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examples: add subtle light and shadow effects to the breakout game, to give it a little depth (#23885)

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larpon 2025-03-08 23:44:33 +01:00 • committed by GitHub
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1 changed files with 36 additions and 7 deletions
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43
examples/breakout/breakout.v
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@ -10,6 +10,9 @@ const designed_width = 600
const designed_height = 800
const brick_width = 53
const brick_height = 20
const bevel_size = int(brick_height * 0.18)
const highlight_color = gx.rgba(255, 255, 255, 65)
const shade_color = gx.rgba(0, 0, 0, 65)
struct Brick {
mut:
@ -127,15 +130,11 @@ fn (mut g Game) draw() {
sgl.scale(f32(ws.width) / f32(designed_width), f32(ws.height) / f32(designed_height),
0)
roffset, rradius := -5, 18
g.ctx.draw_circle_filled(g.paddle_x - roffset, g.height, rradius, gx.blue)
g.ctx.draw_circle_filled(g.paddle_x + g.paddle_w + roffset, g.height, rradius, gx.blue)
g.ctx.draw_rect_filled(g.paddle_x, g.height - g.paddle_h + 2, g.paddle_w, g.paddle_h,
gx.blue)
g.ctx.draw_circle_filled(g.ball_x, g.ball_y, g.ball_r, gx.red)
g.draw_paddle()
g.draw_ball()
for brick in g.bricks {
if brick.alive {
g.ctx.draw_rect_filled(brick.x, brick.y, brick.w, brick.h, brick.c)
g.draw_brick(brick)
}
}
label1 := 'Level: ${g.nlevels:02} Points: ${g.npoints:06}'
@ -147,6 +146,36 @@ fn (mut g Game) draw() {
g.ctx.end()
}
fn (g &Game) draw_ball() {
g.ctx.draw_circle_filled(g.ball_x, g.ball_y, g.ball_r, gx.red)
mut ball_r_less := g.ball_r
for _ in 0 .. 3 {
ball_r_less *= 0.8
g.ctx.draw_circle_filled(g.ball_x - g.ball_r + ball_r_less, g.ball_y - g.ball_r +
ball_r_less, ball_r_less, highlight_color)
}
}
fn (g &Game) draw_paddle() {
roffset, rradius := -5, 18
g.ctx.draw_circle_filled(g.paddle_x - roffset, g.height, rradius, gx.blue)
g.ctx.draw_circle_filled(g.paddle_x + g.paddle_w + roffset, g.height, rradius, gx.blue)
g.ctx.draw_rect_filled(g.paddle_x, g.height - g.paddle_h + 2, g.paddle_w, g.paddle_h,
gx.blue)
g.ctx.draw_rect_filled(g.paddle_x, g.height - g.paddle_h + 2, g.paddle_w, bevel_size,
highlight_color)
}
fn (g &Game) draw_brick(brick Brick) {
g.ctx.draw_rect_filled(brick.x, brick.y, brick.w, brick.h, brick.c)
g.ctx.draw_rect_filled(brick.x, brick.y, brick.w, bevel_size, highlight_color)
g.ctx.draw_rect_filled(brick.x, brick.y, bevel_size, brick.h - bevel_size, highlight_color)
g.ctx.draw_rect_filled(brick.x + brick.w - bevel_size, brick.y, bevel_size, brick.h - bevel_size,
shade_color)
g.ctx.draw_rect_filled(brick.x, brick.y + brick.h - bevel_size, brick.w, bevel_size,
shade_color)
}
fn (mut g Game) game_over() {
g.init_bricks()
g.npoints, g.nlevels, g.npaddles = 0, 1, 5