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walking and turning effect

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Ondřej Novák 2025-01-29 14:22:27 +01:00
parent 3b903e2b52
commit 4f9f985918
12 changed files with 286 additions and 98 deletions
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84
platform/sdl/BGraph2.cpp
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@ -90,22 +90,96 @@ void DXCopyRects64(unsigned short x,unsigned short y,unsigned short xs,unsigned
}
void *DxPrepareWalk(int ypos) {
return 0;
auto &sdl = get_sdl_global_context();
sdl.swap_render_buffers();
sdl.present_rect(screen_buffer.get(), screen_pitch, 0,0,640,480);//new is in hidden buffer
return NULL;
}
void DxZoomWalk(void *handle, int ypos, int *points,float phase, void *lodka) {
auto &sdl = get_sdl_global_context();
if (phase>1.0) phase=1.0f;
if (phase<-1.0) phase=-1.0f;
SDL_Rect rc1;
rc1.x=0;
rc1.y=0+ypos;
rc1.w=640;
rc1.h=360;
SDL_Rect rc2;
rc2.x=points[0];
rc2.y=points[1]+ypos;
rc2.w=points[2]-rc2.x;
rc2.h=points[3]-rc2.y;
sdl.show_blend_transition({0,ypos,640,360},rc1, rc2, phase);
}
void DxDoneWalk(void *handle) {
auto &sdl = get_sdl_global_context();
sdl.swap_display_buffers(); //present hidden buffer
}
void *DxPrepareTurn(int ypos) {
return 0;
auto &sdl = get_sdl_global_context();
sdl.swap_render_buffers();
sdl.present_rect(screen_buffer.get(), screen_pitch, 0,0,640,480);//new is in hidden buffer
return NULL;
}
void DxTurn(void *handle, char right, int ypos,int border, float phase, void *lodka) {
void DxTurn(void *handle, int ypos,int border, float phase, void *lodka) {
auto &sdl = get_sdl_global_context();
if (phase>1.0) phase=1.0f;
if (phase<-1.0) phase=-1.0f;
int width = 640-2*border;
SDL_Rect visible_from{0,ypos,640,360};
SDL_Rect visible_where;
SDL_Rect hidden_from{0,ypos,640,360};
SDL_Rect hidden_where;
if (phase > 0) {
hidden_from.x = border;
} else if (phase < 0) {
visible_from.x = border;
} else {
return ;
}
visible_from.w-= border;
hidden_from.w -= border;
visible_where = visible_from;
hidden_where = hidden_from;
int xsep = border + static_cast<int>(std::round(width * std::abs(phase)));
if (phase > 0) {
xsep = 640-xsep;
hidden_where.x = xsep;
visible_where.x = xsep - visible_where.w;
} else {
hidden_where.x = xsep - visible_where.w;
visible_where.x = xsep;
}
auto crop_rects = [](SDL_Rect &primary, SDL_Rect &secondary) {
if (primary.x < 0) {
secondary.x -= primary.x*2/3;
secondary.w += primary.x*2/3;
primary.w += primary.x;
primary.x = 0;
}
int extra = 640 - (primary.x + primary.w);;
if (extra < 0) {
primary.w += extra;
secondary.w += extra*2/3;
}
};
crop_rects(visible_where, visible_from);
crop_rects(hidden_where, hidden_from);
int adjw = static_cast<int>(hidden_from.w / (1.0+2.0*std::abs(phase)));
if (phase < 0) {
hidden_from.x += adjw;
}
hidden_from.w -= adjw;
sdl.show_slide_transition(visible_from, visible_where, hidden_from, hidden_where);
}
void DxDoneTurn(void *handle) {
auto &sdl = get_sdl_global_context();
sdl.swap_display_buffers(); //present hidden buffer
}
void DxTurnLeftRight(char right, float phase, int border, int ypos, int *last) {