source/code/HelpHowtoState.cpp
browsing at commit = 1de972a70f4009300c12fc6d9ddb56bb62bab02c
/*
===========================================================================
blockattack - Block Attack - Rise of the Blocks
Copyright (C) 2005-2018 Poul Sander
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see http://www.gnu.org/licenses/
Source information and contacts persons can be found at
https://blockattack.net
===========================================================================
*/
#include "HelpHowtoState.hpp"
#include "global.hpp"
#include "common.h"
#include "MenuSystem.h"
#include <cmath>
/**
* Draws bricks with a string like:
* "aab" for two identical one and another
* "aaB" the third one will have a bomb
* The any char not in 'a' to 'g' or 'A' to 'G' the behavior is undefined.
* @param target Target to draw to
* @param bricks description on what to draw as a string
* @param x
* @param y
*/
static void RenderRowOfBricks(SDL_Renderer* target, const std::string& brickStr, int x, int y) {
Uint32 tick = SDL_GetTicks();
for (size_t i = 0; i < brickStr.size(); ++i) {
bool bomb = false;
char brickChar = brickStr[i];
if (brickChar >= 'A' && brickChar <= 'G') {
bomb = true;
brickChar = brickChar + 'a' - 'A';
}
if (brickChar >= 'a' && brickChar <= 'g') {
globalData.bricks[brickChar - 'a'].Draw(target, tick, x+i*50, y, &globalData.logicalResize);
if (bomb) {
globalData.spriteHolder->GetSprite("block_bomb").Draw(target, tick, x+i*50, y, &globalData.logicalResize);
}
}
}
}
class HorizontalSwitchAnimation {
public:
std::string brickStr = "abc";
int cursorPos = 0;
int state = 0; //0=move left, 1 = switch, 2 = move right, 3 = switch
Uint32 lastTick = 0;
Uint32 animationSpeed = 2000;
void Update (Uint32 tick) {
if (tick > lastTick + animationSpeed) {
lastTick = tick;
switch (state) {
case 0:
cursorPos = 1;
break;
case 1: //fallthough
case 3:
std::swap(brickStr[cursorPos], brickStr[cursorPos + 1]);
break;
case 2:
cursorPos = 0;
break;
}
++state;
if (state > 3) {
state = 0;
}
}
}
};
class MultiLineBlocks {
private:
std::vector<std::string> lines;
public:
MultiLineBlocks& addLine(const std::string& line) {
lines.push_back(line);
return *this;
}
void Render(SDL_Renderer* target, int x, int y) {
for (size_t i = 0; i < lines.size(); ++i) {
RenderRowOfBricks(target, lines[i], x, y+i*50);
}
}
};
HorizontalSwitchAnimation switchAnimation;
sago::SagoTextField switchAnimationField;
sago::SagoTextField clearRowfield;
sago::SagoTextField comboField;
sago::SagoTextField dropField;
sago::SagoTextField chainField;
static void InitTextField(sago::SagoTextField& field, const char* text) {
field.SetHolder(&globalData.spriteHolder->GetDataHolder());
field.SetFontSize(30);
field.SetOutline(2, {0,0,0,255});
field.SetText(text);
}
HelpHowtoState::HelpHowtoState() {
InitTextField(switchAnimationField, _("Switch block horizontally"));
InitTextField(clearRowfield, _("Match 3 to clear"));
InitTextField(comboField, _("Create combos!"));
InitTextField(dropField, _("Drop blocks!"));
InitTextField(chainField, _("Create a chain effect"));
}
HelpHowtoState::~HelpHowtoState() {
}
const double PI =3.141592653589793238463;
static void RenderDrawLine(SDL_Renderer* renderer, int x1, int y1, int x2, int y2) {
globalData.logicalResize.LogicalToPhysical(&x1, &y1);
globalData.logicalResize.LogicalToPhysical(&x2, &y2);
SDL_RenderDrawLine(renderer, x1, y1, x2, y2);
}
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 * std::cos(angle) - dy * std::sin(angle) + x2;
double ny1 = dx * std::sin(angle) + dy * std::cos(angle) + y2;
RenderDrawLine(target, x1, y1, x2, y2);
RenderDrawLine(target, nx1, ny1, x2, y2);
nx1 = dx * std::cos(-angle) - dy * std::sin(-angle) + x2;
ny1 = dx * std::sin(-angle) + dy * std::cos(-angle) + y2;
RenderDrawLine(target, nx1, ny1, x2, y2);
}
void HelpHowtoState::Draw(SDL_Renderer* target) {
DrawBackground(target);
SDL_SetRenderDrawColor(target, 0, 0, 0, SDL_ALPHA_OPAQUE);
RenderRowOfBricks(target, switchAnimation.brickStr, 50, 50);
globalData.spriteHolder->GetSprite("cursor").Draw(target, SDL_GetTicks(), 50+switchAnimation.cursorPos*50, 50, &globalData.logicalResize);
switchAnimationField.Draw(target, 50 +150+30, 50+25, sago::SagoTextField::Alignment::left, sago::SagoTextField::VerticalAlignment::center, &globalData.logicalResize);
RenderRowOfBricks(target, "adaa", 50, 150);
globalData.spriteHolder->GetSprite("cursor").Draw(target, SDL_GetTicks(), 50, 150, &globalData.logicalResize);
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, &globalData.logicalResize);
comboField.Draw(target, 50+175, 410, sago::SagoTextField::Alignment::center, sago::SagoTextField::VerticalAlignment::top, &globalData.logicalResize);
MultiLineBlocks().addLine("ab").addLine("ba").addLine("ab").Render(target, 50, 250);
globalData.spriteHolder->GetSprite("cursor").Draw(target, SDL_GetTicks(), 50, 250+50, &globalData.logicalResize);
MultiLineBlocks().addLine("AB").addLine("AB").addLine("AB").Render(target, 50+200, 250);
DrawArrow(target, 175, 325, 225, 325);
MultiLineBlocks().addLine("a").addLine("b").addLine("e").Render(target, 50+400, 250);
globalData.spriteHolder->GetSprite("cursor").Draw(target, SDL_GetTicks(), 50+400, 250, &globalData.logicalResize);
MultiLineBlocks().addLine(" ").addLine("b").addLine("ea").Render(target, 50+400+200, 250);
dropField.Draw(target, 50+400+150, 410, sago::SagoTextField::Alignment::center, sago::SagoTextField::VerticalAlignment::top, &globalData.logicalResize);
DrawArrow(target, 575, 325, 625, 325);
DrawArrow(target, 475, 275, 525, 275);
DrawArrow(target, 525, 275, 525, 375);
DrawArrow(target, 675, 275, 725, 275);
DrawArrow(target, 725, 275, 725, 375);
MultiLineBlocks().addLine(" d").addLine(" f").addLine(" f").addLine("fdd").Render(target, 50, 500);
MultiLineBlocks().addLine(" d").addLine(" F").addLine(" F").addLine("dFd").Render(target, 50+200, 500);
MultiLineBlocks().addLine(" d").addLine(" ").addLine(" ").addLine("d d").Render(target, 50+200*2, 500);
MultiLineBlocks().addLine(" ").addLine(" ").addLine(" ").addLine("DDD").Render(target, 50+200*3, 500);
globalData.spriteHolder->GetSprite("cursor").Draw(target, SDL_GetTicks(), 50, 650, &globalData.logicalResize);
DrawArrow(target, 200, 600, 250, 600);
DrawArrow(target, 400, 600, 450, 600);
DrawArrow(target, 600, 600, 650, 600);
DrawArrow(target, 525, 525, 525, 675);
chainField.Draw(target, 400, 710, sago::SagoTextField::Alignment::center, sago::SagoTextField::VerticalAlignment::top, &globalData.logicalResize);
HelpCommonState::Draw(target);
}
void HelpHowtoState::Update() {
switchAnimation.Update(SDL_GetTicks());
HelpCommonState::Update();
}