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Main menu prototype

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This commit is contained in:
cellos51
2025-08-09 21:49:37 -04:00
parent 8a905907fc
commit 164f58aa1e
11 changed files with 200 additions and 30 deletions
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source/affine_background.c
+56 -13
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@@ -1,16 +1,17 @@
#include "affine_background.h"
#include "affine_background_gfx.h"
#include "affine_main_menu_background_gfx.h"
#include "graphic_utils.h"
BG_AFFINE bgaff;
AFF_SRC_EX asx = {32<<8, 64<<8, 120, 80, 0x0100, 0x0100, 0};
AFF_SRC_EX asx = {0};
enum AffineBackgroundID background = AFFINE_BG_MAIN_MENU;
void affine_background_init()
{
memcpy32_tile8_with_palette_offset((u32*)&tile8_mem[AFFINE_BG_CBB], (const u32*)affine_background_gfxTiles, affine_background_gfxTilesLen/4, AFFINE_BG_PB);
GRIT_CPY(&se_mem[AFFINE_BG_SBB], affine_background_gfxMap);
affine_background_load_palette(affine_background_gfxPal);
{
affine_background_change_background(background);
bgaff = bg_aff_default;
}
@@ -20,20 +21,37 @@ 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
switch (background)
{
case AFFINE_BG_MAIN_MENU:
asx.scr_x = SCREEN_WIDTH / 2;
asx.scr_y = SCREEN_HEIGHT / 2;
asx.tex_x = 16560;
asx.tex_y = 14400;
asx.sx = 128;
asx.sy = 128;
asx.alpha = 1000; // This slightly rotates it which increases the percieved resolution of the background
break;
case AFFINE_BG_GAME:
asx.scr_x = 0;
asx.scr_y = 0;
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
asx.alpha = 0;
break;
}
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);
memcpy16(&pal_bg_mem[AFFINE_BG_PB], affine_main_menu_background_gfxPal, AFFINE_BG_PAL_LEN);
for (int i = 0; i < AFFINE_BG_PAL_LEN; i++)
{
clr_rgbscale(&pal_bg_mem[AFFINE_BG_PB] + i, &pal_bg_mem[AFFINE_BG_PB] + i, 1, color);
@@ -43,4 +61,29 @@ void affine_background_set_color(COLOR color)
void affine_background_load_palette(const u16 *src)
{
memcpy16(&pal_bg_mem[AFFINE_BG_PB], src, AFFINE_BG_PAL_LEN);
}
void affine_background_change_background(enum AffineBackgroundID new_bg)
{
background = new_bg;
switch (background)
{
case AFFINE_BG_MAIN_MENU:
REG_BG2CNT &= ~BG_AFF_32x32;
REG_BG2CNT |= BG_AFF_16x16;
memcpy32_tile8_with_palette_offset((u32*)&tile8_mem[AFFINE_BG_CBB], (const u32*)affine_main_menu_background_gfxTiles, affine_main_menu_background_gfxTilesLen/4, AFFINE_BG_PB);
GRIT_CPY(&se_mem[AFFINE_BG_SBB], affine_main_menu_background_gfxMap);
affine_background_load_palette(affine_main_menu_background_gfxPal);
break;
case AFFINE_BG_GAME:
REG_BG2CNT &= ~BG_AFF_16x16;
REG_BG2CNT |= BG_AFF_32x32;
memcpy32_tile8_with_palette_offset((u32*)&tile8_mem[AFFINE_BG_CBB], (const u32*)affine_background_gfxTiles, affine_background_gfxTilesLen/4, AFFINE_BG_PB);
GRIT_CPY(&se_mem[AFFINE_BG_SBB], affine_background_gfxMap);
affine_background_load_palette(affine_background_gfxPal);
break;
}
}