Add playground target, refactor Makefile's clean-ish rules

1 files changed, 112 insertions, 0 deletions

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;
+}