TheIndustriousRabbit
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dos-vga-arena-shooter-game
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finish spritesheet handling, hook up to makefile

This commit is contained in:
John Bintz 2024-02-24 10:38:46 -05:00
parent b1554fda84
commit 35d7ba95b9
10 changed files with 143 additions and 44 deletions
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15
arena.c
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@ -25,19 +25,28 @@ void setupWallSprites() {
buildCompiledSprite(
&sprite_arenaWallTop,
&arenaWallTop,
20, 20
SPRITE_ARENAWALLTOP_WIDTH,
SPRITE_ARENAWALLTOP_HEIGHT,
SPRITE_ARENAWALLTOP_OFFSET_X,
SPRITE_ARENAWALLTOP_OFFSET_Y
);
buildCompiledSprite(
&sprite_arenaWallSide,
&arenaWallSide,
20, 20
SPRITE_ARENAWALLSIDE_WIDTH,
SPRITE_ARENAWALLSIDE_HEIGHT,
SPRITE_ARENAWALLSIDE_OFFSET_X,
SPRITE_ARENAWALLSIDE_OFFSET_Y
);
buildCompiledSprite(
&sprite_arenaFloor,
&arenaFloor,
20, 20
SPRITE_ARENAFLOOR_WIDTH,
SPRITE_ARENAFLOOR_HEIGHT,
SPRITE_ARENAFLOOR_OFFSET_X,
SPRITE_ARENAFLOOR_OFFSET_Y
);
}

16
bin/build_spritesheet_asm.rb
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@ -68,9 +68,10 @@ C_TEMPLATE = <<~C
<% sprites.each do |sprite| %>
extern void <%= sprite.function_name %>(byte *);
<% sprite.constants.each do |constant, value| %>
#define <%= constant %> (<%= value %>)
<% end %>
<% end %>
// TODO: something with bounds checking here
#endif
C
@ -102,6 +103,17 @@ class AssemblerSprite
"#{@prefix}_#{@name}"
end
def constants
[
['WIDTH', @pixel_data[0].length],
['HEIGHT', @pixel_data.length],
['OFFSET_X', @offset_x],
['OFFSET_Y', @offset_y]
].map do |suffix, value|
["#{function_name.upcase}_#{suffix}", value]
end
end
def bytes
return @bytes if defined?(@bytes)

55
game.c
View File

@ -18,7 +18,7 @@
struct BMPImage spritesheetImage;
struct VGAColor vgaColors[256];
struct SpriteRender rabbit, mouse, bullet, enemy;
struct CompiledSpriteRender rabbit, mouse, bullet, enemy;
struct RabbitPosition rabbitPosition = {
.rabbitPosition = { 60, 60 },
.rabbitLimits = { { 20, 20 }, { 180, 180 } },
@ -162,40 +162,43 @@ void maybeSpawnEnemy() {
}
void setupEnemySprites() {
buildSpriteFromSpritesheet(
&spritesheetImage,
buildCompiledSprite(
&sprite_enemy,
&enemy,
0, 20, 16, 16
SPRITE_ENEMY_WIDTH,
SPRITE_ENEMY_HEIGHT,
SPRITE_ENEMY_OFFSET_X,
SPRITE_ENEMY_OFFSET_Y
);
}
void setupRabbitSprites() {
buildSpriteFromSpritesheet(
&spritesheetImage,
buildCompiledSprite(
&sprite_rabbit,
&rabbit,
0, 20, 16, 16
SPRITE_RABBIT_WIDTH,
SPRITE_RABBIT_HEIGHT,
SPRITE_RABBIT_OFFSET_X,
SPRITE_RABBIT_OFFSET_Y
);
rabbit.offsetX = 8;
rabbit.offsetY = 15;
buildSpriteFromSpritesheet(
&spritesheetImage,
buildCompiledSprite(
&sprite_mouse,
&mouse,
16, 20, 8, 8
SPRITE_MOUSE_WIDTH,
SPRITE_MOUSE_HEIGHT,
SPRITE_MOUSE_OFFSET_X,
SPRITE_MOUSE_OFFSET_Y
);
mouse.offsetX = 4;
mouse.offsetY = 4;
buildSpriteFromSpritesheet(
&spritesheetImage,
buildCompiledSprite(
&sprite_bullet,
&bullet,
16, 28, 4, 4
SPRITE_BULLET_WIDTH,
SPRITE_BULLET_HEIGHT,
SPRITE_BULLET_OFFSET_X,
SPRITE_BULLET_OFFSET_Y
);
bullet.offsetX = 1;
bullet.offsetY = 1;
}
struct MouseStatus mouseStatus;
@ -204,7 +207,7 @@ void renderMouse() {
mouse.x = rabbitPosition.mousePosition[0];
mouse.y = rabbitPosition.mousePosition[1];
drawSprite(&mouse);
drawCompiledSprite(&mouse);
drawPixel(rabbitPosition.mouseDotPosition[0], rabbitPosition.mouseDotPosition[1], 2);
}
@ -212,7 +215,7 @@ void renderRabbit() {
rabbit.x = rabbitPosition.rabbitPosition[0];
rabbit.y = rabbitPosition.rabbitPosition[1];
drawSprite(&rabbit);
drawCompiledSprite(&rabbit);
}
void renderEnemies() {
@ -224,7 +227,7 @@ void renderEnemies() {
enemy.x = enemyPosition[i].enemyPosition[0];
enemy.y = enemyPosition[i].enemyPosition[1];
drawSprite(&enemy);
drawCompiledSprite(&enemy);
}
}
@ -237,7 +240,7 @@ void renderRabbitBullets() {
bullet.x = rabbitBulletPosition[i].x;
bullet.y = rabbitBulletPosition[i].y;
drawSprite(&bullet);
drawCompiledSprite(&bullet);
}
}

3
makefile
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@ -13,6 +13,9 @@ system/system.lib: .SYMBOLIC
.asm.o:
wasm $<
sprites.asm: sprtsht.bmp spritesheet.yml
bin/build_spritesheet_asm.rb
game.exe: $(obj) system/system.lib
wcl386 -q -bt=dos -l=dos4g $(obj) system/system.lib

16
sprites.asm
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@ -1251,12 +1251,12 @@ sprite_rabbit_:
mov BYTE PTR [eax + -1921], 1
mov BYTE PTR [eax + -1920], 1
mov BYTE PTR [eax + -1602], 1
mov BYTE PTR [eax + -1601], 1
mov BYTE PTR [eax + -1600], 1
mov BYTE PTR [eax + -1601], 2
mov BYTE PTR [eax + -1600], 2
mov BYTE PTR [eax + -1599], 1
mov BYTE PTR [eax + -1282], 1
mov BYTE PTR [eax + -1281], 1
mov BYTE PTR [eax + -1280], 1
mov BYTE PTR [eax + -1281], 2
mov BYTE PTR [eax + -1280], 2
mov BYTE PTR [eax + -1279], 1
mov BYTE PTR [eax + -961], 1
mov BYTE PTR [eax + -960], 1
@ -1351,12 +1351,12 @@ sprite_enemy_:
mov BYTE PTR [eax + -1921], 1
mov BYTE PTR [eax + -1920], 1
mov BYTE PTR [eax + -1602], 1
mov BYTE PTR [eax + -1601], 1
mov BYTE PTR [eax + -1600], 1
mov BYTE PTR [eax + -1601], 2
mov BYTE PTR [eax + -1600], 2
mov BYTE PTR [eax + -1599], 1
mov BYTE PTR [eax + -1282], 1
mov BYTE PTR [eax + -1281], 1
mov BYTE PTR [eax + -1280], 1
mov BYTE PTR [eax + -1281], 2
mov BYTE PTR [eax + -1280], 2
mov BYTE PTR [eax + -1279], 1
mov BYTE PTR [eax + -961], 1
mov BYTE PTR [eax + -960], 1

63
sprites.h
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@ -6,19 +6,80 @@
extern void sprite_arenaWallTop(byte *);
#define SPRITE_ARENAWALLTOP_WIDTH (20)
#define SPRITE_ARENAWALLTOP_HEIGHT (20)
#define SPRITE_ARENAWALLTOP_OFFSET_X (0)
#define SPRITE_ARENAWALLTOP_OFFSET_Y (0)
extern void sprite_arenaWallSide(byte *);
#define SPRITE_ARENAWALLSIDE_WIDTH (20)
#define SPRITE_ARENAWALLSIDE_HEIGHT (20)
#define SPRITE_ARENAWALLSIDE_OFFSET_X (0)
#define SPRITE_ARENAWALLSIDE_OFFSET_Y (0)
extern void sprite_arenaFloor(byte *);
#define SPRITE_ARENAFLOOR_WIDTH (20)
#define SPRITE_ARENAFLOOR_HEIGHT (20)
#define SPRITE_ARENAFLOOR_OFFSET_X (0)
#define SPRITE_ARENAFLOOR_OFFSET_Y (0)
extern void sprite_rabbit(byte *);
#define SPRITE_RABBIT_WIDTH (16)
#define SPRITE_RABBIT_HEIGHT (16)
#define SPRITE_RABBIT_OFFSET_X (8)
#define SPRITE_RABBIT_OFFSET_Y (8)
extern void sprite_mouse(byte *);
#define SPRITE_MOUSE_WIDTH (8)
#define SPRITE_MOUSE_HEIGHT (8)
#define SPRITE_MOUSE_OFFSET_X (4)
#define SPRITE_MOUSE_OFFSET_Y (4)
extern void sprite_bullet(byte *);
#define SPRITE_BULLET_WIDTH (4)
#define SPRITE_BULLET_HEIGHT (4)
#define SPRITE_BULLET_OFFSET_X (1)
#define SPRITE_BULLET_OFFSET_Y (1)
extern void sprite_enemy(byte *);
#define SPRITE_ENEMY_WIDTH (16)
#define SPRITE_ENEMY_HEIGHT (16)
#define SPRITE_ENEMY_OFFSET_X (8)
#define SPRITE_ENEMY_OFFSET_Y (8)
// TODO: something with bounds checking here
#endif

BIN
spritesheet.xcf
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Binary file not shown.

BIN
sprtsht.bmp
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Binary file not shown.
Side by Side Swipe Overlay

Before

Width:  |  Height:  |  Size: 39 KiB

After

Width:  |  Height:  |  Size: 39 KiB

8
system/vga.c
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@ -54,11 +54,15 @@ void buildCompiledSprite(
void (*code)(byte *),
struct CompiledSpriteRender *compiledSpriteRender,
int width,
int height
int height,
int offsetX,
int offsetY
) {
compiledSpriteRender->code = code;
compiledSpriteRender->width = width;
compiledSpriteRender->height = height;
compiledSpriteRender->offsetX = offsetX;
compiledSpriteRender->offsetY = offsetY;
}
void drawPixel(int x, int y, int color) {
@ -101,7 +105,7 @@ void drawCompiledSprite(struct CompiledSpriteRender* compiledSprite) {
compiledSprite->code(drawBufferPos);
}
void getSpriteBounds(struct SpriteRender *sprite, struct SpriteBounds *bounds) {
void getSpriteBounds(struct CompiledSpriteRender *sprite, struct SpriteBounds *bounds) {
bounds->top = sprite->y - sprite->offsetY;
bounds->bottom = bounds->top + sprite->height;

11
system/vga.h
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@ -34,6 +34,8 @@ struct CompiledSpriteRender {
int y;
unsigned int width;
unsigned int height;
int offsetX;
int offsetY;
};
struct SpriteBounds {
@ -48,8 +50,13 @@ void drawPixel(int x, int y, int color);
void drawSprite(struct SpriteRender *sprite);
void drawCompiledSprite(struct CompiledSpriteRender *compiledSprite);
void buildSpriteFromSpritesheet(struct BMPImage*, struct SpriteRender*, int, int, int, int);
void buildCompiledSprite(void (*)(byte *), struct CompiledSpriteRender*, int width, int height);
void getSpriteBounds(struct SpriteRender *sprite, struct SpriteBounds *bounds);
void buildCompiledSprite(
void (*)(byte *),
struct CompiledSpriteRender*,
int width, int height,
int offsetX, int offsetY
);
void getSpriteBounds(struct CompiledSpriteRender *sprite, struct SpriteBounds *bounds);
byte *initializeDrawBuffer();
byte *getDrawBuffer();