From 6d7e29398964c6836206e93961580a79ead741f1 Mon Sep 17 00:00:00 2001
From: Bad Diode <bd@badd10de.dev>
Date: Mon, 19 Apr 2021 19:30:09 +0200
Subject: Test sprites exported with my little tool

---
 src/main.c | 58 ++++++++++++++++++++++++++++++++++++++++------------------
 1 file changed, 40 insertions(+), 18 deletions(-)

diff --git a/src/main.c b/src/main.c
index e39551c..740dbbf 100644
--- a/src/main.c
+++ b/src/main.c
@@ -443,25 +443,25 @@ copy_font_to_tile_memory(Tile *tile) {
 }
 
 static int bouncing_animation[] = {
-    0, 0, 0,
     0, 0, 0,
     0, 0, 0,
     0, 0, 0,
     1, 1, 1,
+    2, 2, 2,
     3, 3, 3,
     5, 5, 5,
-    5, 5, 5,
+    6, 6, 6,
     7, 7, 7,
     8, 8, 8,
     7, 7, 7,
-    5, 5, 5,
+    6, 6, 6,
     5, 5, 5,
     3, 3, 3,
+    2, 2, 2,
     1, 1, 1,
     0, 0, 0,
     0, 0, 0,
     0, 0, 0,
-    0, 0, 0,
 };
 
 typedef struct FontSprite {
@@ -472,6 +472,21 @@ typedef struct FontSprite {
     u32 pal_bank;
 } FontSprite;
 
+
+static u32 test_tiles[][8] = {
+    {0x33322111, 0x33322111, 0x33322111, 0x33322111, 0x33322111, 0x33322111, 0x33322111, 0x33322111},
+    {0x00044000, 0x00044000, 0x00044000, 0x44444444, 0x44444444, 0x00044000, 0x00044000, 0x00044000},
+    {0x44400444, 0x44400444, 0x44400444, 0x00000000, 0x00000000, 0x44400444, 0x44400444, 0x44400444},
+    {0x11122333, 0x11122333, 0x11122333, 0x11122333, 0x11122333, 0x11122333, 0x11122333, 0x11122333},
+};
+
+static u16 test_palette[16] = {
+    0x0000, 0x001f, 0x03e0, 0x7c00,
+    0x7fff, 0x0000, 0x0000, 0x0000,
+    0x0000, 0x0000, 0x0000, 0x0000,
+    0x0000, 0x0000, 0x0000, 0x0000
+};
+
 int main(void) {
     // Configure the display in mode 0 to show OBJs, where tile memory is
     // sequential.
@@ -479,14 +494,10 @@ int main(void) {
 
     // Add colors to the sprite color palette. Tiles with color number 0 are
     // treated as transparent.
-    PAL_BUFFER_SPRITES[1] = COLOR_WHITE;
-    PAL_BUFFER_SPRITES[2] = COLOR_RED;
-    PAL_BUFFER_SPRITES[3] = COLOR_CYAN;
-    PAL_BUFFER_SPRITES[4] = COLOR_BLUE;
-    PAL_BUFFER_SPRITES[5] = COLOR_WHITE;
-    PAL_BUFFER_SPRITES[6] = COLOR_RED;
-    PAL_BUFFER_SPRITES[7] = COLOR_CYAN;
-    PAL_BUFFER_SPRITES[8] = COLOR_BLUE;
+    for (size_t i = 0; i < 16; ++i) {
+        PAL_BUFFER_SPRITES[i] = test_palette[i];
+        PAL_BUFFER_SPRITES[i + 16] = COLOR_WHITE;
+    }
 
     // Initialize all attributes by disabling rendering. If we don't do this,
     // glitches may appear.
@@ -502,19 +513,26 @@ int main(void) {
     // uppercase A letter will be at tile index of 512 + 65.
     copy_font_to_tile_memory(tile_mem);
 
+    // Test copying the exported tiles.
+    for (size_t i = 0; i < 4; ++i) {
+        for (size_t j = 0; j < 8; ++j) {
+            (tile_mem + i)->data[j] = test_tiles[i][j];
+        }
+    }
+
     // Initialize character sprites for all font chars.
     FontSprite font_sprites[256] = {0};
     size_t x = 49;
-    size_t y = 0;
+    size_t y = 8;
     for (size_t i = 0; i < 256; ++i) {
+        if ((i % 16) == 0 && i != 0) {
+            y += 16;
+            x = 49;
+        }
         font_sprites[i].x = x;
         font_sprites[i].y = y;
         font_sprites[i].tile_index = initial_tile + i;
         font_sprites[i].animation_state = i % 56;
-        if ((i % 16) == 0) {
-            y += 16;
-            x = 49;
-        }
         x += 8;
     }
 
@@ -523,7 +541,11 @@ int main(void) {
     for (size_t i = 0; i < n_chars; ++i) {
         OBJ_ATTR_0(i) = font_sprites[i].y;
         OBJ_ATTR_1(i) = font_sprites[i].x;
-        OBJ_ATTR_2(i) = font_sprites[i].tile_index;
+        if (i < 4) {
+            OBJ_ATTR_2(i) = font_sprites[i].tile_index;
+        } else {
+            OBJ_ATTR_2(i) = font_sprites[i].tile_index | (1 << 0xC);
+        }
     }
 
     // draw_logo();
-- 
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