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diff --git a/src/const.hpp b/src/const.hpp
index aba54f2..8651d89 100644
--- a/src/const.hpp
+++ b/src/const.hpp
@@ -1,13 +1,9 @@
+#pragma once
#include
-#ifndef CONST_NS
-#define CONST_NS
-
constexpr int SCREEN_WIDTH = 1600;
constexpr int SCREEN_HEIGHT = 1200;
constexpr int WORLD_WIDTH = 20000;
constexpr int WORLD_HEIGHT = 200000;
constexpr int TARGET_FPS = 120;
constexpr Uint64 TARGET_FRAME_TIME_NS = 1'000'000'000 / TARGET_FPS;
-
-#endif
\ No newline at end of file
diff --git a/src/macro.hpp b/src/macro.hpp
new file mode 100644
index 0000000..6d28118
--- /dev/null
+++ b/src/macro.hpp
@@ -0,0 +1,3 @@
+#pragma once
+
+#define FIND_CENTER(rect) {rect.x + (rect.w / 2), rect.y + (rect.h / 2)}
\ No newline at end of file
diff --git a/src/main.cpp b/src/main.cpp
index 232aefd..be39dc1 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,21 +1,28 @@
#include "const.hpp"
+#include "projectiles.hpp"
#include "types.hpp"
#include
#include
#include
+#include
#include
#include
#include
#include
+#include
#include
#include
+#include
#include
+#include
sdl_session main_sdl_session;
+SDL_DisplayMode *mode;
#define WIDTH_RATIO 15
#define HEIGHT_RATIO 41.53846153846154
-#define MIN_INPUT_DELAY 0
+#define MIN_INPUT_DELAY_MOVEMENT 0
+#define MIN_INPUT_DELAY_FIRE 200
int main(int argc, char *argv[]) {
SDL_Init(SDL_INIT_VIDEO);
@@ -29,35 +36,36 @@ int main(int argc, char *argv[]) {
main_sdl_session.renderer =
SDL_CreateRenderer(main_sdl_session.window, "gpu,vulcan");
- SDL_Texture *player_ship_texture = nullptr;
- {
- SDL_IOStream *texture_file = SDL_IOFromFile("assets/player_ship.svg", "r");
- SDL_Surface *player_ship_surface = IMG_LoadSizedSVG_IO(
- texture_file,
- static_cast(static_cast(mode->w) /
- static_cast(WIDTH_RATIO)),
- static_cast(static_cast(mode->h) /
- static_cast(HEIGHT_RATIO)));
+ player_ship_type player_ship = [&mode]() -> player_ship_type {
+ SDL_Texture *player_ship_texture = nullptr;
+ SDL_IOStream *texture_file = SDL_IOFromFile("assets/player_ship.svg", "r");
+
+ float ship_width = static_cast(static_cast(mode->w) /
+ static_cast(WIDTH_RATIO));
+ float ship_height = static_cast(static_cast(mode->h) /
+ static_cast(HEIGHT_RATIO));
+
+ SDL_Surface *player_ship_surface =
+ IMG_LoadSizedSVG_IO(texture_file, ship_width, ship_height);
SDL_CloseIO(texture_file);
player_ship_texture = SDL_CreateTextureFromSurface(
main_sdl_session.renderer, player_ship_surface);
SDL_DestroySurface(player_ship_surface);
- }
- SDL_FRect player_ship_rect = {
- 0, 0,
- static_cast(static_cast(mode->w) /
- static_cast(WIDTH_RATIO)),
- static_cast(static_cast(mode->h) /
- static_cast(HEIGHT_RATIO))};
+ SDL_FRect player_ship_rect = {0, 0, ship_width, ship_height};
+ SDL_FPoint gun_offset = {ship_width * 0.9f, ship_height * 0.9f};
+
+ return {player_ship_rect, gun_offset, player_ship_texture};
+ }();
bool running = true;
Uint64 lastFrameTime = SDL_GetTicksNS();
float deltaTime = 0.0f;
Uint8 player_ship_speed = 1;
+ std::vector projectiles;
while (running) {
const Uint64 frameStart = SDL_GetTicksNS();
@@ -72,35 +80,61 @@ int main(int argc, char *argv[]) {
}
}
- const bool *keystate = SDL_GetKeyboardState(NULL);
- static Uint32 last_toggle_direction[4];
- std::memset(last_toggle_direction, 0, sizeof(last_toggle_direction));
- if ((keystate[SDL_SCANCODE_DOWN] || keystate[SDL_SCANCODE_S]) &&
- (SDL_GetTicks() - last_toggle_direction[0] > MIN_INPUT_DELAY)) {
- player_ship_rect.y += player_ship_speed;
- last_toggle_direction[0] = SDL_GetTicks();
- }
- if ((keystate[SDL_SCANCODE_UP] || keystate[SDL_SCANCODE_W]) &&
- (SDL_GetTicks() - last_toggle_direction[1] > MIN_INPUT_DELAY)) {
- player_ship_rect.y -= player_ship_speed;
- last_toggle_direction[1] = SDL_GetTicks();
- }
- if ((keystate[SDL_SCANCODE_RIGHT] || keystate[SDL_SCANCODE_D]) &&
- (SDL_GetTicks() - last_toggle_direction[2] > MIN_INPUT_DELAY)) {
- player_ship_rect.x += player_ship_speed;
- last_toggle_direction[2] = SDL_GetTicks();
- }
- if ((keystate[SDL_SCANCODE_LEFT] || keystate[SDL_SCANCODE_A]) &&
- (SDL_GetTicks() - last_toggle_direction[3] > MIN_INPUT_DELAY)) {
- player_ship_rect.x -= player_ship_speed;
- last_toggle_direction[3] = SDL_GetTicks();
+ {
+ const bool *keystate = SDL_GetKeyboardState(NULL);
+ static Uint32 last_toggle_direction[4];
+ std::memset(last_toggle_direction, 0, sizeof(last_toggle_direction));
+ if ((keystate[SDL_SCANCODE_DOWN] || keystate[SDL_SCANCODE_S]) &&
+ (SDL_GetTicks() - last_toggle_direction[0] >
+ MIN_INPUT_DELAY_MOVEMENT)) {
+ player_ship.rect.y += player_ship_speed;
+ last_toggle_direction[0] = SDL_GetTicks();
+ }
+ if ((keystate[SDL_SCANCODE_UP] || keystate[SDL_SCANCODE_W]) &&
+ (SDL_GetTicks() - last_toggle_direction[1] >
+ MIN_INPUT_DELAY_MOVEMENT)) {
+ player_ship.rect.y -= player_ship_speed;
+ last_toggle_direction[1] = SDL_GetTicks();
+ }
+ if ((keystate[SDL_SCANCODE_RIGHT] || keystate[SDL_SCANCODE_D]) &&
+ (SDL_GetTicks() - last_toggle_direction[2] >
+ MIN_INPUT_DELAY_MOVEMENT)) {
+ player_ship.rect.x += player_ship_speed;
+ last_toggle_direction[2] = SDL_GetTicks();
+ }
+ if ((keystate[SDL_SCANCODE_LEFT] || keystate[SDL_SCANCODE_A]) &&
+ (SDL_GetTicks() - last_toggle_direction[3] >
+ MIN_INPUT_DELAY_MOVEMENT)) {
+ player_ship.rect.x -= player_ship_speed;
+ last_toggle_direction[3] = SDL_GetTicks();
+ }
+
+ const SDL_MouseButtonFlags mousestate =
+ SDL_GetMouseState(nullptr, nullptr);
+ static Uint32 last_fire = 0;
+ if ((mousestate & SDL_BUTTON_LMASK || keystate[SDL_SCANCODE_SPACE]) &&
+ SDL_GetTicks() - last_fire > MIN_INPUT_DELAY_FIRE) {
+ projectiles.push_back(
+ spawn_projectile({player_ship.rect.x + player_ship.gun_offset.x,
+ player_ship.rect.y + player_ship.gun_offset.y},
+ 1, 0, 3, "assets/basic_projectile.svg", nullptr));
+ last_fire = SDL_GetTicks();
+ }
}
SDL_SetRenderDrawColor(main_sdl_session.renderer, 0, 0, 0, 255);
SDL_RenderClear(main_sdl_session.renderer);
- SDL_RenderTexture(main_sdl_session.renderer, player_ship_texture, nullptr,
- &player_ship_rect);
+ for (projectile &p : projectiles) {
+ if (p.rect.x > mode->w || p.rect.y > mode->h) {
+ projectiles.erase(projectiles.begin() + (&p - projectiles.data()));
+ } else { // TODO colision detection
+ step_projectile(p);
+ }
+ }
+
+ SDL_RenderTexture(main_sdl_session.renderer, player_ship.texture, nullptr,
+ &player_ship.rect);
SDL_RenderPresent(main_sdl_session.renderer);
@@ -118,7 +152,7 @@ int main(int argc, char *argv[]) {
lastFrameTime = SDL_GetTicksNS();
}
- SDL_DestroyTexture(player_ship_texture);
+ SDL_DestroyTexture(player_ship.texture);
SDL_DestroyRenderer(main_sdl_session.renderer);
SDL_DestroyWindow(main_sdl_session.window);
SDL_Quit();
diff --git a/src/main.hpp b/src/main.hpp
new file mode 100644
index 0000000..4c65371
--- /dev/null
+++ b/src/main.hpp
@@ -0,0 +1,3 @@
+#pragma once
+#include "types.hpp"
+extern sdl_session main_sdl_session;
\ No newline at end of file
diff --git a/src/meth.cpp b/src/meth.cpp
new file mode 100644
index 0000000..41bd937
--- /dev/null
+++ b/src/meth.cpp
@@ -0,0 +1,29 @@
+#pragma once
+
+#include "types.hpp"
+#include
+
+SDL_FPoint find_dst_point_with_angle_and_distance(SDL_FPoint start, Angle angle,
+ float distance) {
+ float angle_rad = (angle - 90) * M_PI / 180.0f;
+
+ float dx = std::cos(angle_rad) * distance;
+ float dy = std::sin(angle_rad) * distance;
+
+ float calculated_distance = std::sqrt(dx * dx + dy * dy);
+
+ SDL_FPoint result;
+
+ if (calculated_distance > 0) {
+ dx /= calculated_distance;
+ dy /= calculated_distance;
+
+ result.x = start.x + dx * distance;
+ result.y = start.y + dy * distance;
+ } else {
+ result.x = start.x;
+ result.y = start.y;
+ }
+
+ return result;
+}
diff --git a/src/meth.hpp b/src/meth.hpp
new file mode 100644
index 0000000..6e42dcc
--- /dev/null
+++ b/src/meth.hpp
@@ -0,0 +1,5 @@
+#pragma once
+#include "types.hpp"
+#include
+SDL_FPoint find_dst_point_with_angle_and_distance(SDL_FPoint start, Angle angle,
+ float distance);
\ No newline at end of file
diff --git a/src/projectiles.cpp b/src/projectiles.cpp
new file mode 100644
index 0000000..83ac3c5
--- /dev/null
+++ b/src/projectiles.cpp
@@ -0,0 +1,63 @@
+#include "macro.hpp"
+#include "main.hpp"
+#include "meth.hpp"
+#include "types.hpp"
+#include
+#include
+#include
+#include
+#include
+#include
+void step_projectile(projectile p);
+
+projectile spawn_projectile(SDL_FPoint position, float size_multiplier,
+ Angle angle, float speed, char *texture_file_name,
+ SDL_FRect *target) {
+
+ projectile p;
+ SDL_IOStream *texture_file = SDL_IOFromFile(texture_file_name, "r");
+ std::array texture_base_size;
+ {
+ SDL_Surface *tmp_surface = IMG_LoadSVG_IO(texture_file);
+ texture_base_size = {tmp_surface->w, tmp_surface->h};
+ SDL_DestroySurface(tmp_surface);
+ }
+ SDL_SeekIO(texture_file, 0, SDL_IO_SEEK_SET); // reset to top of the file
+ SDL_Surface *projectile_surface =
+ IMG_LoadSizedSVG_IO(texture_file, texture_base_size[0] * size_multiplier,
+ texture_base_size[1] * size_multiplier);
+
+ SDL_CloseIO(texture_file);
+
+ p.texture = SDL_CreateTextureFromSurface(main_sdl_session.renderer,
+ projectile_surface);
+ SDL_DestroySurface(projectile_surface);
+
+ p.angle = angle;
+ p.rect = {position.x, position.y, static_cast(p.texture->w),
+ static_cast(p.texture->h)};
+ p.speed = speed;
+ if (target == nullptr) {
+ p.target = nullptr;
+ p.guided = false;
+ } else {
+ p.target = target;
+ p.guided = true;
+ }
+
+ return p;
+}
+
+void step_projectile(projectile &p) {
+ SDL_FPoint center = FIND_CENTER(p.rect);
+
+ SDL_FPoint dst =
+ find_dst_point_with_angle_and_distance(center, p.angle, p.speed);
+
+ p.rect.x = dst.x - (p.rect.w / 2);
+ p.rect.y = dst.y - (p.rect.h / 2);
+ center = FIND_CENTER(p.rect);
+ SDL_RenderTexture(main_sdl_session.renderer, p.texture, nullptr, &p.rect);
+ // SDL_RenderTextureRotated(main_sdl_session.renderer, p.texture, nullptr,
+ // &p.rect, p.angle, ¢er, SDL_FLIP_NONE);
+}
\ No newline at end of file
diff --git a/src/projectiles.hpp b/src/projectiles.hpp
new file mode 100644
index 0000000..3042899
--- /dev/null
+++ b/src/projectiles.hpp
@@ -0,0 +1,7 @@
+#pragma once
+#include "types.hpp"
+#include
+projectile spawn_projectile(SDL_FPoint position, float size_multiplier,
+ Angle angle, float speed, char *texture_file_name,
+ SDL_FRect *target);
+void step_projectile(projectile &p);
diff --git a/src/types.hpp b/src/types.hpp
index 142cd42..ffbb5ef 100644
--- a/src/types.hpp
+++ b/src/types.hpp
@@ -1,12 +1,9 @@
-#include "const.hpp"
+#pragma once
#include
+#include
#include
#include
#include
-#include
-
-#ifndef TYPES_NS
-#define TYPES_NS
struct Angle {
private:
@@ -41,9 +38,61 @@ public:
normalize();
return *this;
}
+ // Binary operators for int
+ Angle operator+(int rhs) const {
+ return Angle(static_cast(value) + rhs);
+ }
+
+ Angle operator-(int rhs) const {
+ return Angle(static_cast(value) - rhs);
+ }
+
+ Angle operator*(int rhs) const {
+ return Angle(static_cast(value * rhs));
+ }
+
+ Angle operator/(int rhs) const {
+ return Angle(static_cast(value / rhs));
+ }
+
+ // Binary operators for double
+ Angle operator+(double rhs) const {
+ return Angle(static_cast(value + rhs));
+ }
+
+ Angle operator-(double rhs) const {
+ return Angle(static_cast(value - rhs));
+ }
+
+ Angle operator*(double rhs) const {
+ return Angle(static_cast(value * rhs));
+ }
+
+ Angle operator/(double rhs) const {
+ return Angle(static_cast(value / rhs));
+ }
+
+ // Binary operators for float
+ Angle operator+(float rhs) const {
+ return Angle(static_cast(value + rhs));
+ }
+
+ Angle operator-(float rhs) const {
+ return Angle(static_cast(value - rhs));
+ }
+
+ Angle operator*(float rhs) const {
+ return Angle(static_cast(value * rhs));
+ }
+
+ Angle operator/(float rhs) const {
+ return Angle(static_cast(value / rhs));
+ }
// Type conversion
- operator int() const { return value; }
+ operator int() const { return static_cast(value); }
+ operator double() const { return static_cast(value); }
+ operator float() const { return value; }
// Stream output
friend std::ostream &operator<<(std::ostream &os, const Angle &a) {
@@ -51,35 +100,22 @@ public:
}
};
-struct basic_cords {
- float x;
- float y;
-};
-
-struct Entity {
- SDL_FRect position;
- SDL_FRect Tposition;
- bool gotoT = false;
- SDL_Texture *texture;
- SDL_Rect srcRect;
- float speed;
- Angle angle = 0;
-
- basic_cords Central_position(std::optional x = std::nullopt,
- std::optional y = std::nullopt) {
- if (x != std::nullopt) {
- position.x = *x - position.w / 2;
- }
- if (y != std::nullopt) {
- position.y = *y - position.h / 2;
- }
-
- return {position.x + position.w / 2, position.y + position.h / 2};
- }
-};
-
struct sdl_session {
SDL_Window *window;
SDL_Renderer *renderer;
};
-#endif
\ No newline at end of file
+
+struct player_ship_type {
+ SDL_FRect rect;
+ SDL_FPoint gun_offset;
+ SDL_Texture *texture;
+};
+
+struct projectile {
+ SDL_FRect rect;
+ SDL_Texture *texture;
+ float speed;
+ Angle angle = 0;
+ bool guided;
+ SDL_FRect *target;
+};