#include "TileMapComponent.h"

#include "Actor.h"

TileMapComponent::TileMapComponent(Actor * owner, const TileMapTexture& tilemapTexture, int drawOrder)

: SpriteComponent(owner, drawOrder), tilemapTexture(tilemapTexture) {

}

void TileMapComponent::Draw(SDL_Renderer * renderer) {

int tw = GetTexWidth();

int th = GetTexHeight();

int cw = tw / tilemapTexture.GetColumnCount();

int ch = th / tilemapTexture.GetRowCount();

int x = 0;

int y = 0;

for (int i = 0; i < tilemapTexture.GetLayerCount(); i++) {

const CSV<int>& csv = tilemapTexture.GetLayer(i);

x = 0;

y = 0;

for (int j = 0; j < csv.Count(); j++) {

const CSVRow<int> row = csv.GetRowAt(j);

for (int k = 0; k < row.Count(); k++) {

int index = row.GetElementAt(k);

drawCell(renderer, index, x, y, cw, ch);

x += cw;

}

y += ch;

x = 0;

}

}

}

void TileMapComponent::SetTileMapTexture(const TileMapTexture & tilemapTexture) {

this->tilemapTexture = tilemapTexture;

}

void TileMapComponent::drawCell(SDL_Renderer* renderer, int index, int x, int y, int cw, int ch) {

if (index == -1) {

return;

}

SDL_Rect r;

r.x = x;

r.y = y;

r.w = cw;

r.h = ch;

SDL_Rect srcrect;

srcrect.w = cw;

srcrect.h = ch;

srcrect.x = (index % tilemapTexture.GetColumnCount()) * cw;

srcrect.y = (index / tilemapTexture.GetColumnCount()) * ch;

// Draw (have to convert angle from radians to degrees, and clockwise to counter)

SDL_RenderCopyEx(renderer,

mTexture,

&srcrect,

&r,

-Math::ToDegrees(mOwner->GetRotation()),

nullptr,

SDL_FLIP_NONE);

}