ed/HandmadeHero
1
0
Fork 0
mirror of https://github.com/Ed94/HandmadeHero.git synced 2025-11-03 15:26:12 -08:00
Code Issues Packages Projects Releases Wiki Activity

Day 9 completed

Browse Source
This commit is contained in:
Edward R. Gonzalez
2023-09-10 19:56:09 -04:00
parent d87eb51698
commit 3a0d1124c9
3 changed files with 196 additions and 99 deletions
Download Patch File Download Diff File Expand all files Collapse all files

273
project/handmade_win32.cpp
View File

@@ -11,11 +11,14 @@
#include "grime.h"
#include "macros.h"
#include "types.h"
#include "math_constants.h"
// #include <stdio.h>
#include "win32.h"
// TODO : Implement sound ourselves
#include <math.h>
#include "win32.h"
// Using this to get dualsense controllers
#include "JoyShockLibrary/JoyShockLibrary.h"
@@ -67,18 +70,19 @@ struct WinDimensions
u32 Height;
};
global OffscreenBuffer BackBuffer;
global WinDimensions WindowDimensions;
global LPDIRECTSOUNDBUFFER DS_SecondaryBuffer;
global s32 DS_SecondaryBufferSize;
HRESULT WINAPI
DirectSoundCreate(LPGUID lpGuid, LPDIRECTSOUND* ppDS, LPUNKNOWN pUnkOuter );
using DirectSoundCreateFn = HRESULT WINAPI (LPGUID lpGuid, LPDIRECTSOUND* ppDS, LPUNKNOWN pUnkOuter );
global DirectSoundCreateFn* direct_sound_create;
global OffscreenBuffer BackBuffer;
global WinDimensions WindowDimensions;
global LPDIRECTSOUNDBUFFER DS_SecondaryBuffer;
global s32 DS_SecondaryBuffer_Size;
global s32 DS_SecondaryBuffer_SamplesPerSecond;
global s32 DS_SecondaryBuffer_BytesPerSample;
internal void
init_sound(HWND window_handle, s32 samples_per_second, s32 buffer_size )
@@ -152,6 +156,87 @@ init_sound(HWND window_handle, s32 samples_per_second, s32 buffer_size )
}
}
struct DS_SoundOutputTest
{
DWORD IsPlaying;
u32 RunningSampleIndex;
s32 WaveToneHz;
s32 WavePeriod;
s32 ToneVolume;
s32 LatencySampleCount;
};
using DS_FillSoundBuffer_GetSampleValueFn = s16( DS_SoundOutputTest* sound_output );
internal s16
square_wave_sample_value( DS_SoundOutputTest* sound_output )
{
s16 sample_value = (sound_output->RunningSampleIndex / (sound_output->WavePeriod /2)) % 2 ?
sound_output->ToneVolume : - sound_output->ToneVolume;
return sample_value;
}
internal s16
sine_wave_sample_value( DS_SoundOutputTest* sound_output )
{
local_persist f32 time = 0.f;
f32 sine_value = sinf( time );
s16 sample_value = scast(u16, sine_value * sound_output->ToneVolume);
time += TAU * 1.0f / scast(f32, sound_output->WavePeriod );
return sample_value;
}
internal void
ds_fill_soundbuffer_region( LPVOID region, DWORD region_size
, DS_SoundOutputTest* sound_output, DS_FillSoundBuffer_GetSampleValueFn* get_sample_value )
{
DWORD region_sample_count = region_size / DS_SecondaryBuffer_BytesPerSample;
s16* sample_out = rcast( s16*, region );
for ( DWORD sample_index = 0; sample_index < region_sample_count; ++ sample_index )
{
s16 sample_value = get_sample_value( sound_output );
++ sound_output->RunningSampleIndex;
*sample_out = sample_value;
++ sample_out;
*sample_out = sample_value;
++ sample_out;
}
}
internal void
ds_fill_sound_buffer_test( DS_SoundOutputTest* sound_output, DWORD byte_to_lock, DWORD bytes_to_write, DS_FillSoundBuffer_GetSampleValueFn* get_sample_value )
{
LPVOID region_1;
DWORD region_1_size;
LPVOID region_2;
DWORD region_2_size;
HRESULT ds_lock_result = DS_SecondaryBuffer->Lock( byte_to_lock, bytes_to_write
, & region_1, & region_1_size
, & region_2, & region_2_size
, 0 );
if ( ! SUCCEEDED( ds_lock_result ) )
{
return;
}
// TODO : Assert that region sizes are valid
ds_fill_soundbuffer_region( region_1, region_1_size, sound_output, get_sample_value );
ds_fill_soundbuffer_region( region_2, region_2_size, sound_output, get_sample_value );
if ( ! SUCCEEDED( DS_SecondaryBuffer->Unlock( region_1, region_1_size, region_2, region_2_size ) ))
{
return;
}
}
internal WinDimensions
get_window_dimensions( HWND window_handle )
{
@@ -484,12 +569,23 @@ WinMain(
WinDimensions dimensions = get_window_dimensions( window_handle );
resize_dib_section( &BackBuffer, 1280, 720 );
s32 ds_samples = 48000;
s32 ds_samples_per_second = ds_samples * sizeof(s16) * 2;
s32 ds_bytes_per_sample = sizeof(s16) * 2;
DS_SecondaryBufferSize = ds_samples_per_second * ds_bytes_per_sample;
DS_SoundOutputTest sound_output;
sound_output.IsPlaying = 0;
DS_SecondaryBuffer_SamplesPerSecond = 48000;
DS_SecondaryBuffer_BytesPerSample = sizeof(s16) * 2;
init_sound( window_handle, ds_samples, DS_SecondaryBufferSize );
DS_SecondaryBuffer_Size = DS_SecondaryBuffer_SamplesPerSecond * DS_SecondaryBuffer_BytesPerSample;
init_sound( window_handle, DS_SecondaryBuffer_SamplesPerSecond, DS_SecondaryBuffer_Size );
// Wave Sound Test
bool wave_switch = false;
sound_output.RunningSampleIndex = 0;
sound_output.WaveToneHz = 262;
sound_output.WavePeriod = DS_SecondaryBuffer_SamplesPerSecond / sound_output.WaveToneHz;
sound_output.ToneVolume = 3000;
sound_output.LatencySampleCount = DS_SecondaryBuffer_SamplesPerSecond / 15;
ds_fill_sound_buffer_test( & sound_output, 0, sound_output.LatencySampleCount * DS_SecondaryBuffer_BytesPerSample, & sine_wave_sample_value );
DS_SecondaryBuffer->Play( 0, 0, DSBPLAY_LOOPING );
// Graphics & Input Test
u32 x_offset = 0;
@@ -498,29 +594,23 @@ WinMain(
// Controller State
bool xinput_detected = false;
u32 dpad_up = false;
u32 dpad_down = false;
u32 dpad_left = false;
u32 dpad_right = false;
u32 start = false;
u32 back = false;
u32 left_shoulder = false;
u32 right_shoulder = false;
u32 btn_a_button = false;
u32 btn_b_button = false;
u32 btn_x_button = false;
u32 btn_y_button = false;
b32 dpad_up = false;
b32 dpad_down = false;
b32 dpad_left = false;
b32 dpad_right = false;
b32 start = false;
b32 back = false;
b32 left_shoulder = false;
b32 right_shoulder = false;
b32 btn_a = false;
b32 btn_b = false;
b32 btn_x = false;
b32 btn_y = false;
u16 stick_left_x = 0;
u16 stick_left_y = 0;
u16 stick_right_x = 0;
u16 stick_right_y = 0;
// Square Wave - Sound Test
u32 ds_running_sample_index = 0;
s32 square_wave_tone_hz = 262;
s32 square_wave_period = ds_samples_per_second / square_wave_tone_hz;
s32 half_square_wave_period = square_wave_period / 2;
s32 square_wave_tone_volume = 3000;
// TODO : Add sine wave test
@@ -564,10 +654,10 @@ WinMain(
back = pad->wButtons & XINPUT_GAMEPAD_BACK;
left_shoulder = pad->wButtons & XINPUT_GAMEPAD_LEFT_SHOULDER;
right_shoulder = pad->wButtons & XINPUT_GAMEPAD_RIGHT_SHOULDER;
btn_a_button = pad->wButtons & XINPUT_GAMEPAD_A;
btn_b_button = pad->wButtons & XINPUT_GAMEPAD_B;
btn_x_button = pad->wButtons & XINPUT_GAMEPAD_X;
btn_y_button = pad->wButtons & XINPUT_GAMEPAD_Y;
btn_a = pad->wButtons & XINPUT_GAMEPAD_A;
btn_b = pad->wButtons & XINPUT_GAMEPAD_B;
btn_x = pad->wButtons & XINPUT_GAMEPAD_X;
btn_y = pad->wButtons & XINPUT_GAMEPAD_Y;
stick_left_x = pad->sThumbLX;
stick_left_y = pad->sThumbLY;
@@ -598,10 +688,10 @@ WinMain(
back = state.buttons & JSMASK_MINUS;
left_shoulder = state.buttons & JSMASK_L;
right_shoulder = state.buttons & JSMASK_R;
btn_a_button = state.buttons & JSMASK_S;
btn_b_button = state.buttons & JSMASK_E;
btn_x_button = state.buttons & JSMASK_W;
btn_y_button = state.buttons & JSMASK_N;
btn_a = state.buttons & JSMASK_S;
btn_b = state.buttons & JSMASK_E;
btn_x = state.buttons & JSMASK_W;
btn_y = state.buttons & JSMASK_N;
stick_left_x = state.stickLX;
stick_left_y = state.stickLY;
@@ -613,8 +703,6 @@ WinMain(
x_offset -= dpad_left;
y_offset += dpad_up;
y_offset -= dpad_down;
// x_offset += left_stick_x;
// y_offset += left_stick_y;
if ( start )
{
@@ -657,13 +745,33 @@ WinMain(
// Audio
do {
if ( btn_y_button )
if ( btn_y )
{
square_wave_tone_volume += 10;
sound_output.ToneVolume += 10;
}
if ( btn_b_button )
if ( btn_b )
{
square_wave_tone_volume -= 10;
sound_output.ToneVolume -= 10;
}
if ( btn_x )
{
sound_output.WaveToneHz += 1;
sound_output.WavePeriod = DS_SecondaryBuffer_SamplesPerSecond / sound_output.WaveToneHz;
}
if ( btn_a )
{
sound_output.WaveToneHz -= 1;
sound_output.WavePeriod = DS_SecondaryBuffer_SamplesPerSecond / sound_output.WaveToneHz;
}
if ( back )
{
wave_switch ^= true;
}
DWORD ds_status = 0;
if ( SUCCEEDED( DS_SecondaryBuffer->GetStatus( & ds_status ) ) )
{
sound_output.IsPlaying = ds_status & DSBSTATUS_PLAYING;
}
DWORD ds_play_cursor;
@@ -673,76 +781,43 @@ WinMain(
break;
}
DWORD byte_to_lock = ds_running_sample_index * ds_bytes_per_sample % DS_SecondaryBufferSize;
DWORD target_cursor = (ds_play_cursor + sound_output.LatencySampleCount * DS_SecondaryBuffer_BytesPerSample) % DS_SecondaryBuffer_Size;
DWORD byte_to_lock = (sound_output.RunningSampleIndex * DS_SecondaryBuffer_BytesPerSample) % DS_SecondaryBuffer_Size;
DWORD bytes_to_write;
if ( byte_to_lock == ds_play_cursor )
if ( byte_to_lock == target_cursor )
{
// At play cursor
bytes_to_write = DS_SecondaryBufferSize;
// We are in the middle of playing. Wait for the write cursor to catch up.
bytes_to_write = 0;
}
else if ( byte_to_lock > ds_play_cursor)
else if ( byte_to_lock > target_cursor)
{
// Infront of play cursor |--play--byte_to_write-->--|
bytes_to_write = DS_SecondaryBufferSize - byte_to_lock;
bytes_to_write += ds_play_cursor;
bytes_to_write = DS_SecondaryBuffer_Size - byte_to_lock;
bytes_to_write += target_cursor;
}
else
{
// Behind play cursor |--byte_to_write-->--play--|
bytes_to_write = ds_play_cursor - byte_to_lock;
bytes_to_write = target_cursor - byte_to_lock;
}
bytes_to_write = max(bytes_to_write, 1);
if ( wave_switch )
{
ds_fill_sound_buffer_test( & sound_output, byte_to_lock, bytes_to_write, square_wave_sample_value );
}
else
{
ds_fill_sound_buffer_test( & sound_output, byte_to_lock, bytes_to_write, sine_wave_sample_value );
}
LPVOID region_1;
DWORD region_1_size;
LPVOID region_2;
DWORD region_2_size;
HRESULT ds_lock_result = DS_SecondaryBuffer->Lock( byte_to_lock, bytes_to_write
, & region_1, & region_1_size
, & region_2, & region_2_size
, 0 );
if ( ! SUCCEEDED( ds_lock_result ) )
#if 1
if ( sound_output.IsPlaying )
{
break;
}
// TODO : Assert that region sizes are valid
// TODO : Collapse these loops
DWORD region_1_sample_count = region_1_size / ds_bytes_per_sample;
s16* sample_out = rcast( s16*, region_1 );
for ( DWORD sample_index = 0; sample_index < region_1_sample_count; ++ sample_index )
{
s16 sample_value = (ds_running_sample_index / half_square_wave_period) % 2 ?
square_wave_tone_volume : -square_wave_tone_volume;
++ ds_running_sample_index;
*sample_out = sample_value;
++ sample_out;
*sample_out = sample_value;
++ sample_out;
}
DWORD region_2_sample_count = region_2_size / ds_bytes_per_sample;
sample_out = rcast( s16*, region_2 );
for ( DWORD sample_index = 0; sample_index < region_2_sample_count; ++ sample_index )
{
s16 sample_value = (ds_running_sample_index / half_square_wave_period) % 2 ?
square_wave_tone_volume : -square_wave_tone_volume;
++ ds_running_sample_index;
*sample_out = sample_value;
++ sample_out;
*sample_out = sample_value;
++ sample_out;
}
DS_SecondaryBuffer->Unlock( region_1, region_1_size, region_2, region_2_size );
#endif
DS_SecondaryBuffer->Play( 0, 0, DSBPLAY_LOOPING );
} while(0);
}

22
project/platform/math_constants.h Normal file
View File

@@ -0,0 +1,22 @@
# define CONSTANTS
# define EPSILON 1.19209290e-7f
# define ZERO 0.0f
# define ONE 1.0f
# define TWO_THIRDS 0.666666666666666666666666666666666666667f
# define TAU 6.28318530717958647692528676655900576f
# define PI 3.14159265358979323846264338327950288f
# define ONE_OVER_TAU 0.636619772367581343075535053490057448f
# define ONE_OVER_PI 0.159154943091895335768883763372514362f
# define TAU_OVER_2 3.14159265358979323846264338327950288f
# define TAU_OVER_4 1.570796326794896619231321691639751442f
# define TAU_OVER_8 0.785398163397448309615660845819875721f
# define E 2.71828182845904523536f
# define SQRT_TWO 1.41421356237309504880168872420969808f
# define SQRT_THREE 1.73205080756887729352744634150587236f
# define SQRT_FIVE 2.23606797749978969640917366873127623f
# define LOG_TWO 0.693147180559945309417232121458176568f
# define LOG_TEN 2.30258509299404568401799145468436421f

BIN
scripts/handmade.rdbg
View File

Binary file not shown.