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Added olcPixelGameEngine Introduction video

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Javidx9 6 years ago committed by GitHub
parent 91465cfff2
commit 0c1fda349c
1 changed files with 43 additions and 17 deletions
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      olcPixelGameEngine.h

60
olcPixelGameEngine.h
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@ -2,7 +2,7 @@
olcPixelGameEngine.h olcPixelGameEngine.h
+-------------------------------------------------------------+ +-------------------------------------------------------------+
| OneLoneCoder Pixel Game Engine v0.6 | | OneLoneCoder Pixel Game Engine v1.0 |
| "Like the command prompt console one, but not..." - javidx9 | | "Like the command prompt console one, but not..." - javidx9 |
+-------------------------------------------------------------+ +-------------------------------------------------------------+
@ -91,7 +91,7 @@
Relevant Videos Relevant Videos
~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~
https://youtu.be/kRH6oJLFYxY Introducing olcPixelGameEngine
Compiling in Linux Compiling in Linux
~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~
@ -143,7 +143,7 @@
// Include WinAPI // Include WinAPI
#define NOMINMAX //#define NOMINMAX
#include <windows.h> #include <windows.h>
#include <gdiplus.h> #include <gdiplus.h>
@ -207,7 +207,8 @@ namespace olc // All OneLoneCoder stuff will now exist in the "olc" namespace
CYAN(0, 255, 255), DARK_CYAN(0, 128, 128), VERY_DARK_CYAN(0, 64, 64), CYAN(0, 255, 255), DARK_CYAN(0, 128, 128), VERY_DARK_CYAN(0, 64, 64),
BLUE(0, 0, 255), DARK_BLUE(0, 0, 128), VERY_DARK_BLUE(0, 0, 64), BLUE(0, 0, 255), DARK_BLUE(0, 0, 128), VERY_DARK_BLUE(0, 0, 64),
MAGENTA(255, 0, 255), DARK_MAGENTA(128, 0, 128), VERY_DARK_MAGENTA(64, 0, 64), MAGENTA(255, 0, 255), DARK_MAGENTA(128, 0, 128), VERY_DARK_MAGENTA(64, 0, 64),
BLACK(0, 0, 0); BLACK(0, 0, 0),
BLANK(0, 0, 0, 0);
enum rcode enum rcode
{ {
@ -238,6 +239,7 @@ namespace olc // All OneLoneCoder stuff will now exist in the "olc" namespace
public: public:
olc::rcode LoadFromFile(std::string sImageFile); olc::rcode LoadFromFile(std::string sImageFile);
olc::rcode LoadFromSprFile(std::string sImageFile);
public: public:
int32_t width = 0; int32_t width = 0;
@ -319,30 +321,32 @@ namespace olc // All OneLoneCoder stuff will now exist in the "olc" namespace
// olc::Pixel::MASK = Transparent if alpha is < 255 // olc::Pixel::MASK = Transparent if alpha is < 255
// olc::Pixel::ALPHA = Full transparency // olc::Pixel::ALPHA = Full transparency
void SetPixelMode(Pixel::Mode m); void SetPixelMode(Pixel::Mode m);
// Change the blend factor form between 0.0f to 1.0f;
void SetPixelBlend(float fBlend);
// Draws a single Pixel // Draws a single Pixel
virtual void Draw(int32_t x, int32_t y, Pixel p); virtual void Draw(int32_t x, int32_t y, Pixel p = olc::WHITE);
// Draws a line from (x1,y1) to (x2,y2) // Draws a line from (x1,y1) to (x2,y2)
void DrawLine(int32_t x1, int32_t y1, int32_t x2, int32_t y2, Pixel p); void DrawLine(int32_t x1, int32_t y1, int32_t x2, int32_t y2, Pixel p = olc::WHITE);
// Draws a circle located at (x,y) with radius // Draws a circle located at (x,y) with radius
void DrawCircle(int32_t x, int32_t y, int32_t radius, Pixel p); void DrawCircle(int32_t x, int32_t y, int32_t radius, Pixel p = olc::WHITE);
// Fills a circle located at (x,y) with radius // Fills a circle located at (x,y) with radius
void FillCircle(int32_t x, int32_t y, int32_t radius, Pixel p); void FillCircle(int32_t x, int32_t y, int32_t radius, Pixel p = olc::WHITE);
// Draws a rectangle at (x,y) to (x+w,y+h) // Draws a rectangle at (x,y) to (x+w,y+h)
void DrawRect(int32_t x, int32_t y, int32_t w, int32_t h, Pixel p); void DrawRect(int32_t x, int32_t y, int32_t w, int32_t h, Pixel p = olc::WHITE);
// Fills a rectangle at (x,y) to (x+w,y+h) // Fills a rectangle at (x,y) to (x+w,y+h)
void FillRect(int32_t x, int32_t y, int32_t w, int32_t h, Pixel p); void FillRect(int32_t x, int32_t y, int32_t w, int32_t h, Pixel p = olc::WHITE);
// Draws a triangle between points (x1,y1), (x2,y2) and (x3,y3) // Draws a triangle between points (x1,y1), (x2,y2) and (x3,y3)
void DrawTriangle(int32_t x1, int32_t y1, int32_t x2, int32_t y2, int32_t x3, int32_t y3, Pixel p); void DrawTriangle(int32_t x1, int32_t y1, int32_t x2, int32_t y2, int32_t x3, int32_t y3, Pixel p = olc::WHITE);
// Flat fills a triangle between points (x1,y1), (x2,y2) and (x3,y3) // Flat fills a triangle between points (x1,y1), (x2,y2) and (x3,y3)
void FillTriangle(int32_t x1, int32_t y1, int32_t x2, int32_t y2, int32_t x3, int32_t y3, Pixel p); void FillTriangle(int32_t x1, int32_t y1, int32_t x2, int32_t y2, int32_t x3, int32_t y3, Pixel p = olc::WHITE);
// Draws an entire sprite at location (x,y) // Draws an entire sprite at location (x,y)
void DrawSprite(int32_t x, int32_t y, Sprite *sprite); void DrawSprite(int32_t x, int32_t y, Sprite *sprite);
// Draws an area of a sprite at location (x,y), where the // Draws an area of a sprite at location (x,y), where the
// selected area is (ox,oy) to (ox+w,oy+h) // selected area is (ox,oy) to (ox+w,oy+h)
void DrawPartialSprite(int32_t x, int32_t y, Sprite *sprite, int32_t ox, int32_t oy, int32_t w, int32_t h); void DrawPartialSprite(int32_t x, int32_t y, Sprite *sprite, int32_t ox, int32_t oy, int32_t w, int32_t h);
// Draws a single line of text // Draws a single line of text
void DrawString(int32_t x, int32_t y, std::string sText); void DrawString(int32_t x, int32_t y, std::string sText, Pixel col = olc::WHITE);
public: // Branding public: // Branding
std::string sAppName; std::string sAppName;
@ -351,6 +355,7 @@ namespace olc // All OneLoneCoder stuff will now exist in the "olc" namespace
Sprite *pDefaultDrawTarget = nullptr; Sprite *pDefaultDrawTarget = nullptr;
Sprite *pDrawTarget = nullptr; Sprite *pDrawTarget = nullptr;
Pixel::Mode nPixelMode = Pixel::NORMAL; Pixel::Mode nPixelMode = Pixel::NORMAL;
float fBlendFactor = 1.0f;
uint32_t nScreenWidth = 256; uint32_t nScreenWidth = 256;
uint32_t nScreenHeight = 240; uint32_t nScreenHeight = 240;
uint32_t nPixelWidth = 4; uint32_t nPixelWidth = 4;
@ -474,6 +479,11 @@ namespace olc
if (pColData) delete[] pColData; if (pColData) delete[] pColData;
} }
olc::rcode Sprite::LoadFromSprFile(std::string sImageFile)
{
return olc::FAIL;
}
olc::rcode Sprite::LoadFromFile(std::string sImageFile) olc::rcode Sprite::LoadFromFile(std::string sImageFile)
{ {
#ifdef _WIN32 #ifdef _WIN32
@ -760,7 +770,7 @@ namespace olc
if (nPixelMode == Pixel::ALPHA) if (nPixelMode == Pixel::ALPHA)
{ {
Pixel d = pDrawTarget->GetPixel(x, y); Pixel d = pDrawTarget->GetPixel(x, y);
float a = (float)p.a / 255.0f; float a = (float)(p.a / 255.0f) * fBlendFactor;
float c = 1.0f - a; float c = 1.0f - a;
float r = a * (float)p.r + c * (float)d.r; float r = a * (float)p.r + c * (float)d.r;
float g = a * (float)p.g + c * (float)d.g; float g = a * (float)p.g + c * (float)d.g;
@ -1079,12 +1089,13 @@ namespace olc
} }
} }
void PixelGameEngine::DrawString(int32_t x, int32_t y, std::string sText) void PixelGameEngine::DrawString(int32_t x, int32_t y, std::string sText, Pixel col)
{ {
int32_t sx = 0; int32_t sx = 0;
int32_t sy = 0; int32_t sy = 0;
Pixel::Mode m = nPixelMode; Pixel::Mode m = nPixelMode;
SetPixelMode(Pixel::MASK); if(col.ALPHA != 255) SetPixelMode(Pixel::ALPHA);
else SetPixelMode(Pixel::MASK);
for (auto c : sText) for (auto c : sText)
{ {
if (c == '\n') if (c == '\n')
@ -1095,7 +1106,15 @@ namespace olc
{ {
int32_t ox = (c - 32) % 16; int32_t ox = (c - 32) % 16;
int32_t oy = (c - 32) / 16; int32_t oy = (c - 32) / 16;
DrawPartialSprite(x + sx, y + sy, fontSprite, ox * 8, oy * 8, 8, 8); //DrawPartialSprite(x + sx, y + sy, fontSprite, ox * 8, oy * 8, 8, 8);
for (int i = 0; i < 8; i++)
{
for (int j = 0; j < 8; j++)
{
if(fontSprite->GetPixel(i + ox * 8, j + oy * 8).r > 0)
Draw(x + sx + i, y + sy + j, col);
}
}
sx += 8; sx += 8;
} }
} }
@ -1107,6 +1126,13 @@ namespace olc
nPixelMode = m; nPixelMode = m;
} }
void PixelGameEngine::SetPixelBlend(float fBlend)
{
fBlendFactor = fBlend;
if (fBlendFactor < 0.0f) fBlendFactor = 0.0f;
if (fBlendFactor > 1.0f) fBlendFactor = 1.0f;
}
// User must override these functions as required. I have not made // User must override these functions as required. I have not made
// them abstract because I do need a default behaviour to occur if // them abstract because I do need a default behaviour to occur if
// they are not overwritten // they are not overwritten

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