jurjen.ladeniusandClaude Opus 4.8
f3340e86c6
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
318 lines
9.0 KiB
C
318 lines
9.0 KiB
C
// ____________________________
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// ██▀▀█▀▀██▀▀▀▀▀▀▀█▀▀█ │ ▄▄▄ ▄▄
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// ██ ▀ █▄ ▀██▄ ▀ ▄█ ▄▀▀ █ │ ▀█▄ ▄▀██ ▄█▄█ ██▀▄ ██ ▄███
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// █ █ █ ▀▀ ▄█ █ █ ▀▄█ █▄ │ ▄▄█▀ ▀▄██ ██ █ ██▀ ▀█▄ ▀█▄▄
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// ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀────────┘ ▀▀
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// VDP command sample
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//─────────────────────────────────────────────────────────────────────────────
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//=============================================================================
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// INCLUDES
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//=============================================================================
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#include "msxgl.h"
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//=============================================================================
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// DEFINES
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//=============================================================================
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// Library's logo
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#define MSX_GL6 "\x01\x02\x03\x04\x05\x06"
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#define MSX_GL8 "\x02\x03\x04\x05"
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// #define GET_OP(a) (g_Operator == 0xFF) ? a : g_Operator
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#define HEIGHT 212
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// Screen setting
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struct ScreenSetting
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{
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// Setup
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const c8* Name;
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u8 Mode;
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u16 Width;
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u8 BPC;
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// Colors
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u8 Text;
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u8 Background;
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u8 Red;
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u8 White;
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u8 Gray;
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u8 Black;
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// Data
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const u8* Font;
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const u8* Data;
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const u8* DataLMMC;
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const u16* Palette;
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};
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//=============================================================================
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// MEMORY DATA
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//=============================================================================
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// Screen mode setting index
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u8 g_SrcModeIndex;
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u8 g_VBlank = 0;
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u8 g_Frame = 0;
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u16 SX0, SY0;
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u16 SX, SY;
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u8 g_Operator = 0xFF; // default
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bool g_bMoving;
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// Memory buffer to unpack compressed data
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u8 g_LMMC2b_2[32*16*6];
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u8 g_LMMC4b[16*16*6];
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u8 g_LMMC4b_2[32*16*6];
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//=============================================================================
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// READ-ONLY DATA
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//=============================================================================
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// Fonts
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extern const u8 g_Font_MGL_Sample6[];
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extern const u8 g_Font_MGL_Sample8[];
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// Bitmaps by GrafxKid (https://opengameart.org/content/super-random-sprites)
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extern const u8 g_DataBmp2b[];
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extern const u8 g_DataBmp4b[];
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extern const u8 g_DataBmp8b[];
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// Screen mode settings
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const struct ScreenSetting g_Settings[] =
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{ // Name Mode Width BPC Txt BG Red White Gray Black Font Data DataLMMC Palette
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{ MSX_GL6 " SOFTWARE SPRITE SAMPLE (S5/G4)", VDP_MODE_SCREEN5, 256, 4, 0xFF, 0xCC, 0x22, 0x33, 0x11, 0x11, g_Font_MGL_Sample6, g_DataBmp4b, g_LMMC4b, NULL }, // 0
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{ MSX_GL8 " SOFTWARE SPRITE SAMPLE (S6/G5)", VDP_MODE_SCREEN6, 512, 2, 0xFF, 0x00, 0x55, 0xAA, 0xAA, 0x55, g_Font_MGL_Sample8, g_DataBmp2b, g_LMMC2b_2, NULL }, // 1
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{ MSX_GL8 " SOFTWARE SPRITE SAMPLE (S7/G6)", VDP_MODE_SCREEN7, 512, 4, 0xFF, 0xCC, 0x22, 0x33, 0x11, 0x11, g_Font_MGL_Sample8, g_DataBmp4b, g_LMMC4b_2, NULL }, // 2
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{ MSX_GL6 " SOFTWARE SPRITE SAMPLE (S8/G7)", VDP_MODE_SCREEN8, 256, 8, 0xFF, COLOR8_DARKGREEN, COLOR8_GREEN, COLOR8_LIGHTGREEN, 0x6D, 0x00, g_Font_MGL_Sample6, g_DataBmp8b, g_DataBmp8b, NULL }, // 3
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};
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// Sign-of-life animation
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const u8 chrAnim[] = { '|', '\\', '-', '/' };
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//=============================================================================
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// HELPER FUNCTIONS
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//=============================================================================
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//-----------------------------------------------------------------------------
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//
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void BackupBackground()
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{
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const struct ScreenSetting* src = &g_Settings[g_SrcModeIndex];
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u8 pixelWidth = src->Width / 256;
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u8 sprtWidth = pixelWidth * 16;
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// Backup
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VDP_CommandHMMM(SX * pixelWidth - 2, SY, 0, HEIGHT + 16, sprtWidth + 4, 16);
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SX0 = SX;
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SY0 = SY;
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}
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//-----------------------------------------------------------------------------
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//
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void InitScreen()
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{
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const struct ScreenSetting* src = &g_Settings[g_SrcModeIndex];
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//-------------------------------------------------------------------------
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// Setup variables
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u16 blockWidth = src->Width / 16;
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u16 blockBytes = 16 / 8 * src->BPC;
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u16 lineBytes = src->Width / 8 * src->BPC;
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u8 scale = 8 / src->BPC;
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u8 pixelWidth = src->Width / 256;
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u8 sprtWidth = pixelWidth * 16;
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// Initialize VDP
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VDP_SetMode(src->Mode);
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VDP_SetColor(src->Background);
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VDP_EnableSprite(FALSE);
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//-------------------------------------------------------------------------
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// Initialize background
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if (src->BPC == 2)
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{
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VDP_SetPaletteEntry(0, RGB16(1, 3, 1));
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VDP_SetPaletteEntry(1, RGB16(1, 5, 1));
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VDP_SetPaletteEntry(2, RGB16(0, 0, 0));
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VDP_SetPaletteEntry(3, RGB16(7, 7, 7));
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}
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else if (src->BPC == 4)
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{
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VDP_SetPaletteEntry(0, COLOR16_DEFAULT_0);
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VDP_SetPaletteEntry(1, COLOR16_DEFAULT_1);
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VDP_SetPaletteEntry(2, COLOR16_DEFAULT_2);
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VDP_SetPaletteEntry(3, COLOR16_DEFAULT_3);
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VDP_SetPaletteEntry(5, RGB16(4, 4, 4));
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}
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VDP_CommandHMMV(0, 0, src->Width, HEIGHT, src->Background);
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for (u8 i = 0; i < 255; ++i)
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{
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u16 x = Math_GetRandom16() % src->Width;
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u16 y = Math_GetRandom16() % (HEIGHT - 24) + 16;
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VDP_CommandLMMV(x, y, pixelWidth, 1, src->Red, VDP_OP_IMP);
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x = Math_GetRandom16() % src->Width;
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y = Math_GetRandom16() % (HEIGHT - 24) + 16;
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VDP_CommandLMMV(x, y, pixelWidth, 1, src->White, VDP_OP_IMP);
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}
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// Initialize sprite
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VDP_CommandHMMV(0, HEIGHT, sprtWidth * 6, 16, 0);
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for (u8 i = 0; i < 6; ++i)
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{
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VDP_CommandLMMC(src->DataLMMC + i * (16 * 16 * pixelWidth), i * sprtWidth, HEIGHT, sprtWidth, 16, VDP_OP_TIMP);
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}
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//-------------------------------------------------------------------------
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// Initialize font
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Print_SetBitmapFont(src->Font);
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Print_SetColor(src->Text, src->Background);
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// Display header
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Print_SetPosition(0, 2);
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Print_DrawText(src->Name);
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Draw_LineH(0, src->Width - 1, 12, src->Text, 0);
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// Display footer
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Print_SetPosition(0, 204);
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Print_DrawText("\x81\x82\x80:Move \x83:Change mode");
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BackupBackground();
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}
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//-----------------------------------------------------------------------------
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//
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void DisplaySprite()
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{
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const struct ScreenSetting* src = &g_Settings[g_SrcModeIndex];
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u8 pixelWidth = src->Width / 256;
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u8 sprtWidth = pixelWidth * 16;
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// Restore background at the previous place
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VDP_CommandHMMM(0, HEIGHT + 16, SX0 * pixelWidth - 2, SY0, sprtWidth + 4, 16);
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// Backup background at the new place
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VDP_CommandHMMM(SX * pixelWidth - 2, SY, 0, HEIGHT + 16, sprtWidth + 4, 16);
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// Draw the sprite
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u8 frame = g_bMoving ? ((g_Frame / 4) % 6) : 4;
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VDP_CommandLMMM(sprtWidth * frame, HEIGHT, SX * pixelWidth, SY, sprtWidth, 16, VDP_OP_TIMP);
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SX0 = SX;
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SY0 = SY;
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}
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//-----------------------------------------------------------------------------
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// VBlank interrupt
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void VDP_InterruptHandler()
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{
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g_VBlank = 1;
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}
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//-----------------------------------------------------------------------------
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// Wait for V-Blank period
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void WaitVBlank()
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{
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while (g_VBlank == 0) {}
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g_VBlank = 0;
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g_Frame++;
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}
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//=============================================================================
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// MAIN LOOP
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//=============================================================================
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//-----------------------------------------------------------------------------
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// Program entry point
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void main()
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{
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// Precalc
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for (u16 i = 0; i < 16*16*6; ++i)
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{
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u8 c, b = g_DataBmp4b[i >> 1];
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if ((i & 0x1) == 0)
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c = b >> 4;
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else // if ((i & 0x1) == 1)
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c = b & 0x0F;
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if (c == 3)
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c = 13;
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g_LMMC4b[i] = c;
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g_LMMC4b_2[2*i+0] = c;
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g_LMMC4b_2[2*i+1] = c;
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}
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for (u16 i = 0; i < 16*16*6; ++i)
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{
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u8 c, b = g_DataBmp2b[i >> 2];
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if ((i & 0x3) == 0)
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c = b >> 6;
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else if ((i & 0x3) == 1)
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c = b >> 4;
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else if ((i & 0x3) == 2)
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c = b >> 2;
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else // if ((i & 0x3) == 3)
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c = b;
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g_LMMC2b_2[2*i+0] = c & 0x03;
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g_LMMC2b_2[2*i+1] = c & 0x03;
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}
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// Init
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g_SrcModeIndex = 3;
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SX = 64;
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SY = 64;
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InitScreen();
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bool bContinue = TRUE;
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while (bContinue)
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{
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WaitVBlank();
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DisplaySprite();
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const struct ScreenSetting* src = &g_Settings[g_SrcModeIndex];
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Print_SetPosition(src->Width - 8, 2);
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Print_DrawChar(chrAnim[g_Frame & 0x03]);
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u8 row = Keyboard_Read(KEY_ROW(KEY_DOWN));
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if ((row & KEY_FLAG(KEY_SPACE)) == 0)
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{
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if (g_SrcModeIndex < numberof(g_Settings) - 1)
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g_SrcModeIndex++;
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else
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g_SrcModeIndex = 0;
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InitScreen();
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}
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g_bMoving = FALSE;
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if ((row & KEY_FLAG(KEY_LEFT)) == 0)
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{
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if (SX > 2)
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{
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SX--;
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g_bMoving = TRUE;
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}
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}
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else if ((row & KEY_FLAG(KEY_RIGHT)) == 0)
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{
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if (SX < 256-16-2)
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{
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SX++;
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g_bMoving = TRUE;
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}
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}
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if ((row & KEY_FLAG(KEY_UP)) == 0)
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{
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if (SY > 2)
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{
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SY--;
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g_bMoving = TRUE;
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}
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}
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else if ((row & KEY_FLAG(KEY_DOWN)) == 0)
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{
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if (SY < HEIGHT-16-2)
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{
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SY++;
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g_bMoving = TRUE;
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}
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}
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if (Keyboard_IsKeyPressed(KEY_ESC))
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bContinue = FALSE;
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}
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} |