my ziglings
Merge branch 'heatray'
Dave Gauer
(Jul 31, 2022, 11:35 AM EDT)
18c761d8
00796028
+13
-8
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-5
exercises/047_methods.zig
+10
-5
exercises/047_methods.zig
···
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.health = strength * 5,
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};
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}
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};
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// Your trusty weapon. Zap those aliens!
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const HeatRay = struct {
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damage: u8,
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// We love this method:
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pub fn zap(self: *Alien, damage: u8) void {
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self.health -= if (damage >= self.health) self.health else damage;
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pub fn zap(self: *HeatRay, alien: *Alien) void {
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alien.health -= if (self.damage >= alien.health) alien.health else self.damage;
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}
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};
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···
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};
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var aliens_alive = aliens.len;
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var heat_ray_strength: u8 = 7; // We've been given a heat ray weapon.
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var heat_ray = HeatRay{ .damage = 7 }; // We've been given a heat ray weapon.
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// We'll keep checking to see if we've killed all the aliens yet.
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while (aliens_alive > 0) {
···
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// Loop through every alien...
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for (aliens) |*alien| {
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// *** Zap the Alien Here! ***
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???.zap(heat_ray_strength);
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// *** Zap the alien with the heat ray here! ***
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???.zap(???);
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// If the alien's health is still above 0, it's still alive.
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if (alien.health > 0) aliens_alive += 1;