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#include <SDL.h>
#include "colour.h"
#include "plot.h"
static SDL_Window *window = NULL;
static SDL_Renderer *renderer = NULL;
void
plot_update(void)
{
SDL_RenderPresent(renderer);
}
void
plot_rect(unsigned int x, unsigned int y, unsigned int width, unsigned int height, struct colour *c)
{
SDL_Rect rect;
SDL_SetRenderDrawColor(renderer, c->r, c->g, c->b, 255);
rect.x = x;
rect.y = y;
rect.w = width;
rect.h = height;
SDL_RenderFillRect(renderer, &rect);
}
void
plot_cell(unsigned int x, unsigned int y, struct colour *c)
{
plot_rect(
x*CELL_SIZE+(x-1)*BORDER_THICKNESS,
y*CELL_SIZE+(y-1)*BORDER_THICKNESS,
CELL_SIZE,
CELL_SIZE,
c
);
}
void
plot_clear(void)
{
/* blank out the background with black */
SDL_SetRenderDrawColor(renderer, 0x00, 0x00, 0x00, 0xFF);
SDL_RenderFillRect(renderer, NULL);
}
int
plot_init(void)
{
if (SDL_Init(SDL_INIT_VIDEO) < 0) {
fprintf(stderr, "Failed to init SDL video: %s\n", SDL_GetError());
return 1;
}
window = SDL_CreateWindow(
"Tetris Clone",
SDL_WINDOWPOS_UNDEFINED,
SDL_WINDOWPOS_UNDEFINED,
WIDTH_PIXELS,
HEIGHT_PIXELS,
SDL_WINDOW_SHOWN
);
if (window == NULL) {
fprintf(stderr, "Failed to create window: %s\n", SDL_GetError());
return 1;
}
renderer = SDL_CreateRenderer(window, 0, 0);
if (renderer == NULL) {
fprintf(stderr, "Failed to get window renderer: %s\n", SDL_GetError());
return 1;
}
plot_clear();
return 0;
}
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