add opengl fronend, remove sdl frontend, refactor build system

1 files changed, 48 insertions, 0 deletions

diff --git a/frontends/calculator/CEdev/examples/hello_world/src/main.c b/frontends/calculator/CEdev/examples/hello_world/src/main.c
new file mode 100644
index 0000000..333dcdc
--- /dev/null
+++ b/frontends/calculator/CEdev/examples/hello_world/src/main.c
@@ -0,0 +1,48 @@
+/* Keep these headers */
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <tice.h>
+
+/* Standard headers */
+#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+/* Put function prototypes here */
+void printText(const char *text, uint8_t x, uint8_t y);
+void printTextSmall(const char *text, uint8_t xpos, uint8_t ypos);
+
+/* Put all your code here */
+void main(void) {
+    /* uint8_t is an unsigned integer that can range from 0-255. */
+    /* It performs faster than just an int, so try to use it (or int8_t) when possible */
+    uint8_t count;
+
+    /* Initialize some strings */
+    const char *HelloWorld = "Hello World!";
+    const char *Welcome = "Welcome to C!";
+
+    /* Clear the homescreen */
+    os_ClrHome();
+
+    /* Print a few strings */
+    printText(HelloWorld, 0, 0);
+    printText(Welcome, 0, 1);
+
+    /* Wait for a key press */
+    while (!os_GetCSC());
+}
+
+/* Draw text on the homescreen at the given X/Y location */
+void printText(const char *text, uint8_t xpos, uint8_t ypos) {
+    os_SetCursorPos(ypos, xpos);
+    os_PutStrFull(text);
+}
+
+/* Draw small text at the given X/Y location */
+void printTextSmall(const char *text, uint8_t xpos, uint8_t ypos) {
+    os_FontSelect(0); // sets small font (1 == big, see docs)
+    os_FontDrawText(text, xpos, ypos);
+}