First stab at the sw blitter

1 files changed, 35 insertions, 10 deletions

diff --git a/src/main.c b/src/main.c
index 9876404..89ae860 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1,7 +1,7 @@
 #include <stdint.h>
-#include <stdio.h>
 #include <string.h>
 #include <stdlib.h>
+#include <stdio.h>
 #include <crt0.h>
 
 #include "keyb.h"
@@ -29,25 +29,50 @@ int main(int argc, char *argv[])
 
     set_palette(binary_palette_start);
 
-    uint8_t *screen = open_framebuffer();
-    if (!screen)
+    if (!open_framebuffer())
     {
         set_mode(3);
         fprintf(stderr, "ERROR: failed to open the framebuffer\n");
         return 1;
     }
 
-    int i = 0;
+    blit_erase(0);
+
+    uint8_t bg[24 * 24] = { 0 };
+    uint16_t x = 10, y = 10;
+    int8_t ix = 1, iy = 1;
+    uint8_t c = 0;
+
     while (!keys[KEY_ESC])
     {
-        wait_vsync();
+        // erase
+        blit(bg, x, y, 24, 24);
 
-        memset(screen, i, 320 * 200);
-        i++;
-        if (i > 15)
-            i = 0;
+        x += ix;
+        y += iy;
+
+        if (x >= 320 - 24 || x == 0)
+        {
+            ix *= -1;
+            c = (c + 1) % 15;
+            blit_erase(c);
+            memset(bg, c, 24 * 24);
+        }
+        if (y >= 200 - 24 || y == 0)
+        {
+            iy *= -1;
+            c = (c + 1) % 15;
+            blit_erase(c);
+            memset(bg, c, 24 * 24);
+        }
+
+        // draw
+        blit(binary_sprites_start, x, y, 24, 24);
+
+        wait_vsync();
+        blit_update();
 
-        timer_wait(1);
+        //timer_wait(1);
     }
 
     set_mode(3);