Fixed screenblock overflow bug and once again merged up/down versions of POP_MENU_ANIM_RECT
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+28
-22
@@ -4,7 +4,7 @@
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#include "graphic_utils.h"
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const Rect FULL_SCREENBLOCK_RECT = { 0, 0, SE_ROW_LEN, SE_COL_LEN };
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const Rect FULL_SCREENBLOCK_RECT = { 0, 0, SE_ROW_LEN - 1, SE_COL_LEN - 1};
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// Clips a rect of screenblock entries to a specified rect
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// The bounding rect is not required to be within screenblock boundaries
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@@ -29,12 +29,19 @@ u16 main_bg_se_get_tile(BG_POINT pos)
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}
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// Clips a rect of screenblock entries to be within one step of
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// screenblock boundaries vertically (1 step from top, 1 step from bottom.
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static void clip_se_rect_within_step_of_full_screen_vert(Rect* se_rect)
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// screenblock boundaries vertically depending on direction.
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static void clip_se_rect_within_step_of_full_screen_vert(Rect* se_rect, int direction)
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{
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Rect bounding_rect = FULL_SCREENBLOCK_RECT;
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bounding_rect.top += 1;
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bounding_rect.bottom -= -1;
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if (direction == SE_UP)
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{
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bounding_rect.top += 1;
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}
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else if (direction == SE_DOWN)
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{
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bounding_rect.bottom -= 1;
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}
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clip_se_rect_to_bounding_rect(se_rect, &bounding_rect);
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}
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@@ -51,7 +58,9 @@ void main_bg_se_clear_rect(Rect se_rect)
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}
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}
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void main_bg_se_copy_rect_1_tile_vert(Rect se_rect, int direction)
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// Internal static function to merge implementation of move/copy functions.
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static void main_bg_se_copy_or_move_rect_1_tile_vert(Rect se_rect, int direction, bool move)
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{
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if (se_rect.left > se_rect.right
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|| (direction != SE_UP && direction != SE_DOWN))
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@@ -60,7 +69,7 @@ void main_bg_se_copy_rect_1_tile_vert(Rect se_rect, int direction)
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}
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// Clip to avoid read/write overflow of the screenblock
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clip_se_rect_within_step_of_full_screen_vert(&se_rect);
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clip_se_rect_within_step_of_full_screen_vert(&se_rect, direction);
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int start = (direction == SE_UP) ? se_rect.top : se_rect.bottom;
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int end = (direction == SE_UP) ? se_rect.bottom : se_rect.top;
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@@ -68,27 +77,24 @@ void main_bg_se_copy_rect_1_tile_vert(Rect se_rect, int direction)
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for (int y = start; y != end - direction; y -= direction)
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{
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memcpy16(&se_mem[MAIN_BG_SBB][se_rect.left + SE_ROW_LEN * (y + direction)],
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&se_mem[MAIN_BG_SBB][se_rect.left + SE_ROW_LEN * y],
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&se_mem[MAIN_BG_SBB][se_rect.left + SE_ROW_LEN * y],
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rect_width(&se_rect));
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}
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if (move)
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{
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memset16(&se_mem[MAIN_BG_SBB][se_rect.left + SE_ROW_LEN * (end)], 0x0000, rect_width(&se_rect));
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}
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}
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void main_bg_se_copy_rect_1_tile_vert(Rect se_rect, int direction)
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{
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main_bg_se_copy_or_move_rect_1_tile_vert(se_rect, direction, false);
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}
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void main_bg_se_move_rect_1_tile_vert(Rect se_rect, int direction)
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{
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if (se_rect.left > se_rect.right
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|| (direction != SE_UP && direction != SE_DOWN))
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{
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return;
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}
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// Clip to avoid read/write overflow of the screenblock
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clip_se_rect_within_step_of_full_screen_vert(&se_rect);
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int deleted_y = (direction == SE_UP) ? se_rect.bottom : se_rect.top;
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main_bg_se_copy_rect_1_tile_vert(se_rect, direction);
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memset16(&se_mem[MAIN_BG_SBB][se_rect.left + SE_ROW_LEN * (deleted_y)], 0x0000, rect_width(&se_rect));
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main_bg_se_copy_or_move_rect_1_tile_vert(se_rect, direction, true);
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}
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void main_bg_se_copy_rect(Rect se_rect, BG_POINT pos)
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