From 7664fdafb9a6d6f4aa3339fe38958b24b234218e Mon Sep 17 00:00:00 2001
From: quou <quou@disroot.org>
Date: Mon, 30 Sep 2024 19:01:53 +1000
Subject: player slashing

---
 1bitjam.c                    |  16 +++++++---------
 Makefile                     |   7 ++++++-
 animation.c                  |   8 ++++++--
 animation.h                  |   2 +-
 intermediate/arms.bmp        | Bin 0 -> 262282 bytes
 intermediate/slash_left.anm  |   6 ++++++
 intermediate/slash_right.anm |   6 ++++++
 obj.h                        |  20 +++++++++++++++++---
 particle.c                   |  28 ++++++++++++++++++++++++++++
 player.c                     |  31 +++++++++++++++++++++++++++----
 world.c                      |  37 +++++++++++++++++++++++++++++++++++++
 world.h                      |  29 +++++++++++++++++++++++++++++
 12 files changed, 170 insertions(+), 20 deletions(-)
 create mode 100644 intermediate/arms.bmp
 create mode 100644 intermediate/slash_left.anm
 create mode 100644 intermediate/slash_right.anm
 create mode 100644 particle.c
 create mode 100644 world.c
 create mode 100644 world.h

diff --git a/1bitjam.c b/1bitjam.c
index 619876e..8c63aa5 100644
--- a/1bitjam.c
+++ b/1bitjam.c
@@ -1,20 +1,18 @@
 #include "asset.h"
 #include "config.h"
-#include "map.h"
 #include "maths.h"
 #include "memory.h"
-#include "obj.h"
 #include "plat.h"
 #include "rect.h"
 #include "render.h"
+#include "world.h"
 
 int entrypoint(int argc, const char** argv, Arena* m) {
 	Heap h;
 	App* a;
 	FPS f;
 	Renderer r;
-	Player player;
-	Map map;
+	World* world;
 	(void)argc;
 	(void)argv;
 	init_maths();
@@ -26,19 +24,19 @@ int entrypoint(int argc, const char** argv, Arena* m) {
 	a = new_app(&h, game_name);
 	init_audio();
 	init_fps(&f, default_mpf);
-	generate_floor(&map, 0);
-	init_player(&player);
+	world = arena_alloc(m, sizeof world);
+	init_world(world);
+	generate_floor(&world->map, 0);
 	while (a->o) {
 		fps_begin(&f);
 		while (f.now >= f.next && a->o) {
 			app_begin(a);
 
-			update_player(&player, a, &map);
+			update_world(world, a);
 
 			ren_begin(&r, a->fb, viewport_w, viewport_h);
 			ren_clear(&r);
-			render_map(&map, &r);
-			ren_player(&player, &r);
+			ren_world(world, &r);
 			ren_end(&r);
 			app_end(a);
 			fps_update(&f);
diff --git a/Makefile b/Makefile
index 4c755b9..74ad6e3 100644
--- a/Makefile
+++ b/Makefile
@@ -49,16 +49,19 @@ sources = \
 	map.c \
 	maths.c \
 	memory.c \
+	particle.c \
 	physics.c \
 	plat.c \
 	player.c \
 	rect.c \
 	render.c \
+	world.c \
 
 image_sources = \
+	$(int_dir)/arms.bmp \
 	$(int_dir)/guy.bmp \
 	$(int_dir)/map.bmp \
-	$(int_dir)/mask.bmp
+	$(int_dir)/mask.bmp \
 
 anim_sources = \
 	$(int_dir)/guy_fall_left.anm \
@@ -69,6 +72,8 @@ anim_sources = \
 	$(int_dir)/guy_jump_right.anm \
 	$(int_dir)/guy_run_left.anm \
 	$(int_dir)/guy_run_right.anm \
+	$(int_dir)/slash_right.anm \
+	$(int_dir)/slash_left.anm \
 
 objects    = $(sources:%.c=%.o)
 images     = $(image_sources:$(int_dir)/%.bmp=$(data_dir)/%.img)
diff --git a/animation.c b/animation.c
index 388e29d..2010301 100644
--- a/animation.c
+++ b/animation.c
@@ -1,9 +1,13 @@
 #include "animation.h"
 #include "rect.h"
 
-void update_anim(const Animation* a, int* f, Rect* r) {
+int update_anim(const Animation* a, int* f, Rect* r) {
+	int done = 0;
 	f[0]++;
-	if (f[0] >= a->fc * a->s)
+	if (f[0] >= a->fc * a->s) {
 		f[0] = 0;
+		done = 1;
+	}
 	*r = ((const Rect*)&a[1])[f[0] / a->s];
+	return done;
 }
diff --git a/animation.h b/animation.h
index 983fed8..e894396 100644
--- a/animation.h
+++ b/animation.h
@@ -7,6 +7,6 @@ typedef struct Animation {
 	int fc, s;
 } Animation;
 
-void update_anim(const Animation* a, int* f, struct Rect* r);
+int update_anim(const Animation* a, int* f, struct Rect* r);
 
 #endif
diff --git a/intermediate/arms.bmp b/intermediate/arms.bmp
new file mode 100644
index 0000000..0b686f3
Binary files /dev/null and b/intermediate/arms.bmp differ
diff --git a/intermediate/slash_left.anm b/intermediate/slash_left.anm
new file mode 100644
index 0000000..b95a86d
--- /dev/null
+++ b/intermediate/slash_left.anm
@@ -0,0 +1,6 @@
+1
+{ 0,   17, 45, 17 }
+{ 45,  17, 45, 17 }
+{ 90,  17, 45, 17 }
+{ 135, 17, 45, 17 }
+{ 180, 17, 45, 17 }
diff --git a/intermediate/slash_right.anm b/intermediate/slash_right.anm
new file mode 100644
index 0000000..9e00005
--- /dev/null
+++ b/intermediate/slash_right.anm
@@ -0,0 +1,6 @@
+1
+{ 0,   0, 45, 17 }
+{ 45,  0, 45, 17 }
+{ 90,  0, 45, 17 }
+{ 135, 0, 45, 17 }
+{ 180, 0, 45, 17 }
diff --git a/obj.h b/obj.h
index 9a331b7..7f93ecc 100644
--- a/obj.h
+++ b/obj.h
@@ -4,8 +4,9 @@
 #include "rect.h"
 
 struct App;
-struct Renderer;
 struct Map;
+struct Renderer;
+struct World;
 
 typedef enum {
 	face_left,
@@ -17,6 +18,7 @@ typedef struct {
 	int frame;
 	int anim;
 	int grounded, headbutted, on_ramp, jumping;
+	int cooldown;
 	Face face;
 	Rect rect;
 } Player;
@@ -24,9 +26,21 @@ typedef struct {
 void init_player(Player* p);
 void update_player(
 	Player* p,
-	struct App* app,
+	struct World* w,
+	const struct App* app,
 	const struct Map* map
 );
-void ren_player(Player* p, struct Renderer* r);
+void ren_player(const Player* p, struct Renderer* r);
+
+typedef struct {
+	int x, y;
+	int frame, anim;
+	int bmp;
+	Rect rect;
+} Particle;
+
+void init_particle(Particle* p, int x, int y, int anim, int bmp);
+int update_particle(Particle* p);
+void ren_particle(const Particle* p, struct Renderer* r);
 
 #endif
diff --git a/particle.c b/particle.c
new file mode 100644
index 0000000..c10e3aa
--- /dev/null
+++ b/particle.c
@@ -0,0 +1,28 @@
+#include "animation.h"
+#include "asset.h"
+#include "obj.h"
+#include "render.h"
+
+void init_particle(Particle* p, int x, int y, int anim, int bmp) {
+	p->x = x;
+	p->y = y;
+	p->frame = 0;
+	p->anim = anim;
+	p->bmp = bmp;
+}
+
+int update_particle(Particle* p) {
+	const Animation* a = get_animation(p->anim);
+	return update_anim(a, &p->frame, &p->rect);
+}
+
+void ren_particle(const Particle* p, Renderer* r) {
+	const Bitmap* b = get_bitmap(p->bmp);
+	ren_map(
+		r,
+		p->x,
+		p->y,
+		&p->rect,
+		b
+	);
+}
diff --git a/player.c b/player.c
index a99f40b..77d0b01 100644
--- a/player.c
+++ b/player.c
@@ -6,6 +6,7 @@
 #include "physics.h"
 #include "plat.h"
 #include "render.h"
+#include "world.h"
 
 void init_player(Player* p) {
 	p->anim = asset_id_guy_run_right_anm;
@@ -18,6 +19,7 @@ void init_player(Player* p) {
 	p->headbutted = 0;
 	p->on_ramp = 0;
 	p->jumping = 0;
+	p->cooldown = 0;
 	p->face = face_right;
 }
 
@@ -46,12 +48,13 @@ void update_player_phys(Player* p, const Map* map) {
 	);
 }
 
-void update_player_move(Player* p, const App* a) {
+void update_player_move(Player* p, const App* a, World* w) {
 	int grounded = p->grounded < 3;
 	int mf = player_move_force;
 	int nanim, moving, t;
 	int jumping = p->jumping;
 	Face* face = &p->face;
+	p->cooldown--;
 	if (!grounded) {
 		mf = player_air_move_force;
 	}
@@ -89,6 +92,21 @@ void update_player_move(Player* p, const App* a) {
 		p->jumping = 1;
 		play_sound(500);
 	}
+	if (p->cooldown <= 0 && btn_just_pressed(a, btn_shoot)) {
+		int sx, sy;
+		int anim;
+		if (p->face == face_left) {
+			anim = asset_id_slash_left_anm;
+			sx = (p->x >> fbits) - 45;
+			sy = (p->y >> fbits);
+		} else {
+			anim = asset_id_slash_right_anm;
+			sx = (p->x >> fbits) + 16;
+			sy = (p->y >> fbits);
+		}
+		inst_particle(w, sx, sy, anim, asset_id_arms_img);
+		p->cooldown = 10;
+	}
 	jumping = p->jumping;
 	nanim = p->anim;
 	switch (p->face) {
@@ -120,13 +138,18 @@ void update_player_move(Player* p, const App* a) {
 	}
 }
 
-void update_player(Player* p, App* app, const Map* map) {
-	update_player_move(p, app);
+void update_player(
+	Player* p,
+	World* w,
+	const App* app,
+	const Map* map
+) {
+	update_player_move(p, app, w);
 	update_player_phys(p, map);
 	update_player_anim(p);
 }
 
-void ren_player(Player* p, struct Renderer* r) {
+void ren_player(const Player* p, struct Renderer* r) {
 	const Bitmap* b = get_bitmap(asset_id_guy_img);
 	ren_map(r, p->x >> fbits, p->y >> fbits, &p->rect, b);
 }
diff --git a/world.c b/world.c
new file mode 100644
index 0000000..e7777fd
--- /dev/null
+++ b/world.c
@@ -0,0 +1,37 @@
+#include "plat.h"
+#include "world.h"
+
+void init_world(World* w) {
+	w->particle_count = 0;
+	init_player(&w->player);
+}
+
+Particle* inst_particle(
+	World* w,
+	int x,
+	int y,
+	int anim,
+	int bmp
+) {
+	Particle* p;
+	assert(w->particle_count < max_particles);
+	p = &w->particles[w->particle_count++];
+	init_particle(p, x, y, anim, bmp);
+	return p;
+}
+
+void update_world(World* w, const App* a) {
+	int i;
+	update_player(&w->player, w, a, &w->map);
+	for (i = w->particle_count - 1; i >= 0; i--)
+		if (update_particle(&w->particles[i]))
+			w->particles[i] = w->particles[--w->particle_count];
+}
+
+void ren_world(const World* w, struct Renderer* r) {
+	int i;
+	ren_player(&w->player, r);
+	render_map(&w->map, r);
+	for (i = 0; i < w->particle_count; i++)
+		ren_particle(&w->particles[i], r);
+}
diff --git a/world.h b/world.h
new file mode 100644
index 0000000..bd3df31
--- /dev/null
+++ b/world.h
@@ -0,0 +1,29 @@
+#ifndef world_h
+#define world_h
+
+#include "map.h"
+#include "obj.h"
+
+#define max_particles 32
+
+struct Renderer;
+
+typedef struct World {
+	Particle particles[max_particles];
+	int particle_count;
+	Player player;
+	Map map;
+} World;
+
+void init_world(World* w);
+Particle* inst_particle(
+	World* w,
+	int x,
+	int y,
+	int anim,
+	int bmp
+);
+void update_world(World* w, const App* a);
+void ren_world(const World* w, struct Renderer* r);
+
+#endif
-- 
cgit v1.2.3-54-g00ecf