, (sfVector2f){100, 100});
+    sfRectangleShape_setSize(rect, (sfVector2f){150, 30});
+    sfRectangleShape_setOutlineThickness(rect, 1);
+    sfRectangleShape_setOutlineColor(rect, sfGreen);
+    sfRectangleShape_setFillColor(rect, (sfColor){0, 0, 0, 0});
+
+    /* Main loop */
+
+    while (sfRenderWindow_isOpen(window)) {
+        handleWindowEvents(window, utf8_text, 40);
+
+        sfText_setUnicodeString(text, utf8to32_strcpy_s(utf32_text, sizeof(utf8_text), utf8_text));
+        sfRenderWindow_clear(window, (sfColor){26, 26, 26, 255});
+        sfRenderWindow_drawRectangleShape(window, rect, NULL);
+        sfRenderWindow_drawText(window, text, NULL);
+        sfRenderWindow_display(window);
+    }
+
+    /* Cleanup */
+
+    sfRectangleShape_destroy(rect);
+
+    sfText_destroy(text);
+    sfFont_destroy(font);
+
+    if (window) {
+        sfRenderWindow_destroy(window);
+        window = 0;
+    }
+
+    return EXIT_SUCCESS;
+}
-- 
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