ZacharyZhang-NY
b4b4d67b92
A cross-cutting pass, each fix with a test that failed first. Veils: MyGo still hands a key to a base that turned off this frame, so every element key now goes through pixel.Shortcut, which an archtest enforces. Input handlers record and the build applies them only while enabled; the editor turns away a veil-frame letter or copy; value bases get a copy and keep only enabled turns. Popups give a held focus back to their opener when the veil lifts. Motion: S5 is enforced at the clock. Every Tick, Since, Step, Toward and Shot runs at 4-15 fps; blinks keep 1 Hz on 4 fps steps, fast animations step at 15, and drawn time is quantized to frames. Clocks stepping back: Since holds at zero without overflow, and k.Elapsed moves a stored start to now, so nothing goes negative, runs backward or indexes out of range. Also: logs count typed text instead of holding it, gallery names use glyphs the font has, removable rows are keyed, components take their own Options (archtest), and sweeps over all 508 demos check veiled keys, clicks, wheels, the clock stepping back and names.
91 lines
2.4 KiB
Go
91 lines
2.4 KiB
Go
package game
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import (
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"fmt"
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"strconv"
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"strings"
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"time"
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"github.com/egoist/mygo/ui"
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"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/pixel"
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)
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// Hit is a number rising from dot X, Y.
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type Hit struct {
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Value int
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Crit bool
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X, Y int
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at time.Time
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}
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type DamageNumbersOptions struct {
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// Width and Height are dots; zeros mean 160 by 80.
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Width, Height int
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}
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// life is a number's time; it dissolves the last half.
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const life = 800 * time.Millisecond
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// DamageNumbers floats hits up, dissolves, then drops them.
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func DamageNumbers(c *ui.Context, text string, hits *[]Hit, o DamageNumbersOptions) *ui.Element {
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k := pixel.K(c)
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w, h := pixel.Or("DamageNumbers Width", o.Width, 160), pixel.Or("DamageNumbers Height", o.Height, 80)
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// S5: hits rise in whole frames, fifteen a second.
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now := k.Now().Truncate(time.Second / 15)
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live := (*hits)[:0]
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for _, hit := range *hits {
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if hit.X < 0 || hit.X >= w || hit.Y < 0 || hit.Y >= h {
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panic(fmt.Sprintf("game: hit at %d,%d is off the %d×%d box", hit.X, hit.Y, w, h))
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}
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// A clock stepping back starts a hit again.
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if hit.at.IsZero() || now.Before(hit.at) {
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hit.at = now
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}
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if now.Sub(hit.at) < life {
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live = append(live, hit)
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}
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}
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*hits = live
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shown := append([]Hit(nil), live...)
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parts := make([]string, len(shown))
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for i, hit := range shown {
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parts[i] = strconv.Itoa(hit.Value)
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if hit.Crit {
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parts[i] += "!"
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}
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}
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if len(shown) > 0 {
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k.Tick(c, 15)
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}
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return ui.Box(c).Role(ui.RoleImage).Label(text).Description(strings.Join(parts, ", ")).Size(k.D(w), k.D(h)).Draw(func(p *ui.Painter, r ui.Rect) {
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g := k.Canvas(p, r)
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// Numbers wider than the box are cut at it.
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g.Clip(0, 0, w, h, func() { numbers(g, k, shown, now, w, h) })
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})
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}
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// numbers draws live hits, risen and dissolved by age.
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func numbers(g pixel.Canvas, k pixel.Kit, shown []Hit, now time.Time, w, h int) {
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for _, hit := range shown {
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t := float64(now.Sub(hit.at)) / float64(life)
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ink, sc, s := pixel.Ink, 1, strconv.Itoa(hit.Value)
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if hit.Crit {
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ink, sc, s = pixel.Warn, 2, s+"!"
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}
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// Wide or high numbers are pushed back inside the box.
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tw, th := pixel.Measure(s)*sc, pixel.LineHeight*sc
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x, y := max(0, min(w-tw, hit.X-tw/2)), max(0, min(h-th, hit.Y-th/2))
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// It rises 12 dots and dissolves; reduced, it holds still.
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if k.Reduce() {
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g.Text(x, y, s, ink, sc)
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continue
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}
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level := 16
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if t > 0.5 {
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level = int(16 * (1 - t) * 2)
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}
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g.TextVeil(x, max(0, y-int(12*t)), s, ink, level, sc)
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}
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}
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