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authorPaul Duncan <pabs@pablotron.org>2019-01-14 12:44:32 -0500
committerPaul Duncan <pabs@pablotron.org>2019-01-14 12:44:32 -0500
commit280b84ed9122d6b96555498d8672b5de98286c46 (patch)
tree684700fcf0fe93adb74a5dd6040c459d46cc40ad /src/sdl
parent969c64da6a63e6c0efa1b79a317ef953cb3aaaa9 (diff)
downloadsok-280b84ed9122d6b96555498d8672b5de98286c46.tar.bz2
sok-280b84ed9122d6b96555498d8672b5de98286c46.zip
add bg-style.[hc]
Diffstat (limited to 'src/sdl')
-rw-r--r--src/sdl/bg-style.c21
-rw-r--r--src/sdl/bg-style.h21
-rw-r--r--src/sdl/draw.c79
3 files changed, 94 insertions, 27 deletions
diff --git a/src/sdl/bg-style.c b/src/sdl/bg-style.c
new file mode 100644
index 0000000..02bc759
--- /dev/null
+++ b/src/sdl/bg-style.c
@@ -0,0 +1,21 @@
+#include <math.h> // sin()
+#include "bg-style.h"
+
+#define M_2_PI (2.0 * 3.1415926)
+
+#define BG_STYLE_GET_CHANNEL(c, time) ((c).base + (((c).period) ? ( \
+ (c).amplitude * sin(((c).phase + (time)) * M_2_PI / (1.0 * (c).period)) \
+) : 0))
+
+SDL_Color
+bg_style_get_color(
+ const bg_style_t * const style,
+ const Uint32 ticks
+) {
+ return (SDL_Color) {
+ .r = BG_STYLE_GET_CHANNEL(style->r, ticks),
+ .g = BG_STYLE_GET_CHANNEL(style->g, ticks),
+ .b = BG_STYLE_GET_CHANNEL(style->b, ticks),
+ .a = BG_STYLE_GET_CHANNEL(style->a, ticks),
+ };
+}
diff --git a/src/sdl/bg-style.h b/src/sdl/bg-style.h
new file mode 100644
index 0000000..c4ca9a5
--- /dev/null
+++ b/src/sdl/bg-style.h
@@ -0,0 +1,21 @@
+#ifndef BG_STYLE_H
+#define BG_STYLE_H
+
+#include <SDL.h> // SDL_Color
+
+typedef struct {
+ struct {
+ int base,
+ amplitude,
+ phase,
+ period;
+ } r, g, b, a;
+} bg_style_t;
+
+SDL_Color
+bg_style_get_color(
+ const bg_style_t * const,
+ const Uint32
+);
+
+#endif /* BG_STYLE_H */
diff --git a/src/sdl/draw.c b/src/sdl/draw.c
index 418ddd2..482bfb2 100644
--- a/src/sdl/draw.c
+++ b/src/sdl/draw.c
@@ -5,6 +5,7 @@
#include "draw.h"
#include "sprites.h"
#include "draw-text.h"
+#include "bg-style.h"
#define M_2_PI (2.0 * 3.1415926)
@@ -255,7 +256,6 @@ HELP_STYLE = {
},
};
-#define DELIM " "
static void
draw_help_text(
@@ -263,55 +263,80 @@ draw_help_text(
) {
// build text
char buf[256];
+#define D " "
snprintf(
buf, sizeof(buf),
- " %sU: Undo" DELIM "R: Reset" DELIM "S: Solve" DELIM "Q: Quit ",
- sok_ctx_is_done(draw_ctx->ctx) ? "Space: Next Level" DELIM : ""
+ " %sU: Undo" D "R: Reset" D "S: Solve" D "Q: Quit ",
+ sok_ctx_is_done(draw_ctx->ctx) ? "Space: Next Level" D : ""
);
+#undef D
// draw text
draw_text(draw_ctx->renderer, draw_ctx->font, &HELP_STYLE, buf);
}
+static const bg_style_t
+BG_STYLES[] = {{
+ // normal style
+ .r = { .base = 0x00 },
+ .g = { .base = 0x00 },
+ .b = { .base = 0x00 },
+ .a = { .base = 0xFF },
+}, {
+ // won style
+ .r = {
+ .base = 0x66,
+ .amplitude = 0x33,
+ .phase = 1000,
+ .period = 2000,
+ },
+
+ .g = {
+ .base = 0x66,
+ .amplitude = 0x33,
+ .phase = 3000,
+ .period = 5000,
+ },
+
+ .b = {
+ .base = 0x66,
+ .amplitude = 0x33,
+ .phase = 5000,
+ .period = 7000,
+ },
+
+ .a = {
+ .base = 0xFF,
+ },
+}};
+
static void
-set_bg_won_color(
+draw_bg(
draw_ctx_t * const draw_ctx
) {
- const Uint32 ticks = SDL_GetTicks();
-
- // gen color
- const SDL_Color c = {
- .r = 0x66 + 0x33 * sinf((1000 + ticks) * M_2_PI / 2000.0),
- .g = 0x66 + 0x33 * sinf((3000 + ticks) * M_2_PI / 5000.0),
- .b = 0x66 + 0x33 * sinf((5000 + ticks) * M_2_PI / 7000.0),
- .a = 0xFF,
- };
+ // get color
+ const SDL_Color c = bg_style_get_color(
+ BG_STYLES + (sok_ctx_is_done(draw_ctx->ctx) ? 1 : 0),
+ SDL_GetTicks()
+ );
// set color
if (SDL_SetRenderDrawColor(draw_ctx->renderer, c.r, c.g, c.b, c.a)) {
die("SDL_SetRenderDrawColor(): %s", SDL_GetError());
}
+
+ // clear background
+ SDL_RenderClear(draw_ctx->renderer);
}
void
draw(
draw_ctx_t * const draw_ctx
) {
- const bool is_done = sok_ctx_is_done(draw_ctx->ctx);
-
- // set bg color
- if (sok_ctx_is_done(draw_ctx->ctx)) {
- // set bg won color
- set_bg_won_color(draw_ctx);
- } else {
- // set normal bg color
- set_color(draw_ctx->renderer, is_done ? COLOR_BG_WON : COLOR_BG);
- }
-
// clear background
- SDL_RenderClear(draw_ctx->renderer);
+ draw_bg(draw_ctx);
- // render
+ // render level
sok_ctx_walk(draw_ctx->ctx, &DRAW_CBS, draw_ctx);
// render text
@@ -319,6 +344,6 @@ draw(
draw_moves_text(draw_ctx);
draw_help_text(draw_ctx);
- // flip
+ // flip
SDL_RenderPresent(draw_ctx->renderer);
}