jurjen.ladeniusandClaude Opus 4.8
f3340e86c6
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
88 lines
2.9 KiB
C
88 lines
2.9 KiB
C
// ____________________________
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// ██▀▀█▀▀██▀▀▀▀▀▀▀█▀▀█ │ ▄▄▄ ▄▄ ▄▄
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// ██ ▀ █▄ ▀██▄ ▀ ▄█ ▄▀▀ █ │ ▀█▄ ▄█▀▀ ██▄▀ ▄█▀▄ ██ ██
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// █ █ █ ▀▀ ▄█ █ █ ▀▄█ █▄ │ ▄▄█▀ ▀█▄▄ ██ ▀█▄▀ ▀█▄ ▀█▄
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// ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀────────┘
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// by Guillaume 'Aoineko' Blanchard under CC BY-SA license
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//─────────────────────────────────────────────────────────────────────────────
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#pragma once
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//=============================================================================
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// INCLUDES
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//=============================================================================
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#include "core.h"
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#include "vdp.h"
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//=============================================================================
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// DEFINES
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//=============================================================================
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// Address of the source map data
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extern u16 g_Scroll_Map;
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#if (SCROLL_HORIZONTAL)
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// Horizontal offset (in pixel)
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extern u16 g_Scroll_OffsetX;
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// Horizontal offset (in tiles)
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extern u8 g_Scroll_TileX;
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#endif
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#if (SCROLL_VERTICAL)
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// Vertical offset (in pixel)
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extern u16 g_Scroll_OffsetY;
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// Vertical offset (in tiles)
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extern u8 g_Scroll_TileY;
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#endif
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#if (SCROLL_ADJUST)
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extern u8 g_Scroll_Adjust;
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#endif
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//=============================================================================
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// FUNCTIONS
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//=============================================================================
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// Function: Scroll_Initialize
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// Initialize scrolling module.
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//
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// Parameters:
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// map - Address of the tilemap used to render the scrolling background.
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//
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// Return:
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// First free sprite index (Scroll module reserve several sprites if mask option is activted).
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u8 Scroll_Initialize(u16 map);
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#if (SCROLL_HORIZONTAL)
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// Function: Scroll_SetOffsetH
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// Set scrolling horizontal offset
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//
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// Parameters:
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// offset - Horizontal scrolling offset (in pixels)
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void Scroll_SetOffsetH(i8 offset);
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#endif
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#if (SCROLL_VERTICAL)
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// Function: Scroll_SetOffsetV
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// Set scrolling vertical offset
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//
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// Parameters:
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// offset - Vertical scrolling offset (in pixels)
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void Scroll_SetOffsetV(i8 offset);
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#endif
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#if ((SCROLL_ADJUST) && (SCROLL_ADJUST_SPLIT))
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// Function: Scroll_HBlankAdjust
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// Adjust screen offset. Function to be called in the H-Blank handler
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//
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// Parameters:
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// adjust - Ajust step
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// 0: Frame start
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// 1: Scrolling adjust
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// 2: No more adjust
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void Scroll_HBlankAdjust(u8 adjust);
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#endif
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// Function: Scroll_Update
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// Update scrolling module
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void Scroll_Update(); |