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CSurface.cpp
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#include "CSurface.h"
#include "CGame.h"
#include "CMap.h"
#include "Rect.h"
#include "SGE/sge_blib.h"
#include "SGE/sge_rotation.h"
#include "globals.h"
#include "gameData/EdgeDesc.h"
#include "gameData/TerrainDesc.h"
#include <algorithm>
#include <cassert>
#include <cmath>
namespace {
SDL_Rect rect2SDL_Rect(const Rect& rect)
{
Point<Sint16> origin(rect.getOrigin());
Point<Uint16> size(rect.getSize());
SDL_Rect result;
result.x = origin.x;
result.y = origin.y;
result.w = size.x;
result.h = size.y;
return result;
}
void DrawPreCalcFadedTexturedTrigon(SDL_Surface* dest, const Point16& p1, const Point16& p2, const Point16& p3, SDL_Surface* source,
const SDL_Rect& rect, Uint16 I1, Uint16 I2, Uint8 PreCalcPalettes[][256])
{
Sint16 right = rect.x + rect.w - 1;
Sint16 middle = rect.x + rect.w / Sint16(2);
Sint16 bottom = rect.y + rect.h - 1;
sge_PreCalcFadedTexturedTrigonColorKeys(dest, p1.x, p1.y, p2.x, p2.y, p3.x, p3.y, source, rect.x, rect.y, right, rect.y, middle, bottom,
I1, I2, I2, PreCalcPalettes, &source->format->colorkey, 1);
}
void DrawFadedTexturedTrigon(SDL_Surface* dest, const Point16& p1, const Point16& p2, const Point16& p3, SDL_Surface* source,
const SDL_Rect& rect, Sint32 I1, Sint32 I2)
{
Sint16 right = rect.x + rect.w - 1;
Sint16 middle = rect.x + rect.w / Sint16(2);
Sint16 bottom = rect.y + rect.h - 1;
sge_FadedTexturedTrigonColorKeys(dest, p1.x, p1.y, p2.x, p2.y, p3.x, p3.y, source, rect.x, rect.y, right, rect.y, middle, bottom, I1,
I2, I2, &source->format->colorkey, 1);
}
} // namespace
bool CSurface::drawTextures = false;
bool CSurface::useOpenGL = false;
bool CSurface::Draw(SDL_Surface* Surf_Dest, SDL_Surface* Surf_Src, int X, int Y)
{
if(!Surf_Dest || !Surf_Src)
return false;
SDL_Rect DestR;
DestR.x = X;
DestR.y = Y;
SDL_BlitSurface(Surf_Src, nullptr, Surf_Dest, &DestR);
return true;
}
bool CSurface::Draw(SDL_Surface* Surf_Dest, SDL_Surface* Surf_Src, int X, int Y, int angle)
{
if(!Surf_Dest || !Surf_Src)
return false;
Uint16 px, py;
switch(angle)
{
case 90:
px = 0;
py = Surf_Src->h - 1;
break;
case 180:
px = Surf_Src->w - 1;
py = Surf_Src->h - 1;
break;
case 270:
px = Surf_Src->w - 1;
py = 0;
break;
default: return false;
}
sge_transform(Surf_Src, Surf_Dest, (float)angle, 1.0, 1.0, px, py, X, Y, SGE_TSAFE);
return true;
}
bool CSurface::Draw(SDL_Surface* Surf_Dest, SDL_Surface* Surf_Src, int X, int Y, int X2, int Y2, int W, int H)
{
if(!Surf_Dest || !Surf_Src)
return false;
SDL_Rect DestR;
DestR.x = X;
DestR.y = Y;
SDL_Rect SrcR;
SrcR.x = X2;
SrcR.y = Y2;
SrcR.w = W;
SrcR.h = H;
SDL_BlitSurface(Surf_Src, &SrcR, Surf_Dest, &DestR);
return true;
}
// this is the example function from the sdl-documentation to draw pixels
void CSurface::DrawPixel_Color(SDL_Surface* screen, int x, int y, Uint32 color)
{
int bpp = screen->format->BytesPerPixel;
/* Here p is the address to the pixel we want to retrieve */
Uint8* p = (Uint8*)screen->pixels + y * screen->pitch + x * bpp;
if(SDL_MUSTLOCK(screen))
SDL_LockSurface(screen);
switch(bpp)
{
case 1: *p = color; break;
case 2: *(Uint16*)p = color; break;
case 3:
if((SDL_BYTEORDER) == SDL_LIL_ENDIAN)
{
p[0] = color;
p[1] = color >> 8;
p[2] = color >> 16;
} else
{
p[2] = color;
p[1] = color >> 8;
p[0] = color >> 16;
}
break;
case 4: *(Uint32*)p = color; break;
}
if(SDL_MUSTLOCK(screen))
SDL_UnlockSurface(screen);
}
// this is the example function from the sdl-documentation to draw pixels
void CSurface::DrawPixel_RGB(SDL_Surface* screen, int x, int y, Uint8 R, Uint8 G, Uint8 B)
{
DrawPixel_Color(screen, x, y, SDL_MapRGB(screen->format, R, G, B));
}
void CSurface::DrawPixel_RGBA(SDL_Surface* screen, int x, int y, Uint8 R, Uint8 G, Uint8 B, Uint8 A)
{
DrawPixel_Color(screen, x, y, SDL_MapRGBA(screen->format, R, G, B, A));
}
Uint32 CSurface::GetPixel(SDL_Surface* surface, int x, int y)
{
int bpp = surface->format->BytesPerPixel;
/* Here p is the address to the pixel we want to retrieve */
Uint8* p = (Uint8*)surface->pixels + y * surface->pitch + x * bpp;
switch(bpp)
{
case 1: return *p;
case 2: return *(Uint16*)p;
case 3:
if((SDL_BYTEORDER) == SDL_BIG_ENDIAN)
return p[0] << 16 | p[1] << 8 | p[2];
else
return p[0] | p[1] << 8 | p[2] << 16;
case 4:
return *(Uint32*)p; //-V206
default:
return 0; /* shouldn't happen, but avoids warnings */
}
}
void CSurface::DrawTriangleField(SDL_Surface* display, const DisplayRectangle& displayRect, const bobMAP& myMap)
{
Uint16 width = myMap.width;
Uint16 height = myMap.height;
auto type = myMap.type;
MapNode tempP1, tempP2, tempP3;
// min size to avoid underflows
if(width < 8 || height < 8)
return;
assert(displayRect.left < myMap.width_pixel);
assert(displayRect.right > 0);
assert(displayRect.top < myMap.height_pixel);
assert(displayRect.bottom > 0);
// draw triangle field
// NOTE: WE DO THIS TWICE, AT FIRST ONLY TRIANGLE-TEXTURES, AT SECOND THE TEXTURE-BORDERS AND OBJECTS
for(int i = 0; i < 2; i++)
{
drawTextures = (i == 0);
for(int k = 0; k < 4; k++)
{
// beware calling DrawTriangle for each triangle
// IMPORTANT: integer values like +8 or -1 are for tolerance to beware of high triangles are not shown
// at first call DrawTriangle for all triangles inside the map edges
int row_start = std::max(displayRect.top, 2 * TRIANGLE_HEIGHT) / TRIANGLE_HEIGHT - 2;
int row_end = (displayRect.bottom) / TRIANGLE_HEIGHT + 8;
int col_start = std::max<int>(displayRect.left, TRIANGLE_WIDTH) / TRIANGLE_WIDTH - 1;
int col_end = (displayRect.right) / TRIANGLE_WIDTH + 1;
bool view_outside_edges;
if(k > 0)
{
// now call DrawTriangle for all triangles outside the map edges
view_outside_edges = false;
if(k == 1 || k == 3)
{
// at first call DrawTriangle for all triangles up or down outside
if(displayRect.top < 0)
{
row_start = std::max(0, height - 1 - (-displayRect.top / TRIANGLE_HEIGHT) - 1);
row_end = height - 1;
view_outside_edges = true;
} else if(displayRect.bottom > myMap.height_pixel)
{
row_start = 0;
row_end = (displayRect.bottom - myMap.height_pixel) / TRIANGLE_HEIGHT + 8;
view_outside_edges = true;
} else if(displayRect.top <= 2 * TRIANGLE_HEIGHT)
{
// this is for draw triangles that are reduced under the lower map edge (have bigger y-coords as
// myMap.height_pixel)
row_start = height - 3;
row_end = height - 1;
view_outside_edges = true;
} else if(displayRect.bottom >= (myMap.height_pixel - 8 * TRIANGLE_HEIGHT))
{
// this is for draw triangles that are raised over the upper map edge (have negative y-coords)
row_start = 0;
row_end = 8;
view_outside_edges = true;
}
}
if(k == 2 || k == 3)
{
// now call DrawTriangle for all triangles left or right outside
if(displayRect.left <= 0)
{
col_start = std::max(0, width - 1 - (-displayRect.left / TRIANGLE_WIDTH) - 1);
col_end = width - 1;
view_outside_edges = true;
} else if(displayRect.left < TRIANGLE_WIDTH)
{
col_start = width - 2;
col_end = width - 1;
view_outside_edges = true;
} else if(displayRect.right > myMap.width_pixel)
{
col_start = 0;
col_end = (displayRect.right - myMap.width_pixel) / TRIANGLE_WIDTH + 1;
view_outside_edges = true;
}
}
// if displayRect is not outside the map edges, there is nothing to do
if(!view_outside_edges)
continue;
}
assert(col_start >= 0);
assert(row_start >= 0);
assert(col_start <= col_end);
assert(row_start <= row_end);
for(unsigned y = row_start; y < height - 1u && y <= static_cast<unsigned>(row_end); y++)
{
if(y % 2 == 0)
{
// first RightSideUp
tempP2 = myMap.getVertex(width - 1, y + 1);
tempP2.x = 0;
DrawTriangle(display, displayRect, myMap, type, myMap.getVertex(0, y), tempP2, myMap.getVertex(0, y + 1));
for(unsigned x = std::max(col_start, 1); x < width && x <= static_cast<unsigned>(col_end); x++)
{
// RightSideUp
DrawTriangle(display, displayRect, myMap, type, myMap.getVertex(x, y), myMap.getVertex(x - 1, y + 1),
myMap.getVertex(x, y + 1));
// UpSideDown
DrawTriangle(display, displayRect, myMap, type, myMap.getVertex(x - 1, y + 1), myMap.getVertex(x - 1, y),
myMap.getVertex(x, y));
}
// last UpSideDown
tempP3 = myMap.getVertex(0, y);
tempP3.x = myMap.getVertex(width - 1, y).x + TRIANGLE_WIDTH;
DrawTriangle(display, displayRect, myMap, type, myMap.getVertex(width - 1, y + 1), myMap.getVertex(width - 1, y),
tempP3);
} else
{
for(unsigned x = col_start; x < width - 1u && x <= static_cast<unsigned>(col_end); x++)
{
// RightSideUp
DrawTriangle(display, displayRect, myMap, type, myMap.getVertex(x, y), myMap.getVertex(x, y + 1),
myMap.getVertex(x + 1, y + 1));
// UpSideDown
DrawTriangle(display, displayRect, myMap, type, myMap.getVertex(x + 1, y + 1), myMap.getVertex(x, y),
myMap.getVertex(x + 1, y));
}
// last RightSideUp
tempP3 = myMap.getVertex(0, y + 1);
tempP3.x = myMap.getVertex(width - 1, y + 1).x + TRIANGLE_WIDTH;
DrawTriangle(display, displayRect, myMap, type, myMap.getVertex(width - 1, y), myMap.getVertex(width - 1, y + 1),
tempP3);
// last UpSideDown
tempP1 = myMap.getVertex(0, y + 1);
tempP1.x = myMap.getVertex(width - 1, y + 1).x + TRIANGLE_WIDTH;
tempP3 = myMap.getVertex(0, y);
tempP3.x = myMap.getVertex(width - 1, y).x + TRIANGLE_WIDTH;
DrawTriangle(display, displayRect, myMap, type, tempP1, myMap.getVertex(width - 1, y), tempP3);
}
}
// draw last line
for(unsigned x = col_start; x < width - 1u && x <= static_cast<unsigned>(col_end); x++)
{
// RightSideUp
tempP2 = myMap.getVertex(x, 0);
tempP2.y = height * TRIANGLE_HEIGHT + myMap.getVertex(x, 0).y;
tempP3 = myMap.getVertex(x + 1, 0);
tempP3.y = height * TRIANGLE_HEIGHT + myMap.getVertex(x + 1, 0).y;
DrawTriangle(display, displayRect, myMap, type, myMap.getVertex(x, height - 1), tempP2, tempP3);
// UpSideDown
tempP1 = myMap.getVertex(x + 1, 0);
tempP1.y = height * TRIANGLE_HEIGHT + myMap.getVertex(x + 1, 0).y;
DrawTriangle(display, displayRect, myMap, type, tempP1, myMap.getVertex(x, height - 1), myMap.getVertex(x + 1, height - 1));
}
}
// last RightSideUp
tempP2 = myMap.getVertex(width - 1, 0);
tempP2.y += height * TRIANGLE_HEIGHT;
tempP3 = myMap.getVertex(0, 0);
tempP3.x = myMap.getVertex(width - 1, 0).x + TRIANGLE_WIDTH;
tempP3.y += height * TRIANGLE_HEIGHT;
DrawTriangle(display, displayRect, myMap, type, myMap.getVertex(width - 1, height - 1), tempP2, tempP3);
// last UpSideDown
tempP1 = myMap.getVertex(0, 0);
tempP1.x = myMap.getVertex(width - 1, 0).x + TRIANGLE_WIDTH;
tempP1.y += height * TRIANGLE_HEIGHT;
tempP3 = myMap.getVertex(0, height - 1);
tempP3.x = myMap.getVertex(width - 1, height - 1).x + TRIANGLE_WIDTH;
DrawTriangle(display, displayRect, myMap, type, tempP1, myMap.getVertex(width - 1, height - 1), tempP3);
}
}
namespace {
enum class BorderPreference
{
None,
LeftTop,
RightBottom
};
BorderPreference CalcBorders(const bobMAP& map, Uint8 s2Id1, Uint8 s2Id2, SDL_Rect& borderRect)
{
// we have to decide which border to blit, "left or right" or "top or bottom"
DescIdx<TerrainDesc> idxTop = map.s2IdToTerrain[s2Id1];
DescIdx<TerrainDesc> idxBottom = map.s2IdToTerrain[s2Id2];
if(idxTop == idxBottom)
return BorderPreference::None;
const TerrainDesc& t1 = global::worldDesc.get(idxTop);
const TerrainDesc& t2 = global::worldDesc.get(idxBottom);
if(t1.edgePriority > t2.edgePriority)
{
if(!t1.edgeType)
return BorderPreference::None;
borderRect = rect2SDL_Rect(global::worldDesc.get(t1.edgeType).posInTexture);
return BorderPreference::LeftTop;
} else if(t1.edgePriority < t2.edgePriority)
{
if(!t2.edgeType)
return BorderPreference::None;
borderRect = rect2SDL_Rect(global::worldDesc.get(t2.edgeType).posInTexture);
return BorderPreference::RightBottom;
}
return BorderPreference::None;
}
template<typename T>
constexpr bool isInRange(T val, T min, T max)
{
return val >= min && val <= max;
}
/// Return true if triangle is drawn
bool GetAdjustedPoints(const DisplayRectangle& displayRect, const bobMAP& myMap, Point32& p1, Point32& p2, Point32& p3)
{
if((!isInRange(p1.x, displayRect.left, displayRect.right) && !isInRange(p2.x, displayRect.left, displayRect.right)
&& !isInRange(p3.x, displayRect.left, displayRect.right))
|| (!isInRange(p1.y, displayRect.top, displayRect.bottom) && !isInRange(p2.y, displayRect.top, displayRect.bottom)
&& !isInRange(p3.y, displayRect.top, displayRect.bottom)))
{
bool triangle_shown = false;
if(displayRect.left <= 0)
{
int outside_left = displayRect.left;
int outside_right = 0;
if(isInRange(p1.x - myMap.width_pixel, outside_left, outside_right)
|| isInRange(p2.x - myMap.width_pixel, outside_left, outside_right)
|| isInRange(p3.x - myMap.width_pixel, outside_left, outside_right))
{
p1.x -= myMap.width_pixel;
p2.x -= myMap.width_pixel;
p3.x -= myMap.width_pixel;
triangle_shown = true;
}
} else if(displayRect.left < TRIANGLE_WIDTH)
{
int outside_left = displayRect.left;
int outside_right = displayRect.left + TRIANGLE_WIDTH;
if(isInRange(p1.x - myMap.width_pixel, outside_left, outside_right)
|| isInRange(p2.x - myMap.width_pixel, outside_left, outside_right)
|| isInRange(p3.x - myMap.width_pixel, outside_left, outside_right))
{
p1.x -= myMap.width_pixel;
p2.x -= myMap.width_pixel;
p3.x -= myMap.width_pixel;
triangle_shown = true;
}
} else if(displayRect.right > myMap.width_pixel)
{
int outside_left = myMap.width_pixel;
int outside_right = displayRect.right;
if(isInRange(p1.x + myMap.width_pixel, outside_left, outside_right)
|| isInRange(p2.x + myMap.width_pixel, outside_left, outside_right)
|| isInRange(p3.x + myMap.width_pixel, outside_left, outside_right))
{
p1.x += myMap.width_pixel;
p2.x += myMap.width_pixel;
p3.x += myMap.width_pixel;
triangle_shown = true;
}
}
if(displayRect.top < 0)
{
int outside_top = displayRect.top;
int outside_bottom = 0;
if(isInRange(p1.y - myMap.height_pixel, outside_top, outside_bottom)
|| isInRange(p2.y - myMap.height_pixel, outside_top, outside_bottom)
|| isInRange(p3.y - myMap.height_pixel, outside_top, outside_bottom))
{
p1.y -= myMap.height_pixel;
p2.y -= myMap.height_pixel;
p3.y -= myMap.height_pixel;
triangle_shown = true;
}
} else if(displayRect.bottom > myMap.height_pixel)
{
int outside_top = myMap.height_pixel;
int outside_bottom = displayRect.bottom;
if(isInRange(p1.y + myMap.height_pixel, outside_top, outside_bottom)
|| isInRange(p2.y + myMap.height_pixel, outside_top, outside_bottom)
|| isInRange(p3.y + myMap.height_pixel, outside_top, outside_bottom))
{
p1.y += myMap.height_pixel;
p2.y += myMap.height_pixel;
p3.y += myMap.height_pixel;
triangle_shown = true;
}
}
// now test if triangle has negative y-coords cause it's raised over the upper map edge
if(p1.y < 0 || p2.y < 0 || p3.y < 0)
{
if(isInRange(p1.y + myMap.height_pixel, displayRect.top, displayRect.bottom)
|| isInRange(p2.y + myMap.height_pixel, displayRect.top, displayRect.bottom)
|| isInRange(p3.y + myMap.height_pixel, displayRect.top, displayRect.bottom))
{
p1.y += myMap.height_pixel;
p2.y += myMap.height_pixel;
p3.y += myMap.height_pixel;
triangle_shown = true;
}
}
// now test if triangle has bigger y-coords as myMap.height_pixel cause it's reduced under the lower map edge
if(p1.y > myMap.height_pixel || p2.y > myMap.height_pixel || p3.y > myMap.height_pixel)
{
if(isInRange(p1.y - myMap.height_pixel, displayRect.top, displayRect.bottom)
|| isInRange(p2.y - myMap.height_pixel, displayRect.top, displayRect.bottom)
|| isInRange(p3.y - myMap.height_pixel, displayRect.top, displayRect.bottom))
{
p1.y -= myMap.height_pixel;
p2.y -= myMap.height_pixel;
p3.y -= myMap.height_pixel;
triangle_shown = true;
}
}
if(!triangle_shown)
return false;
}
p1 -= displayRect.getOrigin();
p2 -= displayRect.getOrigin();
p3 -= displayRect.getOrigin();
return true;
}
} // namespace
void CSurface::GetTerrainTextureCoords(MapType mapType, TriangleTerrainType texture, bool isRSU, int texture_move, Point16& upper,
Point16& left, Point16& right, Point16& upper2, Point16& left2, Point16& right2)
{
const auto animOffset = Point16(-texture_move, texture_move);
switch(texture)
{
// in case of USD-Triangle "upper.x" and "upper.y" means "lowerX" and "lowerY"
case TRIANGLE_TEXTURE_STEPPE_MEADOW1:
upper = Point16(17, 96);
left = Point16(0, 126);
right = Point16(35, 126);
break;
case TRIANGLE_TEXTURE_MINING1:
upper = Point16(17, 48);
left = Point16(0, 78);
right = Point16(35, 78);
break;
case TRIANGLE_TEXTURE_SNOW:
if(isRSU)
{
upper = Point16(17, 0);
left = Point16(0, 30);
right = Point16(35, 30);
} else
{
upper = Point16(17, 28);
left = Point16(0, 0);
right = Point16(37, 0);
}
if(mapType == MAP_WINTERLAND)
{
if(isRSU)
{
upper2 = Point16(231, 61) + animOffset;
left2 = Point16(207, 62) + animOffset;
right2 = Point16(223, 78) + animOffset;
} else
{
upper2 = Point16(224, 79) + animOffset;
left2 = Point16(232, 62) + animOffset;
right2 = Point16(245, 76) + animOffset;
}
}
break;
case TRIANGLE_TEXTURE_SWAMP:
upper = Point16(113, 0);
left = Point16(96, 30);
right = Point16(131, 30);
if(mapType == MAP_WINTERLAND)
{
if(isRSU)
{
upper2 = Point16(231, 61) + animOffset;
left2 = Point16(207, 62) + animOffset;
right2 = Point16(223, 78) + animOffset;
} else
{
upper2 = Point16(224, 79) + animOffset;
left2 = Point16(232, 62) + animOffset;
right2 = Point16(245, 76) + animOffset;
}
}
break;
case TRIANGLE_TEXTURE_STEPPE:
upper = Point16(65, 0);
left = Point16(48, 30);
right = Point16(83, 30);
break;
case TRIANGLE_TEXTURE_STEPPE_:
upper = Point16(65, 0);
left = Point16(48, 30);
right = Point16(83, 30);
break;
case TRIANGLE_TEXTURE_STEPPE__:
upper = Point16(65, 0);
left = Point16(48, 30);
right = Point16(83, 30);
break;
case TRIANGLE_TEXTURE_STEPPE___:
upper = Point16(65, 0);
left = Point16(48, 30);
right = Point16(83, 30);
break;
case TRIANGLE_TEXTURE_WATER:
if(isRSU)
{
upper = Point16(231, 61) + animOffset;
left = Point16(207, 62) + animOffset;
right = Point16(223, 78) + animOffset;
} else
{
upper = Point16(224, 79) + animOffset;
left = Point16(232, 62) + animOffset;
right = Point16(245, 76) + animOffset;
}
break;
case TRIANGLE_TEXTURE_WATER_:
if(isRSU)
{
upper = Point16(231, 61) + animOffset;
left = Point16(207, 62) + animOffset;
right = Point16(223, 78) + animOffset;
} else
{
upper = Point16(224, 79) + animOffset;
left = Point16(232, 62) + animOffset;
right = Point16(245, 76) + animOffset;
}
break;
case TRIANGLE_TEXTURE_WATER__:
if(isRSU)
{
upper = Point16(231, 61) + animOffset;
left = Point16(207, 62) + animOffset;
right = Point16(223, 78) + animOffset;
} else
{
upper = Point16(224, 79) + animOffset;
left = Point16(232, 62) + animOffset;
right = Point16(245, 76) + animOffset;
}
break;
case TRIANGLE_TEXTURE_MEADOW1:
upper = Point16(65, 96);
left = Point16(48, 126);
right = Point16(83, 126);
break;
case TRIANGLE_TEXTURE_MEADOW2:
upper = Point16(113, 96);
left = Point16(96, 126);
right = Point16(131, 126);
break;
case TRIANGLE_TEXTURE_MEADOW3:
upper = Point16(161, 96);
left = Point16(144, 126);
right = Point16(179, 126);
break;
case TRIANGLE_TEXTURE_MINING2:
upper = Point16(65, 48);
left = Point16(48, 78);
right = Point16(83, 78);
break;
case TRIANGLE_TEXTURE_MINING3:
upper = Point16(113, 48);
left = Point16(96, 78);
right = Point16(131, 78);
break;
case TRIANGLE_TEXTURE_MINING4:
upper = Point16(161, 48);
left = Point16(144, 78);
right = Point16(179, 78);
break;
case TRIANGLE_TEXTURE_STEPPE_MEADOW2:
upper = Point16(17, 144);
left = Point16(0, 174);
right = Point16(35, 174);
break;
case TRIANGLE_TEXTURE_FLOWER:
upper = Point16(161, 0);
left = Point16(144, 30);
right = Point16(179, 30);
break;
case TRIANGLE_TEXTURE_LAVA:
if(isRSU)
{
upper = Point16(231, 117) + animOffset;
left = Point16(207, 118) + animOffset;
right = Point16(223, 134) + animOffset;
} else
{
upper = Point16(224, 135) + animOffset;
left = Point16(232, 118) + animOffset;
right = Point16(245, 132) + animOffset;
}
break;
case TRIANGLE_TEXTURE_MINING_MEADOW:
upper = Point16(65, 144);
left = Point16(48, 174);
right = Point16(83, 174);
break;
default: // TRIANGLE_TEXTURE_FLOWER
upper = Point16(161, 0);
left = Point16(144, 30);
right = Point16(179, 30);
break;
}
}
void CSurface::DrawTriangle(SDL_Surface* display, const DisplayRectangle& displayRect, const bobMAP& myMap, MapType type, const MapNode& P1,
const MapNode& P2, const MapNode& P3)
{
Point32 p1(P1.x, P1.y);
Point32 p2(P2.x, P2.y);
Point32 p3(P3.x, P3.y);
// prevent drawing triangles that are not shown
if(!GetAdjustedPoints(displayRect, myMap, p1, p2, p3))
return;
// for moving water, lava, objects and so on
// This is very tricky: there are ice floes in the winterland and the water under this floes is moving.
// I don't know how this works in original settlers 2 but i solved it this way:
// i texture the triangle with normal water and then draw the floe over it. To Extract the floe
// from it's surrounded water, i use this color keys below. These are the color values for the water texture.
// I wrote a special SGE-Function that uses these color keys and ignores them in the Surf_Tileset.
static std::array<Uint32, 5> colorkeys = {14191, 14195, 13167, 13159, 11119};
static int texture_move = 0;
static int roundCount = 0;
static Uint32 roundTimeObjects = SDL_GetTicks();
static Uint32 roundTimeTextures = SDL_GetTicks();
if(SDL_GetTicks() - roundTimeObjects > 30)
{
roundTimeObjects = SDL_GetTicks();
if(roundCount >= 7)
roundCount = 0;
else
roundCount++;
}
if(SDL_GetTicks() - roundTimeTextures > 170)
{
roundTimeTextures = SDL_GetTicks();
texture_move++;
if(texture_move > 14)
texture_move = 0;
}
SDL_Surface* Surf_Tileset;
switch(type)
{
case MAP_GREENLAND:
Surf_Tileset =
global::bmpArray[global::s2->getMapObj()->getBitsPerPixel() == 8 ? TILESET_GREENLAND_8BPP : TILESET_GREENLAND_32BPP].surface;
break;
case MAP_WASTELAND:
Surf_Tileset =
global::bmpArray[global::s2->getMapObj()->getBitsPerPixel() == 8 ? TILESET_WASTELAND_8BPP : TILESET_WASTELAND_32BPP].surface;
break;
case MAP_WINTERLAND:
Surf_Tileset =
global::bmpArray[global::s2->getMapObj()->getBitsPerPixel() == 8 ? TILESET_WINTERLAND_8BPP : TILESET_WINTERLAND_32BPP]
.surface;
break;
default:
Surf_Tileset =
global::bmpArray[global::s2->getMapObj()->getBitsPerPixel() == 8 ? TILESET_GREENLAND_8BPP : TILESET_GREENLAND_32BPP].surface;
break;
}
bool const isRSU = p1.y < p2.y;
if(drawTextures)
{
// upper2, ..... are for special use in winterland.
Point16 upper, left, right, upper2, left2, right2;
auto const texture = TriangleTerrainType((isRSU ? P1.rsuTexture : P2.usdTexture) & ~0x40); // Mask out harbor bit
GetTerrainTextureCoords(type, texture, isRSU, texture_move, upper, left, right, upper2, left2, right2);
// draw the triangle
// do not shade water and lava
if(texture == TRIANGLE_TEXTURE_WATER || texture == TRIANGLE_TEXTURE_LAVA)
sge_TexturedTrigon(display, p1.x, p1.y, p2.x, p2.y, p3.x, p3.y, Surf_Tileset, upper.x, upper.y, left.x, left.y, right.x,
right.y);
else
{
// draw special winterland textures with moving water (ice floe textures)
if(type == MAP_WINTERLAND && (texture == TRIANGLE_TEXTURE_SNOW || texture == TRIANGLE_TEXTURE_SWAMP))
{
sge_TexturedTrigon(display, p1.x, p1.y, p2.x, p2.y, p3.x, p3.y, Surf_Tileset, upper2.x, upper2.y, left2.x, left2.y,
right2.x, right2.y);
if(global::s2->getMapObj()->getBitsPerPixel() == 8)
sge_PreCalcFadedTexturedTrigonColorKeys(display, p1.x, p1.y, p2.x, p2.y, p3.x, p3.y, Surf_Tileset, upper.x, upper.y,
left.x, left.y, right.x, right.y, P1.shading << 8, P2.shading << 8,
P3.shading << 8, gouData[type], colorkeys.data(), colorkeys.size());
else
sge_FadedTexturedTrigonColorKeys(display, p1.x, p1.y, p2.x, p2.y, p3.x, p3.y, Surf_Tileset, upper.x, upper.y, left.x,
left.y, right.x, right.y, P1.i, P2.i, P3.i, colorkeys.data(), colorkeys.size());
} else
{
if(global::s2->getMapObj()->getBitsPerPixel() == 8)
sge_PreCalcFadedTexturedTrigon(display, p1.x, p1.y, p2.x, p2.y, p3.x, p3.y, Surf_Tileset, upper.x, upper.y, left.x,
left.y, right.x, right.y, P1.shading << 8, P2.shading << 8, P3.shading << 8,
gouData[type]);
else
sge_FadedTexturedTrigon(display, p1.x, p1.y, p2.x, p2.y, p3.x, p3.y, Surf_Tileset, upper.x, upper.y, left.x, left.y,
right.x, right.y, P1.i, P2.i, P3.i);
}
}
return;
}
// blit borders
/// PRIORITY FROM HIGH TO LOW: SNOW, MINING_MEADOW, STEPPE, STEPPE_MEADOW2, MINING, MEADOW, FLOWER, STEPPE_MEADOW1, SWAMP, WATER, LAVA
if(global::s2->getMapObj()->getRenderBorders())
{
// RSU-Triangle
if(isRSU)
{
// left upper / right lower edge - therefore get the usd-texture from left to compare
Uint16 col = (P1.VertexX - 1 < 0 ? myMap.width - 1 : P1.VertexX - 1);
MapNode tempP = myMap.getVertex(col, P1.VertexY);
SDL_Rect BorderRect;
auto borderSide = CalcBorders(myMap, tempP.usdTexture, P1.rsuTexture, BorderRect);
if(borderSide != BorderPreference::None)
{
Point16 tmpP1{p1}, tmpP2{p2};
Point32 thirdPt;
if(borderSide == BorderPreference::LeftTop)
thirdPt = p3;
else
{
tmpP1 += Point16(1, 0);
tmpP2 += Point16(1, 0);
thirdPt = Point32(tempP.x, tempP.y) - displayRect.getOrigin();
// Shift it close to p1
auto diff = thirdPt - p1;
if(diff.x < -myMap.width_pixel / 2)
thirdPt.x += myMap.width_pixel;
else if(diff.x > myMap.width_pixel / 2)
thirdPt.x -= myMap.width_pixel;
if(diff.y < -myMap.height_pixel / 2)
thirdPt.y += myMap.height_pixel;
else if(diff.y > myMap.height_pixel / 2)
thirdPt.y -= myMap.height_pixel;
}
Point16 tipPt{(p1 + p2 + thirdPt) / 3};
if(global::s2->getMapObj()->getBitsPerPixel() == 8)
DrawPreCalcFadedTexturedTrigon(display, tmpP1, tmpP2, tipPt, Surf_Tileset, BorderRect, P1.shading << 8, P2.shading << 8,
gouData[type]);
else
DrawFadedTexturedTrigon(display, tmpP1, tmpP2, tipPt, Surf_Tileset, BorderRect, P1.i, P2.i);
}
}
// USD-Triangle
else
{
SDL_Rect BorderRect;
// left lower / right upper
auto borderSide = CalcBorders(myMap, P2.rsuTexture, P2.usdTexture, BorderRect);
if(borderSide != BorderPreference::None)
{
Uint16 col = (P1.VertexX - 1 < 0 ? myMap.width - 1 : P1.VertexX - 1);
MapNode tempP = myMap.getVertex(col, P1.VertexY);
Point16 tmpP1{p1}, tmpP2{p2};
Point32 thirdPt;
if(borderSide == BorderPreference::LeftTop)
{
thirdPt = p3;
tmpP1 -= Point16(1, 0);
tmpP2 -= Point16(1, 0);
} else
{
thirdPt = Point32(tempP.x, tempP.y) - displayRect.getOrigin();
// Shift it close to p1
auto diff = thirdPt - p1;
if(diff.x < -myMap.width_pixel / 2)
thirdPt.x += myMap.width_pixel;
else if(diff.x > myMap.width_pixel / 2)
thirdPt.x -= myMap.width_pixel;
if(diff.y < -myMap.height_pixel / 2)
thirdPt.y += myMap.height_pixel;
else if(diff.y > myMap.height_pixel / 2)
thirdPt.y -= myMap.height_pixel;
}
Point16 tipPt{(p1 + p2 + thirdPt) / 3};
if(global::s2->getMapObj()->getBitsPerPixel() == 8)
DrawPreCalcFadedTexturedTrigon(display, tmpP1, tmpP2, tipPt, Surf_Tileset, BorderRect, P1.shading << 8, P2.shading << 8,
gouData[type]);
else
DrawFadedTexturedTrigon(display, tmpP1, tmpP2, tipPt, Surf_Tileset, BorderRect, P1.i, P2.i);
}
// top / bottom - therefore get the rsu-texture one line above to compare
Uint16 row = (P2.VertexY - 1 < 0 ? myMap.height - 1 : P2.VertexY - 1);
Uint16 col = (P2.VertexY % 2 == 0 ? P2.VertexX : (P2.VertexX + 1 > myMap.width - 1 ? 0 : P2.VertexX + 1));
MapNode tempP = myMap.getVertex(col, row);
borderSide = CalcBorders(myMap, tempP.rsuTexture, P2.usdTexture, BorderRect);
if(borderSide != BorderPreference::None)
{
Point32 thirdPt;
if(borderSide == BorderPreference::LeftTop)
thirdPt = p1;
else
{
thirdPt = Point32(tempP.x, tempP.y) - displayRect.getOrigin();
// Shift it close to p2
auto diff = thirdPt - p2;
if(diff.x < -myMap.width_pixel / 2)
thirdPt.x += myMap.width_pixel;
else if(diff.x > myMap.width_pixel / 2)
thirdPt.x -= myMap.width_pixel;
if(diff.y < -myMap.height_pixel / 2)
thirdPt.y += myMap.height_pixel;
else if(diff.y > myMap.height_pixel / 2)
thirdPt.y -= myMap.height_pixel;
}
Point16 tipPt{(p2 + p3 + thirdPt) / 3};
if(global::s2->getMapObj()->getBitsPerPixel() == 8)
DrawPreCalcFadedTexturedTrigon(display, Point16(p2), Point16(p3), tipPt, Surf_Tileset, BorderRect, P2.shading << 8,
P3.shading << 8, gouData[type]);
else
DrawFadedTexturedTrigon(display, Point16(p2), Point16(p3), tipPt, Surf_Tileset, BorderRect, P2.i, P3.i);
}
}
}
// blit picture to vertex (trees, animals, buildings and so on) --> BUT ONLY AT node1 ON RIGHTSIDEUP-TRIANGLES
// blit objects
if(!isRSU)
{
int objIdx = 0;
switch(P2.objectInfo)
{
// tree
case 0xC4:
if(P2.objectType >= 0x30 && P2.objectType <= 0x37)
{
if(P2.objectType + roundCount > 0x37)
objIdx = MAPPIC_TREE_PINE + (P2.objectType - 0x30) + (roundCount - 7);
else
objIdx = MAPPIC_TREE_PINE + (P2.objectType - 0x30) + roundCount;
} else if(P2.objectType >= 0x70 && P2.objectType <= 0x77)
{
if(P2.objectType + roundCount > 0x77)
objIdx = MAPPIC_TREE_BIRCH + (P2.objectType - 0x70) + (roundCount - 7);
else
objIdx = MAPPIC_TREE_BIRCH + (P2.objectType - 0x70) + roundCount;
} else if(P2.objectType >= 0xB0 && P2.objectType <= 0xB7)
{
if(P2.objectType + roundCount > 0xB7)
objIdx = MAPPIC_TREE_OAK + (P2.objectType - 0xB0) + (roundCount - 7);
else
objIdx = MAPPIC_TREE_OAK + (P2.objectType - 0xB0) + roundCount;
} else if(P2.objectType >= 0xF0 && P2.objectType <= 0xF7)
{
if(P2.objectType + roundCount > 0xF7)
objIdx = MAPPIC_TREE_PALM1 + (P2.objectType - 0xF0) + (roundCount - 7);
else
objIdx = MAPPIC_TREE_PALM1 + (P2.objectType - 0xF0) + roundCount;
}
break;
// tree
case 0xC5:
if(P2.objectType >= 0x30 && P2.objectType <= 0x37)
{
if(P2.objectType + roundCount > 0x37)
objIdx = MAPPIC_TREE_PALM2 + (P2.objectType - 0x30) + (roundCount - 7);
else
objIdx = MAPPIC_TREE_PALM2 + (P2.objectType - 0x30) + roundCount;
} else if(P2.objectType >= 0x70 && P2.objectType <= 0x77)
{
if(P2.objectType + roundCount > 0x77)
objIdx = MAPPIC_TREE_PINEAPPLE + (P2.objectType - 0x70) + (roundCount - 7);
else
objIdx = MAPPIC_TREE_PINEAPPLE + (P2.objectType - 0x70) + roundCount;
} else if(P2.objectType >= 0xB0 && P2.objectType <= 0xB7)
{
if(P2.objectType + roundCount > 0xB7)
objIdx = MAPPIC_TREE_CYPRESS + (P2.objectType - 0xB0) + (roundCount - 7);
else
objIdx = MAPPIC_TREE_CYPRESS + (P2.objectType - 0xB0) + roundCount;
} else if(P2.objectType >= 0xF0 && P2.objectType <= 0xF7)
{
if(P2.objectType + roundCount > 0xF7)
objIdx = MAPPIC_TREE_CHERRY + (P2.objectType - 0xF0) + (roundCount - 7);
else