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-rw-r--r--game.scm113
-rw-r--r--images/player-bullets.asebin523 -> 523 bytes
-rw-r--r--images/player-bullets.pngbin175 -> 194 bytes
3 files changed, 66 insertions, 47 deletions
diff --git a/game.scm b/game.scm
index cf72933..25a4986 100644
--- a/game.scm
+++ b/game.scm
@@ -396,27 +396,33 @@
bullet-pool?
(length bullet-pool-length set-bullet-pool-length!)
(capacity bullet-pool-capacity set-bullet-pool-capacity!)
+ (image bullet-pool-image set-bullet-pool-image!)
(bullets bullet-pool-bullets set-bullet-pool-bullets!))
- ;; per bullet: type, x, y, dx, dy
- (define %bullet-size (+ 4 8 8 8 8))
- (define (make-bullet-pool capacity)
+ (define bullet-tile-width 16.0)
+ (define bullet-tile-height 16.0)
+ ;; per bullet: type, tile-x, x, y, w, h, dx, dy
+ (define %bullet-size (+ 4 8 8 8 8 8 8 8))
+ (define (make-bullet-pool capacity image)
(let ((bullets (make-bytevector (* capacity %bullet-size))))
- (%make-bullet-pool 0 capacity bullets)))
+ (%make-bullet-pool 0 capacity image bullets)))
(define (bullet-pool-offset i)
(* i %bullet-size))
- (define (bullet-pool-add! pool type x y dx dy)
+ (define (bullet-pool-add! pool type x y w h dx dy)
(match pool
- (#('bullet-pool length capacity bullets)
+ (#('bullet-pool length capacity image bullets)
(let ((offset (bullet-pool-offset length)))
(s32-set! bullets offset type)
- (f64-set! bullets (+ offset 4) x)
- (f64-set! bullets (+ offset 12) y)
- (f64-set! bullets (+ offset 20) dx)
- (f64-set! bullets (+ offset 28) dy)
+ (f64-set! bullets (+ offset 4) (* type bullet-tile-width))
+ (f64-set! bullets (+ offset 12) x)
+ (f64-set! bullets (+ offset 20) y)
+ (f64-set! bullets (+ offset 28) w)
+ (f64-set! bullets (+ offset 36) h)
+ (f64-set! bullets (+ offset 44) dx)
+ (f64-set! bullets (+ offset 52) dy)
(set-bullet-pool-length! pool (+ length 1))))))
(define (bullet-pool-remove! pool i)
(match pool
- (#('bullet-pool length capacity bullets)
+ (#('bullet-pool length capacity image bullets)
(when (and (>= i 0) (< i length))
(let ((at (bullet-pool-offset i))
(start (bullet-pool-offset (- length 1))))
@@ -426,39 +432,45 @@
(set-bullet-pool-length! pool 0))
(define (bullet-pool-update! pool collide)
(match pool
- (#('bullet-pool length capacity bullets)
+ (#('bullet-pool length capacity image bullets)
(let loop ((i 0) (k length))
(when (< i k)
(let* ((offset (bullet-pool-offset i))
- (x (f64-ref bullets (+ offset 4)))
- (y (f64-ref bullets (+ offset 12)))
- (dx (f64-ref bullets (+ offset 20)))
- (dy (f64-ref bullets (+ offset 28)))
+ (x (f64-ref bullets (+ offset 12)))
+ (y (f64-ref bullets (+ offset 20)))
+ (w (f64-ref bullets (+ offset 28)))
+ (h (f64-ref bullets (+ offset 36)))
+ (dx (f64-ref bullets (+ offset 44)))
+ (dy (f64-ref bullets (+ offset 52)))
(x* (+ x dx))
(y* (+ y dy)))
(cond
- ;; TODO: different bullet hitbox sizes.
- ((collide x y 2.0 2.0)
+ ((collide x* y* w h)
(bullet-pool-remove! pool i)
(loop i (- k 1)))
(else
- (f64-set! bullets (+ offset 4) x*)
- (f64-set! bullets (+ offset 12) y*)
+ (f64-set! bullets (+ offset 12) x*)
+ (f64-set! bullets (+ offset 20) y*)
(loop (+ i 1) k)))))))))
- (define (draw-bullets pool image w h)
+ (define (draw-bullets pool)
(match pool
- (#('bullet-pool length capacity bullets)
+ (#('bullet-pool length capacity image bullets)
(do ((i 0 (+ i 1)))
((= i length))
(let* ((offset (bullet-pool-offset i))
- (type (s32-ref bullets offset))
- (x (f64-ref bullets (+ offset 4)))
- (y (f64-ref bullets (+ offset 12))))
- (draw-image context image (* type w) 0.0 w h
- (- x (/ w 2.0)) (- y (/ w 2.0)) w h))))))
+ (tx (f64-ref bullets (+ offset 4)))
+ (x (f64-ref bullets (+ offset 12)))
+ (y (f64-ref bullets (+ offset 20)))
+ (w (f64-ref bullets (+ offset 28)))
+ (h (f64-ref bullets (+ offset 36))))
+ (draw-image context image (pk tx) 0.0
+ bullet-tile-width bullet-tile-height
+ (- x (/ bullet-tile-width 2.0))
+ (- y (/ bullet-tile-height 2.0))
+ bullet-tile-width bullet-tile-height))))))
- (define player-bullets (make-bullet-pool 200))
- (define enemy-bullets (make-bullet-pool 400))
+ (define player-bullets (make-bullet-pool 200 image:player-bullets))
+ (define enemy-bullets (make-bullet-pool 400 image:enemy-bullets))
;; Scrolling level:
(define *scroll* 0.0)
@@ -578,7 +590,8 @@
(size enemy-size set-enemy-size!)
(stationary? enemy-stationary? set-enemy-stationary!)
(velocity enemy-velocity set-enemy-velocity!)
- (script enemy-script set-enemy-script!))
+ (script enemy-script set-enemy-script!)
+ (points enemy-points set-enemy-points!))
(define (enemy-x enemy)
(vec2-x (enemy-position enemy)))
(define (enemy-y enemy)
@@ -593,18 +606,18 @@
(vec2-y (enemy-velocity enemy)))
(define (enemy-damage! enemy damage)
(match enemy
- (#('enemy type health _ _ _ _ _)
+ (#('enemy type health _ _ _ _ _ _)
(set-enemy-health! enemy (- health damage)))))
(define (enemy-dead? enemy)
(<= (enemy-health enemy) 0))
(define (enemy-out-of-bounds? enemy)
(match enemy
- (#('enemy _ _ position size _ _ _)
+ (#('enemy _ _ position size _ _ _ _)
(out-of-bounds? (vec2-x position) (vec2-y position)
(vec2-x size) (vec2-y size)))))
(define (enemy-within-rect? enemy x y w h)
(match enemy
- (#('enemy _ _ position size _ _ _)
+ (#('enemy _ _ position size _ _ _ _)
(let* ((w* (vec2-x size))
(h* (vec2-y size))
(x* (- (vec2-x position) (/ w* 2.0)))
@@ -620,7 +633,7 @@
(script-cancel! script))))
(define (enemy-update! enemy)
(match enemy
- (#('enemy _ _ position size stationary? velocity _)
+ (#('enemy _ _ position size stationary? velocity _ _)
(if stationary?
(set-vec2-y! position (+ (vec2-y position) (- *scroll* *last-scroll*)))
(begin
@@ -628,7 +641,7 @@
(set-vec2-y! position (+ (vec2-y position) (vec2-y velocity))))))))
(define (enemy-draw enemy)
(match enemy
- (#('enemy type _ position size _ _ _)
+ (#('enemy type _ position size _ _ _ _)
(let* ((t 0.0)
(x (vec2-x position))
(y (vec2-y position))
@@ -689,7 +702,9 @@
((or (enemy-dead? enemy)
(enemy-out-of-bounds? enemy))
(when (enemy-dead? enemy)
- (sound-effect-play sound:explosion))
+ (sound-effect-play sound:explosion)
+ (set! *player-score*
+ (+ *player-score* (enemy-points enemy))))
(enemy-pool-remove! pool i)
(loop i (- k 1)))
(else
@@ -723,12 +738,13 @@
(bullet-pool-add! enemy-bullets 0
(enemy-x enemy)
(enemy-y enemy)
+ 2.0 2.0
(* (vec2-x v) speed)
(* (vec2-y v) speed)))
(wait 30)
(loop (+ theta 0.2)))))
(let ((enemy (make-enemy 'foo 20 (vec2 x y) (vec2 16.0 16.0)
- #t (vec2 0.0 0.0) script)))
+ #t (vec2 0.0 0.0) script 100)))
(enemy-pool-add! enemies enemy)))
;; Player state:
@@ -749,6 +765,7 @@
(define *player-lives* %default-lives)
(define *player-visible?* #t)
(define *player-invincible?* #f)
+ (define *player-score* 0)
;; left, right, down, up, fire, focus
(define key-state (vector #f #f #f #f #f #f))
(define (update-player-velocity!)
@@ -838,15 +855,18 @@
(bullet-pool-add! player-bullets 1
(vec2-x player-position)
(vec2-y player-position)
+ 6.0 6.0
0.0 (- player-bullet-speed))
(begin
(bullet-pool-add! player-bullets 0
(- (vec2-x player-position) 6.0)
(vec2-y player-position)
+ 3.0 4.0
0.0 (- player-bullet-speed))
(bullet-pool-add! player-bullets 0
(+ (vec2-x player-position) 8.0)
(vec2-y player-position)
+ 3.0 4.0
0.0 (- player-bullet-speed))))
(set! *player-fire-counter* 0))))
(define (draw-player)
@@ -894,10 +914,10 @@
(clear-rect context 0.0 0.0 *canvas-width* *canvas-height*))
(define (draw-player-bullets)
- (draw-bullets player-bullets image:player-bullets 8.0 8.0))
+ (draw-bullets player-bullets))
(define (draw-enemy-bullets)
- (draw-bullets enemy-bullets image:enemy-bullets 16.0 16.0))
+ (draw-bullets enemy-bullets))
(define (draw-background image parallax)
(let ((scroll (remainder (* *scroll* parallax) game-height)))
@@ -915,14 +935,12 @@
;; TODO: Don't strings every frame when the UI values rarely
;; change.
(set-fill-color! context "#ffffff")
- (set-font! context "bold 8px monospace")
+ (set-font! context "bold 16px monospace")
(set-text-align! context "right")
(fill-text context (string-append "x" (number->string *player-lives*))
(- game-width 4.0) y)
- ;; TODO: Add scoring.
(set-text-align! context "left")
- (fill-text context (string-append "score " (number->string 0))
- 4.0 y)))
+ (fill-text context (number->string *player-score*) 4.0 y)))
(define (draw time)
(clear-screen)
@@ -941,17 +959,17 @@
(match *game-state*
('game-over
(set-fill-color! context "#ffffff")
- (set-font! context "bold 24px monospace")
+ (set-font! context "bold 36px monospace")
(set-text-align! context "center")
(fill-text context "GAME OVER" (/ game-width 2.0) (/ game-height 2.0)))
('game-win
(set-fill-color! context "#ffffff")
- (set-font! context "bold 24px monospace")
+ (set-font! context "bold 36px monospace")
(set-text-align! context "center")
(fill-text context "WELL DONE" (/ game-width 2.0) (/ game-height 2.0)))
('paused
(set-fill-color! context "#ffffff")
- (set-font! context "bold 24px monospace")
+ (set-font! context "bold 36px monospace")
(set-text-align! context "center")
(fill-text context "PAUSED" (/ game-width 2.0) (/ game-height 2.0)))
(_ #t))
@@ -971,7 +989,8 @@
(set! *player-lives* %default-lives)
(set! *player-invincible?* #f)
(set! *player-visible?* #t)
- (set! *player-fire-counter* 0))
+ (set! *player-fire-counter* 0)
+ (set! *player-score* 0))
(define (on-key-down event)
(let ((code (keyboard-event-code event)))
diff --git a/images/player-bullets.ase b/images/player-bullets.ase
index 354b729..ddb62c3 100644
--- a/images/player-bullets.ase
+++ b/images/player-bullets.ase
Binary files differ
diff --git a/images/player-bullets.png b/images/player-bullets.png
index 7c80630..ef1e432 100644
--- a/images/player-bullets.png
+++ b/images/player-bullets.png
Binary files differ
generated by cgit v1.2.3 (git 2.25.4) at 2024-11-22 06:47:30 +0000