ikolokolnikov/handmadehero
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Half of day 39 complete.

Browse Source
This commit is contained in:
igor
2026-04-22 20:39:29 -07:00
parent 10ecc72e2f
commit 0149719030
27 changed files with 104 additions and 29 deletions
Download Patch File Download Diff File Expand all files Collapse all files
handmade.c
+67 -21
View File
@@ -84,8 +84,11 @@ static void DrawRectangle(game_offscreen_buffer *Buffer, F32 RealMinX, F32 RealM
}
}
static void DrawBitmap(game_offscreen_buffer *Buffer, loaded_bitmap *Bitmap, F32 RelX, F32 RelY)
static void DrawBitmap(game_offscreen_buffer *Buffer, loaded_bitmap *Bitmap, F32 RelX, F32 RelY, S32 AlignX, S32 AlignY)
{
RelX -= (F32)AlignX;
RelY -= (F32)AlignY;
S32 MinX = RoundF32toS32(RelX);
S32 MinY = RoundF32toS32(RelY);
S32 MaxX = RoundF32toS32(RelX + (F32)Bitmap->Width);
@@ -112,12 +115,12 @@ static void DrawBitmap(game_offscreen_buffer *Buffer, loaded_bitmap *Bitmap, F32
for(S32 X = MinX; X < MaxX; X++) {
F32 A = (F32)((*Source >> 24) & 0xFF) / 255.0f;
F32 SR = (F32)((*Source >> 16) & 0xFF);
F32 SG = (F32)((*Source >> 8) & 0xFF);
F32 SB = (F32)((*Source >> 0) & 0xFF);
F32 SG = (F32)((*Source >> 8) & 0xFF);
F32 SB = (F32)((*Source >> 0) & 0xFF);
F32 DR = (F32)((*Dest >> 16) & 0xFF);
F32 DG = (F32)((*Dest >> 8) & 0xFF);
F32 DB = (F32)((*Dest >> 0) & 0xFF);
F32 DG = (F32)((*Dest >> 8) & 0xFF);
F32 DB = (F32)((*Dest >> 0) & 0xFF);
// TODO: This should be replaced by premultiplied alpha.
F32 R = (1.0f-A)*DR + A*SR;
@@ -186,7 +189,7 @@ static loaded_bitmap DEBUGLoadBMP(thread_context *Thread, debug_read_file_result
bit_scan_result GreenShift = FindLeastSignificantSetBit(GreenMask);
bit_scan_result BlueShift = FindLeastSignificantSetBit(BlueMask);
bit_scan_result AlphaShift = FindLeastSignificantSetBit(AlphaMask);
ASSERT(RedShift.Found);
ASSERT(GreenShift.Found);
ASSERT(BlueShift.Found);
@@ -200,7 +203,8 @@ static loaded_bitmap DEBUGLoadBMP(thread_context *Thread, debug_read_file_result
*SourceDest = ((((C >> AlphaShift.Index) & 0xFF) << 24) |
(((C >> RedShift.Index ) & 0xFF) << 16) |
(((C >> GreenShift.Index) & 0xFF) << 8) |
(((C >> BlueShift.Index ) & 0xFF) << 8));
(((C >> BlueShift.Index ) & 0xFF) << 0));
SourceDest++;
}
}
}
@@ -224,10 +228,40 @@ void UpdateAndRender(thread_context *Thread, game_memory *Memory, game_input *In
GameState = (game_state *)Memory->PermanentStorage;
if(!Memory->IsInitialized) {
GameState->Backdrop = DEBUGLoadBMP(Thread, Memory->DEBUGPlatformReadEntireFile, "data/background.bmp");
GameState->HeroHead = DEBUGLoadBMP(Thread, Memory->DEBUGPlatformReadEntireFile, "data/hero_head_front.bmp");;
GameState->HeroCape = DEBUGLoadBMP(Thread, Memory->DEBUGPlatformReadEntireFile, "data/hero_cape_front.bmp");;
GameState->HeroTorso = DEBUGLoadBMP(Thread, Memory->DEBUGPlatformReadEntireFile, "data/hero_torso_front.bmp");;
GameState->Backdrop = DEBUGLoadBMP(Thread, Memory->DEBUGPlatformReadEntireFile, "data/test_background.bmp");
hero_bitmaps *Bitmap;
Bitmap = &GameState->HeroBitmaps[0];
Bitmap->AlignX = 72;
Bitmap->AlignY = 182;
Bitmap->Head = DEBUGLoadBMP(Thread, Memory->DEBUGPlatformReadEntireFile, "data/test_hero_right_head.bmp");
Bitmap->Cape = DEBUGLoadBMP(Thread, Memory->DEBUGPlatformReadEntireFile, "data/test_hero_right_cape.bmp");
Bitmap->Torso = DEBUGLoadBMP(Thread, Memory->DEBUGPlatformReadEntireFile, "data/test_hero_right_torso.bmp");
Bitmap++;
Bitmap->AlignX = 72;
Bitmap->AlignY = 182;
Bitmap->Head = DEBUGLoadBMP(Thread, Memory->DEBUGPlatformReadEntireFile, "data/test_hero_back_head.bmp");
Bitmap->Cape = DEBUGLoadBMP(Thread, Memory->DEBUGPlatformReadEntireFile, "data/test_hero_back_cape.bmp");
Bitmap->Torso = DEBUGLoadBMP(Thread, Memory->DEBUGPlatformReadEntireFile, "data/test_hero_back_torso.bmp");
Bitmap++;
Bitmap->AlignX = 72;
Bitmap->AlignY = 182;
Bitmap->Head = DEBUGLoadBMP(Thread, Memory->DEBUGPlatformReadEntireFile, "data/test_hero_left_head.bmp");
Bitmap->Cape = DEBUGLoadBMP(Thread, Memory->DEBUGPlatformReadEntireFile, "data/test_hero_left_cape.bmp");
Bitmap->Torso = DEBUGLoadBMP(Thread, Memory->DEBUGPlatformReadEntireFile, "data/test_hero_left_torso.bmp");
Bitmap++;
Bitmap->AlignX = 72;
Bitmap->AlignY = 182;
Bitmap->Head = DEBUGLoadBMP(Thread, Memory->DEBUGPlatformReadEntireFile, "data/test_hero_front_head.bmp");
Bitmap->Cape = DEBUGLoadBMP(Thread, Memory->DEBUGPlatformReadEntireFile, "data/test_hero_front_cape.bmp");
Bitmap->Torso = DEBUGLoadBMP(Thread, Memory->DEBUGPlatformReadEntireFile, "data/test_hero_front_torso.bmp");
GameState->CameraP.AbsTileX = 17 / 2;
GameState->CameraP.AbsTileY = 9 / 2;
GameState->PlayerP.AbsTileX = 2;
GameState->PlayerP.AbsTileY = 3;
@@ -376,15 +410,19 @@ void UpdateAndRender(thread_context *Thread, game_memory *Memory, game_input *In
if(Controller->MoveUp.EndedDown) {
dPlayerY = 1.0f;
GameState->FacingDirection = 1;
}
if(Controller->MoveDown.EndedDown) {
dPlayerY = -1.0f;
GameState->FacingDirection = 3;
}
if(Controller->MoveLeft.EndedDown) {
dPlayerX = -1.0f;
GameState->FacingDirection = 2;
}
if(Controller->MoveRight.EndedDown) {
dPlayerX = 1.0f;
GameState->FacingDirection = 0;
}
F32 PlayerSpeed = 2.0f;
@@ -428,17 +466,17 @@ void UpdateAndRender(thread_context *Thread, game_memory *Memory, game_input *In
DrawRectangle(Buffer, 0.0f, 0.0f, (F32)Buffer->Width, (F32)Buffer->Height, 0.0f, 1.0f, 0.0f);
DrawBitmap(Buffer, &GameState->Backdrop, 0.0f, 0.0f);
DrawBitmap(Buffer, &GameState->Backdrop, 0.0f, 0.0f, 0, 0);
F32 ScreenCenterX = 0.5f * (F32)Buffer->Width;
F32 ScreenCenterY = 0.5f * (F32)Buffer->Height;
for(S32 RelRow = -10; RelRow < 10; RelRow++) {
for(S32 RelColumn = -20; RelColumn < 20; RelColumn++) {
U32 Column = GameState->PlayerP.AbsTileX + RelColumn;
U32 Row = GameState->PlayerP.AbsTileY + RelRow;
U32 Column = GameState->CameraP.AbsTileX + RelColumn;
U32 Row = GameState->CameraP.AbsTileY + RelRow;
U32 TileID = GetTileValue(TileMap, Column, Row, GameState->PlayerP.AbsTileZ);
U32 TileID = GetTileValue(TileMap, Column, Row, GameState->CameraP.AbsTileZ);
if(TileID > 1) {
F32 Gray = 0.5f;
@@ -450,13 +488,13 @@ void UpdateAndRender(thread_context *Thread, game_memory *Memory, game_input *In
Gray = 0.25f;
}
if((Column == GameState->PlayerP.AbsTileX) && (Row == GameState->PlayerP.AbsTileY)) {
if((Column == GameState->CameraP.AbsTileX) && (Row == GameState->CameraP.AbsTileY)) {
Gray = 0.0f;
}
F32 CenterX = ScreenCenterX - MetersToPixels*GameState->PlayerP.OffsetX + (F32)RelColumn*(F32)TileSideInPixels;
F32 CenterY = ScreenCenterY + MetersToPixels*GameState->PlayerP.OffsetY - (F32)RelRow*(F32)TileSideInPixels;
F32 CenterX = ScreenCenterX - MetersToPixels*GameState->CameraP.OffsetX + (F32)RelColumn*(F32)TileSideInPixels;
F32 CenterY = ScreenCenterY + MetersToPixels*GameState->CameraP.OffsetY - (F32)RelRow*(F32)TileSideInPixels;
F32 MinX = CenterX - 0.5f*(F32)TileSideInPixels;
F32 MinY = CenterY - 0.5f*(F32)TileSideInPixels;
F32 MaxX = CenterX + 0.5f*(F32)TileSideInPixels;
@@ -466,13 +504,21 @@ void UpdateAndRender(thread_context *Thread, game_memory *Memory, game_input *In
}
}
tile_map_difference Diff = SubtractInF32(TileMap, &GameState->PlayerP, &GameState->CameraP);
F32 PlayerR = 1.0f;
F32 PlayerG = 0.0f;
F32 PlayerB = 0.0f;
F32 PlayerLeft = ScreenCenterX - 0.5f * MetersToPixels*PlayerWidth;
F32 PlayerTop = ScreenCenterY - MetersToPixels*PlayerHeight;
F32 PlayerGroundPointX = ScreenCenterX + MetersToPixels*Diff.dX;
F32 PlayerGroundPointY = ScreenCenterY + MetersToPixels*Diff.dY;
F32 PlayerLeft = PlayerGroundPointX - 0.5f * MetersToPixels*PlayerWidth;
F32 PlayerTop = PlayerGroundPointY - MetersToPixels*PlayerHeight;
DrawRectangle(Buffer, PlayerLeft, PlayerTop, PlayerLeft + MetersToPixels*PlayerWidth, PlayerTop + MetersToPixels*PlayerHeight, PlayerR, PlayerG, PlayerB);
DrawBitmap(Buffer, &GameState->HeroHead, PlayerLeft, PlayerTop);
hero_bitmaps *Bitmap = &GameState->HeroBitmaps[GameState->FacingDirection];
DrawBitmap(Buffer, &Bitmap->Torso, PlayerGroundPointX, PlayerGroundPointY, Bitmap->AlignX, Bitmap->AlignY);
DrawBitmap(Buffer, &Bitmap->Cape, PlayerGroundPointX, PlayerGroundPointY, Bitmap->AlignX, Bitmap->AlignY);
DrawBitmap(Buffer, &Bitmap->Head, PlayerGroundPointX, PlayerGroundPointY, Bitmap->AlignX, Bitmap->AlignY);
GameOutputSound(GameState, SoundBuffer, 400);
}