Add affine background color functionality and integrate into game loop

include/affine_background.h

@@ -0,0 +1,16 @@
+#ifndef AFFINE_BACKGROUND_H
+#define AFFINE_BACKGROUND_H
+
+#include <tonc.h>
+
+#include "graphic_utils.h"
+
+#define AFFINE_BG_PAL_LEN 5
+#define AFFINE_BG_PB (PAL_ROW_LEN * 15) // This isn't really a palette bank, just the starting index of the palette
+#define AFFINE_BG_DEFAULT_COLOR 0x3E4B
+
+void affine_background_init();
+void affine_background_update();
+void affine_background_set_color(COLOR color);
+
+#endif // AFFINE_BACKGROUND_H

source/affine_background.c

@@ -0,0 +1,63 @@
+#include "affine_background.h"
+#include "affine_background_gfx.h"
+
+#include "graphic_utils.h"
+
+BG_AFFINE bgaff;
+AFF_SRC_EX asx = {32<<8, 64<<8, 120, 80, 0x0100, 0x0100, 0};
+
+void affine_background_init()
+{
+    unsigned int correctedTiles[affine_background_gfxTilesLen / 4];
+
+    for (int i = 0; i < affine_background_gfxTilesLen / 4; i++)
+    {   
+        correctedTiles[i] = affine_background_gfxTiles[i] | 0xF0F0F0F0;
+    }
+
+	memcpy16(&tile8_mem[AFFINE_BG_CBB], correctedTiles, affine_background_gfxTilesLen/2);
+    GRIT_CPY(&se_mem[AFFINE_BG_SBB], affine_background_gfxMap);
+    memcpy16(&pal_bg_mem[AFFINE_BG_PB], affine_background_gfxPal, AFFINE_BG_PAL_LEN);
+
+	bgaff = bg_aff_default;
+
+    affine_background_set_color(AFFINE_BG_DEFAULT_COLOR);
+}
+
+void affine_background_update()
+{
+    static uint timer = 0;
+    timer++;
+
+    // These values are not permament, just the current configuration for the affine background
+    asx.tex_x += 5;
+    asx.tex_y += 12;
+    asx.sx = (lu_sin(timer * 100)) >> 8; // Scale the sine value to fit in a s16
+    asx.sx += 256; // Add 256 to the sine value to make it positive
+    asx.sy = (lu_sin(timer * 100 + 0x4000)) >> 8; // Scale the sine value to fit in a s16
+    asx.sy += 256; // Add 256 to the sine value to make it positive
+    bg_rotscale_ex(&bgaff, &asx);
+	REG_BG_AFFINE[2] = bgaff;
+}
+
+void affine_background_set_color(COLOR color)
+{
+    memcpy16(&pal_bg_mem[AFFINE_BG_PB], affine_background_gfxPal, AFFINE_BG_PAL_LEN);
+    for (int i = 0; i < AFFINE_BG_PAL_LEN; i++)
+    {
+        COLOR old_color;
+        memcpy16(&old_color, &pal_bg_mem[AFFINE_BG_PB] + i, 1); // Copy the color from the background palette
+
+        int r, g, b;
+        r = (old_color >> 10) & 0b11111; // Extract red component
+        g = (old_color >> 5) & 0b11111; // Extract green component
+        b = old_color & 0b11111; // Extract blue component
+
+        int brightness = (r + g + b) / 3; // Calculate brightness
+
+        const float brightness_divergence = 0.03f; // The difference in brightness between each color in the palette
+        const float brightness_modifier = -0.4f; // The overall brightness modifier for the palette
+
+        clr_adj_brightness(&pal_bg_mem[AFFINE_BG_PB] + i, &color, 1, float2fx(brightness_modifier + (brightness * brightness_divergence))); // Adjust brightness for the palette colors
+    }
+}

source/game.c

@@ -11,6 +11,7 @@
 #include "hand_analysis.h"
 #include "blind.h"
 #include "joker.h"
+#include "affine_background.h"
 #include "graphic_utils.h"
 #include "tonc_video.h"
 #include "audio_utils.h"
@@ -430,22 +431,7 @@ void change_background(int id)
             {
                 main_bg_se_copy_rect(BOSS_BLIND_TITLE_SRC_RECT, TOP_LEFT_BLIND_TITLE_POINT);
 
-                const int palette_length = 5;
-                memcpy16(&pal_bg_mem[16 * 15], affine_background_gfxPal, palette_length);
-                for (int i = 0; i < palette_length; i++)
-                {
-                    COLOR old_color = 0;
-                    memcpy16(&old_color, &pal_bg_mem[16 * 15] + i, 1); // Copy the color from the background palette
-
-                    int r, g, b;
-                    r = (old_color >> 10) & 0b11111; // Extract red component
-                    g = (old_color >> 5) & 0b11111; // Extract green component
-                    b = old_color & 0b11111; // Extract blue component
-
-                    COLOR new_color = blind_get_color(BOSS_BLIND, BLIND_MAIN_COLOR_INDEX);
-                    int brightness = (r + g + b) / 3; // Calculate brightness
-                    clr_adj_brightness(&pal_bg_mem[16 * 15] + i, &new_color, 1, float2fx(-0.6f + (brightness * 0.05f))); // Adjust brightness for the palette colors
-                }
+                affine_background_set_color(blind_get_color(BOSS_BLIND, BLIND_SHADOW_COLOR_INDEX));
             }
 
             bg_copy_current_item_to_top_left_panel();
@@ -2004,6 +1990,7 @@ void game_round_end()
                 tte_erase_rect_wrapper(BLIND_REWARD_RECT);
                 tte_erase_rect_wrapper(BLIND_REQ_TEXT_RECT);
                 obj_hide(playing_blind_token->obj);
+                affine_background_set_color(AFFINE_BG_DEFAULT_COLOR);
                 state = 5;
                 timer = 0;
             }

source/main.c

@@ -7,6 +7,7 @@
 #include "game.h"
 #include "blind.h"
 #include "joker.h"
+#include "affine_background.h"
 #include "graphic_utils.h"
 
 // Graphics
@@ -17,29 +18,6 @@
 #include "soundbank.h"
 #include "soundbank_bin.h"
 
-#define MAP_AFF_SIZE 0x0100
-BG_AFFINE bgaff;
-AFF_SRC_EX asx = {32<<8, 64<<8, 120, 80, 0x0100, 0x0100, 0};
-
-
-void init_map() // Temp function derived from libtonc example
-{   
-    // Grit is fucking garbage and doesn't allow you to have a palette offset, they all get loaded at 0x0000. I have to manually change each tile's palette bank
-
-    unsigned int correctedTiles[affine_background_gfxTilesLen / 4];
-    for (int i = 0; i < affine_background_gfxTilesLen / 4; i++)
-    {   
-        correctedTiles[i] = affine_background_gfxTiles[i] | 0xF0F0F0F0; // I brute forced this. I have no idea how this would and does work, but it does. We'll just leave this here for now.
-        // Actually for future reference, each number seems to equate to an XY on the palette, so 0xF0F0F0F0 would just push everything down 15 colors, since the second number isn't set.
-    }
-
-	memcpy16(&tile8_mem[AFFINE_BG_CBB], correctedTiles, affine_background_gfxTilesLen);
-    GRIT_CPY(&se_mem[AFFINE_BG_SBB], affine_background_gfxMap);
-    memcpy16(&pal_bg_mem[16 * 15], affine_background_gfxPal, 5);
-
-	bgaff = bg_aff_default;
-}
-
 void init()
 {
     irq_init(NULL);
@@ -93,9 +71,8 @@ void init()
 
     REG_DISPCNT = DCNT_MODE1 | DCNT_OBJ_1D | DCNT_BG0 | DCNT_BG1 | DCNT_BG2 | DCNT_OBJ | DCNT_WIN0 | DCNT_WIN1;
 
-    init_map(); // Initialize the map for the background
-
     // Initialize subsystems
+    affine_background_init();
     sprite_init();
     card_init();
     blind_init();
@@ -103,24 +80,9 @@ void init()
     game_init();
 }
 
-void background_update() // This needs to be called before update() and draw() because setting REG_BG_AFFINE during an HBlank can cause issues
-{
-    static uint timer = 0;
-    timer++;
-
-    // These values are not permament, just the current configuration for the affine background
-    asx.tex_x += 5;
-    asx.tex_y += 12;
-    asx.sx = (lu_sin(timer * 100)) >> 8; // Scale the sine value to fit in a s16
-    asx.sx += 256; // Add 256 to the sine value to make it positive
-    asx.sy = (lu_sin(timer * 100 + 0x4000)) >> 8; // Scale the sine value to fit in a s16
-    asx.sy += 256; // Add 256 to the sine value to make it positive
-    bg_rotscale_ex(&bgaff, &asx);
-	REG_BG_AFFINE[2]= bgaff;
-}
-
 void update()
 {
+    affine_background_update();
     game_update();
 }
 
@@ -138,7 +100,6 @@ int main()
         VBlankIntrWait();
         mmFrame();
 		key_poll();
-        background_update();
         update();
         draw();
     }