commit 702c3f63
Create arrow for the how to screen
Changed files
| M | source/code/HelpHowtoState.cpp before |
diff --git a/source/code/HelpHowtoState.cpp b/source/code/HelpHowtoState.cpp
index ecfa113..e1ce319 100644
--- a/source/code/HelpHowtoState.cpp
+++ b/source/code/HelpHowtoState.cpp
@@ -25,6 +25,7 @@ https://blockattack.net
#include "global.hpp"
#include "common.h"
#include "MenuSystem.h"
+#include <cmath>
const int xsize = 1024;
const int ysize = 768;
@@ -147,6 +148,24 @@ void HelpHowtoState::ProcessInput(const SDL_Event& event, bool& processed) {
}
}
+const double PI =3.141592653589793238463;
+
+static void DrawArrow(SDL_Renderer* target, int x1, int y1, int x2, int y2) {
+ double dx = x1-x2;
+ double dy = y1-y2;
+ double distance = std::sqrt((dx*dx)+(dy*dy));
+ dx = dx * 10.0 / distance;
+ dy = dy * 10.0 / distance;
+ double angle= PI/4.0;
+ double nx1 = dx * cos(angle) - dy * sin(angle) + x2;
+ double ny1 = dx * sin(angle) + dy * cos(angle) + y2;
+ SDL_RenderDrawLine(target, x1, y1, x2, y2);
+ SDL_RenderDrawLine(target, nx1, ny1, x2, y2);
+ nx1 = dx * cos(-angle) - dy * sin(-angle) + x2;
+ ny1 = dx * sin(-angle) + dy * cos(-angle) + y2;
+ SDL_RenderDrawLine(target, nx1, ny1, x2, y2);
+}
+
void HelpHowtoState::Draw(SDL_Renderer* target) {
DrawBackground(target);
RenderRowOfBricks(target, switchAnimation.brickStr, 50, 50);
@@ -155,6 +174,7 @@ void HelpHowtoState::Draw(SDL_Renderer* target) {
RenderRowOfBricks(target, "adaa", 50, 150);
globalData.spriteHolder->GetSprite("cursor").Draw(target, SDL_GetTicks(), 50, 150);
RenderRowOfBricks(target, "dAAA", 50+300, 150);
+ DrawArrow(target, 50+200+25, 150+25, 50+300-25, 150+25);
clearRowfield.Draw(target, 600, 150+25, sago::SagoTextField::Alignment::left, sago::SagoTextField::VerticalAlignment::center);
comboField.Draw(target, 50+175, 410, sago::SagoTextField::Alignment::center);
MultiLineBlocks().addLine("ab").addLine("ba").addLine("ab").Render(target, 50, 250);